CN101648735A - Environmental functional material applied to electroplating wastewater treatment - Google Patents
Environmental functional material applied to electroplating wastewater treatment Download PDFInfo
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- CN101648735A CN101648735A CN200910034871A CN200910034871A CN101648735A CN 101648735 A CN101648735 A CN 101648735A CN 200910034871 A CN200910034871 A CN 200910034871A CN 200910034871 A CN200910034871 A CN 200910034871A CN 101648735 A CN101648735 A CN 101648735A
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Abstract
The invention discloses an environmental functional material applied to electroplating wastewater treatment; all components are as follows by mass percentage; kieselguhr, modified purified diatomite,bentonite, modified purified bentonite, attapulgite, modified purified attapulgite, kaoline and / or 20-80 percent of modified purified kaoline, 10-40 percent of humic acid and 10-40 percent of chitosan. The material has convenient usage, good treatment effect, and large and dense formed floccules, shortens settling time, and is easy to lead heavy metal ions, COD, ammonia-N, phosphorus, chromaticity and other indexes in wastewater to synchronously achieve discharge standard regulated nationally, the produced residue can recycle heavy metal, and secondary pollution is not easy to generate. Thematerial is suitable for treating wastewater in industries such as circuit boards, electro-plating, metal finishing, photographic film manufacturing, coal plants, municipal or industry waste incineration, battery production and the like.
Description
Technical field
The present invention relates to removal, purification or the trapping technique of heavy metal ion in the water body, is a kind of multi-functional environment friendly materials that is applied to electroplating wastewater processing specifically.
Background technology
Produce the waste water that contains multiple metal ions such as chromium, nickel, copper, cadmium, lead, zinc, aluminium, gold and silver, mercury through regular meeting in the industry; above-mentioned heavy metal ion has under physical environment stable in properties, accumulation in vivo, lower concentration and has characteristics such as secular toxic side effect; if can not get dealing carefully with, will cause severe contamination to environment.
Traditional pH regulator precipitator method are handled the waste water that contains heavy metal ion, promptly by adding alkaline chemical such as sodium hydroxide, yellow soda ash, lime, the pH value of waste water are transferred to about 11, form corresponding heavy metal hydroxide precipitation to remove heavy metal ion.The pH regulator precipitator method need careful control pH value, to guarantee best removal effect, if contain zwitter-ions such as zine ion, aluminum ion in the waste water, the precipitation of hydroxide that forms is dissolved when high alkalinity, needs to change different pH values, carries out multi stage precipitation and handles.Because the pH value of processed waste water is too high, supernatant liquid must pump into neutralization tank, adds acid readjustment pH to 6～9, could discharge, and treatment step is comparatively loaded down with trivial details.
Part producer adopts the Sodium Sulphide precipitator method to handle heavy metal wastewater thereby, and sodium sulphite that utilization adds and heavy metal ion form the sulfide precipitation of indissoluble to remove heavy metal ion.The solubleness of heavy metal ion sulfide precipitation in water is than low 3-10 the order of magnitude of corresponding metal precipitation of hydroxide, and it is less to remain in the aqueous solution concentration of heavy metal ion, and multiple metal ion can be removed in a step precipitation process.Compare with the pH regulator precipitator method, precipitation has advantages such as easily separated, easy filtration, subsequent disposal be simple.But sodium sulphite can produce the peculiar smell of hydrogen sulfide in the use, during dissolving the oxidation side reaction can take place, and heavy metal sulfide precipitation floc particle is tiny, the settling time waits so long very much, has reduced the removal effect of heavy metal ion.Add when excessive, can increase the organic concentration (COD) in the waste water on the contrary, form secondary pollution.
Minority enterprise uses efficient heavy trapping agent (abbreviation recapture agent) to handle heavy metal wastewater thereby, the chelating precipitation of recapture agent and heavy metal ion formation indissoluble that utilization adds is with the removal heavy metal ion, and multiple metal ion can be removed in a step precipitation process.Compare with the pH regulator precipitator method and the Sodium Sulphide precipitator method, the agent of recapturing has uses advantages such as simple, that settling of floccus is very fast, subsequent disposal is convenient.But processing cost is higher, has limited the popularization and the use of the agent of recapturing.
Summary of the invention
In order to address the above problem, the invention provides a kind of environment functional material that is applied to electroplating wastewater processing, by with powdery natural minerals diatomite, wilkinite, attapulgite, the smart soil of kaolin or their modification (refers to high-temperature activation, acidifying, modifications such as inorganic salt mineralising are handled, can obtain by procurement of commodities, as Nanjing Ai Lunte Chung In, Shengzhou city China power diatomite product company limited, Hangzhou Jin He environment water-purifying material company limited etc.), being distributed widely in natural organic polymer material humic acid and natural macromolecular material chitosan mixes according to a certain percentage, make a kind of multi-functional environment friendly materials (being called for short MT) that is applied to electroplating wastewater processing efficiently, be used to handle the trade effluent that contains heavy metal ion, to strengthen comprehensive treatment effect to electroplating wastewater.Present technique invention at normal temperatures with waste water in Hg
2+, Cd
2+, Pb
2+, Mn
2+, Cu
2+, Ni
2+, Zn
2+, Cr
3+, Cr
6+Etc. various heavy metal ion adsorb, ion-exchange, complexing or chelatropic reaction, generate the water-insoluble precipitation with metal ion.In addition, MT can also adsorb the organism of nonpolar organic matter in the electroplating wastewater, polar organic matter and all kinds of poisonous and difficult for biological degradation, pollutent is by absorption fast, physics flocculation, precipitation, the smart soil of wilkinite, attapulgite, kaolin and modification thereof, humic acid have higher surface area and huge pore volume and stronger adsorptive power in addition, trickle and material superfine is adsorbed onto its surface the organism in the sewage and inorganics, form chain structure and also sink to separating fast, have functions such as the COD of reduction, denitrogenation dephosphorizing, decolouring with water body.
Realize that the technical scheme that purpose of the present invention is taked is:
Be applied to the environment functional material of electroplating wastewater processing, each constituent mass per-cent is:
Diatomite, modified diatomite, wilkinite, the smart soil of modified alta-mud, attapulgite, attapulgite modified smart soil, kaolin and/or the smart soil 20～80% of modified kaolin;
Humic acid 10-40%;
Chitosan 10-40%.
Its using method is: according to the heavy metal ion in the waste water, organism kinds and concentration thereof, add an amount of environment functional material of the present invention, also can be used with other water conditioners such as PAM, the floc particle that generates is big, flco is closely knit, settling time is short, and indexs such as the heavy metal ion in the processed waste water, COD, ammonia nitrogen, phosphorus, colourity reach national specified discharge standard.
The present invention is easy to use, and treatment effect is good.Can use separately, also can be used with other water conditioner.The floc particle that generates is big, flco is closely knit, has shortened the settling time, easily makes indexs such as heavy metal ion in the waste water, COD, ammonia nitrogen, phosphorus, colourity reach national specified discharge standard synchronously, and the recyclable heavy metal of the residue of generation is difficult for producing secondary pollution.Required equipment is simple, and is easy to operate, and expense is cheap, goes for circuit card, plating, metal finishing, film manufacturing, coal-fired plant, municipal administration or industry wastewater treatments such as industrial refuse and incineration, battery production.
Embodiment
Below in conjunction with embodiment, the present invention is elaborated.
Embodiment 1
20% modified diatomite, 40% humic acid and 40% chitosan add in the mixer according to aforementioned proportion, mix 2 hours, obtain being applied to the multi-functional environment friendly materials of electroplating wastewater processing.
Embodiment 2
30% attapulgite, 10% kaolin, 40% humic acid and 20% chitosan add in the mixer according to aforementioned proportion, mix 3 hours, obtain being applied to the multi-functional environment friendly materials of electroplating wastewater processing.
Embodiment 3
50% modified diatomite, 5% wilkinite, 5% attapulgite, 30% humic acid and 10% chitosan add in the mixer according to aforementioned proportion, mix 4 hours, obtain being applied to the multi-functional environment friendly materials of electroplating wastewater processing.
Embodiment 4
20% diatomite, 20% wilkinite, 20% attapulgite, 20% kaolin, 10% humic acid and 10% chitosan add respectively in the mixer, mix 5 hours, obtain being applied to the multi-functional environment friendly materials of electroplating wastewater processing.
Select the water of releasing at the board wastewater station of Kunshan company for use, recording copper ion concentration is 0.83mg.L
-1, COD is 127.1mg.L
-1.Add 500mg.L
-1The multi-functional environment friendly materials of embodiment 1-embodiment 4, stir speed (S.S.) is 30r.min
-1, reaction is left standstill filtration after stirring 5min, gets supernatant liquor and measures its copper ion concentration and be respectively 0.273mg.L
-1, 0.360mg.L
-1, 0.494mg.L
-1And 0.481mg.L
-1COD is respectively 83.1mg.L
-1, 69.6mg.L
-1, 49.7mg.L
-1And 42.5mg.L
-1, all can reach discharging standards.
Embodiment 5, and basic identical with embodiment, different is: replace modified diatomite with the smart soil of modified alta-mud.
Embodiment 6, and basic identical with embodiment, different is: replace modified diatomite with attapulgite modified smart soil.
Embodiment 7, and basic identical with embodiment, different is: replace modified diatomite with the smart soil of modified kaolin.
Claims (1)
1, a kind of environment functional material that is applied to electroplating wastewater processing, each constituent mass per-cent is:
Diatomite, modified diatomite, wilkinite, the smart soil of modified alta-mud, attapulgite, attapulgite modified smart soil, kaolin and/or the smart soil 20～80% of modified kaolin;
Humic acid 10-40%;
Chitosan 10-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910034871A CN101648735A (en) | 2009-09-10 | 2009-09-10 | Environmental functional material applied to electroplating wastewater treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910034871A CN101648735A (en) | 2009-09-10 | 2009-09-10 | Environmental functional material applied to electroplating wastewater treatment |
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| Publication Number | Publication Date |
|---|---|
| CN101648735A true CN101648735A (en) | 2010-02-17 |
Family
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD4142C1 (en) * | 2010-10-12 | 2012-07-31 | Inst De Chimie Al Academiei De Stiinte A Moldovei | Process for water purification from hydrogen sulfide and sulfides |
| CN103086537A (en) * | 2012-12-07 | 2013-05-08 | 常州大学 | Method of removing cadmium in water |
| CN103658160A (en) * | 2013-09-11 | 2014-03-26 | 浙江爱迪曼水科技有限公司 | Comprehensive restoration method of soil with heavy metal Cr |
| CN103922449A (en) * | 2014-04-04 | 2014-07-16 | 张爱均 | Efficient environment-friendly flocculant for treatment of black-odor river |
| CN104445501A (en) * | 2014-11-20 | 2015-03-25 | 镇江拜因诺生物科技有限公司 | Electroplating wastewater treatment agent |
| CN105347423A (en) * | 2015-10-14 | 2016-02-24 | 李东 | Organic nanometer water treatment agent and method for treating sewage with sewage treatment agent |
| CN105858752A (en) * | 2016-05-31 | 2016-08-17 | 陈萍 | Sewage treatment agent special for slaughter processing and preparation method thereof |
| CN105858756A (en) * | 2016-05-31 | 2016-08-17 | 陈萍 | Sewage treatment agent special for electroplating and preparation method thereof |
| CN105858748A (en) * | 2016-05-31 | 2016-08-17 | 陈萍 | Wastewater treating agent special for waste lithium battery electrolyte and preparation method of wastewater treating agent |
| CN105967346A (en) * | 2016-05-26 | 2016-09-28 | 许婷 | Urban domestic wastewater treating agent and preparation method thereof |
| CN106006774A (en) * | 2016-05-31 | 2016-10-12 | 陈萍 | Soybean processing dedicated sewage treatment agent and preparation method thereof |
| CN106064839A (en) * | 2016-05-31 | 2016-11-02 | 陈萍 | Sewage-treating agent that a kind of fermentation industry is special and preparation method thereof |
| CN108236810A (en) * | 2018-01-23 | 2018-07-03 | 庞志兰 | A kind of filtering material and its preparation process for Industrial Wastewater Treatment |
| CN109589916A (en) * | 2018-11-29 | 2019-04-09 | 浙江正洁环境科技有限公司 | A kind of heavy metal absorbent and preparation method thereof |
| CN110642350A (en) * | 2019-09-30 | 2020-01-03 | 天津科技大学 | Deep phosphorus removal method for municipal domestic sewage |
-
2009
- 2009-09-10 CN CN200910034871A patent/CN101648735A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD4142C1 (en) * | 2010-10-12 | 2012-07-31 | Inst De Chimie Al Academiei De Stiinte A Moldovei | Process for water purification from hydrogen sulfide and sulfides |
| CN103086537A (en) * | 2012-12-07 | 2013-05-08 | 常州大学 | Method of removing cadmium in water |
| CN103658160A (en) * | 2013-09-11 | 2014-03-26 | 浙江爱迪曼水科技有限公司 | Comprehensive restoration method of soil with heavy metal Cr |
| CN103658160B (en) * | 2013-09-11 | 2015-12-23 | 浙江爱迪曼水科技有限公司 | The method for comprehensive repairing of a kind of heavy metal-polluted soil Cr |
| CN103922449A (en) * | 2014-04-04 | 2014-07-16 | 张爱均 | Efficient environment-friendly flocculant for treatment of black-odor river |
| CN103922449B (en) * | 2014-04-04 | 2015-08-26 | 张爱均 | A kind of high-efficiency environment friendly flocculation agent administered for black smelly river |
| CN104445501A (en) * | 2014-11-20 | 2015-03-25 | 镇江拜因诺生物科技有限公司 | Electroplating wastewater treatment agent |
| CN105347423A (en) * | 2015-10-14 | 2016-02-24 | 李东 | Organic nanometer water treatment agent and method for treating sewage with sewage treatment agent |
| CN105967346A (en) * | 2016-05-26 | 2016-09-28 | 许婷 | Urban domestic wastewater treating agent and preparation method thereof |
| CN105858752A (en) * | 2016-05-31 | 2016-08-17 | 陈萍 | Sewage treatment agent special for slaughter processing and preparation method thereof |
| CN105858748A (en) * | 2016-05-31 | 2016-08-17 | 陈萍 | Wastewater treating agent special for waste lithium battery electrolyte and preparation method of wastewater treating agent |
| CN105858756A (en) * | 2016-05-31 | 2016-08-17 | 陈萍 | Sewage treatment agent special for electroplating and preparation method thereof |
| CN106006774A (en) * | 2016-05-31 | 2016-10-12 | 陈萍 | Soybean processing dedicated sewage treatment agent and preparation method thereof |
| CN106064839A (en) * | 2016-05-31 | 2016-11-02 | 陈萍 | Sewage-treating agent that a kind of fermentation industry is special and preparation method thereof |
| CN108236810A (en) * | 2018-01-23 | 2018-07-03 | 庞志兰 | A kind of filtering material and its preparation process for Industrial Wastewater Treatment |
| CN109589916A (en) * | 2018-11-29 | 2019-04-09 | 浙江正洁环境科技有限公司 | A kind of heavy metal absorbent and preparation method thereof |
| CN110642350A (en) * | 2019-09-30 | 2020-01-03 | 天津科技大学 | Deep phosphorus removal method for municipal domestic sewage |
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Open date: 20100217 |