CN209652000U - A kind of processing system of nickel-containing waste water - Google Patents

Abstract

The utility model discloses a treatment system for nickel-containing waste water, which comprises a storage device, a filter device, a treatment device and a pipeline system. The storage device includes a raw water storage tank, a produced water storage tank and a concentrated water storage tank. The raw water storage tank The tank, filter device and treatment device are connected in sequence, the water product outlet of the treatment device is connected to the product water storage tank, the concentrated water outlet of the treatment device is connected to the concentrated water storage tank, and the filtration accuracy of the filter device is 5-10μ, the treatment device is a reverse osmosis treatment device, and the pipeline system is used to provide pipelines for liquid circulation during the treatment of nickel-containing wastewater. The utility model adopts the principle of reverse osmosis to concentrate and separate the waste water, the water quality of the effluent is stable and not limited by the amount of waste water treatment, and it is easy to maintain; it occupies a small area and is suitable for both new construction and upgrading and reconstruction of the original site There is no need to add chemicals in the waste water treatment process, and the environmental pollution is small, and at the same time, the utility model is easy to realize automation.

Description

A treatment system for nickel-containing wastewater

【Technical field】

The utility model relates to the technical field related to the treatment of nickel-containing wastewater, in particular to a treatment system for nickel-containing wastewater.

【Background technique】

Existing nickel-containing wastewater is usually treated by chemical precipitation, and some nickel-containing wastewater is treated by resin adsorption. Chemical precipitation is to adjust and control the pH value of nickel-containing wastewater, and at the same time add coagulation and flocculation substances, etc., to precipitate nickel in nickel-containing wastewater, and then filter it into nickel-containing sludge, and then transfer it to a qualified unit for treatment . This method occupies a large area of the site and needs to add a large amount of additional chemicals. The quality of the treated wastewater is unstable and it is difficult to control it below 0.1mg/l. Resin adsorption is the use of resin to adsorb metal ions in a certain valence state (generally, metal ions and hydrogen ion exchange adsorption in the resin) to reduce nickel ions in nickel-containing wastewater. After the resin is saturated, the nickel-containing resin Entrust it to a qualified processing unit for processing. The wastewater treated by the resin adsorption method is greatly affected by the nickel content in the original nickel-containing wastewater. When the nickel content in the original nickel-containing wastewater is relatively high, it will not only affect the treatment efficiency of the resin adsorption, but also lead to serious problems. The effect becomes worse, that is, the nickel content of the treated wastewater is greater than 0.1mg/l, and the resin adsorption cost is relatively high. It is generally used in units with a relatively small amount of nickel-containing wastewater. It can be seen that whether chemical precipitation method or resin adsorption method is used, the effluent quality stability of nickel-containing wastewater is relatively poor. The chemical precipitation method occupies a large area of the site, and resin adsorption is often used in units with a relatively small amount of nickel-containing wastewater.

【Content of utility model】

The utility model provides a treatment system and treatment method for nickel-containing wastewater. The principle of reverse osmosis is used to treat nickel-containing wastewater, which can effectively avoid the problem of unstable water quality in the actual operation of the above two treatment methods. And it is not limited by the amount of nickel-containing wastewater treatment, and the site occupies a small area.

In order to solve the above problems in the prior art, the purpose of this utility model is to provide a treatment system for nickel-containing waste water, the main technical solutions are as follows:

A treatment system for nickel-containing wastewater, comprising a storage device, a filter device, a treatment device and a piping system, the storage device includes a raw water storage tank, a produced water storage tank and a concentrated water storage tank, the raw water storage tank, the filtering device and The processing devices are connected sequentially, the water product outlet of the processing device is connected to the water product storage tank, the concentrated water outlet of the processing device is connected to the concentrated water storage tank, the processing device is a reverse osmosis processing device, and the The pipeline system described above is used to provide pipelines for liquid circulation during the treatment of nickel-containing wastewater.

Further, the treatment system for nickel-containing wastewater also includes a booster device, which is arranged between the filter device and the treatment device, and is used to pressurize the reverse osmosis treatment device.

Further, the treatment device includes a primary treatment device, a secondary treatment device and a tertiary treatment device, and the product water outlet and the concentrated water outlet of the primary treatment device are connected to the tertiary treatment device and the secondary treatment device respectively. The inlet of the treatment device is connected, and the product water outlet and concentrated water outlet of the tertiary treatment device are respectively connected with the product water storage tank and the raw water storage tank; the product water outlet and concentrated water outlet of the secondary treatment device They are respectively connected with the raw water storage tank and the concentrated water storage tank.

Further, the treatment system of the nickel-containing wastewater also includes an intermediate storage tank, and the treatment device includes a primary treatment device, a secondary treatment device and a tertiary treatment device, and the intermediate storage tank is used to store the nickel-containing wastewater through the The produced water after the primary treatment device, and the produced water in the intermediate storage tank enters the tertiary treatment device for treatment.

Further, the primary processing device, secondary processing device and tertiary processing device are respectively provided with a primary RO membrane, a secondary RO membrane and a tertiary RO membrane, wherein the primary RO membrane is an anti-pollution membrane, and the secondary RO membrane is an anti-pollution membrane. The first-stage RO membrane is a seawater desalination membrane, and the third-stage RO membrane is a conventional RO membrane.

Further, the filtering device is a filtering pump, and the filtering precision of the filtering device is 5-10 μ.

Further, the nickel-containing wastewater treatment system also includes a PLCS control system.

Further, the treatment system for nickel-containing wastewater also includes a cleaning device, the cleaning device includes a liquid medicine storage tank, and the liquid medicine storage tank is connected to the treatment device.

The utility model also provides a treatment method for nickel-containing wastewater, which uses the above-mentioned nickel-containing wastewater treatment system for treatment.

Further, the treatment method of described nickel-containing wastewater comprises the following steps:

①Wastewater collection: Collect nickel-containing wastewater into raw water storage tanks;

②Wastewater treatment: The nickel-containing wastewater in the raw water storage tank is initially filtered by the filter device and then enters the treatment device. After reverse osmosis treatment by the treatment device, the produced water enters the produced water storage tank, and the concentrated water enters the concentrated water storage tank.

Compared with the prior art, the utility model has the beneficial effects of:

① Using the principle of reverse osmosis to concentrate and separate nickel-containing wastewater, the effluent quality is stable and not limited by the amount of nickel-containing wastewater treated, and it is easy to maintain;

② The treatment device occupies a small area, which is suitable for both new project construction and upgrading and reconstruction of the original site;

③ The nickel-containing wastewater treatment system provided by the utility model does not need to add chemicals during operation, and has little environmental pollution;

④ The treatment system of nickel-containing wastewater provided by the utility model is easy to realize automation.

【Description of drawings】

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the specific structural representation of embodiment 1;

Fig. 3 is the specific structural representation of embodiment 2

Among them, 1. storage device; 11. raw water storage tank; 12. produced water storage tank; 13. concentrated water storage tank; 14. intermediate storage tank; 2. processing device; 21/210, primary processing device; 22/220 , secondary processing device; 23/230, tertiary processing device; 3, filtering device; 31, first filtering device; 32, second filtering device; 33, third filtering device; 4, booster device; 41/410 , the first supercharging device; 42/420, the second supercharging device; 43/430, the third supercharging device.

【Detailed ways】

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Example 1

As shown in Figure 1, a kind of treatment system of nickel-containing wastewater comprises a storage device 1, a filter device 3, a treatment device 2 and a pipeline system (not marked in the figure), and the storage device 1 includes a raw water storage tank 11, a produced water The storage tank 12 and the concentrated water storage tank 13, the raw water storage tank 11, the filtering device 3 and the processing device 2 are connected in sequence, the water production outlet of the processing device 2 is connected with the water production storage tank 12, and the processing device The concentrated water outlet of 2 is connected to the concentrated water storage tank 13, the treatment device 2 is a reverse osmosis treatment device, and the pipeline system is used to provide pipelines for liquid circulation during the treatment of nickel-containing wastewater.

The specific structure can be as follows: the storage tank device 1 also includes an intermediate storage tank 14 and a pressurization device, the processing device 2 includes a primary processing device 21, a secondary processing device 22 and a tertiary processing device 23, the primary processing device 21, the secondary processing device The processing device 22 and the tertiary processing device 23 are respectively equipped with a primary RO membrane, a secondary RO membrane and a tertiary RO membrane. Among them, the primary RO membrane is an anti-pollution membrane, and the desalination rate can reach 99%; the secondary RO membrane is seawater The desalination membrane has a desalination rate of up to 99.5%; the third-stage RO membrane is a conventional reverse osmosis membrane, such as a low-pressure high-desalination reverse osmosis membrane, ESPA series ultra-low pressure and high-flux reverse osmosis membrane, Dow industrial brackish water permeable membrane, etc. The desalination rate can reach 99%; the filter device 3 includes a first filter device 31, a second filter device 32 and a third filter device 33, the filter device 3 is a filter pump, and the filtration accuracy of the filter device 3 is 5-10μ; the booster device It includes a first booster 41 , a second booster 42 and a third booster 43 , and the booster is a vertical long-axis booster pump.

Further, the specific connection structure is as follows: as shown in Figure 2, the raw water storage tank 11, the first filtering device 31, the first pressurizing device 41 and the primary treatment device 21 are connected sequentially through pipelines, and the concentration of the primary treatment system 21 is The water outlet and the produced water outlet are respectively connected to the concentrated water storage tank 13 and the intermediate storage tank 14, that is, the nickel-containing wastewater in the raw water storage tank 11 is initially filtered by the first filter device 31, and then enters the primary treatment device 21 for treatment. The product water treated by the primary treatment device 21 enters the intermediate storage tank 14, and the concentrated water enters the concentrated water storage tank 13; the intermediate storage tank 14, the tertiary filtering device 33, the tertiary booster device 43 and the tertiary processing device 23 pass through the pipeline connected in sequence, the concentrated water outlet and the product water outlet of the third-stage treatment device 23 are respectively connected to the raw water storage tank 11 and the product water storage tank 12, that is, the product water that enters the intermediate storage tank 14 after being treated by the primary treatment device 21 is then passed through the third stage. After the three-stage filter device 33, it enters the three-stage treatment device 23 for processing. After the three-stage treatment device 23 is processed, the produced water enters the product water storage tank 12, and the concentrated water returns to the raw water storage tank 11; The concentrated water in the concentrated water storage tank 13 enters the secondary treatment device 22 for treatment after passing through the secondary filter device 32 , the produced water enters the raw water storage tank 11 , and the concentrated water returns to the concentrated water storage tank 13 . In the process of the whole nickel-containing wastewater treatment, the main function of the filter device 3, that is, the first filter device 31, the second filter device 32 and the third filter device 33, is to treat the primary treatment device 21, the secondary treatment device 22 and the tertiary treatment device. The liquid in the processing device 23 is initially filtered to filter out large particles while not affecting the normal flow rate of the waste liquid, ensuring that the waste liquid enters the processing device at the original speed. The booster 4 is the first booster 41, the second booster The second pressurization device 42 and the third pressurization device 43 are mainly used to pressurize the processing device 2 to make the reverse osmosis treatment of the processing device 2 smoother.

A treatment method for nickel-containing wastewater, which uses the above-mentioned treatment device to treat nickel-containing wastewater. As far as the specific structure of this embodiment is concerned, the treatment steps are as follows: ① The nickel-containing wastewater in the raw water storage tank 11 is initially filtered by the first filter device 31 and then enters the primary treatment device 11, and after being treated by the primary treatment device 11, water is produced Enter the intermediate storage tank 14, concentrated water enters the concentrated water storage tank 13.

②The produced water in the intermediate storage tank 14 enters the tertiary treatment device 23 after passing through the third filtering device 33, and after being treated by the tertiary treatment device 33, the produced water enters the produced water storage tank 12, and concentrated water enters the concentrated water storage tank; step ① The concentrated water entering the concentrated water storage tank 13 is preliminarily filtered by the second filter device 32 and then enters the secondary treatment device 22. After being treated by the secondary treatment device 22, the produced water enters the raw water storage tank 11, and the concentrated water enters the concentrated water storage tank 12. .

After the nickel-containing wastewater is treated by the above-mentioned treatment system and treatment method, the product water entering the product water storage tank 12 is detected (the detection method is in accordance with "GB 11912-1989 Determination of Nickel in Water Quality by Flame Atomic Absorption Spectrophotometry" or "32 Types of Water Quality Determination of elements by Inductively Coupled Plasma Emission Spectrometry HJ776-2015 "Standard detection), the nickel content is less than 0.1㎎/L, according to the provisions of the "Electroplating Pollutant Discharge Standard" (GB21900-2008), in line with the emission standards, can be directly Discharge; the concentrated water entering the concentrated water storage tank 13 is continuously tested. When the conductivity exceeds 22000μs/cm, the nickel content in the concentrated water can reach 450-550㎎/L. At this time, the concentrated water can be transferred to qualified personnel Unit collection processing.

As one of the preferred embodiments, the conductivity probes are respectively installed in the raw water storage tank 11, the produced water storage tank 12, the concentrated water storage tank 13 and the intermediate storage tank 14, and the detection data in each storage tank are transmitted through the communication line. To the conductivity meter, the conductivity in each storage tank can be monitored in real time. The conductivity meter is mainly used to monitor whether the treatment system is running normally. When the conductivity in the product water storage tank 12 exceeds 200us/cm, it can indicate that there is a problem in the treatment system, which needs to be analyzed to find out the cause and solve it.

Further, the above-mentioned processing system may also include a PLCS control system for realizing automation of the processing system.

Further, a cleaning device may also be included. The cleaning device includes a liquid medicine storage tank, which is used to configure cleaning liquid. The liquid medicine storage tank, the filtering device 3 and the processing device 2 are connected in sequence. After the processing device is cleaned, concentrated water and product The water all returns to the liquid medicine storage tank for recycling. With regard to the specific structure of the present embodiment, the first filtering device 31, the first boosting device 41 and the primary processing device 21, the second filtering device 32, the second boosting device 42 and the secondary processing device 22 and the third filtering device 33. After the third pressurization device 43 and the third-stage treatment device 23 are respectively connected in series, they are connected to the liquid medicine storage tank. The medicine storage tank is connected, that is, the medicine in the medicine storage tank passes through the first filter device 31, the second filter device 32 and the third filter device 33 respectively, and then enters the primary treatment device 21, the secondary treatment device 22 and the tertiary treatment device 23 The treatment device is washed or cleaned with medicine, and the cleaned liquid is returned to the liquid medicine storage tank.

Example 2

As shown in Figure 3, the difference between this embodiment and the above-mentioned embodiments is that the raw water storage tank 110, the filter device 3, the first booster device 410 and the primary treatment device 210 are connected in sequence, and the water produced outlet of the primary treatment device 210 and the concentrated water outlet are respectively connected with the tertiary treatment device 230 and the secondary treatment device 220, the produced water outlet and the concentrated water outlet of the tertiary treatment device 230 are respectively connected with the produced water storage tank 120 and the raw water storage tank 110, and the secondary treatment device The product water outlet and the concentrated water outlet of 220 are respectively connected with the raw water storage tank 110 and the concentrated water storage tank 130 . The sewage treatment process in this embodiment is as follows: the nickel-containing wastewater in the raw water storage tank 110 enters the primary treatment device 210 after being initially filtered by the filter device 3, and the produced water treated by the primary treatment device 210 enters the tertiary treatment device 230, Concentrated water enters the secondary treatment device 220; after the product water entering the tertiary treatment device 230 is treated, the product water enters the product water storage tank 120, and the concentrated water returns to the raw water storage tank 110; the concentrated water entering the secondary treatment device 220 passes through After treatment, the produced water returns to the raw water storage tank 110 , and the concentrated water enters the concentrated water storage tank 130 .

After the system circulation treatment of this embodiment, the product water in the product water storage tank 120 is tested, and the nickel content is less than 0.1㎎/L, and can be discharged directly; the concentrated water concentration in the concentrated water storage tank 130 is getting higher and higher, when When a certain standard is reached (for example, the nickel content in the concentrated water reaches 450-550㎎/L, and the conductivity exceeds 22000μs/cm), it will be handed over to a qualified unit for processing.

Similarly, this embodiment can increase the PLCS control system for control to realize automatic management;

Similarly, in this embodiment, a cleaning device can also be installed to clean the processing device.

The above content is a further detailed description of the utility model in combination with specific preferred technical solutions, and it cannot be determined that the specific implementation of the utility model is only limited to these descriptions. For those skilled in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (7)

1. A treatment system for nickel-containing waste water, comprising a storage device, a filtering device, a treatment device and a piping system, characterized in that, the storage device includes a raw water storage tank, a produced water storage tank and a concentrated water storage tank, and the raw water The storage tank, the filtering device and the processing device are connected, the water product outlet of the processing device is connected with the water product storage tank, the concentrated water outlet of the processing device is connected with the concentrated water storage tank, and the processing device is a reverse The osmotic treatment device, the pipeline system is used to provide the pipeline for liquid circulation in the nickel-containing wastewater treatment process; the nickel-containing wastewater treatment system also includes a cleaning device, and the cleaning device includes a medicinal solution storage tank, the medicinal solution storage tank, the The filtering device and the processing device are connected in sequence. 2. the treatment system of nickel-containing waste water according to claim 1, is characterized in that, the treatment system of described nickel-containing waste water also comprises supercharging device, and described supercharging device is located between filtering device and treatment device, uses To pressurize the reverse osmosis treatment device. 3. the treatment system of nickel-containing waste water according to claim 1, is characterized in that, described treatment device comprises primary treatment device, secondary treatment device and tertiary treatment device, and the produced water outlet of described primary treatment device and the concentrated water outlet are respectively connected with the inlets of the tertiary treatment device and the secondary treatment device, and the produced water outlet and the concentrated water outlet of the tertiary treatment device are connected with the produced water storage tank and the raw water storage tank respectively. tank connection; the produced water outlet and the concentrated water outlet of the secondary treatment device are respectively connected with the raw water storage tank and the concentrated water storage tank. 4. the treatment system of nickel-containing waste water according to claim 1, is characterized in that, the treatment system of described nickel-containing waste water also comprises intermediate storage tank, and described treatment device comprises primary treatment device, secondary treatment device and three stage treatment device, the inlet and outlet of the intermediate storage tank are respectively connected to the water production outlet of the first stage treatment device and the inlet of the third stage treatment device, and the product water outlet and concentrated water outlet of the third stage treatment device are respectively connected to The inlet of the produced water storage tank is connected to the concentrated water storage tank; the outlet of the concentrated water storage tank is connected to the inlet of the secondary treatment device, and the produced water outlet and concentrated water outlet of the secondary treatment device are respectively connected to The raw water storage tank is connected to the inlet of the concentrated water storage tank. 5. according to the treatment system of claim 3 or 4 described nickel-containing waste water, it is characterized in that, described primary treatment device, secondary treatment device and tertiary treatment device are respectively provided with primary RO membrane, secondary RO membrane and A three-stage RO membrane, wherein the first-stage RO membrane is an anti-pollution membrane, the second-stage RO membrane is a seawater desalination membrane, and the third-stage RO membrane is a conventional RO membrane. 6 . The treatment system for nickel-containing wastewater according to claim 1 , wherein the filter device is a filter pump, and the filtration accuracy of the filter device is 5-10 μ. 7. The treatment system of nickel-containing wastewater according to claim 1, characterized in that, the treatment system of said nickel-containing wastewater also comprises a PLCS control system.