CN210559841U

CN210559841U - Electroplating wastewater recycling integrated treatment device

Info

Publication number: CN210559841U
Application number: CN201920823413.8U
Authority: CN
Inventors: 钱湛; 卓志宇; 余关龙
Original assignee: Hunan Hydro&power Design Institute
Current assignee: Hunan Hydro&power Design Institute
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-05-19
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses an electroplating effluent recycling integration processing apparatus, including connecting gradually the light catalytic reaction pond, the fenton reaction pond of formation an organic whole, flocculation reaction pond, pipe chute sedimentation tank, middle water tank, self-cleaning filter, milipore filter and reuse pond. The integrated treatment device for recycling the electroplating wastewater has the advantages of convenience in operation management, convenience in field construction and installation, flexible field arrangement, realization of cyclic utilization and resource saving of the wastewater, environmental protection and the like.

Description

Electroplating wastewater recycling integrated treatment device

Technical Field

The utility model relates to a waste water treatment technical field especially relates to an electroplating effluent regeneration and reuse integration processing apparatus.

Background

Due to the diversity requirement of electroplating products and the difference of the requirements on the product performance, the wastewater generated in the electroplating industry has large water quality fluctuation, various pollutant types and high pollutant concentration. According to the principle that the conventional electroplating wastewater is classified and treated according to pollution factors, the treatment process is high in complexity, complex to operate and difficult to achieve stable standard reaching. In addition, although the conventional electroplating wastewater treatment process has a good control effect on heavy metal ions in wastewater, the removal effect on organic matter components (grease, surfactants, various additives and the like) in wastewater is limited. Even if the biochemical treatment is adopted, the effect is not ideal due to the lack of nutrient elements required by microorganisms and the influence of heavy metals in the wastewater. The influence of the discharge of the electroplating wastewater on the environment, the ecology and the human health is well known, and the corresponding discharge standard is more and more strict, so that the adopted treatment process is required to effectively remove heavy metals and organic matters in the wastewater at the same time. At present, a plurality of small-sized electroplating plants mostly adopt the primary treatment of electroplating wastewater because the wastewater production per se is small, and the electroplating wastewater reaches the water quality standard of urban sewage and sewer and is discharged into corresponding urban sewage plants for further treatment. The treatment mode not only poses potential threat to the normal operation of the sewage treatment plant, but also has great risk to the harm of the ecological environment.

Although the existing electroplating wastewater recycling treatment device has appeared, the existing electroplating wastewater recycling treatment device is not convenient for operation management, field construction installation and flexible field arrangement, and can not realize the purpose of environmental protection by recycling the wastewater and saving resources.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide one kind can be convenient for operation management, make things convenient for the site operation installation and nimble scene to arrange, can realize the cyclic utilization and the resource saving of waste water again, reach the electroplating effluent recycling integration processing apparatus of environmental protection purpose.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides an electroplating effluent regeneration retrieval and utilization integration processing apparatus, is including connecting gradually the photocatalysis reaction pond that forms an organic whole, fenton reaction pond, flocculation reaction pond, pipe chute sedimentation tank, middle water tank, self-cleaning filter, milipore filter and retrieval and utilization pond.

As a further improvement of the above technical solution:

the photocatalysis reaction pond with the sharing of fenton reaction pond has first shared wall, the fenton reaction pond with the sharing of flocculation reaction pond has the shared wall of second, the flocculation reaction pond with the sharing of pipe chute sedimentation tank has the shared wall of third, the pipe chute sedimentation tank has the shared wall of fourth with middle water tank, the top of first shared wall is equipped with first intercommunication mouth, the top of the shared wall of second is equipped with second intercommunication mouth, the top of the shared wall of third is equipped with third intercommunication mouth, the top of the shared wall of fourth is equipped with the fourth intercommunication mouth.

And a pressurizing pump is connected between the intermediate water tank and the self-cleaning filter.

The quantity of milipore filter is two, is connected with first connecting tube between the bottom of two milipore filter filters, is connected with the second connecting tube between the top of two milipore filter filters, be equipped with first connecting tube on the first connecting tube, first connecting tube with be connected with the third connecting tube between the self-cleaning filter, be equipped with the second connector on the second connecting tube, the second connector with be connected with the fourth connecting tube between the reuse water pond, first connecting tube around first connecting tube all be equipped with first valve around the second connector, reuse water bottom of the pool portion is equipped with the retrieval and utilization water pump, the retrieval and utilization water pump is connected with back flush pipeline with the bottom of two milipore filter filters, be equipped with the second valve on the back flush pipeline.

And a water outlet pipeline is connected between the reuse water pump and the second valve of the backwashing water pipeline, and a third valve is arranged on the water outlet pipeline.

Still include the medicine system, the medicine system respectively with the fenton reaction tank, flocculation reaction tank, middle water tank, ultrafiltration membrane filter connects.

And an oxidation-reduction potentiometer and a first pH detector are arranged on the Fenton reaction tank.

And the flocculation reaction tank and the middle water tank are respectively provided with a second pH detector.

And stirrers are arranged on the Fenton reaction tank and the flocculation reaction tank.

The bottom of pipe chute sedimentation tank is connected with the mud pipe, the bottom of self-cleaning filter is connected with the blow off pipe, the bottom of milipore filter is connected with the empty pipe of mud, all be equipped with the ooff valve on mud pipe, blow off pipe and the empty pipe of mud.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses an electroplating effluent regeneration retrieval and utilization integration processing apparatus is including connecting gradually the light catalytic reaction pond, the fenton reaction pond of formation an organic whole, flocculation reaction pond, pipe chute sedimentation tank, self-cleaning filter, milipore filter and reuse pond. When the device is used, wastewater generated in an electroplating chamber of a production workshop is preliminarily treated and then is collected into an adjusting tank, namely a water source point, the water quality of the wastewater reaches the three-level standard of the comprehensive wastewater discharge standard (GB8978-1996), the wastewater in the adjusting tank enters a photocatalytic reaction tank, and organic matters in the wastewater are fully degraded after the wastewater is treated by the photocatalytic reaction tank; the wastewater after the photocatalytic treatment flows into a Fenton reaction tank automatically, the Fenton reaction tank effectively decomposes COD, SS and oils in the wastewater, and releases heavy metals in a complex state in the wastewater in an ion form; the wastewater treated by the Fenton reaction tank flows into a flocculation reaction tank, and fine precipitates, colloidal substances and metal ions in the wastewater are effectively precipitated by the flocculation reaction tank, so that the concentration of the metal ions in the wastewater is reduced; the wastewater treated by the flocculation reaction tank enters an inclined tube sedimentation tank, and the wastewater is subjected to high-efficiency sludge-water separation in the inclined tube sedimentation tank, so that the inclined tube sedimentation tank has a good separation effect and short sedimentation time, the treatment capacity of the device is improved, and the sludge at the bottom of the sedimentation tank is discharged to a sludge concentration tank in a static pressure mode for further treatment; the supernatant after precipitation is carried out in an intermediate water tank in a self-flowing mode, so that the treatment load and the treatment effect of a treatment system are continuous, stable and efficient with uniform water quality and water quantity; the supernatant treated by the intermediate water tank is sent to a self-cleaning filter, impurities, floating objects, particles and the like in the liquid are directly intercepted by using a filter screen, and meanwhile, the turbidity of the waste water is reduced and the dirt is reduced; the effluent of the self-cleaning filter directly enters an ultrafiltration membrane filter, the ultrafiltration membrane filter separates SS, heavy metal ions and the like in the effluent, so that pollutants in the effluent are removed to a great extent, and meanwhile, the effluent is clearer through membrane filtration; clear water treated by the ultrafiltration membrane filter enters a reuse water tank to realize collection and storage; the reuse water can be conveyed to a production workshop for reuse.

The electroplating wastewater recycling integrated treatment device can be operated and managed conveniently, field construction and installation are facilitated, field arrangement is flexible, wastewater recycling and resource saving can be achieved, and the purpose of protecting the environment is achieved. The electroplating wastewater recycling integrated treatment device has good operation stability and impact resistance, occupies a large area and is particularly suitable for advanced wastewater treatment of small electroplating plants compared with a common biochemical treatment device, effluent can meet the requirement of recycling water quality of a production workshop, and the production cost is effectively reduced.

Drawings

FIG. 1 is a schematic view of the overlooking structure of the integrated treatment device for recycling electroplating wastewater.

FIG. 2 is a schematic view of the structure of the electroplating wastewater recycling integrated treatment device.

FIG. 3 is a perspective schematic view of the integrated treatment device for recycling electroplating wastewater.

FIG. 4 is a schematic diagram of the operation of the integrated treatment device for recycling electroplating wastewater.

The reference numerals in the figures denote:

1. a photocatalytic reaction tank; 12. a first common wall; 121. a first communication port; 2. a Fenton reaction tank; 21. an oxidation-reduction potentiometer; 22. a first pH detector; 23. a second common wall; 231. a second communication port; 3. a flocculation reaction tank; 31. a second pH detector; 32. a stirrer; 34. a third common wall; 341. a third communication port; 4. an inclined tube sedimentation tank; 41. a sludge discharge pipe; 42. an on-off valve; 45. a fourth common wall; 451. a fourth communication port; 5. an intermediate water tank; 56. a pressure pump; 6. a self-cleaning filter; 61. a blow-off pipe; 67. a third connecting pipe; 7. an ultrafiltration membrane filter; 71. a first connecting pipe; 711. a first connection port; 72. a second connecting pipe; 721. a second connection port; 73. a first valve; 74. emptying the pipe; 78. a fourth connecting pipe; 8. a reuse water tank; 81. a recycling water pump; 82. a back flushing water pipeline; 83. a second valve; 84. a water outlet pipeline; 85. a third valve; 9. a dosing system.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

As shown in fig. 1 to 3, the electroplating wastewater recycling integrated treatment apparatus of the embodiment includes a photocatalytic reaction tank 1 for degrading organic matters, a fenton reaction tank 2 for decomposing chemical oxygen demand COD and suspended solid SS and ionizing complex heavy metals, a flocculation reaction tank 3 for precipitating metal ions, an inclined tube sedimentation tank 4 for separating mud and water, an intermediate water tank 5 for homogenizing water quality and water quantity, a self-cleaning filter 6 for intercepting impurities, an ultrafiltration membrane filter 7 for decomposing SS and heavy metal ions and removing pollutants, and a reuse water tank 8 for storing reuse water, which are sequentially connected into a whole. As shown in fig. 1, when in use, the primarily treated wastewater in the regulating reservoir enters a photocatalytic reaction tank 1, and organic matters in the wastewater are fully degraded after the wastewater is treated by the photocatalytic reaction tank 1; the wastewater after the photocatalytic treatment flows into the Fenton reaction tank 2 automatically, the Fenton reaction tank 2 effectively decomposes COD, SS and oils in the wastewater, and heavy metals in a complex state in the wastewater are released in an ionic state; the wastewater treated by the Fenton reaction tank 2 flows into a flocculation reaction tank 3 again, and the flocculation reaction tank 3 effectively precipitates fine precipitates, colloidal substances and metal ions in the wastewater so as to reduce the concentration of the metal ions in the wastewater; the wastewater treated by the flocculation reaction tank 3 enters the inclined tube sedimentation tank 4, the wastewater is subjected to high-efficiency sludge-water separation in the inclined tube sedimentation tank 4, the inclined tube sedimentation tank 4 has a good separation effect and short sedimentation time, the treatment capacity of the device is improved, and the sludge at the bottom of the sedimentation tank is discharged to a sludge concentration tank for further treatment in a static pressure mode; supernatant in the inclined tube sedimentation tank 4 is automatically flowed into the intermediate water tank 5, so that the treatment load and treatment effect of the treatment system are continuous, stable and efficient with uniform water quality and water quantity; clear liquid treated by the intermediate water tank 5 is sent into a self-cleaning filter 6, impurities, floating objects, particles and the like in the liquid are directly intercepted by utilizing a filter screen, simultaneously the turbidity of the waste water is reduced, the dirt is reduced, and simultaneously the normal work of subsequent precision equipment can be effectively ensured, the self-cleaning filter 6 has the characteristics of automatic cleaning and filtering function and automatic pollution discharge, a system continuously supplies water during cleaning and pollution discharge, the automation degree is very high, the filtering precision is from 10 mu m to 3000 mu m, various requirements can be met, and the discharged sewage enters an adjusting tank; clear water treated by the self-cleaning filter 6 directly enters the ultrafiltration membrane filter 7, SS, heavy metal ions and the like in the clear water are separated by the ultrafiltration membrane filter 7, pollutants in the clear water are removed to a great extent, and meanwhile, the clear water is filtered by the membrane, so that the clear water is clearer; clear water treated by the ultrafiltration membrane filter 7 enters a reuse water tank 8 to realize collection and storage; the reuse water can be conveyed to a production workshop for reuse. The electroplating wastewater recycling integrated treatment device can be operated and managed conveniently, field construction and installation are facilitated, field arrangement is flexible, wastewater recycling and resource saving can be achieved, and the purpose of protecting the environment is achieved.

In this embodiment, the photocatalytic reaction tank 1 and the fenton reaction tank 2 share the first common wall 12, the fenton reaction tank 2 and the flocculation reaction tank 3 share the second common wall 23, the flocculation reaction tank 3 and the inclined tube sedimentation tank 4 share the third common wall 34, the inclined tube sedimentation tank 4 and the intermediate water tank 5 share the fourth common wall 45, the first communication port 121 is disposed at the top end of the first common wall 12, the second communication port 231 is disposed at the top end of the second common wall 23, the third communication port 341 is disposed at the top end of the third common wall 34, and the fourth communication port 451 is disposed at the top end of the fourth common wall 45. In this structure, as shown in fig. 1, the photocatalytic reaction tank 1 and the fenton reaction tank 2, the fenton reaction tank 2 and the flocculation reaction tank 3, the flocculation reaction tank 3 and the inclined tube sedimentation tank 4, and the inclined tube sedimentation tank 4 and the intermediate water tank 5 are all co-wall tanks, when in use, the liquid in the photocatalytic reaction tank 1 flows into the fenton reaction tank 2 through the first communication port 121 under the action of the liquid level difference, the liquid in the fenton reaction tank 2 flows into the flocculation reaction tank 3 through the second communication port 231 under the action of the liquid level difference, the liquid in the flocculation reaction tank 3 flows into the inclined tube sedimentation tank 4 through the third communication port 341 under the action of the liquid level difference, and the liquid in the inclined tube sedimentation tank 4 flows into the intermediate water tank 5 through the fourth communication port 451 under the action of the liquid level difference, and the liquid level difference is formed: waste water passes through the water pump and constantly pumps to the photocatalysis reaction pond 1 from the waste water equalizing basin, then the control flow just can keep the water level of photocatalysis reaction pond 1, the liquid stream is again in proper order through fenton reaction pond 2, flocculation reaction pond 3, pipe chute sedimentation tank 4, middle water tank 5, wherein, back pond is relative front pool, because the liquid in the back pond constantly runs off and leads to the liquid level to descend gradually, make to form the liquid level difference between the two, the liquid level of front pool is higher than the liquid level in back pond promptly, just so formed and flowed automatically.

In this embodiment, a pressurizing pump 56 is connected between the intermediate water tank 5 and the self-cleaning filter 6. When liquid enters the self-cleaning filter 6 from the intermediate water tank 5, the liquid level of the intermediate water tank 5 is lower than the liquid level in the self-cleaning filter 6 due to the influence of the sequential bottom lowering of the liquid levels in the front pools, that is, no sufficient liquid level difference exists, and the self-flow cannot be formed, so that the liquid inlet of the self-cleaning filter 6 can be realized only by the pressure pump 56, and due to the action of the pressure pump 56, the upper liquid in the self-cleaning filter 6 can also flow into the ultrafiltration membrane filter 7 and the upper liquid in the ultrafiltration membrane filter 7 can also flow into the reuse water pool 8.

In this embodiment, the number of the ultrafiltration membrane filters 7 is two, a first connecting pipeline 71 is connected between the bottoms of the two ultrafiltration membrane filters 7, a second connecting pipeline 72 is connected between the tops of the two ultrafiltration membrane filters 7, a first connecting port 711 is arranged on the first connecting pipeline 71, a third connecting pipeline 67 is connected between the first connecting port 711 and the self-cleaning filter 6, a second connecting port 721 is arranged on the second connecting pipeline 72, a fourth connecting pipeline 78 is connected between the second connecting port 721 and the reuse water tank 8, the first connecting pipeline 71 is arranged in front of and behind the first connecting port 711, the second connecting pipeline 72 is provided with first valves 73 at the front and the rear of the second connecting port 721, the bottom of the reuse water tank 8 is provided with a reuse water pump 81, the bottoms of the reuse water pump 81 and the two ultrafiltration membrane filters 7 are connected with a backwashing water pipeline 82, and the backwashing water pipeline 82 is provided with a second valve 83. In this structure, two ultrafiltration membrane filters 7 (respectively referred to as a first ultrafiltration membrane filter 7 and a second ultrafiltration membrane filter 7) are used alternately, wherein when the first ultrafiltration membrane filter 7 is used, two first valves 73 close to the first ultrafiltration membrane filter 7 are opened, and two first valves 73 close to the second ultrafiltration membrane filter 7 are closed at the same time, whereas when the second ultrafiltration membrane filter 7 is used, two first valves 73 close to the second ultrafiltration membrane filter 7 are opened, and two first valves 73 close to the first ultrafiltration membrane filter 7 are closed at the same time, so that the alternate use is realized. Meanwhile, water in the reuse water tank 8 can be pumped into the deactivated ultrafiltration membrane filter 7 through the reuse water pump 81 for cleaning, because filter materials in the ultrafiltration membrane filter 7 are blocked and polluted by suspended matters or impurities in liquid after a period of filtration, in order to ensure the quality of filtered water, the ultrafiltration membrane filter 7 is periodically washed to clean the filter materials and recover the filtering capacity, and the backwashing water is cleaned by clean water and is added with cleaning agents (citric acid and sodium hypochlorite) to clean the filter materials.

In this embodiment, the back washing water pipe 82 is connected with the water outlet pipe 84 between the reuse water pump 81 and the second valve 83, the water outlet pipe 84 is provided with the third valve 85, and the water outlet pipe 84 is used for connecting the production workshop, so the reuse water pump 81 in the reuse water tank 8 plays a role of conveying the reuse water to the production workshop and also plays a role of conveying the back washing water to the ultrafiltration membrane filter 7.

In this embodiment, still include medicine system 9, medicine system 9 respectively with the fenton reaction tank 2, flocculation reaction tank 3, middle water tank 5, milipore filter 7 is connected, medicine system 9 is arranged in satisfying the liquid medicine requirement in the fenton reaction tank 2, flocculation reaction tank 3, middle water tank 5, milipore filter 7, need throw strong oxidant (hydrogen peroxide) and ferrous sulfate in the photocatalysis reaction tank 1, need throw NaOH, PAM and heavy metal trapping agent (DCTR) in the flocculation reaction tank 3, wherein, PAM is used for making tiny precipitate and colloidal substance flocculation one-tenth, DCTR is liquid metal precipitator, can effectively deposit metal ion.

In this embodiment, the fenton reaction tank 2 is provided with an oxidation-reduction potentiometer 21 and a first pH detector 22 to monitor the reaction status in real time and adjust the dosage in time.

In this embodiment, the flocculation reaction tank 3 and the intermediate water tank 5 are both provided with a second pH detector 31 for monitoring the reaction status in real time and adjusting the dosage in time.

In this embodiment, the fenton reaction tank 2 and the flocculation reaction tank 3 are both provided with the stirrer 32 for accelerating the action of the drugs in the fenton reaction tank 2 and the flocculation reaction tank 3.

In this embodiment, the bottom end of the inclined tube sedimentation tank 4 is connected with a sludge discharge pipe 41, the bottom end of the self-cleaning filter 6 is connected with a sludge discharge pipe 61, the bottom end of the ultrafiltration membrane filter 7 is connected with a sludge discharge empty pipe 74, and the sludge discharge pipe 41, the sludge discharge pipe 61 and the sludge discharge pipe 74 are all provided with switch valves 42. When the device is used, the drain pipe 61 at the bottom end of the self-cleaning filter 6 and the drain pipe 74 at the bottom end of the ultrafiltration membrane filter 7 are both connected to a wastewater adjusting tank so as to treat and recycle the liquid discharged from the wastewater adjusting tank again, and the sludge discharge pipe 41 at the bottom end of the inclined tube sedimentation tank 4 is connected to a sludge concentration tank to concentrate sludge.

The utility model discloses electroplating effluent regeneration retrieval and utilization integration processing apparatus's theory of operation: as shown in fig. 4, the wastewater generated in the electroplating chamber of the production plant is primarily treated and then collected into a regulating tank, i.e., a water source point of the present application, and the water quality reaches the three-level standard of the integrated wastewater discharge standard (GB8978-1996), so that the wastewater is conveyed to the electroplating wastewater recycling integrated treatment device by a lift pump. The primarily treated wastewater in the regulating reservoir enters a photocatalytic reaction tank 1, and organic matters in the wastewater are fully degraded when the wastewater flows through a fixed bed catalytic reactor of the photocatalytic reaction tank 1; the wastewater after the photocatalytic treatment flows into the Fenton reaction tank 2 in a self-flowing manner, and is fully stirred under the catalysis of ferrous sulfate by adding a strong oxidant (hydrogen peroxide) under an acidic condition, so that COD (chemical oxygen demand), SS (suspended solids) and oils in the wastewater can be further effectively decomposed, and heavy metals in a complex state in the wastewater are released in an ionic form under a strong oxidation condition, wherein an oxidation-reduction potentiometer 21(ORP) and a first pH detector 22 on the Fenton reaction tank 2 monitor the reaction condition in real time, and the dosage is adjusted in time so as to achieve the optimal oxidation state; then the wastewater flows into a flocculation reaction tank 3 through liquid level difference gravity, NaOH, PAM (polyacrylamide) and a heavy metal trapping agent (DCTR) are respectively added through a medicine adding system 9 and fully stirred to achieve the optimal pH value of heavy metal ion precipitation, fine precipitates and colloidal substances in the wastewater are flocculated into clusters through the PAM, metal ions are effectively precipitated through the DCTR, so that the concentration of the metal ions in the wastewater is reduced, and due to the strong chelation property of the DCTR, the reaction can be carried out at normal temperature and in a wide pH value condition range and is not influenced by the concentration of the heavy metal ions, wherein xanthates and dithiocarbamate Derivatives (DTCs) are mostly adopted in the practical application of the DCTR, and the heavy metals in the wastewater can be effectively trapped and the flocculation effect is strengthened through the DCTR; the wastewater treated by the flocculation reaction tank 3 enters the inclined tube sedimentation tank 4, the wastewater is subjected to high-efficiency sludge-water separation in the inclined tube sedimentation tank 4, the inclined tube sedimentation tank 4 has a good separation effect and short sedimentation time, the treatment capacity of the device is improved, and the sludge at the bottom of the sedimentation tank is discharged to a sludge concentration tank for further treatment in a static pressure mode; the supernatant after precipitation is carried out in the intermediate water tank 5 in a self-flowing mode, so that the continuous, stable and efficient treatment load and treatment effect of a treatment system are ensured by uniform water quality and water quantity; the supernatant fluid treated by the middle water tank 5 is sent into a self-cleaning filter 6, the filter screen is utilized to directly intercept impurities, floating objects, particles and the like in the liquid, simultaneously the turbidity of the waste water is reduced, the dirt is reduced, and simultaneously the normal work of subsequent precision equipment can be effectively ensured, the self-cleaning filter 6 has the characteristics of automatic cleaning and filtering function and automatic pollution discharge, the system supplies water uninterruptedly when cleaning and discharging the pollution, the automation degree is very high, the filtering precision is from 10 mu m to 3000 mu m, various requirements can be met, and the discharged sewage enters a waste water adjusting tank; clear water treated by the self-cleaning filter 6 directly enters the ultrafiltration membrane filter 7, SS, heavy metal ions and the like in the clear water are separated by the ultrafiltration membrane filter 7, pollutants in the clear water are removed to a great extent, and meanwhile, the clear water is filtered by the membrane, so that the clear water is clearer; clear water treated by the ultrafiltration membrane filter 7 enters a reuse water tank 8 to realize collection and storage; the reuse water can be conveyed to a production workshop for reuse.

The integrated treatment device for recycling electroplating wastewater adopts the photocatalytic reaction tank 1 and the Fenton reaction tank 2 (the photocatalytic reactor combines the Fenton treatment process), can efficiently remove COD, colloid and oil in wastewater, and can effectively remove even organic matters which are difficult to decompose and in a complex state.

The electroplating wastewater regeneration and reuse integrated treatment device adopts the self-cleaning filter 6 and the ultrafiltration membrane filter 7 to have good interception effect on SS and heavy metal ions of wastewater, the quality of treated water is far lower than the discharge standard, and effluent can be reused to a production workshop.

The integrated treatment device for recycling the electroplating wastewater has good operation stability and impact resistance, occupies a greatly reduced area compared with a common biochemical treatment device, and is particularly suitable for advanced wastewater treatment of small electroplating plants. The system has the characteristics of low investment, low operating cost, convenient operation management and the like, and the whole treatment system can automatically control the operation according to the operation requirement.

The effluent of the electroplating wastewater recycling integrated treatment device can meet the requirement of recycling water quality of a production workshop, the wastewater can be recycled, resources can be saved, and the production cost is effectively reduced.

An application example of the integrated treatment device for recycling electroplating wastewater of the embodiment includes the following relevant parameter requirements and operation effects when the integrated treatment device for recycling electroplating wastewater is used:

water inlet conditions are as follows: q: 5m³/h，

Water quality of inlet water: COD: 480mg/L, Ni²⁺：0.9mg/L，Zn²⁺：4.8mg/L。

Main reaction parameters and treatment effect:

and (3) photocatalytic reaction:

1. ultraviolet light reaction time 15min

Treatment effect COD: 94mg/L of Ni²⁺：0.9mg/L，Zn²⁺：4.8mg/L。

2. Fenton reaction:

1) adding acid until the pH value is 2-4; 2) adding ferrous sulfate for 15 minutes, and then adding hydrogen peroxide; maintaining an oxidation-reduction potential (ORP) of 350 mV; 3) adding the medicine amount: 300mg/L of hydrogen peroxide and 100mg/L of ferrous sulfate.

3. And (3) flocculation tank reaction:

1) adding alkali until the pH value of the flocculation tank is 11; 2) adding PAM; 3) DCTR was added.

Inclined tube precipitation: treatment effect COD: 31mg/L, Ni²⁺：0.4mg/L，Zn²⁺：1.3mg/L。

4. A filtering system:

1) self-cleaning filter-automatic operation; 2) ultrafiltration membrane-automatic operation, regular manual cleaning.

The treatment effect is as follows: COD: 18mg/L, Ni²⁺：0.02mg/L，Zn²⁺：0.1mg/L。

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides an electroplating effluent regeneration retrieval and utilization integration processing apparatus, its characterized in that is including connecting gradually photocatalysis reaction pond (1), fenton reaction pond (2), flocculation reaction pond (3), pipe chute sedimentation tank (4), middle water tank (5), self-cleaning filter (6), milipore filter (7) and reuse water pond (8) that form an organic whole.

2. The integrated treatment device for recycling electroplating wastewater according to claim 1, the photocatalytic reaction tank (1) and the Fenton reaction tank (2) share a first shared wall (12), the Fenton reaction tank (2) and the flocculation reaction tank (3) share a second shared wall (23), the flocculation reaction tank (3) and the inclined tube sedimentation tank (4) share a third shared wall (34), the inclined tube sedimentation tank (4) and the middle water tank (5) share a fourth shared wall (45), the top end of the first common wall (12) is provided with a first communicating opening (121), the top end of the second common wall (23) is provided with a second communicating opening (231), the top end of the third common wall (34) is provided with a third communicating opening (341), and the top end of the fourth common wall (45) is provided with a fourth communicating opening (451).

3. The integrated treatment device for recycling electroplating wastewater according to claim 2, wherein a pressure pump (56) is connected between the intermediate water tank (5) and the self-cleaning filter (6).

4. The integrated treatment device for recycling electroplating wastewater according to any one of claims 1 to 3, characterized in that: the number of the ultrafiltration membrane filters (7) is two, a first connecting pipeline (71) is connected between the bottoms of the two ultrafiltration membrane filters (7), a second connecting pipeline (72) is connected between the tops of the two ultrafiltration membrane filters (7), a first connecting port (711) is arranged on the first connecting pipeline (71), a third connecting pipeline (67) is connected between the first connecting port (711) and the self-cleaning filter (6), a second connecting port (721) is arranged on the second connecting pipeline (72), a fourth connecting pipeline (78) is connected between the second connecting port (721) and the reuse water pool (8), first connecting pipelines (71) are arranged in the front of and behind the first connecting port (711), first valves (73) are arranged in the front of the second connecting port (721) and the second connecting pipeline (72), a reuse water pump (81) is arranged at the bottom of the reuse water pool (8), the bottom of the reuse water pump (81) and the bottom of the two ultrafiltration membrane filters (7) are connected with a back flushing water pipeline (82), and a second valve (83) is arranged on the back flushing water pipeline (82).

5. The integrated treatment device for recycling electroplating wastewater according to claim 4, wherein the back flush water pipe (82) is connected with a water outlet pipe (84) between the recycling water pump (81) and the second valve (83), and the water outlet pipe (84) is provided with a third valve (85).

6. The integrated treatment device for recycling electroplating wastewater according to any one of claims 1 to 3, further comprising a dosing system (9), wherein the dosing system (9) is respectively connected with the Fenton reaction tank (2), the flocculation reaction tank (3), the intermediate water tank (5) and the ultrafiltration membrane filter (7).

7. The integrated treatment device for recycling electroplating wastewater according to claim 6, which is characterized in that: and an oxidation-reduction potentiometer (21) and a first pH detector (22) are arranged on the Fenton reaction tank (2).

8. The integrated treatment device for recycling electroplating wastewater according to claim 7, which is characterized in that: and the flocculation reaction tank (3) and the intermediate water tank (5) are both provided with a second pH detector (31).

9. The integrated treatment device for recycling electroplating wastewater according to claim 8, which is characterized in that: and stirrers (32) are arranged on the Fenton reaction tank (2) and the flocculation reaction tank (3).

10. The integrated treatment device for recycling electroplating wastewater according to any one of claims 1 to 3, characterized in that: the bottom of pipe chute sedimentation tank (4) is connected with sludge discharge pipe (41), the bottom of self-cleaning filter (6) is connected with blow off pipe (61), the bottom of milipore filter (7) is connected with evacuation pipe (74), all be equipped with ooff valve (42) on sludge discharge pipe (41), blow off pipe (61) and evacuation pipe (74).