CN106215708A - Improve the short-cut method of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency - Google Patents
Improve the short-cut method of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency Download PDFInfo
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- CN106215708A CN106215708A CN201610792196.1A CN201610792196A CN106215708A CN 106215708 A CN106215708 A CN 106215708A CN 201610792196 A CN201610792196 A CN 201610792196A CN 106215708 A CN106215708 A CN 106215708A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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Abstract
The present invention relates to a kind of short-cut method improving nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency, the method is that to add mass ratio in described nickel zinc electroplate rinsing wastewater online resource embrane method closed-system be phosphino-polycarboxylic acids sodium and the polyepoxy sodium succinate binary complex reagent of 1:10～10:1, and addition is that to make the total concentration of its dense side of film in systems be 1.0～100ppm.Compared with prior art, the present invention has a performance being substantially improved nickel zinc electroplate rinsing wastewater online resource embrane method closed-system, reduces cost, can be carried out continuously, is formed without the advantages such as secondary pollution.
Description
Technical field
The present invention relates to field of environment protection, specifically, refer to a kind of raising nickel zinc electroplate rinsing wastewater online
The short-cut method of resource embrane method closed-system efficiency.
Background technology
Plating is the important process link of manufacturing, waste discharge complicated component.The average annual discharge capacity of China's electroplating wastewater
Up to 4,000,000,000 tons, wherein poaching wastewater accounts for 80%, about 3,200,000,000 tons.Nickel and zinc is a kind of main plating in China, corresponding nickel
Zinc electroplate rinsing wastewater is also the electroplate rinsing wastewater that discharge capacity is bigger.Except the heavy metal pollutant containing nickel zinc ion,
Possibly together with organic compound such as a considerable amount of additives, brighteners, these chemical substances enter environment, will necessarily be good for the mankind
Health and environment cause and serious harm.
Nickel zinc electroplate rinsing wastewater processes most common method at present chemical precipitation method, ion exchange and membrance separation
Method, but chemical precipitation method is for the purpose of qualified discharge, and sludge quantity is big, and processing cost is high, and heavy metal nickel zinc is not considered as one
Plant resource reusing, cause economic benefit the most negative.Ion exchange can only realize the reuse of heavy metal nickel zinc ion, and other
Material such as various additives then must cannot be gone containing the various additives in addition to nickel zinc ion in reuse, and waste water further
Except could discharging or reclaim afterwards, additionally, also need medicament to regenerate after ion exchange resin absorption is saturated, produce secondary pollution.Specially
A kind of method that the patent of invention of profit Application No. 201610331251.7 discloses plating piece poaching wastewater online resource, the party
Method be plating piece poaching wastewater is sequentially passed through multi-stage countercurrent cleaning, filtration, reverse-osmosis treated, nanofiltration process and evaporation and concentrating or
Direct reuse, reclaims the metal ion in plating piece poaching wastewater and additive, returns in plating piece groove as plating piece liquid, reclaims plating piece
Water in poaching wastewater, the reuse as plating piece washings, it is achieved online resourceization utilizes.Compared with prior art, this invention
Use reverse osmosis membrane assembly in front, nanofiltration membrane component posterior novel compositions mode, it is possible to effectively in reuse plating piece poaching wastewater
Heavy metal ion and various additives and water, it is achieved the online resource of plating piece poaching wastewater, and greatly reduce operation energy
Consumption and Financial cost.
Compared with chemical precipitation method and ion exchange, embrane method is not only administering method, and is a kind of method of resource,
Realize the recycling of pollutant.But embrane method there is also a shortcoming, i.e. film is vulnerable to the pollution of electroplating bath components, thus logical
Amount declines, and energy consumption increases.For reverse osmosis and NF membrane, Chemical cleaning is the main method controlling fouling membrane." Nanjing Normal University is learned
Report (natural science edition) " the 2nd phase of volume 33 " is applied to the Chemical cleaning of the reverse osmosis membrane of an electroplating wastewater processing " literary composition, to application
Reverse osmosis unit in electroplating wastewater processing has carried out the research of Chemical cleaning, removes removing heavy metals initially with 1% chlorohydric acid pickling
Pollute, then use 1%NaOH and 0.025% dodecylbenzene sodium sulfonate (SDS) mixing cleanout fluid to carry out alkali cleaning and remove face
Organic pollution, the non oxidizing bactericide 2 finally using concentration to be 50mg/L, the double bromo-3-nitrilo--propionic acid amide. of 2-
(DBNPA) biological pollution is cleaned.After cleaning, this device membrane flux under 0.5MPa is by the 13.9L/m before cleaning2H improves
To 28.3L/m2H, membrane flux returns to the 89.4% of initial stage.Obviously, chemical cleaning method also exists following drawback: need to stop
Clean；It is both needed to add abluent every time；After cleaning, waste liquid produces secondary pollution.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of and improve the plating of nickel zinc
The short-cut method of poaching wastewater online resource embrane method closed-system efficiency.
The purpose of the present invention can be achieved through the following technical solutions: a kind of nickel zinc electroplate rinsing wastewater that improves provides online
The short-cut method of source embrane method closed-system efficiency, it is characterised in that the method is online at described nickel zinc electroplate rinsing wastewater
Resource embrane method closed-system adds phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary that mass ratio is 1:10～10:1
Complex reagent, by nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type polyamide light in suppression nickel zinc electroplate liquid
The complicated materialization polymerization process of bright dose of 5 kinds of compositions, especially abolishes the central role of boric acid, stops inorganic organic combined pollution
Formed, the membrane flux that long-time maintenance is higher, improve the performance of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system,
Reduce economic operation cost.The addition of phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent is for making it in system
The total concentration of the dense side of middle film is 1.0～100ppm.
Described nickel zinc electroplate rinsing wastewater online resource embrane method closed-system includes plating piece groove, and is depended on by pipeline
The rinse bath of secondary connection, regulating reservoir, low-lift pump, cartridge filter, high-pressure pump, reverse osmosis membrane apparatus, nano filter membrance device and falling liquid film
Formula vaporizer, downward film evaporator is additionally provided with concentrated solution outlet and condensation-water drain, and wherein, concentrated solution outlet is also connected with plating piece
Groove, condensation-water drain is also connected with rinse bath, forms embrane method closed-system.
Described rinse bath is provided with at least one-level.
The clear water side of described reverse osmosis membrane apparatus connects rinse bath, and dense water side connects nano filter membrance device, phosphino-in system
The addition of polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent is to make complex reagent at the dense water of reverse osmosis membrane apparatus
The total concentration of side is 1.0～100ppm.
The clear water side of described nano filter membrance device connects the influent side of reverse osmosis unit, and dense water side connects falling film type evaporation
Device.
Described phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent can be in described nickel zinc plating drifts
Wash arbitrary place in waste water online resource embrane method closed-system to add.
Described phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are crystal habit or solution shape
State.
Compared with prior art, the invention have the advantages that
1. additive phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent can suppress in nickel zinc electroplate liquid
The complicated materialization of nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type 5 kinds of compositions of polyamide brightener was polymerized
Journey, especially abolishes the central role of boric acid, effectively stops inorganic organic combined pollution to be formed, thus maintains higher for a long time
Membrane flux, be substantially improved the performance of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system, reduce economical operation and become
This.
2. chemical cleaning method cleans every time and is both needed to add abluent.Inhibitor phosphino-polycarboxylic acids sodium used in the present invention and
Polyepoxy sodium succinate binary complex reagent has inertia, and electrode reaction, whole process base do not occur in system operation
This no consumption, is the most also not required to add abluent every time, has saved Financial cost；
3. chemical cleaning method needs cleaning during shutdown when flux depression is more.At nickel zinc electroplate rinsing wastewater online resource
In embrane method system, plating solution is circulation Guan Bi, and the present invention is by inertia inhibitor phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary
Complex reagent adds plating solution and carries out closed circulation, is therefore not required to stop, can be carried out continuously；
4. chemical cleaning method necessarily leads to waste liquid, and needs process and could discharge.In the present invention, inertia inhibitor phosphino-gathers
Carboxylic acid sodium and polyepoxy sodium succinate binary complex reagent are circulations, and whole process does not produce extra waste liquid, is formed without secondary
Pollute.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, nickel zinc electroplate rinsing wastewater online resource embrane method closed-system includes plating piece groove 1, and pass through
Rinse bath that pipeline is sequentially connected with, regulating reservoir 5, low-lift pump 6, cartridge filter 7, high-pressure pump 8, reverse osmosis membrane apparatus 9, NF membrane
Device 10 and downward film evaporator 11, downward film evaporator 11 is additionally provided with concentrated solution outlet and condensation-water drain, wherein, concentrates
Liquid outlet is also connected with plating piece groove 1, and condensation-water drain is also connected with rinse bath, and rinse bath is provided with three grades, as described in Figure: one-level in parallel
2, two grades of rinse baths 3 of rinse bath and three grades of rinse baths 4.
The clear water side of described reverse osmosis membrane apparatus 9 connects rinse bath, reclaims the clear water after reverse osmosis membrane apparatus 9 filters,
Dense water side connects nano filter membrance device 10, filters further, phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary in system
The addition of complex reagent is that to make it be 1.0～100ppm in the dense water side total concentration of reverse osmosis membrane apparatus 9.
The clear water side of described nano filter membrance device 10 connects the influent side of reverse osmosis membrane apparatus 9, reclaims clear water, and dense water side is even
Connect downward film evaporator 11.
Whole system forms embrane method closed-system.
Plating piece moves towards a by plating piece and electroplates in electroplating bath 1, and the rinsing of electroplating wastewater cleaned groove three stage countercurrent is the denseest
Contracting, comes together in regulating reservoir 5, under low-lift pump 3 acts on, removes more than 5 μm solid particulate matters through cartridge filter 4, protects follow-up
The safe operation of membrane filter.Being pressurized to 1.0Mpa through high-pressure pump 8, plating piece poaching wastewater enters preposition reverse osmosis membrane assembly 6, reverse osmosis
Water outlet c in clear water side can be fully achieved the requirement of plating piece rinsing water quality thoroughly, with the additional clean water b in three grades of rinse baths after recovery
Mixing；Plating piece poaching wastewater concentration obtains reverse osmosis concentrated water side water outlet d, and is delivered in rearmounted nanofiltration membrane component 10 carry further
Dense.Nanofiltration membrane component clear water side water outlet e, it is impossible to reach the requirement of plating piece rinsing water quality, enter preposition reverse osmosis membrane as water inlet
Assembly 9 purifies further.Nanofiltration membrane component dense water side water outlet f is in downward film evaporator 11 after further concentration, and gained concentrates
Liquid g enters plating piece groove 1, and condensed water h is as washings reuse.
Embodiment 1
In nickel zinc electroplate rinsing wastewater online resource embrane method closed-system at regulating reservoir add phosphino-polycarboxylic acids sodium and
Polyepoxy sodium succinate binary complex reagent crystal, mass ratio is 1:10, and after interpolation, the total concentration of the dense side of film is in systems
1.0ppm, by nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type polyamide light in suppression nickel zinc electroplate liquid
The complicated materialization polymerization process of 5 kinds of compositions of agent, especially abolishes the central role of boric acid, stops inorganic organic combined pollution shape
Become, the membrane flux that long-time maintenance is higher, improve the performance of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system, fall
Low economic operation cost.
The present embodiment implementation result:
1. additive phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent can suppress in nickel zinc electroplate liquid
The complicated materialization of nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type 5 kinds of compositions of polyamide brightener was polymerized
Journey, especially abolishes the central role of boric acid, effectively stops inorganic organic combined pollution to be formed.Compared with chemical cleaning method,
Maintain the operation time lengthening 3 times of more than 80% membrane flux, be substantially improved nickel zinc electroplate rinsing wastewater online resource embrane method and close
The performance of assembly system, reduces economic operation cost.
Inhibitor phosphino-polycarboxylic acids sodium the most used in the present invention and polyepoxy sodium succinate binary complex reagent have lazy
Property, system operation does not occur electrode reaction, the basic no consumption of whole process, is not required to add cleaning every time the most yet
Agent.Compared with chemical cleaning method, save economic operation cost 40%；
3. inertia inhibitor phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are added plating solution by the present invention
Carry out closed circulation, compared with chemical cleaning method, be not required to stop, can be carried out continuously；
4. in the present invention, inertia inhibitor phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are circulations,
Whole process does not produce extra waste liquid, is formed without secondary pollution.Compared with chemical cleaning method, save the handling cleaning waste liquid
With, account for the 30% of operating cost.
Embodiment 2
In nickel zinc electroplate rinsing wastewater online resource embrane method closed-system at electroplating bath add phosphino-polycarboxylic acids sodium and
Polyepoxy sodium succinate binary complex reagent solution, mass ratio is 5:5, and after interpolation, the total concentration of the dense side of film is in systems
50.0ppm, by nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type polyamide light in suppression nickel zinc electroplate liquid
The complicated materialization polymerization process of 5 kinds of compositions of agent, especially abolishes the central role of boric acid, stops inorganic organic combined pollution shape
Become, the membrane flux that long-time maintenance is higher, improve the performance of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system, fall
Low economic operation cost.
The present embodiment implementation result:
1. additive phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent can suppress in nickel zinc electroplate liquid
The complicated materialization of nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type 5 kinds of compositions of polyamide brightener was polymerized
Journey, especially abolishes the central role of boric acid, effectively stops inorganic organic combined pollution to be formed.Compared with chemical cleaning method,
Maintain the operation time lengthening 6 times of more than 80% membrane flux, be substantially improved nickel zinc electroplate rinsing wastewater online resource embrane method and close
The performance of assembly system, reduces economic operation cost.
Inhibitor phosphino-polycarboxylic acids sodium the most used in the present invention and polyepoxy sodium succinate binary complex reagent have lazy
Property, system operation does not occur electrode reaction, the basic no consumption of whole process, is not required to add cleaning every time the most yet
Agent.Compared with chemical cleaning method, save economic operation cost 50%；
3. inertia inhibitor phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are added plating solution by the present invention
Carry out closed circulation, compared with chemical cleaning method, be not required to stop, can be carried out continuously；
4. in the present invention, inertia inhibitor phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are circulations,
Whole process does not produce extra waste liquid, is formed without secondary pollution.Compared with chemical cleaning method, save the handling cleaning waste liquid
With, account for the 30% of operating cost.
Embodiment 3
In nickel zinc electroplate rinsing wastewater online resource embrane method closed-system at regulating reservoir add phosphino-polycarboxylic acids sodium and
Polyepoxy sodium succinate binary complex reagent solution, mass ratio is 10:1, and after interpolation, the total concentration of the dense side of film is in systems
100.0ppm, by nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type polyamide light in suppression nickel zinc electroplate liquid
The complicated materialization polymerization process of bright dose of 5 kinds of compositions, especially abolishes the central role of boric acid, stops inorganic organic combined pollution
Formed, the membrane flux that long-time maintenance is higher, improve the performance of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system,
Reduce economic operation cost.
The present embodiment implementation result:
1. additive phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent can suppress in nickel zinc electroplate liquid
The complicated materialization of nickel sulfate, zinc chloride, boric acid, sodium lauryl sulphate and AB type 5 kinds of compositions of polyamide brightener was polymerized
Journey, especially abolishes the central role of boric acid, effectively stops inorganic organic combined pollution to be formed.Compared with chemical cleaning method,
Maintain the operation time lengthening 12 times of more than 80% membrane flux, be substantially improved nickel zinc electroplate rinsing wastewater online resource embrane method and close
The performance of assembly system, reduces economic operation cost.
Inhibitor phosphino-polycarboxylic acids sodium the most used in the present invention and polyepoxy sodium succinate binary complex reagent have lazy
Property, system operation does not occur electrode reaction, the basic no consumption of whole process, is not required to add cleaning every time the most yet
Agent.Compared with chemical cleaning method, save economic operation cost 60%；
3. inertia inhibitor phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are added plating solution by the present invention
Carry out closed circulation, compared with chemical cleaning method, be not required to stop, can be carried out continuously；
4. in the present invention, inertia inhibitor phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are circulations,
Whole process does not produce extra waste liquid, is formed without secondary pollution.Compared with chemical cleaning method, save the handling cleaning waste liquid
With, account for the 30% of operating cost.
Claims (7)
1. improving a short-cut method for nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency, its feature exists
In, the method be add in described nickel zinc electroplate rinsing wastewater online resource embrane method closed-system mass ratio be 1:10～
The phosphino-polycarboxylic acids sodium of 10:1 and polyepoxy sodium succinate binary complex reagent, addition is make its dense side of film in systems total
Concentration is 1.0～100ppm.
A kind of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency of improving the most according to claim 1
Short-cut method, it is characterised in that described nickel zinc electroplate rinsing wastewater online resource embrane method closed-system includes plating piece groove
(1) rinse bath that, and by pipeline is sequentially connected with, regulating reservoir (5), low-lift pump (6), cartridge filter (7), high-pressure pump (8),
Reverse osmosis membrane apparatus (9), nano filter membrance device (10) and downward film evaporator (11), downward film evaporator is additionally provided with concentration on (11)
Liquid outlet and condensation-water drain, wherein, concentrated solution outlet is also connected with plating piece groove (1), and condensation-water drain is also connected with rinse bath, is formed
Embrane method closed-system.
A kind of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency of improving the most according to claim 2
Short-cut method, it is characterised in that described rinse bath is provided with at least one-level.
A kind of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency of improving the most according to claim 2
Short-cut method, it is characterised in that the clear water side of described reverse osmosis membrane apparatus (9) connects rinse bath, dense water side connects NF membrane
Device (10), in system, the addition of phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent is for making it in reverse osmosis
The dense water side concentration of film device (9) is 1.0～100ppm.
A kind of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency of improving the most according to claim 2
Short-cut method, it is characterised in that the clear water side of described nano filter membrance device (10) connects the influent side of reverse osmosis membrane apparatus (9),
Dense water side connects downward film evaporator (11).
A kind of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency of improving the most according to claim 1
Short-cut method, it is characterised in that described phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent can be described
Nickel zinc electroplate rinsing wastewater online resource embrane method closed-system in arbitrary place add.
A kind of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency of improving the most according to claim 1
Short-cut method, it is characterised in that described phosphino-polycarboxylic acids sodium and polyepoxy sodium succinate binary complex reagent are crystal habits
Or solution state.
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| CN201610792196.1A CN106215708A (en) | 2016-08-31 | 2016-08-31 | Improve the short-cut method of nickel zinc electroplate rinsing wastewater online resource embrane method closed-system efficiency |
| PCT/CN2016/101463 WO2018040223A1 (en) | 2016-08-31 | 2016-10-08 | Simple and convenient method for improving efficiency of closed nickel-zinc electrolytic-plating rinse-water online recycling membrane system |
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| CN102642972B (en) * | 2012-05-04 | 2013-08-28 | 无锡方舟环保有限公司 | Zero-discharging treatment method of high concentration electroplating wastewater |
| CN105417739B (en) * | 2015-11-02 | 2018-02-13 | 高同柱 | A kind of industrial wastewater all reclaims zero blowdown water quality stabilizer and its manufacture method |
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| CN101830592A (en) * | 2010-05-11 | 2010-09-15 | 吴志文 | Nickel-containing washing waste water recycling treatment system |
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Application publication date: 20161214 |