CN101357798B - Heavy metal wastewater purificant - Google Patents
Heavy metal wastewater purificant Download PDFInfo
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- CN101357798B CN101357798B CN2007101298889A CN200710129888A CN101357798B CN 101357798 B CN101357798 B CN 101357798B CN 2007101298889 A CN2007101298889 A CN 2007101298889A CN 200710129888 A CN200710129888 A CN 200710129888A CN 101357798 B CN101357798 B CN 101357798B
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- heavy metal
- percent
- carbonate
- wastewater
- metal wastewater
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Abstract
The invention belongs to the technical field of industrial water treatment and relates to a wastewater purifying agent, in particular to a purifying agent for processing various industrial wastewater (more particularly electroplating wastewater) containing heavy metals. The active ingredients of the purifying agent comprise diatomaceous earth, metal sulfide, sulfite, carbonate and aluminium salt, the percentage contents by weight of various ingredients are as follows, the diatomaceous earth is 30 percent to 35 percent, the metal sulfide is 20 percent to 30 percent, the sulfite is 18 percent to 23 percent, the aluminium salt is 5 percent to 10 percent, and the rest is the carbonate. The wastewater purifying agent can effectively solve the problems of complicated technology, mixed and unclear water quality and complicated electroplating additive of the existing electroplating production technology, thereby leading the wastewater to stably achieve the standards for a long time after the treatment.
Description
Technical field
The invention belongs to the Treatment of Industrial Water technical field, relate to a kind of wastewater purificant, be specially a kind of scavenging agent that is used to handle all types of industries waste water (especially electroplating wastewater) that contains heavy metal.
Background technology
The treatment process of heavy metal wastewater thereby has a variety of at present, for example, and the alkali formula precipitator method, ion exchange method, electroosmose process, reverse osmosis method, electric flocculence etc.Using at present maximum is the alkali formula precipitator method, is exactly only to regulate pH value by adding alkali, makes heavy metal ion formation precipitation of hydroxide and the method for removing.This method technology is simple, processing ease, construction and running cost are lower, but that shortcoming is the best sedimentary pH value scope of various heavy metal ion is different, must the stage agent addition precipitation, if be mixed with complexing ion in the waste water, and the just very difficult qualified discharge of some ion.Ion exchange method is to utilize the exchange ion in the ion exchange resin to exchange and be removed with some ion in the heavy metal wastewater thereby, the method that waste water is purified, the shortcoming of this method are that the price of resin is expensive, the running cost height, resin regeneration is difficulty, and dense shipwreck is handled.Electroosmose process is an electrochemistry sepn process, be to be motivating force with the potential difference under the effect of DC electric field, with charged ion in the solution and the isolating membrane process of not charged component, the shortcoming of this method is that into the water condition is strict by charged membrane, film pollutes easily, the running cost height.Reverse osmosis method is to utilize reverse osmosis membrane that the heavy metal in the waste water is carried out separating process, and the shortcoming of this method is into water strictness, and film pollutes easily, the running cost height.The electricity flocculence is to make the objectionable impurities in the waste water by electrolytic process oxidation and reduction reaction take place respectively on yin, yang the two poles of the earth, generate water-fast precipitation, remove by flocculation, the shortcoming of this method is that removal efficient and water quality situation, electric weight size, battery lead plate all have much relations, is difficult to control.
Summary of the invention
The objective of the invention is to the defective that exists at existing heavy metal wastewater thereby purifying method, a kind of scavenging agent that heavy metal wastewater thereby purifies that directly applies to is provided, this scavenging agent can make treatment process more simple, manages conveniently, and working cost is lower.
Technical scheme of the present invention is as follows: a kind of heavy metal wastewater purificant, its effective constituent comprises diatomite, metallic sulfide, sulphite, carbonate and aluminium salt, the quality percentage composition of various compositions is respectively diatomite 30%～35%, metallic sulfide 20%～30%, sulphite 18%～23%, aluminium salt 5%～10%, carbonate 2%～27%.
Aforesaid heavy metal wastewater purificant, wherein, metallic sulfide can be sulfurated lime, sodium sulphite or barium sulphide.
Aforesaid heavy metal wastewater purificant, wherein, sulphite can be S-WAT, sodium bisulfite or Sodium Pyrosulfite.
Aforesaid heavy metal wastewater purificant, wherein, carbonate can be lime carbonate or yellow soda ash.
Aforesaid heavy metal wastewater purificant, wherein, aluminium salt can be aluminum chloride or Tai-Ace S 150.
Aforesaid heavy metal wastewater purificant, wherein, preferably each effective constituent and quality percentage composition thereof are respectively diatomite 32%, sulfurated lime 25%, S-WAT 20%, aluminum chloride 8%, lime carbonate 15%.
Heavy metal scavenging agent provided by the present invention has effectively solved present electroplate technology complexity, and the water quality mixing is unclear, and the electroplating additive complicated problems can make waste water steady in a long-term after treatment up to standard; Use this heavy metal species scavenging agent, only need the workshop that cyanide wastewater is separated, but other waste water mixing, thus alleviated the pressure of workshop shunting; The heavy metal scavenging agent self contains the ion of transferring alkali, can reduce the follow-up amount that adds alkali, thereby has saved cost and reduced the growing amount of mud.
Embodiment
Heavy metal wastewater purificant provided by the present invention is a main component with diatomite and metallic sulfide, adds sulphite, carbonate and aluminium salt simultaneously and constitutes.The quality percentage composition of various compositions is respectively diatomite 30%～35%, metallic sulfide 20%～30%, sulphite 18%～23%, aluminium salt 5%～10%, carbonate 2%～27%.
Be specific examples with diatomite, sulfurated lime, S-WAT, lime carbonate and aluminum chloride below, the present invention will be described in detail.
--S-WAT: owing to contain chromium in some heavy metal wastewater thereby, and generally be to exist with the hexavalent chromium form, can not directly remove, need to convert sexavalent chrome to trivalent chromium earlier, so add a certain amount of S-WAT in the medicament of the present invention in order to reduction of hexavalent chromium.Concrete reaction is as follows:
2H
2Cr
2O
7+2Na
2SO
3+3H
2SO
4→Cr
2(SO
4)
3+3Na
2SO
4+4H
2O
(heavy metal wastewater thereby is generally acidity), [H in the solution of reaction back
+] reduce, sexavalent chrome also is reduced into precipitable trivalent chromium.
--lime carbonate: adding lime carbonate can further reduce [the H in the solution
+], react as follows:
2H
++CO
3 2-→CO
2↑+H
2O
Because the rising of pH value can be removed a part of heavy metal ion, as Cu
2+, Ni
2+, Cr
3+, Zn
2+Deng, react as follows:
Cu
2++2OH
-→Cu(OH)
2↓ KspCu(OH)
2＝5.6*10
-20
Ni
2++2OH
-→Ni(OH)
2↓ KspNi(OH)
2＝2.2*10
-16
Zn
2++2OH
-→Zn(OH)
2↓ KspZn(OH)
2＝5.0*10
-17
Cr
3++3OH
-→Cr(OH)
3↓ KspCr(OH)
3＝1.0*10
-30
--sulfurated lime: because the dissolving grade constant of metallic sulfide is littler than precipitate metal hydroxides, easier precipitation, so the adding sulfurated lime can further be removed the metal ion in the dissolving, react as follows:
M
N++ S
2-→ M
2S
n↓ (wherein M is a metal ion, and n is that metal ion institute is electrically charged)
--diatomite:, have big aperture surface area (＞70m so in treatment agent, add in order to remove the heavy metal ion in the waste water more completely
2/ g) diatomite utilizes its adsorption, and heavy metal ion adsorbed with in the waste water becomes big with trickle particle, adds the throwing out of himself, removes the trickle suspended substance in the water rapidly, efficiently.Simultaneously, diatomite can also be removed portion C OD, BOD, S, NH3-N and CN
-Deng.
--aluminum chloride: in treatment agent, add a certain amount of aluminum chloride, can utilize Al
3+Throwing out, make fast separating solid from liquid.The synergistic effect of above-mentioned several materials also can make the heavy metal ion in the waste water precipitate rapidly.
Several concrete scavenging agent composition and consumptions are provided below:
| Sulfurated lime | S-WAT | Aluminum chloride | Diatomite | Lime carbonate |
| 25％ | 20％ | 8％ | 32％ | 15％ |
| 20％ | 18％ | 5％ | 30％ | 27％ |
| Sulfurated lime | S-WAT | Aluminum chloride | Diatomite | Lime carbonate |
| 30％ | 23％ | 10％ | 35％ | 2％ |
Sulfurated lime in the last table can substitute with sodium sulphite or barium sulphide, S-WAT can substitute with sodium bisulfite or Sodium Pyrosulfite, aluminum chloride can substitute with Tai-Ace S 150, and lime carbonate can substitute with yellow soda ash, and diatomite can substitute with other sorbing material with adsorptive power.
Claims (6)
1. heavy metal wastewater purificant, it is characterized in that: the effective constituent of this scavenging agent comprises diatomite, metallic sulfide, sulphite, carbonate and aluminium salt, the quality percentage composition of various compositions is respectively diatomite 30%～35%, metallic sulfide 20%～30%, sulphite 18%～23%, aluminium salt 5%～10%, carbonate 2%～27%.
2. heavy metal wastewater purificant as claimed in claim 1 is characterized in that: metallic sulfide is sulfurated lime, sodium sulphite or barium sulphide.
3. heavy metal wastewater purificant as claimed in claim 1 is characterized in that: sulphite is S-WAT, sodium bisulfite or Sodium Pyrosulfite.
4. heavy metal wastewater purificant as claimed in claim 1 is characterized in that: carbonate is lime carbonate or yellow soda ash.
5. the described heavy metal wastewater purificant of claim 1, it is characterized in that: aluminium salt is aluminum chloride or Tai-Ace S 150.
6. heavy metal wastewater purificant as claimed in claim 1 is characterized in that: each effective constituent and quality percentage composition thereof are respectively diatomite 32%, sulfurated lime 25%, S-WAT 20%, aluminum chloride 8%, lime carbonate 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101298889A CN101357798B (en) | 2007-07-31 | 2007-07-31 | Heavy metal wastewater purificant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101298889A CN101357798B (en) | 2007-07-31 | 2007-07-31 | Heavy metal wastewater purificant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101357798A CN101357798A (en) | 2009-02-04 |
| CN101357798B true CN101357798B (en) | 2010-06-09 |
Family
ID=40330416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101298889A Expired - Fee Related CN101357798B (en) | 2007-07-31 | 2007-07-31 | Heavy metal wastewater purificant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101357798B (en) |
Families Citing this family (17)
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|---|---|---|---|---|
| CN101811747A (en) * | 2010-04-01 | 2010-08-25 | 乐清市华隆环保科技工程有限公司 | Plating wastewater treatment agent |
| CN102976466A (en) * | 2012-12-11 | 2013-03-20 | 常州大学 | Compound barium remover for treating baric wastewater |
| CN103159279A (en) * | 2013-04-07 | 2013-06-19 | 桂林理工大学 | Method for recycling Zn<2+> from electrolytic zinc rinsing wastewater through utilizing calcium carbonate modified diatomite |
| CN103159278A (en) * | 2013-04-07 | 2013-06-19 | 桂林理工大学 | Method for recovering Pb<2+> from electrolytic zinc rinsing wastewater with calcium-carbonate-modified kieselguhr |
| CN103723852B (en) * | 2013-12-04 | 2015-04-08 | 刘军亮 | Sewage treatment method based on inorganic and organic heavy metal absorbents |
| CN103739117B (en) * | 2014-01-02 | 2016-01-13 | 方世雄 | A kind of electroplating sewerage deep treatment technique |
| CN103803666A (en) * | 2014-02-08 | 2014-05-21 | 江西远鑫资源循环投资开发有限公司 | Heavy metal wastewater treatment disinfectant |
| CN103937979A (en) * | 2014-04-20 | 2014-07-23 | 厦门世达膜科技有限公司 | Process for treating raffinate in hydrometallurgy by using electrocoagulation combination membrane technology |
| CN103991916A (en) * | 2014-06-12 | 2014-08-20 | 杭州一清环保工程有限公司 | Comprehensive electroplating wastewater treating agent |
| CN105948432A (en) * | 2016-06-29 | 2016-09-21 | 南安泰达工业设计有限公司 | Dichloroethylene polluted sludge treatment agent and preparation method thereof |
| CN106745385A (en) * | 2016-12-22 | 2017-05-31 | 郑州丽福爱生物技术有限公司 | A kind of Industrial Waste Water Treatments medicament and preparation method thereof |
| CN107619129A (en) * | 2017-10-30 | 2018-01-23 | 佛山市宝粤美科技有限公司 | A kind of electroplating waste processing equipment |
| CN108083411A (en) * | 2018-01-29 | 2018-05-29 | 安徽华晶微电子材料科技有限公司 | A kind of heavy metal containing wastewater treatment medicament |
| CN109226233A (en) * | 2018-08-07 | 2019-01-18 | 广西博世科环保科技股份有限公司 | Height repairs target heavy-metal contaminated soil administering method |
| CN109384277A (en) * | 2018-11-07 | 2019-02-26 | 环境保护部华南环境科学研究所 | The composite treating agent of comprehensive removal heavy metal out of electroplating wastewater |
| CN111762953A (en) * | 2020-06-18 | 2020-10-13 | 江苏肯创环境科技股份有限公司 | Wastewater pretreatment method |
| CN113072230A (en) * | 2021-03-26 | 2021-07-06 | 鹰潭市林兴建材有限公司 | Heavy metal wastewater treatment method for aluminum product production |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095446C (en) * | 1998-12-04 | 2002-12-04 | 中国科学院生态环境研究中心 | Chemical and method for treatment of waste water containing heavy metals |
-
2007
- 2007-07-31 CN CN2007101298889A patent/CN101357798B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095446C (en) * | 1998-12-04 | 2002-12-04 | 中国科学院生态环境研究中心 | Chemical and method for treatment of waste water containing heavy metals |
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| Publication number | Publication date |
|---|---|
| CN101357798A (en) | 2009-02-04 |
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