CN102874981A - Zero emission online circulation treatment system for electroplated nickel containing waste water - Google Patents
Zero emission online circulation treatment system for electroplated nickel containing waste water Download PDFInfo
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- CN102874981A CN102874981A CN2012103687971A CN201210368797A CN102874981A CN 102874981 A CN102874981 A CN 102874981A CN 2012103687971 A CN2012103687971 A CN 2012103687971A CN 201210368797 A CN201210368797 A CN 201210368797A CN 102874981 A CN102874981 A CN 102874981A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a zero emission online circulation treatment system for electroplated nickel containing waste water. The system comprises an early-stage pretreatment system, a filter permeation system and an evaporation concentration system, the early-stage pretreatment system comprises a raw water pool(1), a boosting pump(2), a membrane bioreactor (MBR) membrane treatment device (3), a bag-type filter (4), an oil removing filter(5) and a cartridge filter (6), the filter permeation system comprises an ultrafiltration device (7), a first high pressure pump (8), a first-stage inverse permeation unit (9), a first-stage middle water tank (10), a second high pressure pump (11), a second-stage inverse permeation unit (12) and a high concentration nickel water collection tank (13), and the evaporation concentration system comprises a solar water heater (14), an electric heater (15), a hot water storage tank (16), a circulation pump (17), a trapezoidal multi-effect evaporation tower (18) and an ultrahigh concentration nickel water collection tank (19). The zero emission online circulation treatment system for the electroplated nickel containing waste water has the advantages that the nature of complete set of equipment is good, the automation degree is high, the recovery rate for nickel can reach to 99.98%, the water reuse rate can reach to 100%, the secondary pollution is prevented, the zero emission of the electroplated nickel containing waste water can be thoroughly achieved, and the system has an important significance for sustainable development of the electroplating industry.
Description
Technical field
The present invention relates to a kind of wastewater treatment equipment, be specifically related to the online circulating treating system of a kind of Ni-containing Plating Wastewater zero release, belong to the technology for treating industrial waste water field.
Background technology
Electroplating industry is the important processing industry of China, and it can carry out special processing to various metals and nonmetal basal body material surface by electrochemical techniques, plays important decoration, protection even functional effect.But the rinse water in the electroplating process contains a large amount of heavy metal ion, if do not process, and can be to the neighbourhood noise severe contamination.Containing useless nickel water in the Electroplating Production mainly turns over from coating bath and washes cylinder angle decoating liquid, chemical liquids, waste plating solution etc., after nickel plating bath length duration of service, iron, copper, zinc plasma can accumulate, and some organic additive also can destroy and lose in addition, thereby cause the various quality problems of coating.Because nickel resources is relatively valuable, most of Electroplate Factories are cleansing and recycling as far as possible all.
At present also carrying out adopting electrolytic process to process Treating Electroplate Wastewater Containing Nickel such as the method (patent No. 200910154766.4) that: a kind of electrolytic process is processed Treating Electroplate Wastewater Containing Nickel and reclaimed nickel about the research of the online circular treatment technology of nickel-containing waste water always, although the method adopts the direct current anode and cathode to carry out the electrolytic recovery part of nickel, but electroplating wastewater can only carry out qualified discharge, reclaims the method for nickel and is not suitable for the electroplating enterprise that reduction of discharging is not even arranged.A kind of method (patent No. 201010131688.9) the method for directly extracting nickel in acidic chemical nickel plating waste solution adds catalyst reduction agent and nickel METAL EXTRACTION carrier in acidic chemical nickel plating waste solution, nickel ion is deposited on the carrier, the acidic chemical nickel raffinate that directly extracts behind the nickel is processed through the RO membrane reverse osmosis and the thermal evaporation processing.Although the method can realize that the extraction of nickel is concentrated, the method can not realize recycling online of nickel-containing waste water, and the chemical ingredients that the interpolation of each catalyzer has also increased waste water loses more than gain on the contrary.Therefore necessary on the basis of prior art, a kind of complete sets of equipment of design research and development is good, level of automation is high, and is workable, to environment protection and the significant online circulating treating system of Ni-containing Plating Wastewater zero release of resource reutilization.
Summary of the invention
Goal of the invention: the objective of the invention is the deficiency for prior art electroplating waste-water reutilizing system, a kind of reasonable in design of research and development design has wide range of applications, and complete sets of equipment is good, level of automation is high, workable, can replace existing electrolytic process, electroosmose process, electrolytic process, RO embrane method or catalysis method, realized the online reuse of electronickelling waste water, zero release, the device that closed cycle is processed.
Technical scheme: in order to realize above purpose, the technical scheme that the present invention takes is as follows:
The online circulating treating system of a kind of Ni-containing Plating Wastewater zero release, it comprises: early stage pretreatment system, filtration and infiltration system and evaporation and concentrating system;
Described early stage, pretreatment system comprised former pond, topping-up pump, MBR membrane treatment appts, deep bed filter, oil removal filter, security personnel's filter, and the water outlet that the water outlet that the rising pipe that the water outlet that described former pond connects topping-up pump, topping-up pump connects water inlet pipe, the MBR membrane treatment appts of MBR membrane treatment appts connects deep bed filter, deep bed filter connects oil removal filter, oil removal filter connects cartridge filter;
Described filtration and infiltration system comprises: ultra-filtration equipment, the first high-pressure pump, first-stage reverse osmosis unit, one-level intermediate water tank, the second high-pressure pump, two-pass reverse osmosis unit and high concentration of nickel water collection tank; The rising pipe that the rising pipe of described ultra-filtration equipment connects the first high-pressure pump, the first high-pressure pump connects the rising pipe connection one-level intermediate water tank of first-stage reverse osmosis unit, first-stage reverse osmosis unit, the rising pipe of one-level intermediate water tank connects the second high-pressure pump, the rising pipe of the second high-pressure pump connects the two-pass reverse osmosis unit, and the rising pipe of two-pass reverse osmosis unit connects the high concentration of nickel water collection tank;
The above evaporation and concentrating system comprises solar water heater, be installed in the electric heater in the solar water heater, the hot water water storage box that links to each other with solar water heater, the recycle pump that links to each other with the hot water water storage box, the ring ladder multiple-effect evaporation tower that links to each other with recycle pump and the ultrahigh concentration nickel water collection tank that links to each other with the terraced multiple-effect evaporation tower of ring thereof; Above-described solar water heater adopts vacuum pipe solar water heater, encircling terraced multiple-effect evaporation tower principle is that evaporator evaporation steam is out introduced next vaporizer, utilize the water in its hot heating fumigators of emitting that condenses, after encircling terraced multiple-effect evaporation tower multiple-effect evaporation, obtain ultrahigh concentration nickel water, be collected in described ultrahigh concentration nickel water collection tank, this moment, the nickel ion mass concentration reached 25 ~ 35g/L, can return plating tank and recycle.
Above-described cartridge filter links to each other with ultra-filtration equipment, and described high concentration of nickel water collection tank links to each other with the terraced multiple-effect evaporation tower of ring.
As preferred version, the online circulating treating system of above-described Ni-containing Plating Wastewater zero release also is connected with force (forcing) pump and carbon fiber filter in turn between described oil removal filter and the security personnel's filter.Carbon fiber filter has surmounted common activated charcoal filter, it is a kind of new and effective sorbing material, adsorptive power is equivalent to 400 times of gac, adsorbate to high density, lower concentration has very strong adsorptive power, also has: the advantages such as desorption rate is fast, steam rapid regeneration, long service life.
As preferred version, the online circulating treating system of above-described Ni-containing Plating Wastewater zero release, described the second high-pressure pump also is connected with the on-line cleaning device.
As preferred version, the online circulating treating system of above-described Ni-containing Plating Wastewater zero release, described two-pass reverse osmosis unit also is connected with through the liquid collecting tank, and is transported to the use of electroplating technology line through the pure water of liquid collecting tank.
As preferred version, the online circulating treating system of above-described Ni-containing Plating Wastewater zero release, the reverse osmosis isolation temperature range of described first-stage reverse osmosis unit is 15～60 ℃, the pressure range of the first high-pressure pump is 1.5～3.5Mpa; The pressure range of the second high-pressure pump is 2.5～3.5 Mpa, and the reverse osmosis temperature range of two-pass reverse osmosis unit is 20～55 ℃.The liquid that sees through of two-pass reverse osmosis unit gained enters through the liquid collecting tank, and the water telegram in reply depositing process line that sees through the liquid collecting tank uses, and reverse osmosis membrane adopts the pollution resistant composite film of producer's customization, and the dense water that two-pass reverse osmosis produces enters the high concentration of nickel water collection tank.
The wastewater treatment capacity of described first-stage reverse osmosis unit can reach 0.5-10m
3/ h, the concentration of nickel-containing wastewater ion is 320～350 mg/L, pH5～7 also have a small amount of organism such as brightening agent.Design and operation pressure 2MPa, membrane module flux 800L/h.This first-stage reverse osmosis unit adopts 8 inches polymeric amide pollution-resistant membrane elements, and the effective film area of single element is 32m, ratio of desalinization 〉=99%.Through the processing of this first-stage reverse osmosis unit, 80% moisture is separated in the waste water, produces water TDS≤10mg/l, and direct reuse is made rinsing water to the electroplating technology line.And the metal ion tunicle of the overwhelming majority is trapped in the concentrated solution, enters the two-pass reverse osmosis unit, and cycles of concentration reaches 5.The concentrated solution of first-stage reverse osmosis unit carries out degree of depth reuse as the water inlet of two-pass reverse osmosis unit, and purpose is to make that the nickel ion mass concentration reaches 100-150g/L in the degree of depth concentrated solution.Two-pass reverse osmosis unit concentrated solution treatment capacity is 0.2-4 m
3/ h, the concentration of nickel-containing wastewater ion is about 600 to 1800mg/L, and pH 5～7.Design and operation pressure 2.5MPa, flux 200L/h.The separatory membrane that this two-pass reverse osmosis unit adopts, salt rate 〉=99.7%.Through the processing of this two-pass reverse osmosis unit, secondary concentrated solution reconcentration more than 400 times, two-pass reverse osmosis produces water and enters into through the liquid collecting tank, is back to use the first-stage reverse osmosis system again, forms the optimum water recycling system that cleans production.Whole film is processed the total concentration rate of unit can reach 2000 times.Concentrated solution is directly got back to plating tank and is used through one times of evaporation and concentrating system reconcentration after the processing.
As preferred version, the online circulating treating system of above-described Ni-containing Plating Wastewater zero release, the operating pressure of described cartridge filter is 0.28 ~ 0.32MPa, and the PP filter core of 4 μ m is installed in the cartridge filter.
Beneficial effect: the online circulating treating system of Ni-containing Plating Wastewater zero release provided by the invention is compared with existing technology and has the following advantages:
1, this system adopts multistage pre-treatment+filtration and infiltration+evaporation and concentrating device, specific aim is selected to separate and is used the membrane element type, increase systemic circulation and partial circulating technique, the total concentration rate of membrane separation unit can reach 2000 times, but Effective Raise cycles of concentration, improve dialysis water reuse quality, can realize the online circular treatment of Ni-containing Plating Wastewater zero release.
2, this system adopts the MBR film to use, and the organism of chemical treatment partial is well degraded, and alleviates the operating pressure of system, improves the work-ing life of film.
3, in course of normal operation, the intrasystem face of filtration and infiltration can be subject to the pollution of inorganic salt crust, microorganism, colloidal solid and insoluble organic substance, thereby cause that membrane flux descends, thereby cause equipment cost to rise, degradation series of problems under the quality product, the present invention adopts automatic cleaning integrated technique control potential of hydrogen, and membrane flux can be kept in 2 ~ 3 years and reach about 98% of design load; And be connected with the on-line cleaning device, can guarantee that the work-ing life of film is more than 3 years.
4, the present invention breaks through many drawbacks that the evaporation of water condensed water exists in the conventional process technology, and annular multiple-effect evaporation technology is applied to realize on the method technical innovation in the online circulating technology of nickel-containing waste water zero release.
5, electroplating wastewater advanced treatment and reclamation device provided by the invention, complete sets of equipment is good, level of automation is high, workable, experimental result shows, can reach 99.98% to nickel recovery, reusing rate can reach 100%, non-secondary pollution can be realized the zero release of nickel-plating waste water more up hill and dale, has higher promotional value, and have good economic benefit, social benefit and environmental benefit, significant to the Sustainable development of electroplating industry.
Description of drawings
Fig. 1 is the structural representation of the online circulating treating system of Ni-containing Plating Wastewater zero release provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, the online circulating treating system of a kind of Ni-containing Plating Wastewater zero release, it comprises: early stage pretreatment system, filtration and infiltration system and evaporation and concentrating system;
Described early stage, pretreatment system comprised former pond (1), topping-up pump (2), MBR membrane treatment appts (3), deep bed filter (4), oil removal filter (5), security personnel's filter (6), described former pond (1) connects topping-up pump (2), the water outlet of topping-up pump (2) connects the water inlet pipe of MBR membrane treatment appts (3), the rising pipe of MBR membrane treatment appts (3) connects deep bed filter (4), the water outlet of deep bed filter (4) connects oil removal filter (5), the water outlet of oil removal filter (5) connects cartridge filter (6);
Described filtration and infiltration system comprises: ultra-filtration equipment (7), the first high-pressure pump (8), first-stage reverse osmosis unit (9), one-level intermediate water tank (10), the second high-pressure pump (11), two-pass reverse osmosis unit (12) and high concentration of nickel water collection tank (13); The rising pipe that the rising pipe of described ultra-filtration equipment (7) connects the first high-pressure pump (8), the first high-pressure pump (8) connects the rising pipe connection one-level intermediate water tank (10) of first-stage reverse osmosis unit (9), first-stage reverse osmosis unit (9), the rising pipe of one-level intermediate water tank (10) connects the second high-pressure pump (11), the rising pipe of the second high-pressure pump (11) connects two-pass reverse osmosis unit (12), and the rising pipe of two-pass reverse osmosis unit (12) connects high concentration of nickel water collection tank (13);
Described evaporation and concentrating system comprises solar water heater (14), be installed in the electric heater (15) in the solar water heater (14), the hot water water storage box (16) that links to each other with solar water heater (14), the recycle pump (17) that links to each other with hot water water storage box (16), the ring ladder multiple-effect evaporation tower (18) that links to each other with recycle pump (17) and the ultrahigh concentration nickel water collection tank (19) that links to each other with the terraced multiple-effect evaporation tower of ring (18) thereof;
Described cartridge filter (6) links to each other with ultra-filtration equipment (7), and described high concentration of nickel water collection tank (13) links to each other with the terraced multiple-effect evaporation tower of ring (18).Also be connected with force (forcing) pump (20) and carbon fiber filter (21) in turn between described oil removal filter (5) and the security personnel's filters (6).
The online circulating treating system of above-described Ni-containing Plating Wastewater zero release, described the second high-pressure pump (11) also is connected with on-line cleaning device (22).
The online circulating treating system of above-described Ni-containing Plating Wastewater zero release, described two-pass reverse osmosis unit (12) also is connected with through liquid collecting tank (23), and is transported to electroplating technology line (24) use through the pure water of liquid collecting tank (23).
The online circulating treating system of above-described Ni-containing Plating Wastewater zero release, the reverse osmosis isolation temperature range of described first-stage reverse osmosis unit (9) is 15～60 ℃, the pressure range of the first high-pressure pump (8) is 1.5～3.5Mpa; The pressure range of the second high-pressure pump (11) is 2.5～3.5 Mpa, and the reverse osmosis temperature range of two-pass reverse osmosis unit (12) is 20～55 ℃.
The online circulating treating system of above-described Ni-containing Plating Wastewater zero release, the operating pressure of described cartridge filter (6) is 0.28 ~ 0.32MPa, and the PP filter core of 4 μ m is installed in the cartridge filter (6).
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. online circulating treating system of Ni-containing Plating Wastewater zero release is characterized in that it comprises: early stage pretreatment system, filtration and infiltration system and evaporation and concentrating system;
Described early stage, pretreatment system comprised former pond (1), topping-up pump (2), MBR membrane treatment appts (3), deep bed filter (4), oil removal filter (5), security personnel's filter (6), described former pond (1) connects topping-up pump (2), the water outlet of topping-up pump (2) connects the water inlet pipe of MBR membrane treatment appts (3), the rising pipe of MBR membrane treatment appts (3) connects deep bed filter (4), the water outlet of deep bed filter (4) connects oil removal filter (5), the water outlet of oil removal filter (5) connects cartridge filter (6);
Described filtration and infiltration system comprises: ultra-filtration equipment (7), the first high-pressure pump (8), first-stage reverse osmosis unit (9), one-level intermediate water tank (10), the second high-pressure pump (11), two-pass reverse osmosis unit (12) and high concentration of nickel water collection tank (13); The rising pipe that the rising pipe of described ultra-filtration equipment (7) connects the first high-pressure pump (8), the first high-pressure pump (8) connects the rising pipe connection one-level intermediate water tank (10) of first-stage reverse osmosis unit (9), first-stage reverse osmosis unit (9), the rising pipe of one-level intermediate water tank (10) connects the second high-pressure pump (11), the rising pipe of the second high-pressure pump (11) connects two-pass reverse osmosis unit (12), and the rising pipe of two-pass reverse osmosis unit (12) connects high concentration of nickel water collection tank (13);
Described evaporation and concentrating system comprises solar water heater (14), be installed in the electric heater (15) in the solar water heater (14), the hot water water storage box (16) that links to each other with solar water heater (14), the recycle pump (17) that links to each other with hot water water storage box (16), the ring ladder multiple-effect evaporation tower (18) that links to each other with recycle pump (17) and the ultrahigh concentration nickel water collection tank (19) that links to each other with the terraced multiple-effect evaporation tower of ring (18) thereof;
Described cartridge filter (6) links to each other with ultra-filtration equipment (7), and described high concentration of nickel water collection tank (13) links to each other with the terraced multiple-effect evaporation tower of ring (18).
2. the online circulating treating system of Ni-containing Plating Wastewater zero release according to claim 1, it is characterized in that, also be connected with force (forcing) pump (20) and carbon fiber filter (21) in turn between described oil removal filter (5) and the security personnel's filters (6).
3. the online circulating treating system of Ni-containing Plating Wastewater zero release according to claim 1 is characterized in that, described the second high-pressure pump (11) also is connected with on-line cleaning device (22).
4. the online circulating treating system of Ni-containing Plating Wastewater zero release according to claim 1, it is characterized in that, described two-pass reverse osmosis unit (12) also is connected with through liquid collecting tank (23), and is transported to electroplating technology line (24) use through the pure water of liquid collecting tank (23).
5. according to claim 1 to the online circulating treating system of 4 each described Ni-containing Plating Wastewater zero releases, it is characterized in that, the reverse osmosis isolation temperature range of described first-stage reverse osmosis unit (9) is 15～60 ℃, and the pressure range of the first high-pressure pump (8) is 1.5～3.5Mpa; The pressure range of the second high-pressure pump (11) is 2.5～3.5 Mpa, and the reverse osmosis temperature range of two-pass reverse osmosis unit (12) is 20～55 ℃.
6. the online circulating treating system of Ni-containing Plating Wastewater zero release according to claim 5 is characterized in that, the operating pressure of described cartridge filter (6) is 0.28 ~ 0.32MPa, and the PP filter core of 4 μ m is installed in the cartridge filter (6).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104499037A (en) * | 2014-12-05 | 2015-04-08 | 李松 | Energy-saving and environmental-friendly electroplating chemical filtering and heating equipment |
| CN105800848A (en) * | 2015-01-21 | 2016-07-27 | 天津海鑫鸿达科技有限公司 | Comprehensive utilization method for chemical nickel-plating concentrated liquid wastewater |
| WO2017197803A1 (en) * | 2016-05-18 | 2017-11-23 | 上海交通大学 | Method for in-line resource reclamation of plating rinsing wastewater |
| CN109293034A (en) * | 2018-11-29 | 2019-02-01 | 珠海杰赛科技有限公司 | A kind of processing system and processing method of nickel-containing waste water |
| CN111333212A (en) * | 2020-02-09 | 2020-06-26 | 太仓市金鹿电镀有限公司 | Method for treating nickel in nickel-containing wastewater |
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