CN103241860A - Combined treatment device and process for acid-washing wastewater of stainless steel - Google Patents
Combined treatment device and process for acid-washing wastewater of stainless steel Download PDFInfo
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- CN103241860A CN103241860A CN2013101554931A CN201310155493A CN103241860A CN 103241860 A CN103241860 A CN 103241860A CN 2013101554931 A CN2013101554931 A CN 2013101554931A CN 201310155493 A CN201310155493 A CN 201310155493A CN 103241860 A CN103241860 A CN 103241860A
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Abstract
The invention relates to combined treatment device and process for acid-washing wastewater of stainless steel, and belongs to the technical field of environment engineering, and solves the problem of environmental pollution and resource waste. The device comprises a wastewater pond, a filter connected with the wastewater pond, a primary cation exchanger connected with the filter, a secondary cation exchanger connected with the primary cation exchanger, a safety filter connected with the secondary cation exchanger and a reverse osmosis device connected with the safety filter. The first and second cation exchangers are provided with regenerated acid liquor adding ports. The device further comprises a heavy metal gas remover connected with the first and second cation exchangers. The heavy metal gas remover is provided with a settling agent adding port. A circulating pipeline for transporting filtered water in the heavy metal gas remover to the wastewater pond is arranged between the heavy metal gas remover and the wastewater pond. Wastewater meets the standard and is discharged, and wastes are recycled, so that the resources are greatly saved.
Description
Technical field
The present invention relates to field of environment engineering technology, be specifically related to stainless steel acid cleaning waste water combined treatment device and technology.
Background technology
In stainless steel was made, in order to remove the oxide skin of annealing back steel surface, the general nitration mixture that is made into by nitric acid and hydrofluoric acid that adopts carried out surface cleaning, is called pickling.Along with the development of Iron And Steel Industry and surface treatment industry, the generation of national annual spent pickle liquor and surpass hundred ten thousand steres, its pollution hazard is clearly.The main harm of acid-bearing wastewater is hydraulic structures such as corrosion sewer line and Steel Concrete, and acid-bearing wastewater infiltrates soil, and the time has been grown and can cause the soil property calcification, destroys the soil layer loose condition (of surface), thereby influences crop growth; When acid-bearing wastewater enters water body, owing to from water, seized oxygen, just destroy fish and participated in the life condition of microorganism etc. of self-purification of the self-purification of water, caused fish kills; Contain heavy metal substances such as chromium in the pickling waste waters, excessive chromium has carcinogenesis to human body.
The conventional process pickling waste waters generally adopts the method for lime neutralization, precipitation to handle, and the shortcoming of this treatment process is: 1) to chromium, the higher waste water of fluorine content, generally do not reach emission standard by one-level neutralization, sedimentation processing; 2) can not the effective recycling pickling waste waters, be the significant wastage to resource.
Summary of the invention
Problem to be solved by this invention provides stainless steel acid cleaning waste water combined treatment device and technology, guarantees that effectively waste water reaches emission standard, with waste reclaimation, economizes on resources greatly.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: the stainless steel acid cleaning waste water combined treatment device, comprise wastewater disposal basin, the strainer that is connected with wastewater disposal basin, the one-level cation exchanger that is connected with strainer, the secondary cation exchanger that is connected with the one-level cation exchanger, the security personnel's strainer that is connected with the secondary cation exchanger and the reverse osmosis unit that is connected with security personnel's strainer, be equipped with the regeneration acid solution on described one-level cation exchanger and the secondary cation exchanger and add mouth, also comprise and the one-level cation exchanger, the heavy metal gap that the secondary cation exchanger connects excludes device, described heavy metal gap excludes device and is provided with the precipitation medication and adds mouthful, and described heavy metal gap excludes to be provided with between device and the wastewater disposal basin heavy metal gap is excluded the circulation line that drainage in the device is transported to wastewater disposal basin.
Improved, be connected with the regeneration acid solution on the described regeneration acid solution interpolation mouth and irritate.
Improved, described one-level cation exchanger, secondary cation exchanger are connected by the precipitation medication interpolation mouth that regeneration waste liquid pipeline and heavy metal gap exclude on the device, are connected with the chemicals dosing plant that the precipitation medication is housed on the described regeneration waste liquid pipeline.
Improved, also comprise with the heavy metal gap excluding the sludge thickener that device is connected, described heavy metal gap excludes utensil shore pipe, and the outlet of described shore pipe is corresponding with the import of sludge thickener.
Improved, described strainer has the folded membrane filter core, and the filtering accuracy of described folded membrane filter core is 20 μ m.
The stainless steel acid cleaning waste water combined treatment process, adopted the stainless steel acid cleaning waste water combined treatment device, described stainless steel acid cleaning waste water combined treatment device comprises that wastewater disposal basin, strainer, one-level cation exchanger, secondary cation exchanger, security personnel's strainer, reverse osmosis unit, the filling of regeneration acid solution, chemicals dosing plant, heavy metal gap exclude device and sludge thickener, may further comprise the steps:
A. the stainless steel acid cleaning waste water that will be collected in the wastewater disposal basin is sent into strainer, removes micro oil and solid suspension material in the stainless steel acid cleaning waste water;
B. send into successively in one-level cation exchanger and the secondary cation exchanger through the stainless steel acid cleaning waste water behind filter removal micro oil and the solid suspension material, through the two-stage ion exchange reaction, remove a large amount of heavy metal ion;
C. the stainless steel acid cleaning waste water after one-level cation exchanger and secondary cation exchanger are removed a large amount of heavy metal ion is sent into security personnel's strainer, removes remaining solid suspension material in the stainless steel acid cleaning waste water;
D. after security personnel's strainer is removed the solid suspension material, send into reverse osmosis unit, produce water after the advanced treatment near the pure water standard, can be back to the production wash water, but dense water reuse is to the elementary acid washing water of acid cleaning process;
E. the cationic exchange resin adsorption heavy metal ions in wastewater in one-level cation exchanger and the secondary cation exchanger saturated after, add the regeneration acid solution through the filling of regeneration acid solution and to one-level cation exchanger and secondary cation exchanger, saturated Zeo-karb is carried out manipulation of regeneration, contain a large amount of heavy metal ion in the regeneration waste liquid that forms, regeneration waste liquid is added alkali lye through chemicals dosing plant, behind flocculation agent and the coagulant aids, PH transfers to 8～9, send into the heavy metal gap again and exclude device, the plurality of heavy metal material becomes precipitating sludge through the flocculation postprecipitation, precipitating sludge is discharged to and carries out collection and treatment in the sludge thickener, and the drainage cyclically utilizing that regeneration waste liquid forms after the heavy metal gap excludes the device processing is to wastewater disposal basin.
Improved, the ion exchange column that has the filling Zeo-karb in described one-level cation exchanger and the secondary cation exchanger, described regeneration acid solution is the mix acid liquor of nitric acid and hydrofluoric acid, the concentration of described regeneration acid solution is 5%～8%, the consumption of described regeneration acid solution is 2～3 times of ion-exchange column volume, and the weight ratio of described nitric acid and hydrofluoric acid is 2～10 ︰ 1.
Improved, the weight ratio of described nitric acid and hydrofluoric acid is 2 ︰ 1.
Improved, the weight ratio of described nitric acid and hydrofluoric acid is 10 ︰ 1.
Improved, the weight ratio of described nitric acid and hydrofluoric acid is 5 ︰ 1.
Improved, described alkali lye is milk of lime and sodium hydroxide, and described flocculation agent is polyacrylamide, and described coagulant aids is polymerize aluminum chloride.
Beneficial effect:
After adopting technique scheme, this invention stainless steel acid cleaning waste water combined treatment device and technology
1) strainer has the folded membrane filter core that filtering accuracy is 20 μ m, and filtration area increases about 30% than traditional filter for installation, and aquifer yield can increase 30%-50%, and water distribution is even, and current are difficult for taking place bias current, the more difficult obstruction of filter core;
2) continuous two-stage cation exchanger, by the classification setting of Zeo-karb, the heavy metal ion in the stage treatment spent pickle liquor, the resin utilization ratio improves, and removal of heavy metal ions is more thorough;
3) after the advanced treatment of security personnel's strainer and reverse osmosis unit, produce water near the pure water standard, can be back to the production wash water, but dense water reuse has fully been recycled the resource in the resource pickling waste waters to the elementary acid washing water of acid cleaning process;
4) adopt the heavy metal gap to exclude device, reach the harmless treatment to the ion exchange regenerant waste liquid, realize the recovery of precious metal ion in the spent pickle liquor, the rate of recovery of heavy metal ion 〉=95% also reclaims simultaneously and has utilized the water in the regeneration waste liquid.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further:
Fig. 1 is the structural representation of stainless steel acid cleaning waste water combined treatment device among the present invention.
Embodiment
Embodiment one:
As shown in Figure 1, the stainless steel acid cleaning waste water combined treatment device, comprise wastewater disposal basin 1, the strainer 2 that is connected with wastewater disposal basin, the one-level cation exchanger 3 that is connected with strainer, the secondary cation exchanger 4 that is connected with the one-level cation exchanger, the security personnel's strainer 5 that is connected with the secondary cation exchanger and the reverse osmosis unit 6 that is connected with security personnel's strainer, also comprise and the one-level cation exchanger, the heavy metal gap that the secondary cation exchanger connects excludes device 7, described heavy metal gap excludes to be provided with between device and the wastewater disposal basin heavy metal gap is excluded the circulation line 11 that drainage in the device is transported to wastewater disposal basin, also comprise with the heavy metal gap and exclude the sludge thickener 10 that device is connected, described heavy metal gap excludes utensil shore pipe, the outlet of described shore pipe is corresponding with the import of sludge thickener, be equipped with the regeneration acid solution on described one-level cation exchanger and the secondary cation exchanger and add mouth, as improved, be connected with the regeneration acid solution on the described regeneration acid solution interpolation mouth and irritate 8, described heavy metal gap excludes device and is provided with precipitation medication interpolation mouth, as improved, described one-level cation exchanger, the secondary cation exchanger is connected by the precipitation medication interpolation mouth that regeneration waste liquid pipeline 12 and heavy metal gap exclude on the device, is connected with the chemicals dosing plant 9 that the precipitation medication is housed on the described regeneration waste liquid pipeline.Described strainer has the folded membrane filter core of big flux, and the filtering accuracy of described folded membrane filter core is 20 μ m.Described one-level cation exchanger and secondary cation exchanger all adopt the strong-acid type cation interchanger.
Embodiment two:
The stainless steel acid cleaning waste water combined treatment process, adopted the stainless steel acid cleaning waste water combined treatment device, described stainless steel acid cleaning waste water combined treatment device comprises that wastewater disposal basin 1, strainer 2, one-level cation exchanger 3, secondary cation exchanger 4, security personnel's strainer 5, reverse osmosis unit 6, regeneration acid solution filling 8, chemicals dosing plant 9, heavy metal gap exclude device 7 and sludge thickener 10, may further comprise the steps:
A. the stainless steel acid cleaning waste water that will be collected in the wastewater disposal basin is sent into strainer, removes micro oil and solid suspension material in the stainless steel acid cleaning waste water;
B. remove stainless steel acid cleaning waste water behind micro oil and the solid suspension material through filter and send into successively in the secondary cation exchanger of the one-level cation exchanger of strong acid type and strong acid type, through the two-stage ion exchange reaction, remove a large amount of heavy metal ion;
C. the stainless steel acid cleaning waste water after one-level cation exchanger and secondary cation exchanger are removed a large amount of heavy metal ion is sent into security personnel's strainer, removes remaining solid suspension material in the stainless steel acid cleaning waste water;
D. after security personnel's strainer is removed the solid suspension material, send into reverse osmosis unit, produce water after the advanced treatment near the pure water standard, can be back to the production wash water, but dense water reuse is to the elementary acid washing water of acid cleaning process;
E. the cationic exchange resin adsorption heavy metal ions in wastewater in one-level cation exchanger and the secondary cation exchanger saturated after, irritate through the regeneration acid solution that to add concentration be that 5%～8% nitric acid and the mix acid liquor of hydrofluoric acid carry out manipulation of regeneration to saturated Zeo-karb to one-level cation exchanger and secondary cation exchanger, the consumption of described regeneration acid solution is 2～3 times of ion-exchange column volume, the weight ratio of described nitric acid and hydrofluoric acid is 2～10 ︰ 1, for example, the weight ratio of described nitric acid and hydrofluoric acid is 2 ︰ 1 or 3 ︰ 1 or 5 ︰ 1 or 6 ︰ 1 or 10 ︰ 1, contain a large amount of heavy metal ion in the regeneration waste liquid that forms, regeneration waste liquid is added the alkali lye of limy breast and sodium hydroxide through chemicals dosing plant, behind polyacrylamide flocculant and the polymerize aluminum chloride coagulant aids, PH transfers to 8～9, send into the heavy metal gap again and exclude device, the plurality of heavy metal material becomes precipitating sludge through the flocculation postprecipitation, precipitating sludge is discharged to and carries out collection and treatment in the sludge thickener, and the drainage cyclically utilizing that regeneration waste liquid forms after the heavy metal gap excludes the device processing is to wastewater disposal basin.Described ion exchange column is the elongated tubing string of filling Zeo-karb in one-level, the secondary cation exchanger.
Except above preferred embodiment, the present invention also has other embodiment, and those skilled in the art can make various changes and distortion according to the present invention, only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (8)
1. stainless steel acid cleaning waste water combined treatment device, it is characterized in that: comprise wastewater disposal basin (1), the strainer that is connected with wastewater disposal basin (2), the one-level cation exchanger (3) that is connected with strainer, the secondary cation exchanger (4) that is connected with the one-level cation exchanger, the security personnel's strainer (5) that is connected with the secondary cation exchanger and the reverse osmosis unit (6) that is connected with security personnel's strainer, be equipped with the regeneration acid solution on described one-level cation exchanger and the secondary cation exchanger and add mouth, also comprise and the one-level cation exchanger, the heavy metal gap that the secondary cation exchanger connects excludes device (7), described heavy metal gap excludes device and is provided with the precipitation medication and adds mouthful, and described heavy metal gap excludes to be provided with between device and the wastewater disposal basin heavy metal gap is excluded the circulation line (11) that drainage in the device is transported to wastewater disposal basin.
2. stainless steel acid cleaning waste water combined treatment device according to claim 1 is characterized in that: be connected with the regeneration acid solution on the described regeneration acid solution interpolation mouth and irritate (8).
3. stainless steel acid cleaning waste water combined treatment device according to claim 1 and 2, it is characterized in that: described one-level cation exchanger, secondary cation exchanger are connected by the precipitation medication interpolation mouth that regeneration waste liquid pipeline (12) and heavy metal gap exclude on the device, are connected with the chemicals dosing plant (9) that the precipitation medication is housed on the described regeneration waste liquid pipeline.
4. stainless steel acid cleaning waste water combined treatment device according to claim 1 and 2, it is characterized in that: also comprise with the heavy metal gap excluding the sludge thickener (10) that device is connected, described heavy metal gap excludes utensil shore pipe, and the outlet of described shore pipe is corresponding with the import of sludge thickener.
5. stainless steel acid cleaning waste water combined treatment device according to claim 1 and 2, it is characterized in that: described strainer has the folded membrane filter core, and the filtering accuracy of described folded membrane filter core is 20 μ m.
6. stainless steel acid cleaning waste water combined treatment process, adopted the stainless steel acid cleaning waste water combined treatment device, described stainless steel acid cleaning waste water combined treatment device comprises that wastewater disposal basin (1), strainer (2), one-level cation exchanger (3), secondary cation exchanger (4), security personnel's strainer (5), reverse osmosis unit (6), regeneration acid solution are irritated (8), chemicals dosing plant (9), the heavy metal gap excludes device (7) and sludge thickener (10), it is characterized in that: may further comprise the steps:
A. the stainless steel acid cleaning waste water that will be collected in the wastewater disposal basin is sent into strainer, removes micro oil and solid suspension material in the stainless steel acid cleaning waste water;
B. send into successively in one-level cation exchanger and the secondary cation exchanger through the stainless steel acid cleaning waste water behind filter removal micro oil and the solid suspension material, through the two-stage ion exchange reaction, remove a large amount of heavy metal ion;
C. the stainless steel acid cleaning waste water after one-level cation exchanger and secondary cation exchanger are removed a large amount of heavy metal ion is sent into security personnel's strainer, removes remaining solid suspension material in the stainless steel acid cleaning waste water;
D. after security personnel's strainer is removed the solid suspension material, send into reverse osmosis unit, produce water after the advanced treatment near the pure water standard, can be back to the production wash water, but dense water reuse is to the elementary acid washing water of acid cleaning process;
E. the cationic exchange resin adsorption heavy metal ions in wastewater in one-level cation exchanger and the secondary cation exchanger saturated after, add the regeneration acid solution through the filling of regeneration acid solution and to one-level cation exchanger and secondary cation exchanger, saturated Zeo-karb is carried out manipulation of regeneration, contain a large amount of heavy metal ion in the regeneration waste liquid that forms, regeneration waste liquid is added alkali lye through chemicals dosing plant, behind flocculation agent and the coagulant aids, PH transfers to 8～9, send into the heavy metal gap again and exclude device, the plurality of heavy metal material becomes precipitating sludge through the flocculation postprecipitation, precipitating sludge is discharged to and carries out collection and treatment in the sludge thickener, and the drainage cyclically utilizing that regeneration waste liquid forms after the heavy metal gap excludes the device processing is to wastewater disposal basin.
7. stainless steel acid cleaning waste water combined treatment device according to claim 6, it is characterized in that: the ion exchange column that has the filling Zeo-karb in described one-level cation exchanger and the secondary cation exchanger, described regeneration acid solution is the mix acid liquor of nitric acid and hydrofluoric acid, the concentration of described regeneration acid solution is 5%～8%, the consumption of described regeneration acid solution is 2～3 times of ion-exchange column volume, and the weight ratio of described nitric acid and hydrofluoric acid is 2～10 ︰ 1.
8. according to claim 6 or 7 described stainless steel acid cleaning waste water combined treatment devices, it is characterized in that: described alkali lye is milk of lime and sodium hydroxide, and described flocculation agent is polyacrylamide, and described flocculation agent is polymerize aluminum chloride.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418446A (en) * | 2013-08-30 | 2015-03-18 | 上海轻工业研究所有限公司 | Method and equipment for treating low-concentration lead-containing wastewater |
| CN104841190A (en) * | 2015-01-26 | 2015-08-19 | 常州大学 | Process for zero-discharge treatment of cutting waste liquor |
| CN105293745A (en) * | 2014-05-29 | 2016-02-03 | 宝山钢铁股份有限公司 | Cold rolling and acid pickling wastewater resourceful treatment process system |
| CN106542680A (en) * | 2016-10-19 | 2017-03-29 | 东莞市霖辉金属表面处理材料有限公司 | A kind of method of wastewater treatment of environmental protection electrophoretic paint production |
| CN106702398A (en) * | 2017-03-17 | 2017-05-24 | 青岛大仓防腐有限公司 | Anti-corrosive acid washing method for steel pipe |
| CN106746036A (en) * | 2017-03-15 | 2017-05-31 | 福建欣宇卫浴科技股份有限公司 | Stainless steel acid cleaning waste water processing system |
| CN107311856A (en) * | 2017-08-13 | 2017-11-03 | 河南省煤气(集团)有限责任公司义马气化厂 | A kind of purification recovery system of acetic acid waste liquid |
| CN109019959A (en) * | 2018-08-09 | 2018-12-18 | 中国电子系统工程第二建设有限公司 | A kind of processing unit of strong complex state heavy metal wastewater thereby and its discharge and reuse technology |
| CN109336289A (en) * | 2018-11-14 | 2019-02-15 | 浙江中达特钢股份有限公司 | A kind of recovery and treatment method of acid pickle |
| CN110078282A (en) * | 2019-04-19 | 2019-08-02 | 苏州希图环保科技有限公司 | A kind of heavy metal waste water treatment process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006131982A (en) * | 2004-11-09 | 2006-05-25 | Jfe Steel Kk | Treatment method for pickling waste solution and treatment device for pickling waste solution |
| WO2010071599A1 (en) * | 2008-12-17 | 2010-06-24 | Hydrochem (S) Pte Ltd | Process for the treatment of waste water generated in an aromatic acid production process |
| CN101935119A (en) * | 2010-08-23 | 2011-01-05 | 游京初 | Processing method and device for recovering precious metals contained in electroplating wastewater |
| CN202178076U (en) * | 2011-07-13 | 2012-03-28 | 浙江晶泉水处理设备有限公司 | Purification treatment device of water polluted by nuclear radiation |
| CN102839380A (en) * | 2011-06-23 | 2012-12-26 | 张家港凯纳信息技术有限公司 | Stainless steel cold rolling waste acid purification system |
-
2013
- 2013-04-27 CN CN2013101554931A patent/CN103241860A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006131982A (en) * | 2004-11-09 | 2006-05-25 | Jfe Steel Kk | Treatment method for pickling waste solution and treatment device for pickling waste solution |
| WO2010071599A1 (en) * | 2008-12-17 | 2010-06-24 | Hydrochem (S) Pte Ltd | Process for the treatment of waste water generated in an aromatic acid production process |
| CN101935119A (en) * | 2010-08-23 | 2011-01-05 | 游京初 | Processing method and device for recovering precious metals contained in electroplating wastewater |
| CN102839380A (en) * | 2011-06-23 | 2012-12-26 | 张家港凯纳信息技术有限公司 | Stainless steel cold rolling waste acid purification system |
| CN202178076U (en) * | 2011-07-13 | 2012-03-28 | 浙江晶泉水处理设备有限公司 | Purification treatment device of water polluted by nuclear radiation |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418446A (en) * | 2013-08-30 | 2015-03-18 | 上海轻工业研究所有限公司 | Method and equipment for treating low-concentration lead-containing wastewater |
| CN104418446B (en) * | 2013-08-30 | 2016-08-10 | 上海轻工业研究所有限公司 | The processing method of low concentration lead waste water and equipment |
| CN105293745A (en) * | 2014-05-29 | 2016-02-03 | 宝山钢铁股份有限公司 | Cold rolling and acid pickling wastewater resourceful treatment process system |
| CN104841190A (en) * | 2015-01-26 | 2015-08-19 | 常州大学 | Process for zero-discharge treatment of cutting waste liquor |
| CN106542680A (en) * | 2016-10-19 | 2017-03-29 | 东莞市霖辉金属表面处理材料有限公司 | A kind of method of wastewater treatment of environmental protection electrophoretic paint production |
| CN106542680B (en) * | 2016-10-19 | 2022-02-25 | 东莞市霖辉金属表面处理材料有限公司 | Wastewater treatment method for green and environment-friendly electrophoretic paint production |
| CN106746036A (en) * | 2017-03-15 | 2017-05-31 | 福建欣宇卫浴科技股份有限公司 | Stainless steel acid cleaning waste water processing system |
| CN106746036B (en) * | 2017-03-15 | 2024-01-05 | 福建希海环保科技有限公司 | Stainless steel pickling wastewater treatment system |
| CN106702398A (en) * | 2017-03-17 | 2017-05-24 | 青岛大仓防腐有限公司 | Anti-corrosive acid washing method for steel pipe |
| CN107311856A (en) * | 2017-08-13 | 2017-11-03 | 河南省煤气(集团)有限责任公司义马气化厂 | A kind of purification recovery system of acetic acid waste liquid |
| CN109019959A (en) * | 2018-08-09 | 2018-12-18 | 中国电子系统工程第二建设有限公司 | A kind of processing unit of strong complex state heavy metal wastewater thereby and its discharge and reuse technology |
| CN109336289A (en) * | 2018-11-14 | 2019-02-15 | 浙江中达特钢股份有限公司 | A kind of recovery and treatment method of acid pickle |
| CN110078282A (en) * | 2019-04-19 | 2019-08-02 | 苏州希图环保科技有限公司 | A kind of heavy metal waste water treatment process |
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Application publication date: 20130814 |