Sewage flocculant

A flocculant and sewage technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of irritating degradability of human body, large residual amount in water, general effect, etc., and achieve excellent flocculation effect, low ecological toxicity and good cost performance. Effect

Inactive Publication Date: 2015-08-19
ZHANGJIAGANG SHANMU NEW MATERIAL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two types of flocculants are generally effective in application, especially in sewage or more complex sewage, and cannot adapt to the development of modern industry and cities; and they are irritating to the human body and have poor degradability and large residuals in water, which can cause Secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of sewage flocculant, the mass parts composition of described flocculant is as follows: polyaluminum calcium chloride 12 parts, ferric chloride 5 parts, potassium aluminum sulfate 2 parts, carboxymethyl cellulose sodium 2 parts, sodium hypochlorite 1 part, polymeric 10 parts of molybdenum chloride, 10 parts of diatomaceous earth, 10 parts of zeolite, and 0.01 parts of additives.

[0021] Preferably, the polycalcium aluminum chloride is prepared by the following method: take a certain amount of alumina and calcium carbonate, mix them evenly, roast at 1100°C for 2 hours, cool to room temperature, put them into a three-necked flask after grinding, and add 6mol / l Hydrochloric acid, heating and dissolving for 3.5h, cooling and filtering, repolymerization, and drying to finally obtain polyaluminum calcium chloride; the mass ratio of the aluminum oxide to calcium carbonate is 1:1; 6ml hydrochloric acid.

[0022] Preferably, the polymolybdenum chloride is prepared by th...

Embodiment 2

[0025] A sewage flocculant, the composition of the mass parts of the flocculant is as follows: 18 parts of polyaluminum calcium chloride, 10 parts of ferric chloride, 6 parts of potassium aluminum sulfate, 5 parts of sodium carboxymethyl cellulose, 4 parts of sodium hypochlorite, polymer 20 parts of molybdenum chloride, 15 parts of diatomaceous earth, 15 parts of zeolite, and 0.03 parts of additives.

[0026] Preferably, the polycalcium aluminum chloride is prepared by the following method: take a certain amount of alumina and calcium carbonate, mix evenly, roast at 1150°C for 1.5h, cool to room temperature, put it into a three-necked flask after grinding, and add 6mol / l hydrochloric acid, heated and dissolved for 3.5h, cooled and filtered, then polymerized and dried to obtain polyaluminum calcium chloride; the mass ratio of the aluminum oxide to calcium carbonate is 2:1; the amount of hydrochloric acid per gram Aluminum oxide plus 6ml hydrochloric acid.

[0027] Preferably, ...

Embodiment 3

[0030] A kind of sewage flocculant, the composition of mass parts of described flocculant is as follows: 25 parts of polyaluminum calcium chloride, 15 parts of ferric chloride, 10 parts of potassium aluminum sulfate, 8 parts of sodium carboxymethyl cellulose, 6 parts of sodium hypochlorite, polymer 30 parts of molybdenum chloride, 20 parts of diatomaceous earth, 20 parts of zeolite, and 0.05 parts of additives.

[0031] Preferably, the polycalcium aluminum chloride is prepared by the following method: take a certain amount of alumina and calcium carbonate, mix them uniformly, roast at 1200°C for 1 hour, cool to room temperature, put them into a three-necked flask after grinding, and add 6mol / l Hydrochloric acid, heating and dissolving for 3.5h, cooling and filtering, repolymerization, and drying to finally obtain polyaluminum calcium chloride; the mass ratio of the aluminum oxide to calcium carbonate is 3:1; 6ml hydrochloric acid.

[0032] Preferably, the polymolybdenum chlor...

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PUM

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a sewage flocculant. The flocculant consists of the following components in parts by weight: 12-25 parts of poly-aluminum calcium chloride, 5-15 parts of ferric chloride, 2-10 parts of aluminum potassium sulfate, 2-8 parts of sodium carboxymethylcellulose, 1-6 parts of sodium hypochlorite, 10-30 parts of poly-molybdenum chloride, 10-20 parts of diatomite, 10-20 parts of zeolite and 0.01-0.05 part of additives. The sewage flocculant has the beneficial effects that the obtained flocculant is good in degradability, low in ecotoxicity, free of stimulation on human bodies, obvious in flocculation effect on the treatment of various complex sewage and high in cost performance for dehydration of sludge; the sewage flocculant has the characteristics of no toxicity and residue for human bodies, good flocculation effect and wide application range.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage flocculant. Background technique [0002] Flocculants are mainly divided into inorganic flocculants, organic polymer flocculants and microbial flocculants. Among them, inorganic flocculants occupy an important share in my country's current market, with an annual demand of more than 100,000 tons, mainly represented by iron salts and aluminum salts. Iron salts are corrosive and easy to form residues, which will color the treated water and cause secondary pollution. In terms of hygiene, it has been found that the accumulation of aluminum salts in the human body is directly related to today's Alzheimer's disease. Macromolecular organic flocculants, such as polyacrylamide, are not toxic in themselves, but are not easy to decompose. Long-term accumulation in nature will also cause secondary pollution. The acrylamide monomer has a strong "three-induced" effect. In 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56
Inventor 赵云龙徐丹徐凯徐再赵维达
Owner ZHANGJIAGANG SHANMU NEW MATERIAL TECH DEV
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