CN101549919A - Method for treating electroplating integrated waste water - Google Patents
Method for treating electroplating integrated waste water Download PDFInfo
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- CN101549919A CN101549919A CNA2008100602284A CN200810060228A CN101549919A CN 101549919 A CN101549919 A CN 101549919A CN A2008100602284 A CNA2008100602284 A CN A2008100602284A CN 200810060228 A CN200810060228 A CN 200810060228A CN 101549919 A CN101549919 A CN 101549919A
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Abstract
The invention relates to a method for treating electroplating integrated waste water. Aiming at overcoming the defects that the precipitation of heavy metal is not complete and treated electroplating waste water is difficult to reach a standard of the prior method of adopting a sodium hydroxide solution to regulate the pH value of the electroplating integrated waste water to precipitate the heavy metal in the electroplating waste water so as to treat electroplating integrated waste water, the invention provides the method for treating the electroplating integrated waste water, which ensures heavy metal precipitates completely and the treated electroplating waste water can reach a standard and is easy to operate and control. The method comprises the following steps: (1) the electroplating waste water is filled into an electroplating integrated waste water pond, and lime slurry is added and stirred to the electroplating waste water (2) ferrous sulfide is added to the supernatant fluid of the electroplating waste water treated by the lime slurry; (3) a PAC flocculating agent is added and stirred to the electroplating waste water; (4) a PAM flocculating agent is added to the electroplating waste water and stirred to the same for a while for naturally precipitation; and (5) the supernatant fluid of the electroplating waste water which reaches the standard is drained off, precipitate press filter is carried out, and filter liquid returns to the electroplating integrated waste water pond.
Description
Technical field
The invention belongs to the technical field of Industrial Wastewater Treatment, particularly a kind of method for treating electroplating integrated waste water.
Background technology
Up to now, electroplating wastewater processing is up to standard is still a hard nut to crack.What now generally use is the pH value of regulating electroplating integrated waste water with sodium hydroxide solution, makes heavy metal copper, nickel, trivalent chromium, zinc etc. become precipitation of hydroxide, and precipitation is few like this, and waste residue is easily handled.But since various heavy metal precipitations completely pH value be inconsistent, and the solubility product of oxyhydroxide is not very little, causes heavy metal precipitation incomplete, the electroplating wastewater after the processing is difficult to up to standard.Precipitate completely as metallic nickel ions that pH value is＞9.5, the pH value that generally will regulate waste water is 10-11, could precipitate fully, and this moment trivalent chromium and zinc then dissolved; As the pH value of regulating waste water is 8-9, and nickel precipitates again not exclusively.In addition, existing numerous complexing agent throw outs in the electroplating wastewater as phosphoric acid salt, tartrate, Citrate trianion, fluorion etc., also are to make in the electroplating wastewater heavy metal precipitation incomplete, the major reason that the electroplating wastewater after the processing can not be up to standard.
Summary of the invention
The sodium hydroxide solution that adopts is regulated electroplating integrated waste water pH value and is made in the electroplating wastewater the existing heavy metal precipitation of heavy metal precipitation method incomplete when the present invention is directed to the existing plating wastewater treatment, electroplating wastewater after the processing is difficult to weak point up to standard, provide a kind of heavy metal precipitation thoroughly, the electroplating wastewater after handling can a kind of method for treating electroplating integrated waste water up to standard, simple to operate, manageable.
The technical solution used in the present invention is finished in the following way: a kind of method for treating electroplating integrated waste water, and it may further comprise the steps:
(1) inject electroplating integrated wastewater disposal basin at electroplating wastewater, add lime white under stirring in electroplating wastewater, the pH value that makes electroplating wastewater is 8～9;
(2) add Iron sulfuret at supernatant liquor place through adding the electroplating wastewater after lime white is handled;
(3) in electroplating wastewater, stir adding PAC flocculation agent;
(4) add the PAM flocculation agent in electroplating wastewater, stirring promptly stops natural subsidence slightly;
(5) electroplating wastewater supernatant liquor qualified discharge, the precipitation press filtration, filtrate is returned into electroplating integrated wastewater disposal basin.
In above-mentioned method for treating electroplating integrated waste water, the method that adds Iron sulfuret at the supernatant liquor place of electroplating wastewater is: Iron sulfuret is contained in the plastics casing, be provided with several apertures at the plastics casing top, the plastics casing that Iron sulfuret is housed is put supernatant liquor place below the electroplating wastewater liquid level in electroplating integrated wastewater disposal basin.
Handle in the electroplating wastewater process with the present invention, earlier the pH value of electroplating wastewater is adjusted to 8～9 by adding lime white, after reaction, the plastics casing that Iron sulfuret is housed is put supernatant liquor place below the electroplating wastewater liquid level, Iron sulfuret solubleness is very low, can slow release go out sulfonium ion, make heavy metal precipitation more complete.In the present invention, replace in the sodium hydroxide and electroplating wastewater with lime white, make the complexing agent precipitation in the alkali cleaning waste water and other electroplating process in the plating, as phosphoric acid salt, tartrate, Citrate trianion, fluorion etc., can both better obtain precipitation, the processing discharged wastewater met the national standard is guaranteed.
Method for treating electroplating integrated waste water of the present invention have the reaction times short, processing efficiency is high, and is simple to operate, be easy to control, less investment, economic benefit height, the characteristics that easily promote, practical value are high.
Embodiment
The invention will be further described below by embodiment.
A kind of method for treating electroplating integrated waste water, it may further comprise the steps:
(1) inject electroplating integrated wastewater disposal basin at electroplating wastewater, add lime white under stirring in electroplating wastewater, the pH value that makes electroplating wastewater is 8～9, stirring reaction 10～20 minutes;
(2) add Iron sulfuret at supernatant liquor place through adding the electroplating wastewater after lime white is handled;
(3) in electroplating wastewater, add the PAC flocculation agent, stirring reaction 5～15 minutes, added PAC flocculation dosage is by 0.7～1.4Kg/ ton waste water;
(4) add 1～5% PAM flocculation agent in electroplating wastewater, stirring promptly stops slightly, natural subsidence, and added 1～5%PAM flocculation dosage is by 700～1500ml/ ton waste water;
(5) electroplating wastewater supernatant liquor qualified discharge, the precipitation press filtration, filtrate is returned into electroplating integrated wastewater disposal basin.
In above-mentioned method for treating electroplating integrated waste water, the method that adds Iron sulfuret at the supernatant liquor place of electroplating wastewater is: Iron sulfuret is contained in the plastics casing, be provided with several apertures at the plastics casing top, the plastics casing that Iron sulfuret is housed is put supernatant liquor place below the electroplating wastewater liquid level in electroplating integrated wastewater disposal basin.
Claims (3)
1, a kind of method for treating electroplating integrated waste water is characterized in that this method for treating electroplating integrated waste water, may further comprise the steps:
(1) inject electroplating integrated wastewater disposal basin at electroplating wastewater, add lime white under stirring in electroplating wastewater, the pH value that makes electroplating wastewater is 8～9;
(2) add Iron sulfuret at supernatant liquor place through adding the electroplating wastewater after lime white is handled;
(3) in electroplating wastewater, stir adding PAC flocculation agent;
(4) add the PAM flocculation agent in electroplating wastewater, stirring promptly stops natural subsidence slightly;
(5) electroplating wastewater supernatant liquor qualified discharge, the precipitation press filtration, filtrate is returned into electroplating integrated wastewater disposal basin.
2, method for treating electroplating integrated waste water according to claim 1, it is characterized in that the method that adds Iron sulfuret at the supernatant liquor place of electroplating wastewater is: Iron sulfuret is contained in the plastics casing, be provided with several apertures at the plastics casing top, the plastics casing that Iron sulfuret is housed is put supernatant liquor place below the electroplating wastewater liquid level in electroplating integrated wastewater disposal basin.
3, method for treating electroplating integrated waste water according to claim 1 and 2 is characterized in that method for treating electroplating integrated waste water may further comprise the steps:
(1) inject electroplating integrated wastewater disposal basin at electroplating wastewater, add lime white under stirring in electroplating wastewater, the pH value that makes electroplating wastewater is 8～9, stirring reaction 10～20 minutes;
(2) add Iron sulfuret at supernatant liquor place through adding the electroplating wastewater after lime white is handled;
(3) in electroplating wastewater, add the PAC flocculation agent, stirring reaction 5～15 minutes, added PAC flocculation dosage is by 0.7～1.4Kg/ ton waste water;
(4) add 1～5%PAM flocculation agent in electroplating wastewater, stirring promptly stops slightly, natural subsidence, and added 1～5%PAM flocculation dosage is by 700～1500ml/ ton waste water;
(5) electroplating wastewater supernatant liquor qualified discharge, the precipitation press filtration, filtrate is returned into electroplating integrated wastewater disposal basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100602284A CN101549919A (en) | 2008-03-31 | 2008-03-31 | Method for treating electroplating integrated waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100602284A CN101549919A (en) | 2008-03-31 | 2008-03-31 | Method for treating electroplating integrated waste water |
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| CN101549919A true CN101549919A (en) | 2009-10-07 |
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| CNA2008100602284A Pending CN101549919A (en) | 2008-03-31 | 2008-03-31 | Method for treating electroplating integrated waste water |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956192A (en) * | 2010-11-05 | 2011-01-26 | 西南大学 | Method for treating aluminum alloy trivalent chromium passivation solution waste |
| CN102336486A (en) * | 2011-08-25 | 2012-02-01 | 厦门市威士邦膜科技有限公司 | Integral electroplating waste water treatment equipment and process |
| CN102583836A (en) * | 2012-03-15 | 2012-07-18 | 南京银茂铅锌矿业有限公司 | Method for treating copper/lead/zinc ore mining sewage |
| CN102616958A (en) * | 2012-03-29 | 2012-08-01 | 安徽省天虹绿洲环保科技有限公司 | Treatment technology of low concentration electroplating wastewater |
| CN103693728A (en) * | 2014-01-08 | 2014-04-02 | 苏州道蒙恩电子科技有限公司 | Pre-treatment technology of wastewater containing phosphorus and nickel |
| CN103880206A (en) * | 2012-12-20 | 2014-06-25 | 深圳职业技术学院 | Sludge dynamic nucleation flocculated heavy metal wastewater advanced treatment method |
| CN104176848A (en) * | 2013-05-24 | 2014-12-03 | 深圳市清淼环保科技有限公司 | Heavy metal wastewater recycling method |
| CN105152403A (en) * | 2015-09-15 | 2015-12-16 | 江苏锦宇环境工程有限公司 | Treatment method of electroplating wastewater |
| CN105439326A (en) * | 2015-12-28 | 2016-03-30 | 北京北方节能环保有限公司 | Treatment method of chemical nickel-plating wastewater |
| CN110156207A (en) * | 2019-05-17 | 2019-08-23 | 岳西县创奇电器有限责任公司 | A kind of sewage circulating treating system and operating method for electrogalvanizing |
-
2008
- 2008-03-31 CN CNA2008100602284A patent/CN101549919A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956192A (en) * | 2010-11-05 | 2011-01-26 | 西南大学 | Method for treating aluminum alloy trivalent chromium passivation solution waste |
| CN102336486A (en) * | 2011-08-25 | 2012-02-01 | 厦门市威士邦膜科技有限公司 | Integral electroplating waste water treatment equipment and process |
| CN102583836A (en) * | 2012-03-15 | 2012-07-18 | 南京银茂铅锌矿业有限公司 | Method for treating copper/lead/zinc ore mining sewage |
| CN102616958A (en) * | 2012-03-29 | 2012-08-01 | 安徽省天虹绿洲环保科技有限公司 | Treatment technology of low concentration electroplating wastewater |
| CN103880206A (en) * | 2012-12-20 | 2014-06-25 | 深圳职业技术学院 | Sludge dynamic nucleation flocculated heavy metal wastewater advanced treatment method |
| CN103880206B (en) * | 2012-12-20 | 2015-11-04 | 深圳职业技术学院 | The heavy metal wastewater thereby deep treatment method of the dynamic nucleation flocculation of mud |
| CN104176848A (en) * | 2013-05-24 | 2014-12-03 | 深圳市清淼环保科技有限公司 | Heavy metal wastewater recycling method |
| CN104176848B (en) * | 2013-05-24 | 2016-04-27 | 深圳市清淼环保科技有限公司 | Heavy metal wastewater thereby method of resource |
| CN103693728A (en) * | 2014-01-08 | 2014-04-02 | 苏州道蒙恩电子科技有限公司 | Pre-treatment technology of wastewater containing phosphorus and nickel |
| CN105152403A (en) * | 2015-09-15 | 2015-12-16 | 江苏锦宇环境工程有限公司 | Treatment method of electroplating wastewater |
| CN105439326A (en) * | 2015-12-28 | 2016-03-30 | 北京北方节能环保有限公司 | Treatment method of chemical nickel-plating wastewater |
| CN110156207A (en) * | 2019-05-17 | 2019-08-23 | 岳西县创奇电器有限责任公司 | A kind of sewage circulating treating system and operating method for electrogalvanizing |
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Application publication date: 20091007 |