CN104529020B - A kind of automobile decoration piece electroplating waste water treatment system - Google Patents
A kind of automobile decoration piece electroplating waste water treatment system Download PDFInfo
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- CN104529020B CN104529020B CN201410846154.2A CN201410846154A CN104529020B CN 104529020 B CN104529020 B CN 104529020B CN 201410846154 A CN201410846154 A CN 201410846154A CN 104529020 B CN104529020 B CN 104529020B
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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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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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Abstract
The present invention relates to Waste Water Treatment, particularly relate to a kind of automobile decoration piece electroplating waste water treatment system. Topping-up pump, more medium filter, the first accurate filter and ultra-filtration equipment it is connected with in turn after its waste water collecting tank; First accurate filter outlet is connected with ultra-filtration equipment, and ultra-filtration equipment is connected with the first internal circulation system after producing the mouth of a river; First internal circulation system comprises the ultrafiltration forming loop and produces water tank, high-pressure pump, one-level RO concentrating unit, deep desalting high-pressure pump and deep desalting RO device, deep desalting RO device outlet is connected to ultrafiltration and produces water tank formation loop, and deep desalting RO device is connected to pure water retrieving arrangement for reclaiming pure water after the first internal circulation system internal recycle completes; The dense water out of one-level RO concentrating unit is connected with the 2nd internal circulation system; 2nd internal circulation system comprises the concentrated water tank, secondary concentration high-pressure pump, high-efficient electrolysis device and the two grades of RO concentrating uniies that form loop. The present invention can realize metal ion recycle and waste water recycling in waste water.
Description
Technical field
The present invention relates to Waste Water Treatment, particularly relate to a kind of automobile decoration piece electroplating waste water treatment system.
Background technology
Since " 12 " plan, the research of the reduction of discharging gordian technique relevant to plating is more and more deep, one of waste gas, waste water, the changing waste into resources recovery and utilization technology research emphasis becoming relevant field researchist in above-mentioned industry technological process. The general all more complicated of the factory effluent composition of these industries, pollutant kind are various, usually have CODcr height, BOD5Height, SS concentration height, NH3The features such as-N concentration height, colourity height, metal ion recovery rate are low are one of the most difficult trade effluents.
Traditional materialization+the biochemical processing process of general employing processes, can only removing the materials such as SS, the COD in waste water, other pollutant removals are not good, at more than 200mg/L as ammonia nitrogen concentration, cannot reaching sewage drainage standard, metal ion recovering effect is desirable not to the utmost; And the development along with membrane separation technique, taking ultrafiltration+reverse osmosis as the membrane separation technique of core can realize the removal to pollutent every in trade effluent, but in order to ensure the work-ing life of film effluent quality and film, the water water quality that enters of film strictly must be controlled, operation easier increases, process effect is restricted, and cost also improves greatly.
CN102786171B(2013-11-27) comprehensive processing technique and the equipment thereof of a kind of electroplating wastewater containing heavy metal ion is disclosed, but metal ion recycle in waste water and waste water recycling effect are still had much room for improvement by this equipment.
Summary of the invention
It is an object of the invention to provide and a kind of can realize metal ion high resource in waste water and recycle, reduce the load of the heavy metal of waste water station thus make that a class heavy metal contaminants is better than electroplating the special emission request of pollutent, reuse pure water water quality is better thus makes specific conductivity lower than the automobile decoration piece electroplating waste water treatment system of 10us/cm.
The above-mentioned technical purpose of the present invention is achieved by the following technical programs:
A kind of automobile decoration piece electroplating waste water treatment system, comprises the waste water collecting tank for collecting the electroplating wastewater that each road is collected separately, is connected with topping-up pump, more medium filter, the first accurate filter and ultra-filtration equipment after waste water collecting tank described in it in turn;
Described ultra-filtration equipment often runs and carries out an automatic back-washing half an hour; Rinsing flux controls at 100-120L/m hr; Backwash pressure��0.2MPa; 20-40 second backwash time;
Described ultra-filtration equipment is external pressing type hollow fibrous membrane, and in its film silk, the ratio of external diameter is 1:1.5-2.5, ultrafiltration module packing density 800-1200m2/m3;
Described first accurate filter outlet is connected with described ultra-filtration equipment, and described ultra-filtration equipment is connected with the first internal circulation system after producing the mouth of a river; Described first internal circulation system comprises the ultrafiltration forming loop and produces water tank, high-pressure pump, one-level RO concentrating unit, deep desalting high-pressure pump and deep desalting RO device, described deep desalting RO device outlet is connected to described ultrafiltration and produces water tank formation loop, and described deep desalting RO device is connected to pure water retrieving arrangement for reclaiming pure water after described first internal circulation system internal recycle completes;
The described dense water out of one-level RO concentrating unit is connected with the 2nd internal circulation system; Described 2nd internal circulation system comprises the concentrated water tank, secondary concentration high-pressure pump, high-efficient electrolysis device and the two grades of RO concentrating uniies that form loop; Described two grades of RO concentrating uniies are provided with three outlets, and an outlet is connected to described waste water collecting tank, and another outlet is connected to described high-efficient electrolysis device, and Article 3 outlet is connected to dense water sewage collecting box.
The multistage embrane method of the present invention is combined the water quality of the rate of recovery and the reuse water improving waste water with electrochemistry; The contact break effect of electrochemistry in ABS electroplating wastewater, is more conducive to water treatment effect.
Ultrafiltration utilizes to have selects the film through ability to do separating medium, film wall gathers micropore, and stoste is filtrate by the side of film, solvent and small organic molecule through film wall under a certain pressure, and relatively the organism tunicle of macromole retains, thus reach separating substances and concentrated object. Membrane separating process is dynamic filtration process, and larger molecular organics, solid substance tunicle wall intercept, and flows out membrane module with concentrated solution, and film is not easily blocked, can life-time service continuously. Filtration procedure can run under normal temperature, low pressure, without phase-state change, energy-efficient;
First internal circulation system of the present invention is by concentrated for dense water 90-200 doubly; 2nd internal circulation system is by concentrated for the condensed water of the first internal circulation system gained 50-100 doubly; By the first internal circulation system and the 2nd internal circulation system, can copper nickel chromium metal ion in efficient recovery electroplating wastewater and industrial pure water, copper nickel chromium metal ion recycle and reuse rate in electroplating wastewater reaches more than 90%, and (prior art is normally converted into precipitation of hydroxide, become solid waste water to sell at a low price), wastewater recycle rate reaches more than 85% (prior art is usually about 50-60%), and recovery pure water conductivity can be less than 10us/cm(prior art usual one-level recovery specific conductivity and be about about 50-100us/cm).
As preferably, being connected with contact break pond, one-level seizure pond, flocculation agent pond and the first gel pond after described high-efficient electrolysis device in turn.
Contact break pond, one-level seizure pond, flocculation agent pond and the first gel pond can add contact break agent, metal ion capturing agent and the flocculation agent copper chromium metal ion especially chromium metal ion for reclaiming in electroplating wastewater respectively. Contact break rate of the present invention is higher, and the complex state heavy metal in residuary water is difficult to abolish less than the heavy metal of the usual prior art complex state of 3%(), contact break is not exclusively the major cause of heavy metals exceeding standard. Discharge water copper��0.2mg/L, nickel��0.1mg/L, sexavalent chrome inspection does not measure, total chromium��0.2mg/L.
After waste water independent collecting tank in each road is collected, entering a pre-treatment through more medium filter, accurate filter, continuous cross-flow ultrafiltration device and produce water tank after carrying out pre-treatment, pre-treatment main purpose is the suspended substance in reduction water, colloid, organic component etc.; The water that water tank is produced in pre-treatment enters one-level RO concentration systems, concentrated 4 times, one-level RO condensed water enters concentrated water tank, the water of concentrated water tank enters two grades of RO concentration systems, and two grades of dense water of RO concentration systems flow back to concentrated water tank through electrolytic recovery heavy metal device, forms closed cycle, working cycle is extracted the heavy metal in dense water, fall the specific conductivity in water, added loop cycle, the organic content that there is contact break effect simultaneously and reduce in water. Although we know that closed cycle is extracted heavy metal ion, other ionic concn can raise gradually, when other ion reaches the numerical value of setting, a small amount of waste water is discharged to waste water station and regularly processes, before processing also will through one-level electrolysis contact break and extract a part heavy metal, after carry out one-level materializing strategy, two grades of materializing strategy, water outlet be better than electroplate pollutant emission standard table 3 standard.
The product water of one-level RO concentration systems enters two grades of RO purification systems, purifying further through two grades of RO, substantially can reach product water conductivity and be less than 10us/cm, this part reuse water goes to rinse plating piece better effects if, the bigger qualification rate that improve product, especially to BMW and benz high-end product.
As preferably, being connected with one-level inclined-plate clarifying basin, two grades of seizure ponds and the 2nd gel pond behind described gel pond in turn.
Catch in pond at two grades and can add different trapping agent further, for the copper nickel chromium metal ion especially chromium metal ion reclaimed in electroplating wastewater, it is to increase the rate of recovery.
As preferably, being connected with two grades of inclined-plate clarifying basins, the 2nd topping-up pump, more medium filter, activated charcoal filter and the 2nd accurate filter behind described 2nd gel pond in turn.
By the two grades of inclined-plate clarifying basins, the 2nd topping-up pump, more medium filter, activated charcoal filter and the 2nd accurate filter that arrange successively, after making electroplating wastewater processing, the supernatant liquor of gained is fully processed further, and final water outlet is discharged or reuse.
As preferably, being connected with in turn after described dense water sewage collecting box and be provided with intermediate water tank between one-level RO concentrating unit and deep desalting high-pressure pump described in the first topping-up pump and high-efficient electrolysis device.
As preferably, described contact break pond is the pH value equalizing tank of chromium system complex compound.
As preferably, described one-level catches the reduction pond that pond is chromium system complex compound.
As preferably, being connected with ionic adsorption device behind described 2nd gel pond.
As preferably, described ionic adsorption device comprises gel strong acid type Al-type ion exchange resin and the modified double resin ion-exchanger pillar of macropore weak-type Al-type ion exchange resin composition.
This modified double resin ion-exchanger can repeatedly regenerate, it may also be useful to the life-span is 3-5.
Accompanying drawing explanation
Fig. 1 is automobile decoration piece electroplating waste water treatment system schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment one
As shown in Figure 1, automobile decoration piece electroplating waste water treatment system comprises the waste water collecting tank 2 for electroplating wastewater, electroplating wastewater 1 enters waste water collecting tank 2, is connected with topping-up pump 3, more medium filter 4, first accurate filter 5 and ultra-filtration equipment 6 after waste water collecting tank 2 in turn; First accurate filter 5 outlet is connected with ultra-filtration equipment 6, and ultra-filtration equipment often runs and carries out an automatic back-washing half an hour; Rinsing flux controls at 100L/m hr; Backwash pressure��0.2MPa; 20 seconds backwash time; Ultra-filtration equipment is preferably external pressing type hollow fibrous membrane, and in its film silk, the ratio of external diameter is 1:1.5, ultrafiltration module packing density 800m2/m3;
Ultra-filtration equipment 6 is connected with the first internal circulation system after producing the mouth of a river; First internal circulation system comprises the ultrafiltration forming loop and produces water tank 7, high-pressure pump 8, one-level RO concentrating unit 9, deep desalting high-pressure pump 11 and deep desalting RO device 12, deep desalting RO device 12 outlet is connected to ultrafiltration product water tank 7 and forms loop, and deep desalting RO device 12 is connected to pure water retrieving arrangement for reclaiming pure water after the first internal circulation system internal recycle completes; The dense water out of one-level RO concentrating unit 9 is connected with the 2nd internal circulation system; 2nd internal circulation system comprises the concentrated water tank 14, secondary concentration high-pressure pump 15, high-efficient electrolysis device 17 and the two grades of RO concentrating uniies 16 that form loop; Two grades of RO concentrating uniies 16 are provided with three outlets, and an outlet is connected to waste water collecting tank 2, and another outlet is connected to high-efficient electrolysis device 17, and Article 3 outlet is connected to dense water sewage collecting box 18. The first topping-up pump 19 and high-efficient electrolysis device 20 it is connected with in turn after dense water sewage collecting box 18; Intermediate water tank 10 it is provided with between one-level RO concentrating unit 9 and deep desalting high-pressure pump 11. In order to improve the rate of recovery of chromium metal, contact break pond 21 is the pH value equalizing tank of chromium system complex compound; One-level catches the reduction pond that pond 22 is chromium system complex compound. Certainly, in order to the metal ion recovering effect improved in electroplating wastewater, ionic adsorption device (not illustrating in the drawings) behind the 2nd gel pond 27, can be connected with.
Contact break pond 21, one-level seizure pond 22, flocculation agent pond 23 and the first gel pond 24 it is connected with in turn after high-efficient electrolysis device 20. It is connected with one-level inclined-plate clarifying basin 25, two grades behind gel pond 24 in turn and catches pond 26 and the 2nd gel pond 27. Two grades of inclined-plate clarifying basins 28, the 2nd topping-up pump 29, more medium filter 30, activated charcoal filter 31 and the 2nd accurate filter 32 it is connected with in turn, through water outlet 33 qualified discharge that the 2nd accurate filter 32 processes behind 2nd gel pond 27. For improving metal ion recovery rate, the pillar of ionic adsorption device is set to gel strong acid type Al-type ion exchange resin and the modified double resin ion-exchanger pillar of macropore weak-type Al-type ion exchange resin composition.
Embodiment two
ABS electroplating wastewater 1 sub-prime is collected after entering and is entered collecting tank 2, through topping-up pump 3 enters more medium filter 4 and the first accurate filter 5 is removed in waste water particle and bigger colloid, waste water is tackled by the micropore of ultrafiltration 6 again, remove the small colloid in water and the organic component of part, the product water of ultrafiltration enters ultrafiltration and produces water tank 7, water after pre-sheet is by entering one-level RO concentrating unit 9 after primary concentration high-pressure pump 8 supercharging, the product water of one-level RO concentrating unit enters intermediate water tank 10, water now can't meet explained hereafter water, purification further is needed to remove the salt in water, again by deep desalting high-pressure pump 11 depth of drive except salt RO device 12, it is less than 10us/cm through water conductivity, can direct reuse to production line.
The condensed water of one-level RO concentrating unit 9 enters concentrated water tank 14, two grades of RO concentrating uniies 16 are entered again after the supercharging of secondary concentration high-pressure pump 15, waste water collecting tank 2 is returned to through water, condensed water returns to concentrated water tank 14 after high-efficient electrolysis device 17 reclaims heavy metal, circulation and stress water and heavy metal have fine contact break effect (material of pole plate is very crucial) simultaneously always, when the specific conductivity in recirculated water reaches set(ting)value, a regularly discharge part is to thickened waste water collection tank 18, it is pressurized to high-efficient electrolysis device 20 again by topping-up pump 19, work to be played contact break and reclaim heavy metal, reduce the load of wastewater treatment, squeezing into contact break pond 21(is acidifying reduction pond to chromium system), one-level catches pond 22, flocculation basin 23, inclined-plate clarifying basin 25 is entered behind gel pond 24, settling tank supernatant liquor enters two grades and catches pond 26, two grades of inclined-plate clarifying basins are entered behind gel pond 27, two grades of swash plate 28 supernatant liquors enter more medium filter 30 and activated charcoal filter 31 through topping-up pump 29, 2nd accurate filter 32 tackles SS etc., final outflow water qualified discharge 33.
Ultra-filtration equipment often runs and carries out an automatic back-washing half an hour; Rinsing flux controls at 120L/m hr; Backwash pressure��0.2MPa; 40 seconds backwash time; Ultra-filtration equipment is preferably external pressing type hollow fibrous membrane, and in its film silk, the ratio of external diameter is 1:2.5, ultrafiltration module packing density 1200m2/m3��
Embodiment three
With embodiment one, carry out an automatic back-washing half an hour the difference is that ultra-filtration equipment often runs; Rinsing flux controls at 110L/m hr; Backwash pressure��0.2MPa; 30 seconds backwash time; Ultra-filtration equipment is preferably external pressing type hollow fibrous membrane, and in its film silk, the ratio of external diameter is 1:2, ultrafiltration module packing density 900m2/m3��
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification sheets, but as long as being all subject to the protection of patent law in the right of the present invention.
Claims (7)
1. an automobile decoration piece electroplating waste water treatment system, comprises the waste water collecting tank (2) for collecting electroplating wastewater, it is characterised in that:
Topping-up pump (3), more medium filter (4), the first accurate filter (5) and ultra-filtration equipment (6) it is connected with in turn after described waste water collecting tank (2);
Described ultra-filtration equipment often runs and carries out an automatic back-washing half an hour; Rinsing flux controls at 100-120L/m hr; Backwash pressure��0.2MPa; 20-40 second backwash time;
Described ultra-filtration equipment is external pressing type hollow fibrous membrane, and in its film silk, the ratio of external diameter is 1:1.5-2.5, ultrafiltration module packing density 800-1200m2/m3;
The outlet of described first accurate filter (5) is connected with described ultra-filtration equipment (6), and described ultra-filtration equipment (6) is connected with the first internal circulation system after producing the mouth of a river; Described first internal circulation system comprises the ultrafiltration forming loop and produces water tank (7), high-pressure pump (8), one-level RO concentrating unit (9), deep desalting high-pressure pump (11) and deep desalting RO device (12), described deep desalting RO device (12) outlet is connected to described ultrafiltration and produces water tank (7) formation loop, and described deep desalting RO device (12) is connected to pure water retrieving arrangement for reclaiming pure water after described first internal circulation system internal recycle completes;
The dense water out of described one-level RO concentrating unit (9) is connected with the 2nd internal circulation system; Described 2nd internal circulation system comprises the concentrated water tank (14), secondary concentration high-pressure pump (15), high-efficient electrolysis device (17) and the two grades of RO concentrating uniies (16) that form loop; Described two grades of RO concentrating uniies (16) are provided with three outlets, and an outlet is connected to described waste water collecting tank (2), and another outlet is connected to described high-efficient electrolysis device (17), and Article 3 outlet is connected to dense water sewage collecting box (18); It is connected with the first topping-up pump (19) and high-efficient electrolysis device (20) in turn after described dense water sewage collecting box (18); It is provided with intermediate water tank (10) between described one-level RO concentrating unit (9) and deep desalting high-pressure pump (11).
2. automobile decoration piece electroplating waste water treatment system according to claim 1, it is characterised in that: it is connected with contact break pond (21), one-level seizure pond (22), flocculation agent pond (23) and the first gel pond (24) after described high-efficient electrolysis device (20) in turn.
3. automobile decoration piece electroplating waste water treatment system according to claim 2, it is characterised in that: it is connected with one-level inclined-plate clarifying basin (25), two grades of seizure pond (26) and the 2nd gel pond (27) after described gel pond (24) in turn.
4. automobile decoration piece electroplating waste water treatment system according to claim 3, it is characterised in that: the pH value equalizing tank that described contact break pond (21) is chromium system complex compound.
5. automobile decoration piece electroplating waste water treatment system according to claim 4, it is characterised in that: described one-level catches the reduction pond that pond (22) is chromium system complex compound.
6. automobile decoration piece electroplating waste water treatment system according to claim 4, it is characterised in that: it is connected with ionic adsorption device behind described 2nd gel pond (27).
7. automobile decoration piece electroplating waste water treatment system according to claim 6, it is characterised in that: described ionic adsorption device comprises gel strong acid type Al-type ion exchange resin and the modified double resin ion-exchanger pillar of macropore weak-type Al-type ion exchange resin composition.
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| CN106219830A (en) * | 2016-06-01 | 2016-12-14 | 东莞汇金环境科技有限公司 | A kind of electroplated heavy metals wastewater zero discharge system and method |
| CN108046500B (en) * | 2017-12-20 | 2020-08-21 | 宝钢工程技术集团有限公司 | Method and apparatus for treating waste water |
| CN108483715A (en) * | 2018-04-12 | 2018-09-04 | 常州大学 | A kind of processing method of Electroplating Wastewater, nickel |
| CN108793568A (en) * | 2018-08-29 | 2018-11-13 | 广州奥科达水处理设备有限公司 | A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment |
| CN110950455A (en) * | 2019-11-28 | 2020-04-03 | 中国第一汽车股份有限公司 | Treatment system and treatment method for water-based paint waste cleaning solvent |
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| JP5768961B2 (en) * | 2011-03-22 | 2015-08-26 | 三浦工業株式会社 | Water treatment equipment |
| CN102491572A (en) * | 2011-12-20 | 2012-06-13 | 浙江晶泉水处理设备有限公司 | Device for preparing injection water by using reverse osmosis ultrafiltration combined membrane method |
| CN103626352A (en) * | 2012-08-22 | 2014-03-12 | 北京九章环境工程股份有限公司 | Advanced treatment and recycling process and apparatus for sewage reaching standard |
| CN203683264U (en) * | 2013-11-12 | 2014-07-02 | 厦门市中智海海洋科技有限公司 | Primary reverse osmosis system of reverse osmosis boron-removal system |
| CN203728671U (en) * | 2014-03-05 | 2014-07-23 | 东莞汇金环境科技有限公司 | Emission reduction system after washing with ultrapure water in clean production |
| CN103896434B (en) * | 2014-04-08 | 2016-04-13 | 天津市津能工程管理有限公司 | Based on the power-plant makeup treatment system of full embrane method |
| CN204417261U (en) * | 2014-12-31 | 2015-06-24 | 浙江东洋环境工程有限公司 | Automobile decoration piece electroplating waste water treatment system |
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Denomination of invention: An electroplating wastewater treatment system for automobile trim Effective date of registration: 20211216 Granted publication date: 20160601 Pledgee: Nanxun Zhejiang rural commercial bank Limited by Share Ltd. and Fu sub branch Pledgor: ZHEJIANG DONGYANG ENVIRONMENTAL ENGINEERING Co.,Ltd. Registration number: Y2021330002548 |
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Denomination of invention: A Wastewater Treatment System for Electroplating of Automotive Accessories Effective date of registration: 20230601 Granted publication date: 20160601 Pledgee: Nanxun Zhejiang rural commercial bank Limited by Share Ltd. and Fu sub branch Pledgor: ZHEJIANG DONGYANG ENVIRONMENTAL ENGINEERING Co.,Ltd. Registration number: Y2023330001041 |