CN206188564U - Washing wastewater treatment and reuse system - Google Patents

Abstract

The utility model discloses a wash water waste water treatment and recycling system, a equalizing basin A and equalizing basin B for even water yield quality of water, a advection formula sedimentation tank A and the advection formula sedimentation tank B for detaching suspended solid and inorganic impurity in the waste water, be used for degrading aquatic COD, schizolysis long chain polymer organic matter, increase hydrolytic acidification tank A and hydrolytic acidification tank B of waste water biodegradability, be used for handling COD in the waste water, the active sludge pond A and the active sludge pond B of ammonia nitrogen and SS, a radial flow formula sedimentation tank for waste water mud-water separation, be used for further reducing waste water turbidity, get rid of the filtering ponds of organic matter, a disinfection pond and a reuse water basin for disinfecting the decoloration to waste water. Therefore, the regulating tank, the advection type sedimentation tank, the hydrolysis acidification tank, the activated sludge tank, the radial flow type sedimentation tank, the filtering tank, the disinfection tank and the reuse tank are combined to form a washing wastewater treatment and reuse system, so that the washing wastewater can be recycled after treatment, and the ecological environment is protected.

Description

Washing wastewater treatment and reuse system

technical field

The utility model relates to the technology in the field of sewage treatment, in particular to a washing wastewater treatment and reuse system.

Background technique

Washing wastewater contains a large amount of suspended solids, the concentration and color of organic pollutants are not high, and the quality and quantity of wastewater vary greatly. It can be seen from the production process of clothing washing water that the discharged wastewater contains textile pulp such as: modified starch, crosslinking agent, PVA, polyacrylamide, cotton shell, pectin, dust, short fiber fragments, etc., as well as in Other impurities such as enzymes, softening oil, surfactants, desizing powder added during washing, and pigments washed off after washing.

If washing wastewater is discharged directly without treatment, it will cause serious pollution to the environment, mainly in the following aspects: (1) Pollution to natural water bodies. After washing water printing wastewater is discharged into natural water bodies, it contains a large amount of Organic matter rapidly depletes dissolved oxygen in water bodies. Deposited on the bottom of the river, anaerobic decomposition occurs due to lack of oxygen, and the released hydrogen sulfide further consumes the dissolved oxygen in the water, resulting in a sharp drop in dissolved oxygen in the water, which will threaten the survival of fish and shrimp in severe cases . (2) Pollution to farmland. Irrigation of farmland with washing wastewater will cause soil salinization due to high alkalinity. The suspended matter in the wastewater will block the pores of the soil, hinder the respiration of the roots of the crops, and affect the growth of the crops. In view of the hazards of the washing wastewater, the washing wastewater should be treated before being discharged, but the existing washing wastewater treatment system has complicated processes and the treatment effect is not good. Therefore, the existing washing wastewater treatment system should be improved to solve the above problems.

Utility model content

In view of this, the utility model aims at the shortcomings of the existing technology, and its main purpose is to provide a washing wastewater treatment and reuse system, through the adjustment tank, advection sedimentation tank, hydrolysis acidification tank, activated sludge tank, The combination of radial flow sedimentation tank, filter tank, disinfection tank and reuse pool constitutes a washing wastewater treatment and reuse system, so that the washing wastewater can be recycled and reused after treatment to protect the ecological environment.

In order to achieve the above object, the utility model adopts the following technical solutions:

A washing wastewater treatment and reuse system, including regulating pond A and regulating pond B for uniform water quantity and quality, advection sedimentation pond A and advection sedimentation pond B for removing suspended solids and inorganic impurities in waste water, Hydrolysis and acidification pool A and hydrolysis acidification pool B are used to degrade COD in water, crack long-chain macromolecular organic matter, increase the biodegradability of wastewater, and activate sludge pool A and activated sludge pool B for treating COD, ammonia nitrogen and SS in wastewater , a radial flow sedimentation tank for waste cement water separation, a filter tank for further reducing wastewater turbidity and removing organic matter, a disinfection tank for disinfection and decolorization of wastewater, and a reuse pool. The regulating tanks A and B are respectively An aeration device is provided, and lift pumps are respectively connected between the regulating tank A and the horizontal sedimentation tank A and between the regulating tank B and the horizontal sedimentation tank B; the horizontal sedimentation tank A and the horizontal sedimentation tank B are respectively There is a mud scraping device; the water inlet of the hydrolytic acidification tank A is connected with the advection sedimentation tank A, the water inlet of the hydrolysis acidification tank B is connected with the outlet of the advection sedimentation tank B, and the hydrolysis acidification tank A and the hydrolysis Aeration devices are respectively arranged in the acidification tank B; the water inlet of the activated sludge tank A is connected with the water outlet of the hydrolytic acidification tank A, and the water inlet of the activated sludge tank B is connected with the water outlet of the hydrolytic acidification tank B. The activated sludge tank A and the activated sludge tank B are provided with an aeration device, and a reflux device is provided between the activated sludge tank A and B and the hydrolytic acidification tank A and B; the water inlet of the radial flow sedimentation tank They are respectively connected to the outlet of activated sludge tank A and the outlet of activated sludge tank B, and a mud scraping device is installed in the radial flow sedimentation tank; the water inlet of the filter tank is connected to the outlet of the radial flow sedimentation tank, An aeration device and a filter support layer are set in the filter tank; the water inlet of the disinfection tank is connected to the water outlet of the filter tank, and a backwashing device is installed between the disinfection tank and the filter tank, and a carbon dioxide generator is installed in the disinfection tank device; the water inlet of the reuse pool is connected with the water outlet of the disinfection pool.

As a preferred solution: the advection type sedimentation tank A and the advection type sedimentation tank B are provided with hub type filter screen machines for filtering incoming water.

As a preferred solution: the hydrolytic acidification tank is provided with a dissolved oxygen meter for dissolving oxygen in water.

As a preferred solution: the radial flow sedimentation tank is provided with a sludge interface instrument for monitoring the sludge in the tank.

As a preferred solution: a residual chlorine monitor is arranged in the reused water pool.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above-mentioned technical scheme that by combining the regulating tanks A and B, the advection sedimentation tanks A and B, and the hydrolytic acidification tanks A and B , activated sludge tank A and B, radial flow sedimentation tank, filter tank, disinfection tank and reuse water tank are combined to form a washing wastewater treatment and reuse system. This system can eliminate toxic waste water from the production workshop after treatment. Materials, recycling and reuse, and protection of the ecological environment. The system has a simple structure, a small footprint, and a broad market space.

In order to more clearly illustrate the structural features and functions of the utility model, it will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the system principle of the utility model.

Explanation of the accompanying drawings:

10. Regulating pool A 20. Regulating pool B

30. Advection sedimentation tank A 40. Advection sedimentation tank B

50. Hydrolysis and acidification tank A 60. Hydrolysis and acidification tank B

70. Activated sludge pool A 80. Activated sludge pool B

90. Radial flow sedimentation tank 100. Filter tank

101. Filter material supporting layer 110. Disinfection pool

1101. Carbon dioxide generator 120. Water reuse pool

1201. Residual chlorine monitor 130. Aeration device

140. Lift pump 150. Mud scraping device

160. Hub type filter machine 170. Dissolved oxygen meter

180. Sludge interface instrument 190. Backwashing device

200. Reflux device.

detailed description

As shown in Figure 1, the utility model is a washing wastewater treatment and reuse system, including a regulating pond A 10, a regulating pond B 20, an advection sedimentation pond A 30, an advection sedimentation pond B 40, and a hydrolytic acidification pond A 50. Hydrolytic acidification tank B 60, activated sludge tank A 70, activated sludge tank B 80, radial flow sedimentation tank 90, filter tank 100, disinfection tank 110 and reuse water tank 120, wherein:

The adjustment tank A 10 and the adjustment tank B 20 are used to uniform the water quantity and water quality in the pond, and the aeration device 130 is respectively arranged in the adjustment tank A and B; Suspended solids and inorganic impurities in the waste water are respectively connected with a lift pump 140 between the regulating tank A 10 and the flat-flow sedimentation tank A 30, and between the regulating tank B 20 and the flat-flow sedimentation tank B 40. The A 30 and the flat-flow sedimentation tank B 40 are respectively provided with a mud scraping device 150 and a hub-type screen machine 160 for filtering incoming water; the hydrolysis acidification tank A 50 and the hydrolysis acidification tank B 60 are used to degrade COD in water, crack Long-chain macromolecule organic matter increases the biodegradability of wastewater. The water inlet of the hydrolytic acidification tank A 50 is connected to the advection sedimentation tank A 30, and the water inlet of the hydrolysis acidification tank B 60 is connected to the outlet of the advection sedimentation tank B 40. Aeration device 130 and dissolved oxygen meter 170 for dissolving oxygen in water are respectively arranged in hydrolysis acidification tank A 50 and hydrolysis acidification tank B 60. Hydrolysis acidification treatment is a kind of incomplete anaerobic treatment, that is, only Utilizes the first two stages of the anaerobic reaction, the hydrolysis and acidification stages. In this stage, only facultative microorganisms are used to convert macromolecular organic matter into small molecular organic matter, refractory organic matter into easily degradable organic matter, and the hydrolytic acidification biochemical treatment section has a certain ability to adapt to the impact load of water quantity and water quality. The aerobic section creates favorable conditions and increases the biodegradability of subsequent treated sewage.

The activated sludge pool A 70 and the activated sludge pool B 80 are used to treat COD, ammonia nitrogen and SS in the wastewater. The water inlet of the activated sludge pool A 70 is connected with the water outlet of the hydrolytic acidification pool A 50. The activated sludge The water inlet of the pool B 80 is connected with the water outlet of the hydrolytic acidification pool B 60, an aeration device 130 is arranged in the activated sludge pool A 70 and the activated sludge pool B 80, and the activated sludge pool A and B There is a reflux device 200 between the hydrolysis and acidification tanks A and B; the activated sludge treatment is a kind of aerobic treatment, the activated sludge is evenly dispersed and suspended in the reactor, and fully contacted with the wastewater, in the presence of dissolved oxygen , to remove organic waste in wastewater. Activated sludge method is the main method of wastewater biological treatment with activated sludge as the main body. The activated sludge method is to continuously inject air into the wastewater, and after a certain period of time, sludge-like flocs are formed due to the reproduction of aerobic microorganisms. It is inhabited by a microbial group dominated by bacteria micelles, which has a strong ability to adsorb and oxidize organic matter.

The radial flow type settling tank 90 is used to separate waste water from water, and the water inlet of the radial flow type settling tank 90 is connected with the water outlet of the activated sludge tank A 70 and the water outlet of the activated sludge tank B 80 respectively. The flow type sedimentation tank 90 is provided with a sludge scraping device 150 and a sludge interface instrument 180 for monitoring the sludge in the tank.

The filter tank 100 is used to further reduce the turbidity of wastewater and remove organic matter. The water inlet of the filter tank 100 is connected to the water outlet of the radial flow sedimentation tank 160, and an aeration device 130 and a filter material support are arranged in the filter tank 100. Layer 101; Filtration generally refers to the process of intercepting suspended impurities in water with a layer of granular filter materials such as quartz sand, so that the water is clarified. The filter tank 100 is usually set after the sedimentation tank. The function of filtration is not only to further reduce the turbidity of water, but also to partially remove organic matter, bacteria and even viruses in water as the turbidity of water decreases. When filtering, after the sewage passes through the filter material support layer 101, impurities in the water are retained. With the gradual increase of impurity interception in the filter layer, the water head loss in the filter material layer also increases accordingly, so that the water production of the filter tank decreases, or when the water quality of the filter tank does not meet the requirements, the filter tank must stop filtering and perform backwashing. When backwashing, close the water inlet valve, open the drain valve and the flushing branch valve. The flushing water passes through the filter material supporting layer 101 from bottom to top, and is evenly distributed on the entire filter tank plane. The filter material is in a suspended state in the water flow evenly distributed from bottom to top. Under the joint action of collision and friction, it is cleaned, and the eluted suspended impurities are discharged through the drainage tank along with the flushing wastewater. After flushing, the filter material layer recovers its filtering ability, and the filtration starts again.

This disinfection tank 110 is used for disinfecting and decolorizing waste water, and its water inlet is connected to the water outlet of the filter tank 100, and a backwashing device 190 is provided between the disinfection tank 110 and the filter tank 100, and carbon dioxide is provided in the disinfection tank 110. Generator 1101; the reuse pool 120 is used to collect treated sewage for reuse, its water inlet is connected to the outlet of the disinfection pool 110, and a residual chlorine monitor 1201 is installed in the reuse pool 120.

The principle of the washing wastewater treatment and reuse system is as follows: the washing wastewater from the production workshop flows by gravity through the washing water collection pipe network in the park to the regulating pool of the sewage treatment plant in the park. Large particles of impurities in the wastewater, and the sewage after uniform water quality and water quality flow into the advection sedimentation tanks A and B through the lifting pump, and the solid-liquid separation is carried out by the mud scraper in it to remove part of the impurities in the wastewater. The wastewater is in the advection sedimentation tank After removing most of the suspended solids and inorganic impurities in A and B, the effluent enters the hydrolytic acidification pools A and B. In the hydrolytic acidification pools A and B, while degrading part of the COD in the water, the long-chain macromolecular organic matter is cracked, increasing the waste water. Biochemical; after that, the wastewater enters the activated sludge tanks A and B, and the washing wastewater enters the radial flow sedimentation tank after being treated with high-concentration biological sludge to remove most of COD, ammonia nitrogen, and SS in the activated sludge tank. After the mud-water separation is carried out again in the radial flow sedimentation tank, the effluent enters the filter tank, where the turbidity of the water is further reduced and part of the organic matter is removed. The effluent from the filter tank enters the disinfection tank for disinfection and decolorization, and then is discharged into the reuse pool for recycling. The system adopts the treatment method of physicochemical + biochemical, which can not only effectively remove some refractory organic matter, but also has a strong adaptability to the impact load of water quantity and water quality; in addition, an aeration device is added to the regulating tank to strengthen the regulating tank The effect of uniform water quality and quantity;

Microporous aeration is used in the activated sludge tank to increase the utilization rate of oxygen.

The key point of the design of the present utility model is that, by combining regulating ponds A and B, advection sedimentation ponds A and B, hydrolytic acidification ponds A and B, activated sludge ponds A and B, radial flow sedimentation ponds, filter ponds, disinfection The combination of the pool and the reuse pool constitutes a washing wastewater treatment and reuse system. This system can eliminate toxic substances, recycle and reuse the washing wastewater in the production workshop after treatment, and protect the ecological environment. The system has a simple structure and a small footprint. Has a broad market space.

The above are only preferred embodiments of the present utility model, and are not intended to limit the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and equivalent changes made to the above embodiments according to the technical essence of the present utility model Modifications still belong to the scope of the technical solution of the utility model.

Claims (5)

1. a kind of jean-washing wastewater is processed and reclaiming system, it is characterised in that：Include for uniform water quantity and quality regulating reservoir A and Regulating reservoir B, rectangular sedimentation tank A and rectangular sedimentation tank B for removing suspension and inorganic impurity in waste water, for degrading COD in water, cracks long chain macromolecule organic matter, increases the hydrolysis acidification pool A and hydrolysis acidification pool B of wastewater biodegradability, is used for Activated sludge tank A and activated sludge tank B, the radial-flow type sedimentation for waste water mud-water separation of COD, ammonia nitrogen and SS in treatment waste water Pond, for further reduce turbidity of wastewater, the filtering ponds of organics removal, the sterilization pool for the decolouring that carried out disinfection to waste water and Aerator is respectively arranged with reuse pool, regulating reservoir A and regulating reservoir B, between regulating reservoir A and rectangular sedimentation tank A And it is connected to elevator pump between regulating reservoir B and rectangular sedimentation tank B；Rectangular sedimentation tank A and rectangular sedimentation tank B In be respectively arranged with mud-scraping apparatus；The water inlet of hydrolysis acidification pool A is connected with rectangular sedimentation tank A's, hydrolysis acidification pool B Water inlet be connected with the delivery port of rectangular sedimentation tank B, and be respectively arranged with hydrolysis acidification pool A and hydrolysis acidification pool B Aerator；The water inlet of activated sludge tank A is connected with the delivery port of hydrolysis acidification pool A, the water inlet of activated sludge tank B Delivery port with hydrolysis acidification pool B is connected, and aerator is provided with activated sludge tank A and activated sludge tank B, and in work Property is provided with reflux between sludge-tank A and activated sludge tank B and hydrolysis acidification pool A and hydrolysis acidification pool B；The radial-flow sinks The water inlet in shallow lake pond is connected with the delivery port of activated sludge tank A and the delivery port of activated sludge tank B respectively, in the radial-flow type sedimentation Mud-scraping apparatus are provided with pond；The water inlet of the filtering ponds is connected with the delivery port of radical sedimentation basin, is set in filtering ponds There are aerator and filtrate supporting layer；The water inlet of the sterilization pool is connected with the delivery port of filtering ponds, and in sterilization pool and filtering Back purge system is provided between pond, carbon-dioxide generator is provided with sterilization pool；The water inlet of the reuse pool with disappear The delivery port in malicious pond is connected.

2. jean-washing wastewater according to claim 1 is processed and reclaiming system, it is characterised in that：The rectangular sedimentation tank A With the hub-type filter screen machine for filtered water inlet is provided with rectangular sedimentation tank B.

3. jean-washing wastewater according to claim 1 is processed and reclaiming system, it is characterised in that：The hydrolysis acidification pool A and It is respectively arranged with oxygen dissolved oxygen meter soluble in water in hydrolysis acidification pool B.

4. jean-washing wastewater according to claim 1 is processed and reclaiming system, it is characterised in that：In the radical sedimentation basin It is provided with the sludge interface instrument for sludge in monitoring pool.

5. jean-washing wastewater according to claim 1 is processed and reclaiming system, it is characterised in that：Set in the reuse pool There is chlorine residue monitor.