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Efficient environment-friendly flocculant for treatment of black-odor river

A technology of coagulant and black and odorous river, applied in the field of coagulant for the treatment of black and odorous river, can solve the problems of difficult establishment of ecosystem, black and odorous water, poor water control effect, etc., achieving strong continuous self-purification ability and little impact on pH value , the effect of improving self-purification ability

Active Publication Date: 2014-07-16
张爱均
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems that the various technologies currently used are not effective in water control, the second release of sediment pollutants will cause the water to become black and smelly again, and the problems that the ecological system is difficult to establish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A novel high-efficiency environment-friendly coagulant for controlling black and odorous rivers, comprising the following composition by weight percentage:

[0015] Polyaluminum chloride: 20%; quicklime: 10%; sodium carbonate: 10%; diatomaceous earth: 30%; chitosan: 1%; carboxymethyl starch CMS: 2%; neutral protease: 2%; cement : 25%. in

[0016] Polyaluminum chloride: the content of aluminum oxide is greater than 27%;

[0017] Quicklime: use industrial grade quicklime, content ≥ 90%;

[0018] Sodium carbonate: use industrial grade sodium carbonate, content ≥ 99%;

[0019] Diatomaceous earth: SiO 2 Content ≥ 80%, Fe 2 o 3 Content≤1.5%;

[0020] Chitosan: content ≥ 95%, white powder;

[0021] Carboxymethyl starch: density 0.4g / cm 3 , content ≥ 97%;

[0022] Neutral protease: enzyme activity 100,000 u / g, active substance content ≥ 99%, food grade;

[0023] Cement: high alumina cement, grade one, CA-50,525.

[0024] When in use, prepare and mix uniformly accord...

Embodiment 2

[0026] Identical with the raw material used in embodiment 1, only the composition of proportion changes, specifically:

[0027] Polyaluminum chloride: 60%; quicklime: 5%; sodium carbonate: 5%; diatomaceous earth: 10%; chitosan: 2%; carboxymethyl starch CMS: 5%; neutral protease: %; cement: 10%.

[0028] When in use, prepare and mix uniformly according to the ratio of each component in the above-mentioned coagulant, and then add a new type of high-efficiency and environmentally friendly coagulant to treat black and odorous river water. 15min; finally, the stirred river water was left to stand for 1 hour, and then it was detected that the river water after coagulation and sedimentation was clear and transparent, without odor, and the pH value of the black and smelly river before treatment was 7.0; the pH value of the river water after treatment was 7.1.

Embodiment 3

[0030] Identical with the raw material used in embodiment 1, only the composition of proportion changes, specifically:

[0031] Polyaluminum chloride: 40%; quicklime: 8%; sodium carbonate: 8%; diatomaceous earth: 20%; chitosan: 3%; carboxymethyl starch CMS: 4%; neutral protease: 1%; cement : 16%.

[0032] When in use, prepare and mix uniformly according to the ratio of each component in the above-mentioned coagulant, and then add a new type of high-efficiency and environmentally friendly coagulant to treat black and odorous river water. The amount of coagulant added is 4% of the dry weight of sludge, and stirred 10min; finally, the stirred river water was left to stand for 1 hour, and then it was detected that the river water after coagulation and sedimentation was clear and transparent, without odor, and the pH value of the black and smelly river before treatment was 7.0; the pH value of the river water after treatment was 7.1.

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Abstract

The invention discloses a novel efficient environment-friendly flocculant for the treatment of black-odor river. The flocculant comprises the following components in percentage by weight: 20-60% of PAC (Polyaluminium Chloride), 5-10% of unslaked lime, 5-10% of sodium carbonate, 10-30% of diatomaceous earth, 1-3% of chitosan, 2-5% of carboxymethyl starch (CMS), 1-3% of neutral protease and 10-25% of cement. the components of the flocculant disclosed by the invention are abundant, inexpensive, economical and environment-friendly; all the components are used together, the addition of the flocculant is small, the flocculant hardly affects the pH of the water and the original performances of the sludge in water are not changed; partially active heavy metals are cured, which is beneficial to increase of the activity of the sludge so that the self cleaning capacity of water bodies is greatly improved. The multiple functions such as adsorption, aggregation, chelation, curing and catalytic degradation are integrated into a whole to achieve a good treatment effect. The flocculated and settled water body is clear, transparent and odorless.

Description

technical field [0001] The invention relates to a coagulant, in particular to a coagulant used for harnessing black and odorous rivers. Background technique [0002] With the rapid development of economy and the acceleration of urbanization process, the problem of water pollution in my country is becoming more and more serious. The massive discharge of industrial wastewater and domestic sewage has become a common pollution problem faced by many cities in our country, seriously affecting the lives of residents, the image of the city and the ecological environment. At present, the technologies used at home and abroad to control black and odorous rivers can be mainly divided into three categories: physical, chemical and biological-ecological methods. Physical methods mainly include filtration, sedimentation, artificial aeration, etc.; chemical methods mainly include enhanced flocculation, chemical oxidation, and chemical precipitation; biological methods mainly include microbi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 张爱均
Owner 张爱均
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