Green environment-friendly sterilizing flocculant

A green and environmentally friendly flocculant technology, applied in the fields of fungicides, flocculation/sedimentation water/sewage treatment, biocides, etc., can solve the problems of not being widely used, loss of flocculation activity, poor flocculation effect, etc. The effect of increasing economic benefits and reducing production costs

Inactive Publication Date: 2018-08-10
王建玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural polymer flocculants have the characteristics of safety, non-toxicity, easy biodegradation, no secondary pollution or waste treatment and environmental friendliness, but traditional natural polymer fl

Method used

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  • Green environment-friendly sterilizing flocculant

Examples

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Embodiment 1

[0056] Preparation of carboxymethyl starch grafted acrylamide copolymer: in parts by weight, add 2 parts of carboxymethyl starch to 70 parts of deionized water, heat to 85° C., and keep stirring under nitrogen protection for gelatinization for 1 hour. Cooling; add the initiator potassium persulfate afterwards, the initiator concentration is 5.5×10 4 mol / L; then add 9 parts of monomeric acrylamide, and the reaction time is 4 hours at 50 degrees Celsius. After the reaction is completed, the product is washed with absolute ethanol, and the product is dried under reduced pressure to constant weight.

Embodiment 2

[0058] Preparation of carboxymethyl starch grafted acrylamide copolymer: in parts by weight, add 1 part of carboxymethyl starch to 90 parts of deionized water, heat to 90°C, and continuously stir for gelatinization under nitrogen protection for 0.5h , cooling; then add the initiator potassium persulfate, the initiator concentration is 4.25 × 10 4 mol / L; then add 3 parts of monomeric acrylamide, at 45 degrees Celsius, the reaction time is 1 hour, after the reaction is completed, the product is washed with absolute ethanol, and the product is dried under reduced pressure to constant weight.

Embodiment 3

[0060] Preparation of carboxymethyl starch grafted acrylamide copolymer: in parts by weight, add 2.5 parts of carboxymethyl starch to 80 parts of deionized water, heat to 70°C, and keep stirring under nitrogen protection for 1.5 hours of gelatinization , cooling; then add the initiator potassium persulfate, the initiator concentration is 6.80×10 4mol / L; then add 5 parts of monomeric acrylamide, at 65 degrees Celsius, the reaction time is 6 hours, after the reaction, wash the product with absolute ethanol, and dry the product under reduced pressure to constant weight.

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Abstract

The invention relates to a green environment-friendly sterilizing flocculant. The green environment-friendly sterilizing flocculant is prepared from 40 to 70 parts of carboxymethyl starch grafted acrylamide copolymer, 10 to 20 parts of gas ash and chitosan compound, 1 to 10 parts of herba taraxaci extract, 1 to 10 parts of portulaca oleracea extract, 1 to 10 parts of artemisia stelleriana extract,1 to 10 parts of common sowthistle herb extract and 1 to 10 parts of chenopodium album linn. A preparation method of the green environment-friendly sterilizing flocculant comprises the steps of preparing the carboxymethyl starch grafted acrylamide copolymer; preparing the gas ash and chitosan compound; preparing a wild plant extract, mixing all the raw materials and then carrying out ball-millingand drying. The flocculant disclosed by the invention is grafted with acrylamide after modification of starch, so that the flocculation ability is enhanced; in addition, the grafted substance is compounded with the gas ash and chitosan compound and the wild plant extracts, so that the flocculation ability is greatly improved while the role of restraining and sterilizing bacteria is played in thesewage treatment process; the flocculant has the advantages of safety and no toxin or residue, low cost and easiness in promotion.

Description

technical field [0001] The invention relates to a flocculant, in particular to an environmentally friendly compound flocculant for sewage treatment. Background technique [0002] Water is the most important substance in human production and life. With the continuous development of industry, the use of water resources has also increased, but there is less than 1% of fresh water on the earth, and only 0.007% of the water can be directly used by humans. In recent years, with the rapid development of industry With the development, the problem of water pollution has become increasingly prominent. At the same time, the continuous improvement of people's material living standards has also put forward higher requirements for water quality. The safety and security of water sources has long attracted the attention of the environmental protection departments of governments in various countries, and has adopted a series of strong safeguard measures including legislation. However, judg...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F1/50C08F251/00A01N65/12A01P1/00A01P3/00
CPCA01N65/00A01N65/12C02F1/50C02F1/5263C02F1/56C08F251/00A01N65/08
Inventor 王建玲
Owner 王建玲
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