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Plant extract composite biological flocculant and preparation method thereof

A technology of biological flocculants and plant extracts, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sewage treatment, etc., can solve problems such as inability to inhibit excessive growth of green algae, inability to sterilize and inhibit bacteria, etc. , to achieve improved effect, good effect, good antibacterial and bactericidal effect

Inactive Publication Date: 2020-03-20
青岛大首席科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a plant extract composite biological flocculant, which has the advantages of good bactericidal and antibacterial effects and can inhibit the excessive growth of green algae, and solves the problem that the existing flocculants cannot perform good bactericidal and antibacterial effects on sewage At the same time, it cannot inhibit the excessive growth of green algae in sewage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of a plant extract composite biological flocculant, the specific preparation steps are as follows:

[0026] A: Preparation of carboxymethyl starch grafted acrylamide copolymer

[0027] In parts by weight, add 1-2.5 parts of carboxymethyl starch into 60-90 parts of deionized water, heat to 70-90° C., stir continuously under nitrogen protection for gelatinization for 0.5-1.5 h, and cool; Then add the initiator potassium persulfate, so that the initiator concentration is 4.25X10*-6.80X10*mol / L; then add 2-10 parts of monomer acrylamide, at 45-65 degrees Celsius, the reaction time is 1-6 hour, after the end of the reaction, wash the product with absolute ethanol, and dry the product under reduced pressure to constant weight to obtain final product;

[0028] B: Clean and dry fresh dandelion, purslane, white wormwood, bitter cabbage and gray cabbage, dry and crush them, then add them to water, soak them in a hot water bath at 90°C for 4 hours, and then c...

Embodiment 1

[0033] Record by weight: Weigh 10 parts of chitosan, 50 parts of polyaluminum ferric chloride, 5 parts of initiator, 40 parts of carboxymethyl starch grafted acrylamide copolymer, 4 parts of dandelion extract, 4 parts of purslane extract , Artemisia annua Extract 4, Bitter Herb Extract 4, Ash Vegetable Extract 4, Olive Leaf Extract 15 and Chlorella Extract 15;

[0034] In parts by weight, add 1-2.5 parts of carboxymethyl starch into 60-90 parts of deionized water, heat to 70-90° C., stir continuously under nitrogen protection for gelatinization for 0.5-1.5 h, and cool; Then add the initiator potassium persulfate, so that the initiator concentration is 4.25X10*-6.80X10*mol / L; then add 2-10 parts of monomer acrylamide, at 45-65 degrees Celsius, the reaction time is 1-6 Hours, after the reaction is over, wash the product with absolute ethanol, and dry the product under reduced pressure to constant weight.

[0035] Chlorella extract refers to mixing green algae with a citric acid...

Embodiment 2

[0043] Record by weight: Weigh 15 parts of chitosan, 55 parts of polyaluminum ferric chloride, 7 parts of initiator, 50 parts of carboxymethyl starch grafted acrylamide copolymer, 6 parts of dandelion extract, 5 parts of purslane extract , Artemisia annua Extract 5, Bitter Herb Extract 7, Ash Vegetable Extract 8, Olive Leaf Extract 20 and Chlorella Extract 15;

[0044] In parts by weight, add 1-2.5 parts of carboxymethyl starch into 60-90 parts of deionized water, heat to 70-90° C., stir continuously under nitrogen protection for gelatinization for 0.5-1.5 h, and cool; Then add the initiator potassium persulfate, so that the initiator concentration is 4.25X10*-6.80X10*mol / L; then add 2-10 parts of monomer acrylamide, at 45-65 degrees Celsius, the reaction time is 1-6 Hours, after the reaction is over, wash the product with absolute ethanol, and dry the product under reduced pressure to constant weight.

[0045] Chlorella extract refers to mixing green algae with a citric acid...

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Abstract

The invention discloses a plant extract composite biological flocculant and a preparation method thereof. The plant extract composite biological flocculant is prepared from the following raw materialsin parts by weight: 100 parts of mixed plant extract, 10 to 20 parts of chitosan, 50 to 60 parts of polyaluminum ferric chloride, 5 to 10 parts of an initiator and 40 to 70 parts of a carboxymethyl starch-grafted acrylamide copolymer. According to the invention, the flocculant is prepared from plants having flocculation effects and selected through considerable researches by using a special processing technology, and the prepared flocculant can be well inhibit and kill bacteria; green alga extract contains green alga polysaccharides which are rich in rhamnose, uronic acid, carboxyl groups, hydroxyl groups and other group, so the flocculant has good flocculation performance and can well inhibit the growth of green algae in sewage; olive leaf extract has dual flocculating and antibacterialeffects, so the flocculant has better sewage treatment effect; and meanwhile, by using polyaluminum ferric chloride, the effect of the flocculant can be effectively improved, the shelf life of the flocculant is prolonged, and the use amount of the flocculant is reduced.

Description

technical field [0001] The invention relates to the technical field of flocculants, in particular to a plant extract composite biological flocculant and a preparation method thereof. Background technique [0002] According to its chemical composition, flocculants can be generally divided into two types: inorganic flocculants and organic flocculants. Inorganic flocculants include inorganic coagulants and inorganic polymer flocculants; organic flocculants include synthetic organic polymer flocculants, natural organic polymer flocculants and microbial flocculants. [0003] With the continuous development and progress of society, people have more and more ways to treat sewage. In order to better clean up the impurities in sewage, flocculants are usually used to facilitate better precipitation of impurities in sewage. However, the existing The performance of the flocculant is relatively simple, and it cannot sterilize the sewage well, and after the sewage is discharged, it canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56C02F1/50
CPCC02F1/50C02F1/52C02F1/5236C02F1/5263C02F1/54C02F1/56
Inventor 李成
Owner 青岛大首席科技有限公司
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