CN1195648A - Sewage treatment coagulant containing aluminium salt and flyash and method for treating sewage of paper mill - Google Patents
Sewage treatment coagulant containing aluminium salt and flyash and method for treating sewage of paper mill Download PDFInfo
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- CN1195648A CN1195648A CN97103899A CN97103899A CN1195648A CN 1195648 A CN1195648 A CN 1195648A CN 97103899 A CN97103899 A CN 97103899A CN 97103899 A CN97103899 A CN 97103899A CN 1195648 A CN1195648 A CN 1195648A
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- sewage
- flyash
- coagulating agent
- aluminium salt
- aluminium
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Abstract
The present invention relates to a coagulating agent containing aluminium salt and fly-ash and a paper-mill sewage cleaning treatment method by using said coagulating agent. Said coagulating agent is made up by mixing aluminium salt (optimum is aluminium polychlorid or basic aluminium chloride) and fly-ash according to the mixing ratio of 1 : 2-5. Its use method is as follows: the coagulating agent is directly placed in the sewage, they are fully mixed, coagulated, settled and filtered so as to obtain clear water. Said invented coagulating agent possesses the advantages of low cost, rapid settling speed, small sludge volume and easy implement.
Description
To be that invention is a kind of contain aluminium salt and flyash making coagulating agent in the present invention, and use the method for this coagulating agent purifying treatment papermaking sewage.Belong to sewage treatment area.
Can produce the sewage that contains high concentration suspended matter and organic substance in a large number in the paper process; just enter rivers and lakes as not handling; to cause serious environmental pollution; along with the tight person of outstanding talent's property of environmental pollution; country proposes requirements at the higher level to administering to pollute; develop and publish mutual environment protection control measures, the paper mill faces the work that sewage effluent is handled.Existing sewage water treatment method is two kinds of air supporting method and the precipitator method.Air supporting method operational management complexity, operation inconvenience, sludge dewatering difficulty; The precipitator method have overcome the shortcoming of air supporting method, but sedimentation speed is slow, and the mud compacting is bad, especially higher pulp washing water to concentration, and only with conventional coagulating agent, sludge settling ratio reaches (0.5-1M) more than 50%, can't reach processing requirements.
The present invention overcomes above-mentioned shortcoming exactly, provides a kind of investment little, and scrubbing is effective, and sedimentation speed is fast, efficiently conveniently disposes of sewage, and particularly is fit to handle the coagulating agent of papermaking sewage and the method for using this coagulating agent to purify waste water.
The present invention overcomes above-mentioned shortcoming exactly, provides a kind of mainly by containing disposing of sewage that aluminium salt and flyash constitutes, and particularly is fit to the coagulating agent of processing papermaking sewage and the method for using this coagulating agent to purify waste water.
The present invention overcomes above-mentioned shortcoming exactly, and a kind of main employing aluminium chlorohydroxide and the flyash coagulating agent of disposing of sewage of mixing manufacture by a certain percentage is provided, and particularly is fit to handle the coagulating agent of papermaking sewage and the method for using this coagulating agent to purify waste water.
The present invention overcomes above-mentioned shortcoming exactly, and a kind of main employing polymerize aluminum chloride and the flyash coagulating agent of disposing of sewage of mixing manufacture by a certain percentage is provided, and particularly is fit to handle the coagulating agent of papermaking sewage and the method for using this coagulating agent to purify waste water.
The present invention includes the invention of coagulating agent prescription and use this coagulating agent to handle the method invention of papermaking wastewater.Coagulating agent of the present invention mainly is to be mixed with flyash by aluminium salt to constitute; Between aluminium salt and the flyash ratio be 1: 2-5; Aluminium salt is preferably polymerize aluminum chloride or aluminium chlorohydroxide.The using method of this coagulating agent is directly to put into the coagulating agent of being made up of aluminium salt and flyash in sewage, and coagulating agent and sewage thorough mixing after the coagulation of certain hour, sedimentation, filtration, obtain clear water.
The effect of flyash has two in coagulating agent of the present invention, one is to play the effect of coagulating that helps, another is adsorption, it can be accelerated about sedimentation speed (improving 30-60%) greatly, sludge volume reduces about 20-50%, strengthen the mud compactibility, dewatering performance of sludge is good, improves wastewater treatment efficiency.Flyash is a kind of solid waste, uses flyash to turn waste into wealth, and can economize on resources again, is the coagulating agent constitutive material that valency is held concurrently.
Embodiment 1, recycled writing paper making beating waste water SS are 900 mg/litre, and the COD value is 500 mg/litre, and pH value is 6.5, is deep yellow.Directly add coagulating agent 300 mg/litre of forming by 1: 2 blended aluminium chlorohydroxide and flyash, mix sedimentation and filtration, its delivery turbidity is spent less than 4, and the COD value is 150 mg/litre.
Embodiment 2, recycled writing paper composite waste SS are 1100 mg/litre, and the COD value is 800 mg/litre, and pH value is 6.5, is deep yellow.Directly add and connect coagulating agent 500 mg/litre that 1: 4 blended aluminium chlorohydroxide and flyash are formed, mix sedimentation and filtration, its delivery turbidity is spent less than 5, and the COD value is 200 mg/litre.
Embodiment 3, recycled writing paper paper organic waste water SS are 500 mg/litre, and the COD value is 300 mg/litre, and pH value is 6.5, is light yellow.Directly add coagulating agent 100 mg/litre of forming by 1: 5 blended aluminium chlorohydroxide and flyash, mix sedimentation and filtration, its delivery turbidity is spent less than 3, and the COD value is 90 mg/litre.
Equally, select for use polymerize aluminum chloride or other aluminium salt and flyash to make coagulating agent and also can reach wastewater treatment efficiency as the foregoing description.
Coagulant of the present invention is compared with existing coagulant, and it is low that it has a cost, uses safety, purification speed fast ( Be that settling velocity is fast), the advantages such as the little and easy enforcement of sludge volume have good market prospect, will produce aobvious The Social benefit and economic benefit of work. Coagulant and this coagulant processing of use of being a kind of new formulation are made The method of paper plant sewage.
Claims (5)
1. the sewage disposal coagulant that contains aluminium salt and flyash is characterized in that aluminium salt mixes formation mutually with flyash.
2. the sewage disposal coagulant that contains aluminium salt and flyash according to claim 1, it is characterized in that between aluminium salt and the flyash ratio be 1: 2-5.
3. the sewage disposal coagulant that contains aluminium salt and flyash according to claim 1 and 2 is characterized in that aluminium salt is preferably polymerize aluminum chloride or aluminium chlorohydroxide.
4. according to claim 1 and 2 the use contains aluminium salt and flyash are handled papermaking sewage as sewage disposal coagulant method, it is characterized in that in sewage, adding the coagulating agent of forming by aluminium salt and flyash, coagulating agent and sewage thorough mixing, after the coagulation of certain hour, sedimentation, filtration, obtain clear water.
5. according to claim 3 the use contains aluminium salt and flyash are handled papermaking sewage as sewage disposal coagulant method, it is characterized in that in sewage, adding the coagulating agent of forming by aluminium salt and flyash, coagulating agent and sewage thorough mixing, after the coagulation of certain hour, sedimentation, filtration, obtain clear water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103899A CN1195648A (en) | 1997-04-09 | 1997-04-09 | Sewage treatment coagulant containing aluminium salt and flyash and method for treating sewage of paper mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103899A CN1195648A (en) | 1997-04-09 | 1997-04-09 | Sewage treatment coagulant containing aluminium salt and flyash and method for treating sewage of paper mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1195648A true CN1195648A (en) | 1998-10-14 |
Family
ID=5166969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97103899A Pending CN1195648A (en) | 1997-04-09 | 1997-04-09 | Sewage treatment coagulant containing aluminium salt and flyash and method for treating sewage of paper mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1195648A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805085A (en) * | 2010-04-13 | 2010-08-18 | 北京矿冶研究总院 | Method for treating desliming wastewater of reverse flotation of bauxite |
| CN109019806A (en) * | 2018-11-08 | 2018-12-18 | 中国能源建设集团湖南省电力设计院有限公司 | A kind of flyash pre-processes the purification process and its equipment of high humus raw water |
| CN110104937A (en) * | 2018-01-30 | 2019-08-09 | 辽宁德智环保技术有限公司 | Using the method for nano polyaluminium chloride and flyash processing municipal sludge |
-
1997
- 1997-04-09 CN CN97103899A patent/CN1195648A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805085A (en) * | 2010-04-13 | 2010-08-18 | 北京矿冶研究总院 | Method for treating desliming wastewater of reverse flotation of bauxite |
| CN110104937A (en) * | 2018-01-30 | 2019-08-09 | 辽宁德智环保技术有限公司 | Using the method for nano polyaluminium chloride and flyash processing municipal sludge |
| CN109019806A (en) * | 2018-11-08 | 2018-12-18 | 中国能源建设集团湖南省电力设计院有限公司 | A kind of flyash pre-processes the purification process and its equipment of high humus raw water |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |