CN202688148U - Electroplating wastewater treatment and recycling system - Google Patents
Electroplating wastewater treatment and recycling system Download PDFInfo
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- CN202688148U CN202688148U CN 201220288362 CN201220288362U CN202688148U CN 202688148 U CN202688148 U CN 202688148U CN 201220288362 CN201220288362 CN 201220288362 CN 201220288362 U CN201220288362 U CN 201220288362U CN 202688148 U CN202688148 U CN 202688148U
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Abstract
The utility model discloses an electroplating wastewater treatment and recycling system which comprises a workshop cyanide-containing wastewater treatment unit, a workshop nickel-containing wastewater treatment unit, a workshop chromium-containing wastewater treatment unit, a workshop comprehensive wastewater treatment unit and a workshop pretreatment wastewater treatment unit; the workshop nickel-containing wastewater treatment unit is connected with a nickel ion exchange and reclaiming device; the workshop chromium-containing wastewater treatment unit is connected with a chromium ion exchange and reclaiming device; the workshop comprehensive wastewater treatment unit is connected with a heavy metal ion exchange and reclaiming device; the workshop cyanide-containing wastewater treatment unit, the nickel ion exchange and reclaiming device, the chromium ion exchange and reclaiming device and the heavy metal ion exchange and reclaiming device are all connected to a buffer pool; the buffer pool is connected with a two-stage reverse osmosis device; the workshop pretreatment wastewater treatment unit is connected with a primary reverse osmosis device; and the two-stage reverse osmosis device and the primary reverse osmosis device are connected with a recycling water pool. The system has the advantages that the amount of sludge is small, the operation stability of a membrane system is good, and the wastewater recycling rate can reach over 75%.
Description
Technical field
The utility model relates to the field of waste water treatment technology, refers in particular to a kind of electroplating wastewater treatment reclaiming system.
Background technology
Electroplating industry plays an important role to China's Economic development, but its production process water loss is larger, and is serious to the ambient water body pollution.For carrying out cleaner production, realize energy-saving and emission-reduction, save water resources, some areas propose the waste discharge reuse for electroplating enterprise and are not less than 60% requirement, and this is saving water resource, an Important Action that reduces water resource pollution.
At present, what electroplating wastewater processing was the most frequently used is membrane separation technique, for example with micro-filtration, ultrafiltration, nanofiltration and anti-art permeable membrane carry out multistage-combination and use, but electroplating wastewater carries out needing electroplating wastewater is carried out pre-treatment before the membrane separation, in the prior art, nearly all be to add flocculating settling behind a large amount of chemical agents in the electroplating wastewater pretreatment unit, remove the heavy metal ion in the electroplating wastewater, yet add the cost that chemical agent not only improves wastewater treatment, and can produce more mud, and there is simultaneously a large amount of colloidal particles to be brought in the membrane separation unit, cause film to pollute, the phenomenons such as film obstruction, reduce membrane flux, the reuse water rate of recovery reduces.
The utility model content
In view of this, the utility model is for the disappearance of prior art existence, and its main purpose provides a kind of heavy metal that can effectively reclaim in the waste water and carries out resource reutilization and wastewater recycle rate and can reach electroplating wastewater treatment reclaiming system more than 75%.
For achieving the above object, the utility model adopts following technical scheme:
A kind of electroplating wastewater treatment reclaiming system, comprise workshop cyanide wastewater processing unit, workshop nickel-containing waste water processing unit, workshop chromate waste water processing unit, workshop comprehensive wastewater processing unit and workshop pre-treatment treatment unit for waste water, this workshop nickel-containing waste water processing unit is connected with the nickel ion exchange recovery device, this workshop chromate waste water processing unit is connected with the chromium ion exchange recovery device, this workshop comprehensive wastewater processing unit is connected with the heavy metal ion exchange recovery device, workshop cyanide wastewater processing unit, the nickel ion exchange recovery device, chromium ion exchange recovery device and heavy metal ion exchange recovery device all are connected in Buffer Pool, this Buffer Pool is connected in the two steps ro device, described workshop pre-treatment treatment unit for waste water is connected in the first-stage reverse osmosis device, described two steps ro device, the first-stage reverse osmosis device is connected in reuse pool.
As a kind of preferred version, described workshop cyanide wastewater processing unit includes workshop cyanide wastewater equalizing tank, pump, secondary broken cyanide pond, coagulation reaction tank and MCR film-settling tank, and this MCR film-settling tank is connected with Buffer Pool.
As a kind of preferred version, described workshop nickel-containing waste water processing unit includes workshop nickel-containing waste water equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the nickel ion exchange recovery device.
As a kind of preferred version, described workshop chromate waste water processing unit includes workshop chromate waste water equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the chromium ion exchange recovery device.
As a kind of preferred version, described workshop comprehensive wastewater processing unit includes workshop comprehensive wastewater equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the heavy metal ion exchange recovery device.
As a kind of preferred version, described workshop pre-treatment treatment unit for waste water is connected with workshop pre-treatment wastewater equalization pond, pump, pH regulator pond, waste water reaction pond, waste water coacervation pond, physico-chemical precipitation pond, pH readjustment pond, hydrolysis acidification pool, Aerobic Pond, MBR pond and MBR outlet sump in turn, and this MBR outlet sump is connected with the first-stage reverse osmosis device by pump.
As a kind of preferred version, be provided with ultra-filtration equipment and ultrafiltration outlet sump between described two steps ro device and the Buffer Pool, this ultra-filtration equipment is connected with Buffer Pool, described two steps ro device includes first-stage reverse osmosis device and second level reverse osmosis apparatus, this first-stage reverse osmosis device is provided with the first water-in, the first water outlet and the first dense water out, this first water-in is connected with the ultrafiltration outlet sump, this first water outlet is connected in reuse tank, this first dense water out is connected with a dense pond, described second level reverse osmosis apparatus is provided with the second water-in, the second water outlet and the second dense water out, this second water-in is connected with dense pond, this second water outlet is connected with reuse tank, and this second dense water out is connected with a dense water treatment device.
The utility model compared with prior art has obvious advantage and beneficial effect, particularly, has such scheme as can be known:
Compare with traditional chemical method+embrane method system recoveries technique, adopt this programme technology, can greatly reduce medicament and energy consumption, the generation sludge quantity is few, saved the sludge treatment expense, and there are not the secondary pollution and the salinity rising problem that produce owing to the chemical method dispensing, reduced operating load and the technique risk of film system, improved the embrane method Systems balanth; Heavy metal ion in simultaneously can effective recycling waste water not only reduces the pollution to environment, and can reduce the wastewater treatment load effectively with heavy metal waste liquid resource reutilization, so that the total reclamation rate of waste water reaches more than 75%, improves economic worth.
Description of drawings
Fig. 1 is the wastewater treatment and renovation system simplified schematic diagram of the embodiment of the utility model.
Fig. 2 is the wastewater treatment and renovation system detailed maps of the embodiment of the utility model.
Embodiment
Please refer to shown in Fig. 1 ~ 2, it has shown the concrete structure of the preferred embodiment of the utility model, a kind of electroplating wastewater treatment reclaiming system comprises workshop cyanide wastewater processing unit, workshop nickel-containing waste water processing unit, workshop chromate waste water processing unit, workshop comprehensive wastewater processing unit and workshop pre-treatment treatment unit for waste water.This workshop nickel-containing waste water processing unit is connected with the nickel ion exchange recovery device, this workshop chromate waste water processing unit is connected with the chromium ion exchange recovery device, this workshop comprehensive wastewater processing unit is connected with the heavy metal ion exchange recovery device, workshop cyanide wastewater processing unit, the nickel ion exchange recovery device, chromium ion exchange recovery device and heavy metal ion exchange recovery device all are connected in Buffer Pool, this Buffer Pool is connected in the two steps ro device, described workshop pre-treatment treatment unit for waste water is connected in the first-stage reverse osmosis device, described two steps ro device, the first-stage reverse osmosis device is connected in reuse pool.The RO concentrated stream that this two steps ro device and first-stage reverse osmosis device produce enters in the dense water treatment device to process.
This workshop cyanide wastewater processing unit includes workshop cyanide wastewater equalizing tank, pump, secondary broken cyanide pond, coagulation reaction tank and MCR film-settling tank, and this MCR film-settling tank is connected with Buffer Pool.
This workshop nickel-containing waste water processing unit includes workshop nickel-containing waste water equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the nickel ion exchange recovery device.
This workshop chromate waste water processing unit includes workshop chromate waste water equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the chromium ion exchange recovery device.
This workshop comprehensive wastewater processing unit includes workshop comprehensive wastewater equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the heavy metal ion exchange recovery device.
This workshop pre-treatment treatment unit for waste water is connected with workshop pre-treatment wastewater equalization pond, pump, pH regulator pond, waste water reaction pond, waste water coacervation pond, physico-chemical precipitation pond, pH readjustment pond, hydrolysis acidification pool, Aerobic Pond, MBR pond and MBR outlet sump in turn, and this MBR outlet sump is connected with the first-stage reverse osmosis device.
Be provided with ultra-filtration equipment and ultrafiltration outlet sump between this two steps ro device and the Buffer Pool, this ultra-filtration equipment is connected with Buffer Pool by pump, described two steps ro device includes first-stage reverse osmosis device and second level reverse osmosis apparatus, this first-stage reverse osmosis device is provided with the first water-in, the first water outlet and the first dense water out, this first water-in is connected with the ultrafiltration outlet sump by pump, this first water outlet is connected in reuse tank, this first dense water out is connected with a dense pond, described second level reverse osmosis apparatus is provided with the second water-in, the second water outlet and the second dense water out, this second water-in is connected with the second dense pond, this second water outlet is connected with reuse tank, and this second dense water out is connected with a dense water treatment device.
It is as follows that present embodiment electroplating wastewater treatment reclaiming principle and process thereof are described in detail in detail:
1, in cyanide wastewater reason unit, cyanide wastewater is beaten to two-stage broken cyanide pond with pump, adjust pH value to 10～11 o'clock input drift ices, behind the one-level broken cyanide, adjust pH value to 7～8 again and o'clock drop into drift ice again and carry out the reaction of secondary broken cyanide, water outlet adds the unnecessary oxygenant of reductive agent reduction, adds sheet alkali again the pH value is adjusted to suitable scope, enter MCR film-settling tank after adding a small amount of coagulating agent, water outlet is evacuated to Buffer Pool through vacuum pump again.
In the nickel-containing waste water processing unit, nickel-containing waste water is through suspended substance, silt, impurity and the partial organic substances etc. of sandfiltration pot to remove larger particles in the former water, and water outlet enters the nickel ion exchange recovery device and reclaims the nickel metal ion, when producing water Ni
2+When surpassing set(ting)value, out of service, enter reproducer, utilize the regeneration of strong acid wash-out and reclaim(ed) sulfuric acid nickel, nickel reclaims liquid concentration Ni
2+﹥ 25g/L can process as precious metals waste liquid recycling or outward transport.Retrieving arrangement produces water Ni
2+﹤ 0.5mg/L, water outlet flows into Buffer Pool.
In the process for processing chromate-containing waste water unit, chromate waste water is through suspended substance, silt, impurity and the partial organic substances etc. of strainer to remove larger particles in the former water, and water outlet enters the chromium ion exchange recovery device and reclaims chromic acid, when producing water Cr
6+When surpassing set(ting)value, out of service, enter reproducer, utilize the regeneration of highly basic wash-out and reclaim chromic acid, chromium reclaims liquid concentration 30 ~ 60g/L(with CrO
3Meter), can process as precious metals waste liquid recycling or outward transport.Cr after the recovery
6+﹤ 0.1mg/L, water outlet flows into Buffer Pool.
In the comprehensive wastewater processing unit, comprehensive wastewater is through suspended substance, silt, impurity and the partial organic substances etc. of strainer to remove larger particles in the former water, and water outlet enters the heavy metal ion exchange recovery device and reclaims copper metal ion, when producing water Cu
2+When surpassing set(ting)value, out of service, enter reproducer, utilize the regeneration of strong acid wash-out and reclaim(ed) sulfuric acid copper, copper reclaims liquid concentration C u
2+﹥ 25g/L can process as precious metals waste liquid recycling or outward transport.Cu after the recovery
2+﹤ 0.5mg/L, water outlet flows into Buffer Pool.
Above-mentioned pretreated Waste Water Centralized is carried out the adjusting of water quantity and quality in Buffer Pool after, first behind ultrafiltration, first-stage reverse osmosis, recyclable waste water more than 60%, for improving the system water utilization ratio, again the dense water of first-stage reverse osmosis device is sent in the second level reverse osmosis apparatus, second level reverse osmosis apparatus adopts the stronger reverse-osmosis membrane element of contamination resistance, and adopt large flow circulation cross-flow mode to design, the device rate of recovery is more than 50%, first-stage reverse osmosis device and second level reverse osmosis apparatus produce hydration and send into reuse pool, and water quality can reach local tap water standard.The concentrated water drainage of reverse osmosis is processed to dense water treatment device.
Compare with traditional chemical method+embrane method system recoveries technique, adopt this programme technology, can greatly reduce medicament and energy consumption, the generation sludge quantity is few, saved the sludge treatment expense, and there are not the secondary pollution and the salinity rising problem that produce owing to the chemical method dispensing, reduced operating load and the technique risk of film system, improved the embrane method Systems balanth; Heavy metal ion in simultaneously can effective recycling waste water not only reduces the pollution to environment, and can reduce the wastewater treatment load effectively with heavy metal waste liquid resource reutilization, so that wastewater recycle rate reaches more than 75%, improves economic worth.
2, contain the organism such as emulsion, tensio-active agent and chemical solvents in the pre-treatment waste water, pollutant component is complicated, contains a small amount of heavy metal ion in the waste water, needs to enter follow-up biochemical degradation technique through after the electroplating effluent recycling and using again.
The pre-treatment wastewater collection is to the pre-treatment wastewater equalization pond, beat to pH adjustment pond with pump behind the homogenizing water quality and quantity, add alkali and regulate the rear water outlet of pH value to coagulation reaction tank, add a small amount of coagulating agent, mixture-aid agent is converted into precipitable thing with heavy metal ion and separates out at settling tank, supernatant liquor enters pH readjustment pond.
In pre-treatment waste water recycling unit, the pond water outlet of pre-treatment waste water pretreatment system pH readjustment enters acidication-aerobic-MBR device, the two embrane method intermediate water reuse systems of MBR water outlet termination, ultrafiltration recoil draining venting pre-treatment wastewater equalization pond, reverse osmosis produced water is to reuse pool, then centralized reuse workshop, the RO concentrated water discharge is processed in dense water treatment device.
The above, it only is preferred embodiment of the present utility model, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment makes.
Claims (7)
1. electroplating wastewater treatment reclaiming system, comprise workshop cyanide wastewater processing unit, workshop nickel-containing waste water processing unit, workshop chromate waste water processing unit, workshop comprehensive wastewater processing unit and workshop pre-treatment treatment unit for waste water, it is characterized in that: this workshop nickel-containing waste water processing unit is connected with the nickel ion exchange recovery device, this workshop chromate waste water processing unit is connected with the chromium ion exchange recovery device, this workshop comprehensive wastewater processing unit is connected with the heavy metal ion exchange recovery device, workshop cyanide wastewater processing unit, the nickel ion exchange recovery device, chromium ion exchange recovery device and heavy metal ion exchange recovery device all are connected in Buffer Pool, this Buffer Pool is connected in the two steps ro device, described workshop pre-treatment treatment unit for waste water is connected in the first-stage reverse osmosis device, described two steps ro device, the first-stage reverse osmosis device is connected in reuse pool.
2. described a kind of electroplating wastewater treatment reclaiming system according to claim 1, it is characterized in that: described workshop cyanide wastewater processing unit includes workshop cyanide wastewater equalizing tank, pump, secondary broken cyanide pond, coagulation reaction tank and MCR film-settling tank, and this MCR film-settling tank is connected with Buffer Pool.
3. described a kind of electroplating wastewater treatment reclaiming system according to claim 1, it is characterized in that: described workshop nickel-containing waste water processing unit includes workshop nickel-containing waste water equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the nickel ion exchange recovery device.
4. described a kind of electroplating wastewater treatment reclaiming system according to claim 1, it is characterized in that: described workshop chromate waste water processing unit includes workshop chromate waste water equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the chromium ion exchange recovery device.
5. described a kind of electroplating wastewater treatment reclaiming system according to claim 1, it is characterized in that: described workshop comprehensive wastewater processing unit includes workshop comprehensive wastewater equalizing tank, pump and sandfiltration pot, and this sandfiltration pot is connected with the heavy metal ion exchange recovery device.
6. described a kind of electroplating wastewater treatment reclaiming system according to claim 1, it is characterized in that: described workshop pre-treatment treatment unit for waste water is connected with workshop pre-treatment wastewater equalization pond, pump, pH regulator pond, waste water reaction pond, waste water coacervation pond, physico-chemical precipitation pond, pH readjustment pond, hydrolysis acidification pool, Aerobic Pond, MBR pond and MBR outlet sump in turn, and this MBR outlet sump is connected with the first-stage reverse osmosis device.
7. described a kind of electroplating wastewater treatment reclaiming system according to claim 1, it is characterized in that: be provided with ultra-filtration equipment and ultrafiltration outlet sump between described two steps ro device and the Buffer Pool, this ultra-filtration equipment is connected with Buffer Pool, described two steps ro device includes first-stage reverse osmosis device and second level reverse osmosis apparatus, this first-stage reverse osmosis device is provided with the first water-in, the first water outlet and the first dense water out, this first water-in is connected with the ultrafiltration outlet sump, this first water outlet is connected in reuse tank, this first dense water out is connected with a dense pond, described second level reverse osmosis apparatus is provided with the second water-in, the second water outlet and the second dense water out, this second water-in is connected with dense pond, this second water outlet is connected with reuse tank, and this second dense water out is connected with a dense water treatment device.
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| CN 201220288362 CN202688148U (en) | 2012-06-19 | 2012-06-19 | Electroplating wastewater treatment and recycling system |
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| CN 201220288362 CN202688148U (en) | 2012-06-19 | 2012-06-19 | Electroplating wastewater treatment and recycling system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539303A (en) * | 2013-11-15 | 2014-01-29 | 中冶华天工程技术有限公司 | Electroplating wastewater treating and recycling process and system |
| CN104150633A (en) * | 2013-05-13 | 2014-11-19 | 欣兴电子股份有限公司 | Wastewater treatment method and wastewater treatment device |
| CN105884149A (en) * | 2016-06-28 | 2016-08-24 | 吴荐玮 | Process for treating wastewater in electroplate factories |
| CN106396294A (en) * | 2016-12-06 | 2017-02-15 | 大同新成新材料股份有限公司 | Treatment method of lithium battery electrolyte cask washing wastewater |
| CN106865920A (en) * | 2017-04-18 | 2017-06-20 | 昆明标洁环保科技有限责任公司 | Deep treatment method and reuse technology containing acid waste water containing heavy metal ions |
| CN107162275A (en) * | 2017-07-05 | 2017-09-15 | 中山市中开环保设备制造有限公司 | A kind of medical waste water processing system |
| CN108751281A (en) * | 2018-06-09 | 2018-11-06 | 深圳市中电数通智慧安全科技股份有限公司 | A kind of industry park wastewater treatment intelligent monitor system |
| CN109111034A (en) * | 2018-08-31 | 2019-01-01 | 苏州新工环境工程技术有限公司 | Electroplating waste water high-efficiency processing system and its processing method |
| CN109160664A (en) * | 2018-10-30 | 2019-01-08 | 江苏旭龙环境科技有限公司 | A kind of electroplating wastewater zero equipment and application method |
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2012
- 2012-06-19 CN CN 201220288362 patent/CN202688148U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150633A (en) * | 2013-05-13 | 2014-11-19 | 欣兴电子股份有限公司 | Wastewater treatment method and wastewater treatment device |
| CN103539303A (en) * | 2013-11-15 | 2014-01-29 | 中冶华天工程技术有限公司 | Electroplating wastewater treating and recycling process and system |
| CN105884149A (en) * | 2016-06-28 | 2016-08-24 | 吴荐玮 | Process for treating wastewater in electroplate factories |
| CN105884149B (en) * | 2016-06-28 | 2019-01-01 | 吴荐玮 | The waste water treatment process of electroplate factory |
| CN106396294A (en) * | 2016-12-06 | 2017-02-15 | 大同新成新材料股份有限公司 | Treatment method of lithium battery electrolyte cask washing wastewater |
| CN106865920A (en) * | 2017-04-18 | 2017-06-20 | 昆明标洁环保科技有限责任公司 | Deep treatment method and reuse technology containing acid waste water containing heavy metal ions |
| CN106865920B (en) * | 2017-04-18 | 2020-10-30 | 昆明标洁环保科技有限责任公司 | Advanced treatment method and recycling process of acid wastewater containing heavy metal ions |
| CN107162275A (en) * | 2017-07-05 | 2017-09-15 | 中山市中开环保设备制造有限公司 | A kind of medical waste water processing system |
| CN108751281A (en) * | 2018-06-09 | 2018-11-06 | 深圳市中电数通智慧安全科技股份有限公司 | A kind of industry park wastewater treatment intelligent monitor system |
| CN109111034A (en) * | 2018-08-31 | 2019-01-01 | 苏州新工环境工程技术有限公司 | Electroplating waste water high-efficiency processing system and its processing method |
| CN109160664A (en) * | 2018-10-30 | 2019-01-08 | 江苏旭龙环境科技有限公司 | A kind of electroplating wastewater zero equipment and application method |
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Granted publication date: 20130123 Termination date: 20160619 |
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