CN217323743U - High-power enrichment facility of electronickelling - Google Patents
High-power enrichment facility of electronickelling Download PDFInfo
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- CN217323743U CN217323743U CN202221259671.6U CN202221259671U CN217323743U CN 217323743 U CN217323743 U CN 217323743U CN 202221259671 U CN202221259671 U CN 202221259671U CN 217323743 U CN217323743 U CN 217323743U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to an electronickelling high power enrichment facility, include: the nickel-containing wastewater treatment device comprises a nickel-containing wastewater collection box, a rough filtration unit, a fine filtration unit, a primary reverse osmosis device, a secondary reverse osmosis device and an electrodialysis unit which are sequentially communicated, wherein a water production outlet of the secondary reverse osmosis device is communicated with a water washing working section of an electroplating production line, and an outlet of the electrodialysis unit and a waste liquid outlet of the electrodialysis unit are respectively communicated with a stock solution tank and a wastewater treatment unit. The high-power nickel electroplating concentration device is additionally provided with the two-stage reverse osmosis device after the coarse filtration unit and the fine filtration unit, so that the concentration of nickel-containing wastewater can be improved, the produced water can also be used in a washing working section of an electroplating production line, the consumption of tap water is saved, meanwhile, the electrodialysis equipment is additionally arranged, the concentration of the nickel-containing solution is further improved, the nickel-containing solution can be directly merged into a stock solution tank of the electroplating production line for recycling, and the long-term stable operation can be realized, in addition, the residual waste liquid is directly discharged into the wastewater treatment unit, the pollution of organic matters to the two-stage reverse osmosis device can be avoided, and the cleaning times of the reverse osmosis device are reduced.
Description
Technical Field
The utility model relates to an electroplating wastewater treatment technical field especially indicates an electronickelling high power enrichment facility.
Background
The electroplating industry is an important industry of industrial production in China, and is also one of important sources of sewage discharge, the quality of electroplating wastewater is complex, the components are not easy to control, and the electroplating wastewater contains heavy metal ions such as chromium, nickel, cadmium, zinc and the like, once the metals are discharged, the metals cannot be biodegraded in the environment, often participate in food chain circulation, and finally accumulate in organisms to destroy normal physiological metabolic activities of the organisms, so that the health of human beings is harmed, and in addition, the recovery of precious heavy metals in the electroplating wastewater also has certain economic value, so the requirement of wastewater treatment is brought forward to the electroplating industry based on the reasons.
The conventional method for treating the electroplating wastewater mainly comprises the following steps: chemical method, ferrite method, biological method and ion exchange method, wherein the chemical method is a more traditional treatment technology, the essence of the methods is to transfer pollutants, basically, heavy metals in wastewater are mixed and precipitated and then buried, in order to recycle precious metals, especially nickel, in the water washing process of an electroplating production line, RO membrane filtration concentration or resin adsorption concentration is usually adopted, but the RO membrane concentration is limited by the recovery rate and filtration pressure of RO membrane and the membrane system, so that the nickel electroplating water washing water cannot be simply concentrated by high times, a multi-stage high-pressure RO membrane device is required to be connected in series for concentration, and the concentration can only be up to 10%; meanwhile, the resin adsorption concentration is only suitable for the condition of small treated water amount, the problems of large resin usage amount, large occupied area and the like exist when the water amount is large, and in addition, the resin needs to be regenerated frequently, the regeneration flow is complex, the adsorption capacity is reduced after regeneration, and the resin is most likely to lose efficacy.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to solve the technical problem that the nickel-containing washing wastewater treatment device for the electroplating production line in the prior art has the problems of low recovery rate and unable long-term stable operation.
In order to solve the technical problem, the utility model provides an electronickelling high power enrichment facility, include:
the nickel-containing wastewater collection box comprises a collection box inlet and a collection box outlet, wherein the collection box inlet is communicated with a water washing working section of the electroplating production line;
the coarse filtration unit comprises a coarse filtration unit inlet and a coarse filtration unit outlet, and the coarse filtration unit inlet is communicated with the collection box outlet;
the fine filtering unit comprises a fine filtering unit inlet and a fine filtering unit outlet, and the fine filtering unit inlet is communicated with the coarse filtering unit outlet;
the first-stage reverse osmosis device comprises a first-stage reverse osmosis device inlet and a first-stage reverse osmosis device outlet, and the first-stage reverse osmosis device inlet is communicated with the fine filtration unit outlet;
the second-stage reverse osmosis device comprises a second-stage reverse osmosis device inlet, a second-stage reverse osmosis device outlet and a produced water outlet, wherein the second-stage reverse osmosis device inlet is communicated with the first-stage reverse osmosis device outlet, and the produced water outlet is communicated with a water washing section of the electroplating production line;
the electrodialysis unit comprises an electrodialysis unit inlet, an electrodialysis unit outlet and a waste liquid outlet, wherein the electrodialysis unit inlet is communicated with the outlet of the first-stage reverse osmosis device and the outlet of the second-stage reverse osmosis device, and the electrodialysis unit outlet is communicated with a stock solution tank of an electroplating production line;
and the wastewater treatment unit is communicated with the waste liquid outlet.
In an embodiment of the present invention, the rough filtering unit includes a quartz sand filter and an activated carbon filter, the activated carbon filter communicates with the quartz sand filter, the quartz sand filter communicates with the nickel-containing wastewater collection tank, and the activated carbon filter communicates with the fine filtering unit.
In an embodiment of the present invention, the fine filtration unit includes a security filter and a fine filtration water tank, the fine filtration water tank is communicated with the security filter, the security filter is communicated with the activated carbon filter, and the fine filtration water tank is communicated with the one-level reverse osmosis device.
In one embodiment of the present invention, a concentrate collecting tank is provided between the second-stage reverse osmosis device and the electrodialysis unit.
In one embodiment of the present invention, a transfer pump is provided between the nickel-containing wastewater collection tank and the coarse filtration unit.
In one embodiment of the present invention, a high pressure pump is disposed between the fine filtration unit and the primary reverse osmosis device.
In an embodiment of the present invention, the electrodialysis unit inlet is provided with a first branch pipe, the first branch pipe comprises two inlets, the two inlets of the branch pipe are respectively connected with the first-stage reverse osmosis device outlet and the second-stage reverse osmosis device outlet.
In an embodiment of the utility model, still include the evaporation crystallization unit, the evaporation crystallization unit communicates the electrodialysis equipment export.
In an embodiment of the present invention, the electrodialysis unit outlet is provided with a second branch pipe, the second branch pipe comprises two outlets, and the two outlets of the second branch pipe are respectively communicated with the evaporative crystallization unit and the raw liquid tank.
In an embodiment of the present invention, a first stop valve is disposed between the second branch pipe and the raw liquid tank, and a second stop valve is disposed between the second branch pipe and the evaporative crystallization unit.
Compared with the prior art, the technical scheme of the utility model have following advantage:
a electronickelling high power enrichment facility, install one-level reverse osmosis unit and second grade reverse osmosis unit additional behind coarse filter unit and essence filter unit, not only can improve the concentration of nickeliferous waste water, its product water also can directly be used to electroplating production line's washing workshop section, the quantity of running water has been practiced thrift greatly, install the electrodialysis equipment additional simultaneously, the concentration with nickeliferous solution further improves, can directly compile electroplating production line's stoste groove reuse, and can long-term steady operation, in addition, the waste water treatment unit is directly arranged into to surplus waste liquid, also can avoid the organic matter to front end two-stage reverse osmosis unit's pollution, reduce the washing number of times to reverse osmosis unit.
Drawings
In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic view of a pipeline of the high-power nickel electroplating concentration device of the present invention;
FIG. 2 is a schematic piping diagram of another embodiment of the apparatus for high-power concentrating of electroplated nickel of the present invention.
The specification reference numbers indicate: 1. a nickel-containing wastewater collection box; 2. a quartz sand filter; 3. an activated carbon filter; 4. a cartridge filter; 5. a fine filtration production water tank; 6. a first-stage reverse osmosis device; 7. a secondary reverse osmosis device; 8. an electrodialysis unit; 9. a concentrated liquid collecting box; 10. a wastewater treatment unit; 11. an evaporative crystallization unit; 12. a water washing section of the electroplating production line; 13. a stock solution tank of an electroplating production line.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not limited to the present invention.
Referring to fig. 1, the utility model provides a nickel electroplating high power concentration device, including:
the nickel-containing wastewater collection box 1 comprises a collection box inlet and a collection box outlet, wherein the collection box inlet is communicated with a water washing working section 12 of an electroplating production line;
specifically, the device is directly used for communicating with a water washing working section 12 of an electroplating production line, and does not cause the enrichment of organic matters, so that the biochemical treatment is not needed.
The coarse filtration unit comprises a coarse filtration unit inlet and a coarse filtration unit outlet, and the coarse filtration unit inlet is communicated with the collection box outlet;
the fine filtering unit comprises a fine filtering unit inlet and a fine filtering unit outlet, and the fine filtering unit inlet is communicated with the coarse filtering unit outlet;
specifically, the coarse filtration unit and the fine filtration unit can remove particles and impurities in the wastewater.
The first-stage reverse osmosis device 6 comprises an inlet of the first-stage reverse osmosis device 6 and an outlet of the first-stage reverse osmosis device 6, and the inlet of the first-stage reverse osmosis device 6 is communicated with the outlet of the fine filtration unit;
the second-stage reverse osmosis device 7 comprises a second-stage reverse osmosis device 7 inlet, a second-stage reverse osmosis device 7 outlet and a produced water outlet, wherein the second-stage reverse osmosis device 7 inlet is communicated with the first-stage reverse osmosis device 6 outlet, and the produced water outlet is communicated with a water washing section 12 of the electroplating production line;
specifically, most of ions in the wastewater treated by the RO membrane in the reverse osmosis device are intercepted and can be reduced to 1ppm at least, the wastewater can directly return to the washing section 12 of the electroplating production line, the treatment load of the wastewater treatment unit 10 can be reduced, the addition of a medicament is reduced, the treatment cost is reduced, the stable standard of effluent metal ions is ensured, the use amount of tap water in the washing section can be saved, and the purpose of saving the cost is achieved.
More, the heavy metal ion solution retained by the RO membrane is discharged as the concentrated water of the membrane, and can form nickel sulfate or nickel ammonium sulfonate solution with concentration of about 1%.
The electrodialysis unit 8 comprises an electrodialysis unit 8 inlet, an electrodialysis unit 8 outlet and a waste liquid outlet, the electrodialysis unit 8 inlet is communicated with the first-stage reverse osmosis device 6 outlet and the second-stage reverse osmosis device 7 outlet, and the electrodialysis unit 8 outlet is communicated with a stock solution tank 13 of the electroplating production line;
specifically, after the concentrated solution enters the electrodialysis device, a semi-permeable membrane is arranged in the electrodialysis device, ions in water migrate through the membrane under the action of an electric field, and the semi-permeable membrane used in electrodialysis is actually an ion exchange membrane which can be divided into a cation exchange membrane (positive membrane) and an anion exchange membrane (negative membrane) according to the charge property of the ions. Meanwhile, in the electrodialysis process, the ion exchange membrane does not exchange with certain ions in the aqueous solution like ion exchange resin, but only plays a role in selectively permeating ions with different electric properties, i.e. the ion exchange membrane does not need to be regenerated, so the operation process of the electrodialysis unit 8 is quite stable.
More, the concentration of nickel sulfate or nickel ammonium sulfonate in the concentrated water generated by electrodialysis can reach more than 17% through the selective passing of the semi-permeable membrane, and the concentrated water can be directly used as the stock solution of the electroplated nickel in a nickel plating production line, so that the use amount of the stock solution of the electroplated nickel is saved.
And a waste water treatment unit 10 communicated with the waste liquid outlet.
Specifically, the organic matter in the wastewater enters the reverse osmosis unit partially, the organic matter is intercepted by the reverse osmosis unit, the concentrated water after reverse osmosis enters the electrodialysis unit 8, and the electrodialysis unit 8 cannot intercept the organic matter, that is, the produced water of the electrodialysis unit 8 contains a large amount of organic matter, and the produced water after electroosmosis directly flows into the wastewater treatment unit 10 to completely remove the organic matter from the system, so as to avoid blocking various membrane products in the system.
In conclusion, the device is additionally provided with the first-stage reverse osmosis device 6 and the second-stage reverse osmosis device 7 after the coarse filtration unit and the fine filtration unit, so that the concentration of the nickel-containing wastewater can be improved, the produced water can be directly used in a washing section 12 of an electroplating production line, the consumption of tap water is greatly saved, meanwhile, the electrodialysis device is additionally arranged, the concentration of the nickel-containing solution is further improved, the nickel-containing solution can be directly converged into a stock solution tank 13 of the electroplating production line for recycling, the long-term stable operation can be realized, in addition, the residual waste liquid is directly discharged into the wastewater treatment unit 10, the pollution of organic matters to the front two-stage reverse osmosis device can be avoided, and the cleaning times of the reverse osmosis device are reduced.
Furthermore, the rough filtering unit comprises a quartz sand filter 2 and an active carbon filter 3, wherein the active carbon filter 3 is communicated with the quartz sand filter 2, the quartz sand filter 2 is communicated with the nickel-containing wastewater collecting box 1, and the active carbon filter 3 is communicated with the fine filtering unit.
Furthermore, the fine filtration unit comprises a security filter 4 and a fine filtration water tank 5, the fine filtration water tank 5 is communicated with the security filter 4, the security filter 4 is communicated with the activated carbon filter 3, and the fine filtration water tank 5 is communicated with the first-stage reverse osmosis device 6.
Specifically, the security filter 4 is mainly used for filtering fine substances (such as tiny quartz sand, activated carbon particles and the like) filtered by the front end so as to ensure that the water quality filtering precision and the protective film filtering element are not damaged by large-particle substances, the precision grade of the filtering element arranged in the precise filtering device can be divided into 0.5 mu s,1 mu s,5 mu s,10 mu s and the like, and different filtering precisions can be selected according to different use occasions so as to ensure the precision of the back water outlet and the safety of the inner membrane element of the back-end reverse osmosis device.
Further, a concentrated solution collecting box 9 is arranged between the secondary reverse osmosis device 7 and the electrodialysis unit 8.
Specifically, the outlet of the concentrated liquid collecting box 9 is also provided with a stop valve, so that the liquid in the concentrated liquid collecting box 9 can be manually blocked.
Further, a delivery pump is arranged between the nickel-containing wastewater collection box 1 and the rough filtering unit.
Specifically, the conveying pump can increase the pressure of nickel-containing wastewater entering the rough filtering unit so as to improve the filtering effect of the nickel-containing wastewater.
Furthermore, a high-pressure pump is arranged between the fine filtration unit and the first-stage reverse osmosis device 6.
Specifically, the high-pressure pump can pressurize the filtered wastewater to 2-2.5Mpa, and the wastewater is filtered by a two-stage low-pressure RO membrane, so that the retention rate of nickel sulfate or nickel ammonium sulfonate can reach more than 99%.
Furthermore, the inlet of the electrodialysis unit 8 is provided with a first branch pipe, the first branch pipe comprises two inlets, and the two inlets of the branch pipe are respectively connected with the outlet of the first-stage reverse osmosis device 6 and the outlet of the second-stage reverse osmosis device 7.
Referring to fig. 2, in another embodiment of the present invention, the present invention further comprises an evaporative crystallization unit 11, wherein the evaporative crystallization unit 11 is communicated with the outlet of the electrodialysis apparatus.
Specifically, when the nickel solution generated without electrodialysis enters the stock solution tank, the nickel can be directly purified by the evaporative crystallization unit 11, so that the utilization rate of the nickel can be improved.
More, the evaporation crystallization unit 11 comprises an MVR evaporator, a condenser and a crystallization collector, firstly, the electrodialysis treatment fluid in the electrodialysis unit 8 is conveyed into the MVR evaporator by a pump for evaporation crystallization, then, condensed water generated by evaporation is recovered through the condenser, evaporated crystallization salt is conveyed to the crystallization salt collector, and then, residual industrial salt in the crystallization salt collector is recovered and purified, so that the economic value is good.
Further, the outlet of the electrodialysis unit 8 is provided with a second branch pipe, the second branch pipe comprises two outlets, and the two outlets of the second branch pipe are respectively communicated with the evaporative crystallization unit 11 and the stock solution tank.
Specifically, a second branch pipe is clamped in the middle section of an outlet pipeline of the electrodialysis unit 8, and a conveying pump can be additionally arranged at the rear ends of two outlets of the second branch pipe to improve the conveying speed of the liquid output by the electrodialysis unit 8.
Further, a first stop valve is arranged between the second branch pipe and the stock solution tank, and a second stop valve is arranged between the second branch pipe and the evaporative crystallization unit 11.
Specifically, when the electrodialysis treatment liquid needs to flow back into the raw liquid tank, the first stop valve can be opened while the second stop valve is closed, and when the electrodialysis treatment liquid needs to be purified, the second stop valve can be opened while the first stop valve is closed.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (10)
1. An electronickelling high power concentration device, comprising:
the nickel-containing wastewater collection box comprises a collection box inlet and a collection box outlet, wherein the collection box inlet is communicated with a water washing working section of the electroplating production line;
the coarse filtration unit comprises a coarse filtration unit inlet and a coarse filtration unit outlet, and the coarse filtration unit inlet is communicated with the collection box outlet;
the fine filtering unit comprises a fine filtering unit inlet and a fine filtering unit outlet, and the fine filtering unit inlet is communicated with the coarse filtering unit outlet;
the first-stage reverse osmosis device comprises a first-stage reverse osmosis device inlet and a first-stage reverse osmosis device outlet, and the first-stage reverse osmosis device inlet is communicated with the outlet of the fine filtration unit;
the second-stage reverse osmosis device comprises a second-stage reverse osmosis device inlet, a second-stage reverse osmosis device outlet and a produced water outlet, wherein the second-stage reverse osmosis device inlet is communicated with the first-stage reverse osmosis device outlet, and the produced water outlet is communicated with a water washing section of the electroplating production line;
the electrodialysis unit comprises an electrodialysis unit inlet, an electrodialysis unit outlet and a waste liquid outlet, wherein the electrodialysis unit inlet is communicated with the outlet of the first-stage reverse osmosis device and the outlet of the second-stage reverse osmosis device, and the electrodialysis unit outlet is communicated with a stock solution tank of an electroplating production line;
and the wastewater treatment unit is communicated with the waste liquid outlet.
2. The electrogilding high-power concentrating apparatus as claimed in claim 1, wherein: the rough filtering unit comprises a quartz sand filter and an activated carbon filter, the activated carbon filter is communicated with the quartz sand filter, the quartz sand filter is communicated with the nickel-containing wastewater collecting box, and the activated carbon filter is communicated with the fine filtering unit.
3. The electrogilding high-power concentrating apparatus as claimed in claim 2, wherein: the fine filtration unit comprises a security filter and a fine filtration water tank, the fine filtration water tank is communicated with the security filter, the security filter is communicated with the activated carbon filter, and the fine filtration water tank is communicated with the primary reverse osmosis device.
4. The nickel electroplating high power concentration device according to claim 1, wherein: and a concentrated solution collecting box is arranged between the secondary reverse osmosis device and the electrodialysis unit.
5. The electrogilding high-power concentrating apparatus as claimed in claim 1, wherein: a delivery pump is arranged between the nickel-containing wastewater collection box and the rough filtering unit.
6. The electrogilding high-power concentrating apparatus as claimed in claim 1, wherein: a high-pressure pump is arranged between the fine filtration unit and the first-stage reverse osmosis device.
7. The electrogilding high-power concentrating apparatus as claimed in claim 1, wherein: the electrodialysis unit inlet is provided with a first branch pipe, the first branch pipe comprises two inlets, and the two inlets of the branch pipe are respectively connected with the outlet of the first-stage reverse osmosis device and the outlet of the second-stage reverse osmosis device.
8. The electrogilding high-power concentrating apparatus as claimed in claim 1, wherein: the device also comprises an evaporation crystallization unit, and the evaporation crystallization unit is communicated with the outlet of the electrodialysis unit.
9. The electrogilding high-power concentrating apparatus as claimed in claim 8, wherein: and a second branch pipe is arranged at the outlet of the electrodialysis unit and comprises two outlets, and the two outlets of the second branch pipe are respectively communicated with the evaporative crystallization unit and the stock solution tank.
10. The electrogilding high-power concentrating apparatus as claimed in claim 9, wherein: a first stop valve is arranged between the second branch pipe and the raw liquid tank, and a second stop valve is arranged between the second branch pipe and the evaporative crystallization unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202221259671.6U CN217323743U (en) | 2022-05-24 | 2022-05-24 | High-power enrichment facility of electronickelling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221259671.6U CN217323743U (en) | 2022-05-24 | 2022-05-24 | High-power enrichment facility of electronickelling |
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| CN217323743U true CN217323743U (en) | 2022-08-30 |
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| CN202221259671.6U Active CN217323743U (en) | 2022-05-24 | 2022-05-24 | High-power enrichment facility of electronickelling |
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