CN104743643A - Novel compound flocculant and application thereof - Google Patents
Novel compound flocculant and application thereof Download PDFInfo
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- CN104743643A CN104743643A CN201510143721.2A CN201510143721A CN104743643A CN 104743643 A CN104743643 A CN 104743643A CN 201510143721 A CN201510143721 A CN 201510143721A CN 104743643 A CN104743643 A CN 104743643A
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Abstract
The invention discloses a novel compound flocculant and application thereof. The compound flocculant comprises the following components in parts by weight: 20-30 parts of powdered carbon, 30-40 parts of iron powder, 5-10 parts of zinc powder, 5-10 parts of copper powder, 5-10 parts of diatomite, 5-10 parts of aluminium polychlorid, 5-10 parts of fly ash and 10-20 parts of polyacrylamide. The input amount of the components is controlled as 30-50mg/L. Compared with the existing technology, the novel compound flocculant has the obvious characteristics that unnumbered micro electrolysis can be constituted by the iron powder and the powdered carbon and the products Fe<2+> and Fe<3+> of the reaction are good flocculants, so that very good flocculation synergistic effect is realized between the polyacrylamide and Fe<2+> as well as Fe<3+>; thus, double-removal of the suspended substances and the high CODcr is realized.
Description
Technical field
The present invention relates to flocculation agent technical field in wastewater treatment, particularly relate to the composite flocculant that high organic pollutant CODcr and high suspended matter SS in matching stain, paper pulp papermaking and chemical pharmacy trade effluent is removed in a kind of application.
Background technology
Along with matching stain, paper pulp papermaking and chemical pharmacy industrial boom, kind and the quantity of its waste water rapidly increase, also increasingly extensive and serious to the pollution of water body, threaten the health and safety of the mankind.Because its composition of trade effluent of matching stain, paper pulp papermaking and chemical pharmacy industry is more complicated, some is also toxic, and its process is more difficult also more important than municipal sewage treatment.
Add a kind of effective ways that flocculation agent is also process high-concentration industrial-water.Flocculation agent can be divided into inorganic flocculating agent and organic floculant two class according to its Chemical Composition.General inorganic flocculating agent can be divided into low molecule flocculation agent and polymeric flocculant again, low molecule flocculation agent is as the aluminium such as Tai-Ace S 150, aluminum chloride salt system and the molysite such as iron(ic) chloride and ferric sulfate system, low molecule flocculation agent cost is lower, but it has the shortcoming such as flocculating effect difference, medicine consumption height; And polymeric flocculant is as aluminum chloride hydrocarbon complex (PAC), polyaluminium sulfate, bodied ferric sulfate etc., overcome the low shortcoming of processing efficiency that low molecule flocculation agent exists, but the problem such as its cost is higher.Organic floculant is generally high molecular polymer, and as polyacrylamide flocculant etc., polyacrylamide flocculant is divided into nonionic, negatively charged ion, positively charged ion and amphoteric Four types.Polyacrylamide is because have unique novelty. and good water solubility, flocculating effect is good, so application is widely.
Current patented technology mostly biases toward the of flocculation own, and the such as patent No. is CN200810022485, CN201310204687 etc., is all some component based on changing flocculation agent, and then improves the efficiency of flocculation agent.Also the removal improving CODcr attempted by some flocculation agent, and the Chinese patent literature being CN201110222749 as the patent No. discloses flocculating agent composition.Invent in the flocculating agent composition that provides and with the addition of ferrate, flocculating effect can not only be promoted, reduce flocculation cost, and make flocculation agent have sterilization, except algae function, there is certain CODcr and remove.So now market is starved of one and not only can takes into account flocculation sediment, and there is the composite flocculant that CODcr efficiently removes.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of composite flocculant composition, when flocculating agent composition provided by the invention is used for matching stain, paper pulp papermaking and chemical pharmacy trade effluent, not only amount of consumption of drugs is few, flocculating effect good, and possesses efficient CODcr removal function.
For achieving the above object, this invention takes following technical scheme:
A kind of new type compound flocculation agent, with parts by weight, composed of the following components:
Powder carbon: 20 ~ 30, iron powder: 30 ~ 40, zinc powder: 5 ~ 10,
Copper powder: 5 ~ 10, diatomite: 5 ~ 10, polymerize aluminum chloride: 5 ~ 10,
Flyash: 5 ~ 10, polyacrylamide: 10 ~ 20.
Described composite flocculant preparation technology is: by proportioning, after the mixing of each component, dispersed with stirring evenly after finished product.
Composite flocculant of the present invention can be used for the matching stain of high organic pollutant CODcr and high suspended matter SS, paper pulp papermaking and chemical pharmacy Industrial Wastewater Treatment, and controlling throwing amount is 30 ~ 50mg/L.
Principle of the present invention is: when iron powder and powder carbon being immersed in matching stain, paper pulp papermaking and chemical pharmacy trade effluent, due to the difference in Electrode Potential between iron and carbon, can form numerous micro-galvanic cell in waste water.These trickle batteries become anode with the iron that current potential is low, and the carbon that current potential is high does negative electrode, in containing the electrolytical aqueous solution, electrochemical reaction occurs.The result of reaction is that iron is corroded the iron ion becoming divalence and enters solution.Because iron ion has coagulation, there is a natural attraction between the sexes for particulate with faint negative charge in it and pollutent, forms more stable throw out (being also iron mud) and remove, in order to increase potential difference, promote the release of iron ion, in iron-carbon bed, add certain proportion copper powder.The iron that wherein current potential is low becomes anode, and the carbon that current potential is high becomes negative electrode, in acid condition electrochemical reaction occurs, and its reaction process is as follows:
Anode (Fe): Fe-2e → Fe2+,
Negative electrode (C): 2H++2e → 2 [H] → H2,
In reaction, the Fe2+ of the status nascendi of generation and atom H, they have high chemically reactive, can change many organic structure and characteristics in waste water, make the effects such as organism generation chain rupture, open loop.
The OH-generated in reaction is the reason that water outlet pH value raises, and by Fe
2+the Fe that oxidation generates
3+hydrolysis generates the large Fe (OH) of the polymerization degree gradually
3colloid flocculation agent, the polyacrylamide simultaneously in composite flocculant effectively can promote the pollutent in absorption, cohesion water, thus strengthens the decontamination effect improving to trade effluent.
Compared with prior art, distinguishing feature of the present invention is that not only iron powder and powder carbon can form countless light electrolysis, and the product Fe after reaction generation
2+and Fe
3+itself be also a kind of good flocculation agent, play well to flocculate acting synergistically with polyacrylamide, reach the dual removal of high organic pollutant CODcr and high suspended matter SS.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of new type compound flocculation agent, with parts by weight, composed of the following components:
Powder carbon: 20, iron powder: 40, zinc powder: 5,
Copper powder: 5, diatomite: 5, polymerize aluminum chloride: 5,
Flyash: 5, polyacrylamide: 20.
Added in proportion by above-mentioned composite flocculant in matching stain, paper pulp papermaking and chemical pharmacy trade effluent, then mix standing 35 ~ 45min, composite flocculant dosage is 30 ~ 50mg/L waste water.
Get above-mentioned reacted clear liquid and carry out chemical oxygen demand COD cr and ss suspended solid mensuration, obtain following result: CODcr clearance is greater than 95%, SS clearance and is greater than 85%.
Embodiment 2
A kind of new type compound flocculation agent, with parts by weight, composed of the following components:
Powder carbon: 25, iron powder: 35, zinc powder: 8,
Copper powder: 8, diatomite: 8, polymerize aluminum chloride: 8,
Flyash: 8, polyacrylamide: 15.
Added in proportion by above-mentioned composite flocculant in matching stain, paper pulp papermaking and chemical pharmacy trade effluent, then mix standing 35 ~ 45min, composite flocculant dosage is 30 ~ 50mg/L waste water.
Get above-mentioned reacted clear liquid and carry out chemical oxygen demand COD cr and ss suspended solid mensuration, obtain following result: CODcr clearance is greater than 90%, SS clearance and is greater than 90%.
Embodiment 3
A kind of new type compound flocculation agent, with parts by weight, composed of the following components:
Powder carbon: 30, iron powder: 30, zinc powder: 10,
Copper powder: 10, diatomite: 10, polymerize aluminum chloride: 10,
Flyash: 10, polyacrylamide: 10.
Added in proportion by above-mentioned composite flocculant in matching stain, paper pulp papermaking and chemical pharmacy trade effluent, then mix standing 35 ~ 45min, composite flocculant dosage is 30 ~ 50mg/L waste water.
Get above-mentioned reacted clear liquid and carry out chemical oxygen demand COD cr and ss suspended solid mensuration, obtain following result: CODcr clearance is greater than 85%, SS clearance and is greater than 95%.
In above-described embodiment, described composite flocculant preparation technology is: by proportioning, after the mixing of each component, dispersed with stirring evenly after finished product.
Common commercially available prod is all for the preparation of the raw material of composite flocculation agent in above-described embodiment.
Claims (5)
1. a new type compound flocculation agent, is characterized in that, with parts by weight, composed of the following components:
Powder carbon: 20 ~ 30, iron powder: 30 ~ 40, zinc powder: 5 ~ 10,
Copper powder: 5 ~ 10, diatomite: 5 ~ 10, polymerize aluminum chloride: 5 ~ 10,
Flyash: 5 ~ 10, polyacrylamide: 10 ~ 20.
2. a kind of new type compound flocculation agent according to claim 1, is characterized in that, with parts by weight, composed of the following components:
Powder carbon: 20, iron powder: 40, zinc powder: 5,
Copper powder: 5, diatomite: 5, polymerize aluminum chloride: 5,
Flyash: 5, polyacrylamide: 20.
3. a kind of new type compound flocculation agent according to claim 1, is characterized in that, with parts by weight, composed of the following components:
Powder carbon: 25, iron powder: 35, zinc powder: 8,
Copper powder: 8, diatomite: 8, polymerize aluminum chloride: 8,
Flyash: 8, polyacrylamide: 15.
4. a kind of new type compound flocculation agent according to claim 1, is characterized in that, with parts by weight, composed of the following components:
Powder carbon: 30, iron powder: 30, zinc powder: 10,
Copper powder: 10, diatomite: 10, polymerize aluminum chloride: 10,
Flyash: 10, polyacrylamide: 10.
5. new type compound flocculation agent according to claim 1 is for the treatment of organic pollutant CODcr and high suspended matter SS high in matching stain, paper pulp papermaking and chemical pharmacy trade effluent.
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| CN201510143721.2A CN104743643A (en) | 2015-03-30 | 2015-03-30 | Novel compound flocculant and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000619A (en) * | 2015-07-20 | 2015-10-28 | 湖州吉昌丝绸有限公司 | Novel composite decolorant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955280A (en) * | 2010-08-13 | 2011-01-26 | 南京赛佳环保实业有限公司 | Technology for processing high-concentration organic wastewater in composite electrochemical method |
| CN102381789A (en) * | 2011-10-08 | 2012-03-21 | 昆明理工大学 | Method for treating smelting wastewater containing heavy metals |
| CN103755088A (en) * | 2014-01-23 | 2014-04-30 | 绍兴奇彩化工有限公司 | Treatment method of acid dye mother liquor wastewater |
-
2015
- 2015-03-30 CN CN201510143721.2A patent/CN104743643A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955280A (en) * | 2010-08-13 | 2011-01-26 | 南京赛佳环保实业有限公司 | Technology for processing high-concentration organic wastewater in composite electrochemical method |
| CN102381789A (en) * | 2011-10-08 | 2012-03-21 | 昆明理工大学 | Method for treating smelting wastewater containing heavy metals |
| CN103755088A (en) * | 2014-01-23 | 2014-04-30 | 绍兴奇彩化工有限公司 | Treatment method of acid dye mother liquor wastewater |
Non-Patent Citations (2)
| Title |
|---|
| 杨慧芬等: "《环境工程材料》", 31 May 2008, article "硅藻土在环境工程中的应用", pages: 111 * |
| 马正慧等: "铁碳微电解+混凝法预处理高盐染料废水的研究", 《兰州交通大学学报》, vol. 30, no. 6, 31 December 2011 (2011-12-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000619A (en) * | 2015-07-20 | 2015-10-28 | 湖州吉昌丝绸有限公司 | Novel composite decolorant |
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Application publication date: 20150701 |