CN106830227A - The membrane capacitance deionizer and processing method of a kind of circular treatment - Google Patents
The membrane capacitance deionizer and processing method of a kind of circular treatment Download PDFInfo
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Abstract
本申请公开一种循环处理的膜电容去离子装置及处理方法，包括膜电容去离子组件、升压降压转换器、直流电源、原水储液罐、中间储液罐、再生水储液罐、淡水储液罐、电导率监测仪、水泵、动力阀、止回阀和DC/DC直流转换器；基于双电层原理脱盐的技术，膜电容去离子装置在脱盐的同时伴随着能量的储存，而电容去离子单元的再生过程会释放出所贮存的能量，本申请实现了对这部分能量的收集，并将收集的能量作为其它正在进行脱盐工作的电容去离子单元的外接电源，为了达到储存能量最大化的目的，本申请引入升压降压转换器，实现了能量的回收利用，降低了能耗，本申请的实验装置设计可以达到浓盐水多级处理的效果。
The application discloses a membrane capacitive deionization device and treatment method for cycle treatment, including a membrane capacitive deionization component, a step-up and step-down converter, a DC power supply, a raw water storage tank, an intermediate liquid storage tank, a regenerated water storage tank, fresh water Liquid storage tanks, conductivity monitors, water pumps, power valves, check valves and DC/DC converters; based on the desalination technology of the electric double layer principle, the membrane capacitive deionization device is accompanied by energy storage while desalination, while The regeneration process of the capacitive deionization unit will release the stored energy. This application realizes the collection of this part of energy and uses the collected energy as an external power supply for other capacitive deionization units that are performing desalination work. In order to maximize the stored energy For the purpose of modernization, this application introduces a step-up and step-down converter to realize energy recycling and reduce energy consumption. The experimental device design of this application can achieve the effect of multi-stage treatment of concentrated brine.
Description
技术领域technical field
本发明属环保设备技术领域，尤其涉及一种循环处理的膜电容去离子装置及处理方法。The invention belongs to the technical field of environmental protection equipment, and in particular relates to a membrane capacitive deionization device and a treatment method for cycle treatment.
背景技术Background technique
随着工业社会的飞速发展和人口的急剧增长，淡水资源作为工农业生产、经济发展和环境改善中不可替代的宝贵自然资源，其需求量与日俱增。而海水和苦咸水占世界水资源总量的98%，故从中获得廉价的淡水是解决淡水资源短缺问题的有效途径。With the rapid development of industrial society and the rapid growth of population, fresh water resources, as an irreplaceable precious natural resource in industrial and agricultural production, economic development and environmental improvement, are in increasing demand. Seawater and brackish water account for 98% of the world's total water resources, so obtaining cheap freshwater from them is an effective way to solve the shortage of freshwater resources.
目前，实现海水淡化的技术主要包括蒸馏法、反渗透法和电渗析法等方法，然而这些方法具有耗能高、产生二次污染等缺点。作为一种新型脱盐技术，电容去离子技术(Capacitive Deionization, CDI)是利用双电层原理，通过施加静电场强制离子向带有异种电荷的电极处移动，从而去除溶液中的离子。而膜电容去离子技术(MembraneCapacitive Deionization, MCDI)的原理与电容去离子技术类似，只是在正负电极表面各紧贴一层阴、阳离子交换膜，既保证离子的正常迁移、吸附过程，又能有效阻止被吸附离子因水流扰动而被带走，且可避免再生过程中脱附离子被二次吸附于对侧电极，从而大大提高了离子去除效率和电极再生效率。At present, technologies for desalination of seawater mainly include distillation, reverse osmosis, and electrodialysis. However, these methods have disadvantages such as high energy consumption and secondary pollution. As a new type of desalination technology, capacitive deionization technology (Capacitive Deionization, CDI) uses the principle of electric double layer to force ions to move to electrodes with different charges by applying an electrostatic field, thereby removing ions in the solution. The principle of membrane capacitive deionization technology (Membrane Capacitive Deionization, MCDI) is similar to that of capacitive deionization technology, except that a layer of anion and cation exchange membranes are attached to the surface of the positive and negative electrodes, which not only ensures the normal migration and adsorption process of ions, but also can It effectively prevents the adsorbed ions from being taken away due to water flow disturbance, and prevents the desorbed ions from being secondarily adsorbed on the opposite electrode during the regeneration process, thereby greatly improving the ion removal efficiency and electrode regeneration efficiency.
MCDI技术低成本、高效率及环境友好等特点，使其具有更好的发展前景。因此，对该技术的研究也成为了当前的一个热点。经查阅专利文献有以下介绍。The characteristics of MCDI technology such as low cost, high efficiency and environmental friendliness make it have better development prospects. Therefore, research on this technology has also become a current hotspot. After consulting the patent documents, the following introductions are arranged.
中国专利（CN103991937）公开了一种利用膜电容去离子连续废水处理装置，其特征在于：所涉及的膜电极是碳电极与离子膜制成一体的，采用在阴极上喷涂阳离子交换涂层，在阳极上喷涂阴离子交换涂层，制备成膜电极，其离子交换层的厚度小于10微米，比直接加上离子膜的电阻小，电容量大。该装置可有效解决老式电容去离子装置产业化过程中除盐效率低、易结垢以及达到出水要求需要电吸附模块多、投资大、占地面积大等问题，但其具有能耗偏高和再生效果差等缺陷。Chinese patent (CN103991937) discloses a continuous wastewater treatment device using membrane capacitor deionization, which is characterized in that: the membrane electrode involved is made of carbon electrode and ion membrane, and the cathode is sprayed with a cation exchange coating. The anion exchange coating is sprayed on the anode to prepare a film-forming electrode. The thickness of the ion exchange layer is less than 10 microns, and the resistance is smaller than that directly added with the ion film, and the capacitance is large. This device can effectively solve the problems of low desalination efficiency, easy scaling, and the need for many electro-adsorption modules, large investment, and large floor area in the industrialization process of old-fashioned capacitive deionization devices. However, it has high energy consumption and Defects such as poor regeneration effect.
中国专利（CN104926004 A）公开了一种基于直流电场作用下的电容式海水淡化设备和方法原料海水经砂滤和超滤等预处理后，依次进入两级电容去离子模块完成95%以上的脱盐获得淡水，反冲洗浓水可以通过回流管道回到第一级电容去离子模块重新处理。本发明的优点是:电容去离子模块中的离子格栅能够有效阻止反充电脱附过程中阴、阳离子被电极吸附，提高了电极的清洗、再生效果和工作效率;采用两级电容去离子模块淡化海水，降低了操作压力，这使得能够使用PVC塑料材质替代昂贵的双相不锈钢，彻底解决了海水对金属管道的腐蚀问题，且水利用率显著高于反渗透膜法。此外，系统运行压力的降低还可省去昂贵的反渗透膜法浓缩水能量回收装置的投资。Chinese patent (CN104926004 A) discloses a capacitive seawater desalination equipment and method based on the action of a DC electric field. After the raw seawater is pretreated by sand filtration and ultrafiltration, it enters the two-stage capacitive deionization module to complete more than 95% of the desalination. Fresh water is obtained, and the concentrated water for backwashing can be returned to the first-stage capacitive deionization module through the return pipeline for reprocessing. The advantages of the present invention are: the ion grid in the capacitive deionization module can effectively prevent negative and positive ions from being adsorbed by the electrodes during the reverse charging and desorption process, which improves the cleaning, regeneration effect and work efficiency of the electrodes; the two-stage capacitive deionization module is adopted Desalination of seawater reduces the operating pressure, which enables the use of PVC plastic material instead of expensive duplex stainless steel, completely solves the corrosion problem of seawater on metal pipes, and the water utilization rate is significantly higher than that of reverse osmosis membrane method. In addition, the reduction of system operating pressure can also save the investment of expensive reverse osmosis membrane concentrated water energy recovery device.
现有技术公开的专利文献虽然也涉及了MCDI技术，设计一种具有低能耗、可再生，能够最大程度提高去离子技术的工作效率，减少浓水脱盐时的运行成本的循环处理的膜电容去离子装置及处理方法是非常必要的。Although the patent literature disclosed in the prior art also involves MCDI technology, a membrane capacitor deionizer with low energy consumption, renewable, and capable of maximally improving the working efficiency of deionization technology and reducing the operating cost of concentrated water desalination is designed. Ion devices and processing methods are very necessary.
发明内容Contents of the invention
本申请提供一种循环处理的膜电容去离子装置及处理方法，充分利用去离子处理过程中产生的能源。The application provides a cycle-processing membrane capacitive deionization device and treatment method, which fully utilizes the energy generated in the deionization process.
本发明采用以下技术方案：The present invention adopts following technical scheme:
一种循环处理的膜电容去离子装置，所述循环处理的膜电容去离子装置包括膜电容去离子组件、升压降压转换器、直流电源、原水储液罐、中间储液罐、再生水储液罐、淡水储液罐、电导率监测仪、水泵、动力阀、止回阀和DC/DC直流转换器，所述膜电容去离子组件由膜电容去离子组件A和膜电容去离子组件B组成，所述升压降压转换器与膜电容去离子组件的集流体相连，原水储液罐、中间储液罐、再生水储液罐和淡水储液罐通过水管与膜电容去离子组件的进出水口相连，管路上设有电导率监测仪、水泵、动力阀和止回阀，直流电源与DC/DC直流转换器相连。A membrane capacitive deionization device for cyclic processing, the membrane capacitive deionization device for cyclic processing includes a membrane capacitive deionization component, a step-up and step-down converter, a DC power supply, a raw water storage tank, an intermediate liquid storage tank, and a regenerated water storage tank. Liquid tank, fresh water storage tank, conductivity monitor, water pump, power valve, check valve and DC/DC converter, the membrane capacitance deionization module is composed of membrane capacitance deionization module A and membrane capacitance deionization module B Composition, the step-up and step-down converter is connected with the current collector of the membrane capacitance deionization component, and the raw water storage tank, the intermediate liquid storage tank, the regenerated water storage tank and the fresh water storage tank enter and exit the membrane capacitance deionization component through water pipes The water port is connected, and the pipeline is equipped with a conductivity monitor, a water pump, a power valve and a check valve, and the DC power supply is connected with the DC/DC converter.
作为本申请的一种优选技术方案：升压降压转换器是当膜电容去离子组件A吸附饱和时，将膜电容去离子组件A上储存的电能转移到膜电容去离子组件B；当膜电容去离子组件B吸附饱和时，将膜电容去离子组件B上储存的电能转移到膜电容去离子组件A，能源的转移率为30%-50%。As a preferred technical solution of the present application: the step-up and step-down converter is to transfer the electric energy stored on the membrane capacitor deionization component A to the membrane capacitor deionization component B when the membrane capacitor deionization component A is adsorbed and saturated; When capacitive deionization component B is saturated, the electric energy stored on membrane capacitive deionization component B is transferred to membrane capacitive deionization component A, and the energy transfer rate is 30%-50%.
作为本申请的一种优选技术方案：所述的直流电源经过DC/DC直流转换器电压为1.0-1.2V，用于第一次运行时给膜电容去离子组件供给电能，以及在后期运行中补充消耗的能源。As a preferred technical solution of the present application: the voltage of the DC power supply through the DC/DC converter is 1.0-1.2V, which is used to supply electric energy to the membrane capacitive deionization component during the first operation, and in the later operation Replenish the energy consumed.
作为本申请的一种优选技术方案：所述原水储液罐提供脱盐处理所需的原水；中间储液罐作为膜电容去离子组件处理后未达到处理要求的盐水在脱盐过程中的储存区，其内盐水回流至原水管道内混合并继续循环处理，达到浓盐水的多级处理；再生水储液罐用来储存电极再生时所需的水和电极再生完毕产生的浓水；淡水储液罐用于储存达到处理要求的出水。As a preferred technical solution of the present application: the raw water storage tank provides the raw water required for desalination treatment; the intermediate liquid storage tank is used as a storage area for brine in the desalination process that does not meet the treatment requirements after being treated by the membrane capacitance deionization module, The brine in it is returned to the raw water pipeline to mix and continue to be circulated to achieve multi-stage treatment of concentrated brine; the regenerated water storage tank is used to store the water required for electrode regeneration and the concentrated water generated after electrode regeneration; the fresh water storage tank is used It is used to store the effluent that meets the treatment requirements.
作为本申请的一种优选技术方案：所述电导率监测仪是在线监测的电导率仪，测得溶液电导率值作为控制水泵、动力阀和止回阀开关以及电极达到饱和的判断依据；当膜电容器离子组件进出水端测得电导率值一致，说明电极达到饱和，电极需再生；当膜电容器离子组件出水电导率浓度达到处理要求，出水进入淡水储液罐；当膜电容器离子组件出水电导率浓度未能达到处理要求，但低于进水端电导率，出水进入中间储液罐。As a preferred technical solution of the present application: the conductivity monitor is a conductivity meter for on-line monitoring, and the measured solution conductivity value is used as the basis for judging the control of the water pump, the power valve and the check valve switch and the saturation of the electrode; The conductivity value measured at the water inlet and outlet of the membrane capacitor ionic component is consistent, indicating that the electrode is saturated and the electrode needs to be regenerated; when the conductivity concentration of the water outlet of the membrane capacitor ion The specific concentration fails to meet the treatment requirements, but is lower than the conductivity of the water inlet, and the effluent enters the intermediate liquid storage tank.
作为本申请的一种优选技术方案：所述水泵单位时间内通过单位有效面积电容去离子组件的流量为1.0-1.5L/(min·m2)。As a preferred technical solution of the present application: the flow rate of the water pump passing through the unit effective area capacitive deionization component per unit time is 1.0-1.5 L/(min·m 2 ).
一种循环处理的膜电容去离子装置的处理方法，步骤为：A processing method of a membrane capacitive deionization device for cyclic processing, the steps are:
第一步：原水进入管道，经电导率监测仪记录初始电导率后，到达膜电容去离子组件，以经转换的直流电源供电进行除盐；对出水电导率进行监测，达到处理要求的出水进入淡水储液罐，而未达到处理要求但电导率低于进水端的盐水进入中间储液罐储存，待之后其内盐水回流至原水管道内混合并继续循环处理，以实现浓盐水的多级处理；Step 1: The raw water enters the pipeline, and after the initial conductivity is recorded by the conductivity monitor, it reaches the membrane capacitor deionization module, and the converted DC power supply is used for desalination; the conductivity of the effluent is monitored, and the effluent that meets the treatment requirements enters The fresh water storage tank, but the brine that does not meet the treatment requirements but has a conductivity lower than that of the water inlet enters the intermediate liquid storage tank for storage, and then the brine in it returns to the raw water pipeline to mix and continue to circulate to achieve multi-stage treatment of concentrated brine ;
第二步：当膜电容器离子组件进出水端测得电导率值一致，说明电极达到吸附饱和，需再生；利用升压降压转换器将膜电容去离子组件A上储存的电能转移到膜电容去离子组件B，直流电源经转换后供给损失的部分能源；再生过程用水由再生水储液罐提供，出水再回流到罐中；当出水电导率不再变化时，再生过程结束；Step 2: When the conductivity value measured at the inlet and outlet of the membrane capacitor ion module is consistent, it means that the electrode has reached adsorption saturation and needs to be regenerated; use a step-up and step-down converter to transfer the electric energy stored in the membrane capacitor deionization module A to the membrane capacitor Deionization component B, the DC power supply is converted to supply part of the lost energy; the water used in the regeneration process is provided by the regenerated water storage tank, and the effluent water flows back into the tank; when the conductivity of the effluent water no longer changes, the regeneration process ends;
第三步：膜电容去离子组件A和膜电容去离子组件B交替工作，使除盐过程始终连续运行；当膜电容去离子组件A停止工作进行再生时，膜电容去离子组件B即开始工作；其能量由膜电容去离子组件A再生时利用升压降压转换器转换而来的能量提供，不足部分由直流电源转换后补足；此外膜电容去离子组件B的运行过程与首次运行膜电容去离子组件A时相同，直至膜电容去离子组件B达到吸附饱和，重复第二步所述的再生过程。Step 3: Membrane capacitive deionization component A and membrane capacitive deionization component B work alternately to keep the desalination process running continuously; when membrane capacitive deionization component A stops working for regeneration, membrane capacitive deionization component B starts to work ; Its energy is provided by the energy converted by the step-up and step-down converter when the membrane capacitor deionization module A is regenerated, and the insufficient part is made up after conversion of the DC power supply; in addition, the operation process of the membrane capacitor deionization module B is the same as the first operation of the membrane capacitor The deionization module A is the same, until the membrane capacitor deionization module B reaches adsorption saturation, repeat the regeneration process described in the second step.
本申请所述循环处理的膜电容去离子装置及处理方法采用以上技术方案与现有技术相比，具有以下技术效果：Compared with the prior art, the membrane capacitive deionization device and treatment method for the circulation treatment described in the application have the following technical effects by adopting the above technical scheme:
1.基于双电层原理脱盐的技术，所以在脱盐的同时伴随着能量的储存，有效的利用了脱盐时储存在电极上的能量；1. Desalination technology based on the principle of electric double layer, so desalination is accompanied by energy storage, effectively utilizing the energy stored on the electrode during desalination;
2.而电容去离子单元的再生过程会释放能量，本申请实现了对这部分能量的收集，并将收集的能量作为其它正在进行脱盐工作的电容去离子单元的外接电源；2. The regeneration process of the capacitive deionization unit will release energy. This application realizes the collection of this part of energy, and uses the collected energy as an external power supply for other capacitive deionization units that are performing desalination work;
3.为了达到储存能量最大化的目的，本申请引入升压降压转换器，实现了能量的回收利用，降低了能耗；3. In order to achieve the purpose of maximizing stored energy, this application introduces a step-up and step-down converter, which realizes energy recycling and reduces energy consumption;
4.本申请的实验装置设计可以达到浓盐水多级处理的效果。4. The design of the experimental device of this application can achieve the effect of multi-stage treatment of concentrated brine.
附图说明：Description of drawings:
图1是本申请装置运行时的单套膜电容去离子组件运行过程的能量谱图。Fig. 1 is the energy spectrogram of the operation process of the single-membrane capacitive deionization module when the device of the present application is in operation.
图2是本申请应用的升压降压转换器过程中的能量转化率图。Fig. 2 is a diagram of the energy conversion rate in the step-up and step-down converter applied in the present application.
图3是本申请的原理示意图。Fig. 3 is a schematic diagram of the principle of the present application.
图4是本申请的电极再生电路连接示意图。Fig. 4 is a schematic diagram of connection of the electrode regeneration circuit of the present application.
附图标记说明：1-1、膜电容去离子组件A，1-2、膜电容去离子组件B，2、升压降压转换器，3、直流电源，4、原水储液罐，5、中间储液罐，6、再生水储液罐，7、淡水储液罐，8、电导率监测仪，9、水泵，10、动力阀，11、止回阀，12、DC/DC直流转换器。Explanation of reference numerals: 1-1. Membrane capacitor deionization component A, 1-2. Membrane capacitor deionization component B, 2. Step-up and step-down converter, 3. DC power supply, 4. Raw water storage tank, 5. Intermediate storage tank, 6. Regenerated water storage tank, 7. Fresh water storage tank, 8. Conductivity monitor, 9. Water pump, 10. Power valve, 11. Check valve, 12. DC/DC converter.
具体实施方式detailed description
下面结合说明书附图对本申请的具体实施方式作进一步详细的说明。The specific implementation manners of the present application will be described in further detail below in conjunction with the accompanying drawings.
实施例1：Example 1:
如图1、图3和图4所示，一种循环处理的膜电容去离子装置，所述循环处理的膜电容去离子装置包括膜电容去离子组件、升压降压转换器2、直流电源3、原水储液罐4、中间储液罐5、再生水储液罐6、淡水储液罐7、电导率监测仪8、水泵9、动力阀10、止回阀11和DC/DC直流转换器12，所述膜电容去离子组件由膜电容去离子组件A1-1和膜电容去离子组件B1-2组成，所述升压降压转换器2与膜电容去离子组件的集流体相连，升压降压转换器2是当膜电容去离子组件A1-1吸附饱和时，将膜电容去离子组件A1-1上储存的电能转移到膜电容去离子组件B1-2；当膜电容去离子组件B1-2吸附饱和时，将膜电容去离子组件B1-2上储存的电能转移到膜电容去离子组件A1-1，原水储液罐4、中间储液罐5、再生水储液罐6和淡水储液罐7通过水管与膜电容去离子组件的进出水口相连，所述原水储液罐4提供脱盐处理所需的原水；中间储液罐5作为膜电容去离子组件处理后未达到处理要求的盐水在脱盐过程中的储存区，其内盐水回流至原水管道内混合并继续循环处理，达到浓盐水的多级处理；再生水储液罐6用来储存电极再生时所需的水和电极再生完毕产生的浓水；淡水储液罐7用于储存达到处理要求的出水，管路上设有电导率监测仪8、水泵9、动力阀10和止回阀11，所述电导率监测仪8是在线监测的电导率仪，测得溶液电导率值作为控制水泵9、动力阀10和止回阀11开关以及电极达到饱和的判断依据；当膜电容器离子组件1进出水端测得电导率值一致，说明电极达到饱和，电极需再生；当膜电容器离子组件1出水电导率浓度达到处理要求，出水进入淡水储液罐7；当膜电容器离子组件1出水电导率浓度未能达到处理要求，但低于进水端电导率，出水进入中间储液罐5，所述水泵9单位时间内通过单位有效面积电容去离子组件的流量为1.0L/(min·m2)，直流电源3与DC/DC直流转换器12相连，直流电源3经过DC/DC直流转换器12电压为1.2V，用于第一次运行时给膜电容去离子组件1供给电能，以及在后期运行中补充消耗的能源。As shown in Fig. 1, Fig. 3 and Fig. 4, a kind of membrane capacitive deionization device of cyclic processing, the membrane capacitive deionization device of described cyclic processing comprises membrane capacitive deionization assembly, step-up step-down converter 2, DC power supply 3. Raw water storage tank 4, intermediate storage tank 5, recycled water storage tank 6, fresh water storage tank 7, conductivity monitor 8, water pump 9, power valve 10, check valve 11 and DC/DC converter 12. The membrane capacitive deionization component is composed of a membrane capacitive deionization component A1-1 and a membrane capacitive deionization component B1-2. The voltage step-down converter 2 is to transfer the electric energy stored on the membrane capacitance deionization component A1-1 to the membrane capacitance deionization component B1-2 when the membrane capacitance deionization component A1-1 is adsorbed and saturated; When B1-2 is saturated with adsorption, the electric energy stored on the membrane capacitance deionization module B1-2 is transferred to the membrane capacitance deionization module A1-1, raw water storage tank 4, intermediate liquid storage tank 5, regenerated water storage tank 6 and fresh water The liquid storage tank 7 is connected to the water inlet and outlet of the membrane capacitance deionization module through a water pipe, and the raw water storage tank 4 provides the raw water required for desalination treatment; In the storage area of brine in the desalination process, the brine in it flows back into the raw water pipeline to mix and continue to circulate to achieve multi-stage treatment of concentrated brine; the regenerated water storage tank 6 is used to store the water required for electrode regeneration and the electrode regeneration is completed Concentrated water produced; the fresh water storage tank 7 is used to store the effluent that meets the processing requirements, and the pipeline is provided with a conductivity monitor 8, a water pump 9, a power valve 10 and a check valve 11, and the conductivity monitor 8 is an online The monitored conductivity meter measures the conductivity value of the solution as the basis for judging the switch of the water pump 9, the power valve 10 and the check valve 11 and the saturation of the electrodes; It means that the electrode reaches saturation and the electrode needs to be regenerated; when the conductivity concentration of the membrane capacitor ion module 1 reaches the treatment requirement, the outlet water enters the fresh water storage tank 7; when the membrane capacitor ion module 1 outlet water conductivity concentration fails to meet the treatment requirement, but is lower than The conductivity of the water inlet end, the outlet water enters the intermediate liquid storage tank 5, the flow rate of the water pump 9 through the unit effective area capacitive deionization component per unit time is 1.0L/(min·m 2 ), the DC power supply 3 and the DC/DC direct current The converter 12 is connected, and the voltage of the DC power supply 3 through the DC/DC converter 12 is 1.2V, which is used to supply electric energy to the membrane capacitive deionization module 1 during the first operation, and to supplement the consumed energy in the later operation.
原水进入管道，经电导率监测仪8记录初始电导率后，到达膜电容去离子组件，以经转换的直流电源供电进行除盐；对出水电导率进行监测，达到处理要求的出水进入淡水储液罐7，而未达到处理要求但电导率低于进水端的盐水进入中间储液罐5储存，待之后其内盐水回流至原水管道内混合并继续循环处理，以实现浓盐水的多级处理。The raw water enters the pipeline, and after the initial conductivity is recorded by the conductivity monitor 8, it reaches the membrane capacitor deionization module, and the converted DC power supply is used for desalination; the conductivity of the effluent is monitored, and the effluent that meets the treatment requirements enters the fresh water storage solution Tank 7, the brine that does not meet the treatment requirements but whose conductivity is lower than the water inlet enters the intermediate liquid storage tank 5 for storage, and then the brine in it is returned to the raw water pipeline to mix and continue to be circulated to achieve multi-stage treatment of concentrated brine.
当膜电容器离子组件1-1进出水端测得电导率值一致，说明电极达到吸附饱和，需再生；利用升压降压转换器2将膜电容去离子组件A1-1上储存的电能转移到膜电容去离子组件B1-2，直流电源3经转换后供给损失的部分能源；再生过程用水由再生水储液罐6提供，出水再回流到罐中；当出水电导率不再变化时，再生过程结束。When the conductivity value measured at the water inlet and outlet of the membrane capacitor ion module 1-1 is consistent, it means that the electrode has reached adsorption saturation and needs to be regenerated; use the step-up and step-down converter 2 to transfer the electric energy stored on the membrane capacitor deionization module A1-1 to Membrane capacitive deionization module B1-2, the DC power supply 3 is converted to supply part of the lost energy; the water for the regeneration process is provided by the regenerated water storage tank 6, and the effluent flows back into the tank; when the conductivity of the effluent water no longer changes, the regeneration process End.
膜电容去离子组件A1-1和膜电容去离子组件B1-2交替工作，使除盐过程始终连续运行；当膜电容去离子组件A1-1停止工作进行再生时，膜电容去离子组件B1-2即开始工作；其能量由膜电容去离子组件A1-1再生时利用升压降压转换器2转换而来的能量提供，不足部分由直流电源转换后补足；此外膜电容去离子组件B1-2的运行过程与首次运行膜电容去离子组件A1-1时相同，直至膜电容去离子组件B1-2达到吸附饱和，重复第二步所述的再生过程。The membrane capacitive deionization module A1-1 and the membrane capacitor deionization module B1-2 work alternately so that the desalination process runs continuously; when the membrane capacitor deionization module A1-1 stops working for regeneration, the membrane capacitor deionization module B1- 2 starts to work; its energy is provided by the energy converted by the step-up and step-down converter 2 when the membrane capacitive deionization component A1-1 is regenerated, and the insufficient part is made up by DC power conversion; the external membrane capacitive deionization component B1- The operation process of 2 is the same as that of the first operation of membrane capacitive deionization module A1-1, until the membrane capacitive deionization module B1-2 reaches adsorption saturation, repeat the regeneration process described in the second step.
基于双电层原理脱盐的技术，所以在脱盐的同时伴随着能量的储存，有效的利用了脱盐时储存在电极上的能量，而电容去离子单元的再生过程会释放能量，本申请实现了对这部分能量的收集，并将收集的能量作为其它正在进行脱盐工作的电容去离子单元的外接电源，为了达到储存能量最大化的目的，本申请引入升压降压转换器，实现了能量的回收利用，降低了能耗，本申请的实验装置设计可以达到浓盐水多级处理的效果。Desalination technology based on the principle of electric double layer, so desalination is accompanied by energy storage, effectively using the energy stored on the electrode during desalination, and the regeneration process of the capacitive deionization unit will release energy. This application realizes the desalination This part of energy is collected, and the collected energy is used as an external power supply for other capacitive deionization units that are performing desalination work. In order to maximize the stored energy, this application introduces a step-up and step-down converter to realize energy recovery. Utilization reduces energy consumption, and the experimental device design of the present application can achieve the effect of multi-stage treatment of concentrated brine.
装置初始工作电压为1.2V，流量为1 L/min，应用MCDI组件25对，工作时有效面积为1m2。设置原水浓度为10 mM，电导率为1 mS/cm，出水标准为浓度4mM，电导率400 μS/cm，即离子去除率为60%。运行过程中，当出水电导率超过400 μS/cm并低于进水电导率，出水进入中间储液罐；当出水电导率与进水电导率相同时，工作MCDI组件进入再生过程，该对组件的另一MCDI组件开始工作。所应用的Buck-Boost DC-DC转换器由两个MOSFET晶体管、两个电容、一个电阻和一个电感组成，根据实验结果能量回收效率约为31%。The initial operating voltage of the device is 1.2V, the flow rate is 1 L/min, 25 pairs of MCDI components are used, and the effective area is 1m 2 when working. Set the concentration of the raw water to 10 mM, the conductivity to 1 mS/cm, the standard effluent concentration to 4 mM, and the conductivity to 400 μS/cm, that is, the ion removal rate is 60%. During operation, when the conductivity of the outlet water exceeds 400 μS/cm and is lower than the conductivity of the inlet water, the outlet water enters the intermediate liquid storage tank; when the conductivity of the outlet water is the same as that of the inlet water, the working MCDI module enters the regeneration process, and the pair of modules Another MCDI component starts working. The applied Buck-Boost DC-DC converter consists of two MOSFET transistors, two capacitors, one resistor and one inductor. According to the experimental results, the energy recovery efficiency is about 31%.
实施例2Example 2
如图2、图3和图4所示，一种循环处理的膜电容去离子装置，所述循环处理的膜电容去离子装置包括膜电容去离子组件、升压降压转换器2、直流电源3、原水储液罐4、中间储液罐5、再生水储液罐6、淡水储液罐7、电导率监测仪8、水泵9、动力阀10、止回阀11和DC/DC直流转换器12，所述膜电容去离子组件由膜电容去离子组件A1-1和膜电容去离子组件B1-2组成，所述升压降压转换器2与膜电容去离子组件的集流体相连，升压降压转换器2是当膜电容去离子组件A1-1吸附饱和时，将膜电容去离子组件A1-1上储存的电能转移到膜电容去离子组件B1-2；当膜电容去离子组件B1-2吸附饱和时，将膜电容去离子组件B1-2上储存的电能转移到膜电容去离子组件A1-1，原水储液罐4、中间储液罐5、再生水储液罐6和淡水储液罐7通过水管与膜电容去离子组件的进出水口相连，所述原水储液罐4提供脱盐处理所需的原水；中间储液罐5作为膜电容去离子组件处理后未达到处理要求的盐水在脱盐过程中的储存区，其内盐水回流至原水管道内混合并继续循环处理，达到浓盐水的多级处理；再生水储液罐6用来储存电极再生时所需的水和电极再生完毕产生的浓水；淡水储液罐7用于储存达到处理要求的出水，管路上设有电导率监测仪8、水泵9、动力阀10和止回阀11，所述电导率监测仪8是在线监测的电导率仪，测得溶液电导率值作为控制水泵9、动力阀10和止回阀11开关以及电极达到饱和的判断依据；当膜电容器离子组件1进出水端测得电导率值一致，说明电极达到饱和，电极需再生；当膜电容器离子组件1出水电导率浓度达到处理要求，出水进入淡水储液罐7；当膜电容器离子组件1出水电导率浓度未能达到处理要求，但低于进水端电导率，出水进入中间储液罐5，所述水泵9单位时间内通过单位有效面积电容去离子组件的流量为1.5 L/(min·m2)，直流电源3与DC/DC直流转换器12相连，直流电源3经过DC/DC直流转换器12电压为1.0V，用于第一次运行时给膜电容去离子组件1供给电能，以及在后期运行中补充消耗的能源。As shown in Fig. 2, Fig. 3 and Fig. 4, a kind of membrane capacitive deionization device of cyclic processing, the membrane capacitive deionization device of described cyclic processing comprises membrane capacitive deionization assembly, step-up and step-down converter 2, DC power supply 3. Raw water storage tank 4, intermediate storage tank 5, recycled water storage tank 6, fresh water storage tank 7, conductivity monitor 8, water pump 9, power valve 10, check valve 11 and DC/DC converter 12. The membrane capacitive deionization component is composed of a membrane capacitive deionization component A1-1 and a membrane capacitive deionization component B1-2. The voltage step-down converter 2 is to transfer the electric energy stored on the membrane capacitance deionization component A1-1 to the membrane capacitance deionization component B1-2 when the membrane capacitance deionization component A1-1 is adsorbed and saturated; When B1-2 is saturated with adsorption, the electric energy stored on the membrane capacitance deionization module B1-2 is transferred to the membrane capacitance deionization module A1-1, raw water storage tank 4, intermediate liquid storage tank 5, regenerated water storage tank 6 and fresh water The liquid storage tank 7 is connected to the water inlet and outlet of the membrane capacitance deionization module through a water pipe, and the raw water storage tank 4 provides the raw water required for desalination treatment; In the storage area of brine in the desalination process, the brine in it flows back into the raw water pipeline to mix and continue to circulate to achieve multi-stage treatment of concentrated brine; the regenerated water storage tank 6 is used to store the water required for electrode regeneration and the electrode regeneration is completed Concentrated water produced; the fresh water storage tank 7 is used to store the effluent that meets the processing requirements, and the pipeline is provided with a conductivity monitor 8, a water pump 9, a power valve 10 and a check valve 11, and the conductivity monitor 8 is an online The monitored conductivity meter measures the conductivity value of the solution as the basis for judging the switch of the water pump 9, the power valve 10 and the check valve 11 and the saturation of the electrodes; It means that the electrode reaches saturation and the electrode needs to be regenerated; when the conductivity concentration of the membrane capacitor ion module 1 reaches the treatment requirement, the outlet water enters the fresh water storage tank 7; when the membrane capacitor ion module 1 outlet water conductivity concentration fails to meet the treatment requirement, but is lower than The conductivity of the water inlet end, the outlet water enters the intermediate liquid storage tank 5, the flow rate of the water pump 9 passing through the unit effective area capacitive deionization component per unit time is 1.5 L/(min m 2 ), the DC power supply 3 and the DC/DC direct current The converter 12 is connected, and the voltage of the DC power supply 3 through the DC/DC converter 12 is 1.0V, which is used to supply electric energy to the membrane capacitive deionization module 1 during the first operation, and to supplement the consumed energy in the later operation.
原水进入管道，经电导率监测仪8记录初始电导率后，到达膜电容去离子组件，以经转换的直流电源供电进行除盐；对出水电导率进行监测，达到处理要求的出水进入淡水储液罐7，而未达到处理要求但电导率低于进水端的盐水进入中间储液罐5储存，待之后其内盐水回流至原水管道内混合并继续循环处理，以实现浓盐水的多级处理。The raw water enters the pipeline, and after the initial conductivity is recorded by the conductivity monitor 8, it reaches the membrane capacitor deionization module, and the converted DC power supply is used for desalination; the conductivity of the effluent is monitored, and the effluent that meets the treatment requirements enters the fresh water storage solution Tank 7, the brine that does not meet the treatment requirements but whose conductivity is lower than the water inlet enters the intermediate liquid storage tank 5 for storage, and then the brine in it is returned to the raw water pipeline to mix and continue to be circulated to achieve multi-stage treatment of concentrated brine.
当膜电容器离子组件1-1进出水端测得电导率值一致，说明电极达到吸附饱和，需再生；利用升压降压转换器2将膜电容去离子组件A1-1上储存的电能转移到膜电容去离子组件B1-2，直流电源3经转换后供给损失的部分能源；再生过程用水由再生水储液罐6提供，出水再回流到罐中；当出水电导率不再变化时，再生过程结束。When the conductivity value measured at the water inlet and outlet of the membrane capacitor ion module 1-1 is consistent, it means that the electrode has reached adsorption saturation and needs to be regenerated; use the step-up and step-down converter 2 to transfer the electric energy stored on the membrane capacitor deionization module A1-1 to Membrane capacitive deionization module B1-2, the DC power supply 3 is converted to supply part of the lost energy; the water for the regeneration process is provided by the regenerated water storage tank 6, and the effluent flows back into the tank; when the conductivity of the effluent water no longer changes, the regeneration process End.
膜电容去离子组件A1-1和膜电容去离子组件B1-2交替工作，使除盐过程始终连续运行；当膜电容去离子组件A1-1停止工作进行再生时，膜电容去离子组件B1-2即开始工作；其能量由膜电容去离子组件A1-1再生时利用升压降压转换器2转换而来的能量提供，不足部分由直流电源转换后补足；此外膜电容去离子组件B1-2的运行过程与首次运行膜电容去离子组件A1-1时相同，直至膜电容去离子组件B1-2达到吸附饱和，重复第二步所述的再生过程。The membrane capacitive deionization module A1-1 and the membrane capacitor deionization module B1-2 work alternately so that the desalination process runs continuously; when the membrane capacitor deionization module A1-1 stops working for regeneration, the membrane capacitor deionization module B1- 2 starts to work; its energy is provided by the energy converted by the step-up and step-down converter 2 when the membrane capacitive deionization component A1-1 is regenerated, and the insufficient part is made up by DC power conversion; the external membrane capacitive deionization component B1- The operation process of 2 is the same as that of the first operation of membrane capacitive deionization module A1-1, until the membrane capacitive deionization module B1-2 reaches adsorption saturation, repeat the regeneration process described in the second step.
基于双电层原理脱盐的技术，所以在脱盐的同时伴随着能量的储存，有效的利用了脱盐时储存在电极上的能量，而电容去离子单元的再生过程会释放能量，本申请实现了对这部分能量的收集，并将收集的能量作为其它正在进行脱盐工作的电容去离子单元的外接电源，为了达到储存能量最大化的目的，本申请引入升压降压转换器，实现了能量的回收利用，降低了能耗，本申请的实验装置设计可以达到浓盐水多级处理的效果。Desalination technology based on the principle of electric double layer, so desalination is accompanied by energy storage, effectively using the energy stored on the electrode during desalination, and the regeneration process of the capacitive deionization unit will release energy. This application realizes the desalination This part of energy is collected, and the collected energy is used as an external power supply for other capacitive deionization units that are performing desalination work. In order to maximize the stored energy, this application introduces a step-up and step-down converter to realize energy recovery. Utilization reduces energy consumption, and the experimental device design of the present application can achieve the effect of multi-stage treatment of concentrated brine.
实施例3Example 3
如图3和图4所示，一种循环处理的膜电容去离子装置，所述循环处理的膜电容去离子装置包括膜电容去离子组件、升压降压转换器2、直流电源3、原水储液罐4、中间储液罐5、再生水储液罐6、淡水储液罐7、电导率监测仪8、水泵9、动力阀10、止回阀11和DC/DC直流转换器12，所述膜电容去离子组件由膜电容去离子组件A1-1和膜电容去离子组件B1-2组成，所述升压降压转换器2与膜电容去离子组件的集流体相连，升压降压转换器2是当膜电容去离子组件A1-1吸附饱和时，将膜电容去离子组件A1-1上储存的电能转移到膜电容去离子组件B1-2；当膜电容去离子组件B1-2吸附饱和时，将膜电容去离子组件B1-2上储存的电能转移到膜电容去离子组件A1-1，原水储液罐4、中间储液罐5、再生水储液罐6和淡水储液罐7通过水管与膜电容去离子组件的进出水口相连，所述原水储液罐4提供脱盐处理所需的原水；中间储液罐5作为膜电容去离子组件处理后未达到处理要求的盐水在脱盐过程中的储存区，其内盐水回流至原水管道内混合并继续循环处理，达到浓盐水的多级处理；再生水储液罐6用来储存电极再生时所需的水和电极再生完毕产生的浓水；淡水储液罐7用于储存达到处理要求的出水，管路上设有电导率监测仪8、水泵9、动力阀10和止回阀11，所述电导率监测仪8是在线监测的电导率仪，测得溶液电导率值作为控制水泵9、动力阀10和止回阀11开关以及电极达到饱和的判断依据；当膜电容器离子组件1进出水端测得电导率值一致，说明电极达到饱和，电极需再生；当膜电容器离子组件1出水电导率浓度达到处理要求，出水进入淡水储液罐7；当膜电容器离子组件1出水电导率浓度未能达到处理要求，但低于进水端电导率，出水进入中间储液罐5，所述水泵9单位时间内通过单位有效面积电容去离子组件的流量为1 L/(min·m2)，直流电源3与DC/DC直流转换器12相连，直流电源3经过DC/DC直流转换器12电压为1.0V，用于第一次运行时给膜电容去离子组件1供给电能，以及在后期运行中补充消耗的能源。As shown in Figures 3 and 4, a membrane capacitive deionization device for cyclic processing includes a membrane capacitive deionization assembly, a step-up and step-down converter 2, a DC power supply 3, a raw water Liquid storage tank 4, intermediate liquid storage tank 5, regenerated water liquid storage tank 6, fresh water liquid storage tank 7, conductivity monitor 8, water pump 9, power valve 10, check valve 11 and DC/DC converter 12, all The membrane capacitive deionization module is composed of a membrane capacitor deionization module A1-1 and a membrane capacitor deionization module B1-2. Converter 2 is to transfer the electric energy stored on the membrane capacitive deionization component A1-1 to the membrane capacitive deionization component B1-2 when the membrane capacitive deionization component A1-1 is adsorbed and saturated; when the membrane capacitive deionization component B1-2 When the adsorption is saturated, the electric energy stored on the membrane capacitor deionization module B1-2 is transferred to the membrane capacitor deionization module A1-1, the raw water storage tank 4, the intermediate liquid storage tank 5, the regenerated water storage tank 6 and the fresh water storage tank 7. The water pipe is connected to the water inlet and outlet of the membrane capacitor deionization module. The raw water storage tank 4 provides the raw water required for desalination treatment; In the storage area during the process, the brine in it flows back into the raw water pipeline to mix and continue to circulate to achieve multi-stage treatment of concentrated brine; the regenerated water storage tank 6 is used to store the water required for electrode regeneration and the concentrated water generated after electrode regeneration. Water; the fresh water storage tank 7 is used to store the effluent that meets the treatment requirements, and the pipeline is provided with a conductivity monitor 8, a water pump 9, a power valve 10 and a check valve 11, and the conductivity monitor 8 is an on-line monitored conductivity monitor. The measured conductivity value of the solution is used as the judgment basis for controlling the switch of the water pump 9, the power valve 10 and the check valve 11 and the saturation of the electrode; when the conductivity value measured at the water inlet and outlet of the membrane capacitor ion module 1 is consistent, it means that the electrode has reached the saturation level. Saturated, the electrode needs to be regenerated; when the conductivity concentration of the membrane capacitor ion module 1 reaches the treatment requirements, the outlet water enters the fresh water storage tank 7; when the membrane capacitor ion module 1 outlet water conductivity concentration fails to meet the treatment requirements, but is lower than the water inlet Conductivity, the outlet water enters the intermediate liquid storage tank 5, the flow rate of the water pump 9 through the unit effective area capacitive deionization component per unit time is 1 L/(min·m 2 ), the DC power supply 3 and the DC/DC converter 12 Connected, the DC power supply 3 passes through the DC/DC converter 12 and the voltage is 1.0V, which is used to supply electric energy to the membrane capacitive deionization module 1 during the first operation, and to supplement the consumed energy in the later operation.
进水采用自配水，无机物成分为氯化钠，经电导率监测仪8记录初始电导率，电导率为1.5 mS/cm，水温为20℃；装置由两组膜电容去离子组件组成，各膜电容去离子组件含有25组电极，采用活性炭纤维毡为电极，有效电极面积为1 m2，石墨片为集流体，在电极表面安装阴/阳离子交换膜，膜电容去离子组件I工作电压为1.0 V，流量为1 L/min，当出水电导率低于200 μS/cm，出水进入淡水储液罐；当出水电导率超过200 μS/cm并低于进水电导率，出水进入中间储液罐；当出水电导率与进水电导率相同时，膜电容去离子组件I进入再生过程，利用Buck-Boost DC-DC转换器进行能量转换，能量回收效率为33% - 38%。膜电容去离子组件I再生过程中，膜电容去离子组件II开始工作，并通过额外电源补给，当出水电导率低于200 μS/cm，出水进入淡水储液罐；当出水电导率高于200 μS/cm，出水进入中间储液罐；当出水电导率与进水电导率相同时，膜电容去离子组件II吸附饱和，组件进入再生阶段。运行期间，膜电容去离子组件可优先处理中间储液罐中的液体，再处理原水储液罐中的液体，或者中间储液罐中的盐水可与原水储液罐中的盐水混合进入膜电容去离子组件。膜电容去离子组件I再生过程中，膜电容去离子组件II开始工作，并通过额外电源补给，如此循环往复，实现膜电容去离子装置对盐水循环处理的目的。The influent water adopts self-dispensing water, the inorganic component is sodium chloride, the initial conductivity is recorded by the conductivity monitor 8, the conductivity is 1.5 mS/cm, and the water temperature is 20°C; the device is composed of two sets of membrane capacitive deionization components, each The membrane capacitive deionization module contains 25 sets of electrodes, using activated carbon fiber felt as the electrode, the effective electrode area is 1 m 2 , the graphite sheet is the current collector, and anion/cation exchange membranes are installed on the electrode surface. The working voltage of the membrane capacitor deionization module I is 1.0 V, the flow rate is 1 L/min, when the conductivity of the outlet water is lower than 200 μS/cm, the outlet water enters the fresh water storage tank; when the conductivity of the outlet water exceeds 200 μS/cm and is lower than the conductivity of the inlet water, the outlet water enters the intermediate storage tank; when the conductivity of the effluent water is the same as that of the influent water, the membrane capacitive deionization module I enters the regeneration process, and the Buck-Boost DC-DC converter is used for energy conversion, and the energy recovery efficiency is 33% - 38%. During the regeneration process of the membrane capacitor deionization module I, the membrane capacitor deionization module II starts to work and is supplied by an additional power supply. When the conductivity of the effluent water is lower than 200 μS/cm, the effluent water enters the fresh water storage tank; when the conductivity of the effluent water is higher than 200 μS/cm μS/cm, the effluent water enters the intermediate liquid storage tank; when the conductivity of the effluent water is the same as that of the influent water, the membrane capacitance deionization module II is adsorbed and saturated, and the module enters the regeneration stage. During operation, the membrane capacitor deionization module can preferentially treat the liquid in the intermediate liquid storage tank, and then process the liquid in the raw water liquid storage tank, or the brine in the intermediate liquid storage tank can be mixed with the brine in the raw water liquid storage tank to enter the membrane capacitor Deionization components. During the regeneration process of the membrane capacitive deionization module I, the membrane capacitor deionization module II starts to work and is supplied by an additional power supply, and so on, so as to achieve the purpose of the membrane capacitive deionization device to circulate the brine.
基于双电层原理脱盐的技术，所以在脱盐的同时伴随着能量的储存，有效的利用了脱盐时储存在电极上的能量，而电容去离子单元的再生过程会释放能量，本申请实现了对这部分能量的收集，并将收集的能量作为其它正在进行脱盐工作的电容去离子单元的外接电源，为了达到储存能量最大化的目的，本申请引入升压降压转换器，实现了能量的回收利用，降低了能耗，本申请的实验装置设计可以达到浓盐水多级处理的效果。Desalination technology based on the principle of electric double layer, so desalination is accompanied by energy storage, effectively using the energy stored on the electrode during desalination, and the regeneration process of the capacitive deionization unit will release energy. This application realizes the desalination This part of energy is collected, and the collected energy is used as an external power supply for other capacitive deionization units that are performing desalination work. In order to maximize the stored energy, this application introduces a step-up and step-down converter to realize energy recovery. Utilization reduces energy consumption, and the experimental device design of the present application can achieve the effect of multi-stage treatment of concentrated brine.
实施例4Example 4
如图3和图4所示，一种循环处理的膜电容去离子装置，所述循环处理的膜电容去离子装置包括膜电容去离子组件、升压降压转换器2、直流电源3、原水储液罐4、中间储液罐5、再生水储液罐6、淡水储液罐7、电导率监测仪8、水泵9、动力阀10、止回阀11和DC/DC直流转换器12，所述膜电容去离子组件由膜电容去离子组件A1-1和膜电容去离子组件B1-2组成，所述升压降压转换器2与膜电容去离子组件的集流体相连，升压降压转换器2是当膜电容去离子组件A1-1吸附饱和时，将膜电容去离子组件A1-1上储存的电能转移到膜电容去离子组件B1-2；当膜电容去离子组件B1-2吸附饱和时，将膜电容去离子组件B1-2上储存的电能转移到膜电容去离子组件A1-1，原水储液罐4、中间储液罐5、再生水储液罐6和淡水储液罐7通过水管与膜电容去离子组件的进出水口相连，所述原水储液罐4提供脱盐处理所需的原水；中间储液罐5作为膜电容去离子组件处理后未达到处理要求的盐水在脱盐过程中的储存区，其内盐水回流至原水管道内混合并继续循环处理，达到浓盐水的多级处理；再生水储液罐6用来储存电极再生时所需的水和电极再生完毕产生的浓水；淡水储液罐7用于储存达到处理要求的出水，管路上设有电导率监测仪8、水泵9、动力阀10和止回阀11，所述电导率监测仪8是在线监测的电导率仪，测得溶液电导率值作为控制水泵9、动力阀10和止回阀11开关以及电极达到饱和的判断依据；当膜电容器离子组件1进出水端测得电导率值一致，说明电极达到饱和，电极需再生；当膜电容器离子组件1出水电导率浓度达到处理要求，出水进入淡水储液罐7；当膜电容器离子组件1出水电导率浓度未能达到处理要求，但低于进水端电导率，出水进入中间储液罐5，所述水泵9单位时间内通过单位有效面积电容去离子组件的流量为1 L/(min·m2)，直流电源3与DC/DC直流转换器12相连，直流电源3经过DC/DC直流转换器12电压为1.2V，用于第一次运行时给膜电容去离子组件1供给电能，以及在后期运行中补充消耗的能源。As shown in Figures 3 and 4, a membrane capacitive deionization device for cyclic processing includes a membrane capacitive deionization assembly, a step-up and step-down converter 2, a DC power supply 3, a raw water Liquid storage tank 4, intermediate liquid storage tank 5, regenerated water liquid storage tank 6, fresh water liquid storage tank 7, conductivity monitor 8, water pump 9, power valve 10, check valve 11 and DC/DC converter 12, all The membrane capacitive deionization module is composed of a membrane capacitor deionization module A1-1 and a membrane capacitor deionization module B1-2. Converter 2 is to transfer the electric energy stored on the membrane capacitive deionization component A1-1 to the membrane capacitive deionization component B1-2 when the membrane capacitive deionization component A1-1 is adsorbed and saturated; when the membrane capacitive deionization component B1-2 When the adsorption is saturated, the electric energy stored on the membrane capacitor deionization module B1-2 is transferred to the membrane capacitor deionization module A1-1, the raw water storage tank 4, the intermediate liquid storage tank 5, the regenerated water storage tank 6 and the fresh water storage tank 7. The water pipe is connected to the water inlet and outlet of the membrane capacitor deionization module. The raw water storage tank 4 provides the raw water required for desalination treatment; In the storage area during the process, the brine in it flows back into the raw water pipeline to mix and continue to circulate to achieve multi-stage treatment of concentrated brine; the regenerated water storage tank 6 is used to store the water required for electrode regeneration and the concentrated water generated after electrode regeneration. Water; the fresh water storage tank 7 is used to store the effluent that meets the treatment requirements, and the pipeline is provided with a conductivity monitor 8, a water pump 9, a power valve 10 and a check valve 11, and the conductivity monitor 8 is an on-line monitored conductivity monitor. The measured conductivity value of the solution is used as the judgment basis for controlling the switch of the water pump 9, the power valve 10 and the check valve 11 and the saturation of the electrode; when the conductivity value measured at the water inlet and outlet of the membrane capacitor ion module 1 is consistent, it means that the electrode has reached the saturation level. Saturated, the electrode needs to be regenerated; when the conductivity concentration of the membrane capacitor ion module 1 reaches the treatment requirements, the outlet water enters the fresh water storage tank 7; when the membrane capacitor ion module 1 outlet water conductivity concentration fails to meet the treatment requirements, but is lower than the water inlet Conductivity, the outlet water enters the intermediate liquid storage tank 5, the flow rate of the water pump 9 through the unit effective area capacitive deionization component per unit time is 1 L/(min·m 2 ), the DC power supply 3 and the DC/DC converter 12 Connected, the DC power supply 3 passes through the DC/DC converter 12 and the voltage is 1.2V, which is used to supply electric energy to the membrane capacitive deionization module 1 during the first operation, and to supplement the consumed energy in the later operation.
进水采用自配水，无机物成分为氯化钠，经电导率监测仪8记录初始电导率电导率为1.7 mS/cm，水温为20℃；装置由两组膜电容去离子组件组成，各膜电容去离子组件含有25组电极，采用活性炭纤维毡为电极，有效电极面积为1 m2，石墨片为集流体，在电极表面安装阴/阳离子交换膜，膜电容去离子组件I工作电压为1.2 V，流量为1 L/min，当出水电导率低于400 μS/cm，出水进入淡水储液罐；当出水电导率超过400 μS/cm并低于进水电导率，出水进入中间储液罐；当出水电导率与进水电导率相同时，膜电容去离子组件I进入再生过程，利用Buck-Boost DC-DC转换器进行能量转换，能量回收效率约为36% - 45%。膜电容去离子组件I再生过程中，膜电容去离子组件II开始工作，并通过额外电源补给，当出水电导率低于400 μS/cm，出水进入淡水储液罐；当出水电导率高于400 μS/cm，出水进入中间储液罐；当出水电导率与进水电导率相同时，膜电容去离子组件II吸附饱和，组件进入再生阶段。运行期间，膜电容去离子组件可优先处理中间储液罐中的液体，再处理原水储液罐中的液体，或者中间储液罐中的盐水可与原水储液罐中的盐水混合进入膜电容去离子组件。膜电容去离子组件I再生过程中，膜电容去离子组件II开始工作，并通过额外电源补给，如此循环往复，实现膜电容去离子装置对盐水循环处理的目的。The influent water adopts self-dispensing water, the inorganic component is sodium chloride, the initial conductivity recorded by the conductivity monitor 8 is 1.7 mS/cm, and the water temperature is 20°C; the device is composed of two sets of membrane capacitive deionization components, each membrane The capacitive deionization component contains 25 sets of electrodes, using activated carbon fiber felt as the electrode, the effective electrode area is 1 m 2 , the graphite sheet is the current collector, and anion/cation exchange membranes are installed on the electrode surface. The working voltage of the membrane capacitive deionization component I is 1.2 V, the flow rate is 1 L/min, when the conductivity of the effluent water is lower than 400 μS/cm, the effluent water enters the fresh water storage tank; when the conductivity of the effluent water exceeds 400 μS/cm and is lower than the conductivity of the influent water, the effluent water enters the intermediate liquid storage tank ; When the conductivity of the effluent water is the same as that of the influent water, the membrane capacitive deionization module I enters the regeneration process, and the Buck-Boost DC-DC converter is used for energy conversion, and the energy recovery efficiency is about 36% - 45%. During the regeneration process of the membrane capacitor deionization module I, the membrane capacitor deionization module II starts to work and is supplied by an additional power supply. When the conductivity of the effluent water is lower than 400 μS/cm, the effluent water enters the fresh water storage tank; when the conductivity of the effluent water is higher than 400 μS/cm μS/cm, the effluent water enters the intermediate liquid storage tank; when the conductivity of the effluent water is the same as that of the influent water, the membrane capacitance deionization module II is adsorbed and saturated, and the module enters the regeneration stage. During operation, the membrane capacitor deionization module can preferentially treat the liquid in the intermediate liquid storage tank, and then process the liquid in the raw water liquid storage tank, or the brine in the intermediate liquid storage tank can be mixed with the brine in the raw water liquid storage tank to enter the membrane capacitor Deionization components. During the regeneration process of the membrane capacitive deionization module I, the membrane capacitor deionization module II starts to work and is supplied by an additional power supply, and so on, so as to achieve the purpose of the membrane capacitive deionization device to circulate the brine.
基于双电层原理脱盐的技术，所以在脱盐的同时伴随着能量的储存，有效的利用了脱盐时储存在电极上的能量，而电容去离子单元的再生过程会释放能量，本申请实现了对这部分能量的收集，并将收集的能量作为其它正在进行脱盐工作的电容去离子单元的外接电源，为了达到储存能量最大化的目的，本申请引入升压降压转换器，实现了能量的回收利用，降低了能耗，本申请的实验装置设计可以达到浓盐水多级处理的效果。Desalination technology based on the principle of electric double layer, so desalination is accompanied by energy storage, effectively using the energy stored on the electrode during desalination, and the regeneration process of the capacitive deionization unit will release energy. This application realizes the desalination This part of energy is collected, and the collected energy is used as an external power supply for other capacitive deionization units that are performing desalination work. In order to maximize the stored energy, this application introduces a step-up and step-down converter to realize energy recovery. Utilization reduces energy consumption, and the experimental device design of the present application can achieve the effect of multi-stage treatment of concentrated brine.
上面结合附图对本申请的实施方式作了详细说明，但是本申请并不限于上述实施方式，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本申请宗旨的前提下做出各种变化。The implementation of the application has been described in detail above in conjunction with the accompanying drawings, but the application is not limited to the above-mentioned implementation, and can also be made without departing from the purpose of the application within the scope of knowledge of those of ordinary skill in the art. Variations.
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| EP3552691A1 (en) * | 2018-04-09 | 2019-10-16 | Grünbeck Wasseraufbereitung GmbH | Apparatus and method for deionising a fluid with dissolved ions, in particular water |
| DE102018108339B4 (en) | 2018-04-09 | 2022-01-20 | Grünbeck Wasseraufbereitung GmbH | Device and method for deionizing a fluid with ions dissolved therein, in particular water |
| CN109354268A (en) * | 2018-09-29 | 2019-02-19 | 核工业北京化工冶金研究院 | A kind of neutrality ground-dipping uranium extraction well site underground water deionization processing method |
| CN109264831A (en) * | 2018-11-21 | 2019-01-25 | 江苏科技大学 | Asymmetric capacitor desalination device and method for desalting using the same |
| CN109824127A (en) * | 2019-02-22 | 2019-05-31 | 中国石油大学(华东) | The system and its application method of Electro Sorb desalination are carried out using photovoltaic energy |
| CN109824127B (en) * | 2019-02-22 | 2022-05-03 | 中国石油大学(华东) | System for performing electro-adsorption desalination by utilizing photovoltaic energy and using method thereof |
| CN112110578A (en) * | 2019-06-21 | 2020-12-22 | 江苏科技大学 | Energy-recyclable hybrid capacitor deionization intelligent device |
| CN112661244A (en) * | 2019-11-08 | 2021-04-16 | 新南创新有限公司 | Membrane capacitor deionization electric energy recovery device and method |
| CN113493263A (en) * | 2020-04-01 | 2021-10-12 | 佛山市云米电器科技有限公司 | Household water purifying device and control method thereof |
| CN115259306A (en) * | 2022-08-23 | 2022-11-01 | 河北大学 | Magnetic control induction capacitance wastewater desalination device and regeneration method thereof |
| CN116253408A (en) * | 2023-02-24 | 2023-06-13 | 清华大学 | Single-stage high-power salt concentration method based on membrane capacitive deionization technology |
| CN120271061A (en) * | 2025-03-07 | 2025-07-08 | 江西铜业技术研究院有限公司 | Self-driven seawater desalination system and method |
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