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Flocculating agent and preparation method thereof

A flocculant and initiator technology, which is applied in the field of flocculant for water treatment and its preparation, can solve the problems of high price, poor flocculation effect, and less dosage, and achieve the effect of low price, fast settling speed, and less dosage

Active Publication Date: 2018-08-17
刘鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects in the prior art, the present invention provides a flocculant and a preparation method thereof, the preparation method is simple and easy, the raw materials are easy to obtain, the price is low, the requirements for reaction conditions and equipment are not high, and it is suitable for large-scale production; The flocculant prepared by the preparation method overcomes the more or less expensive, poor flocculation effect, and serious environmental pollution problems of traditional flocculants in the prior art, and has remarkable flocculation effect, fast settling speed, and good effluent quality. Less dosage, moderate and stable characteristic viscosity, wide application range, economical, green and environmental protection, and has the advantages of sterilization, algae removal and other functions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of flocculant, comprising the steps of:

[0028] 1) Preparation of polymeric aminopropanol ascorbyl phosphate: 10 g of aminopropanol ascorbyl phosphate was dissolved in 50 g of ether, and 15 g of 4-vinylbenzyl chloride was added thereto, and stirred and reacted at 30° C. for 6 hours; then spin Ether was removed by evaporation, and the crude product was washed 4 times with ether, and then the ether was removed by rotary evaporation to obtain polymerized aminopropanol ascorbyl phosphate;

[0029] 2) Preparation of the polymer: 5 g of polymerized aminopropanol ascorbyl phosphate, 10 g of 2-(9H-carbazol-9-yl) ethyl acryloyl ester, ethoxylated trihydroxy Dissolve 10g of methylpropane triacrylate, 5g of 1-(acryloyloxy)-3-(methacryloyloxy)-2-propanol in 50g of dimethyl sulfoxide, and then add azobis 0.1 g of isobutyronitrile was stirred and polymerized at 60°C for 1 hour under a nitrogen atmosphere, then precipitated in ethanol, washed 5 times with ethyl ...

Embodiment 2

[0033] A preparation method of flocculant, comprising the steps of:

[0034] 1) Preparation of polymerized aminopropanol ascorbyl phosphate: 10 g of aminopropanol ascorbyl phosphate was dissolved in 65 g of ethyl acetate, 15 g of 4-vinylbenzyl chloride was added thereto, and the reaction was stirred at 33° C. for 6.5 hours; Then the ethyl acetate was removed by rotary evaporation, and the crude product was washed 5 times with ether, and then the ether was removed by rotary evaporation to obtain polymerized aminopropanol ascorbyl phosphate;

[0035] 2) Preparation of the polymer: 5 g of polymerized aminopropanol ascorbyl phosphate, 10 g of 2-(9H-carbazol-9-yl) ethyl acryloyl ester, ethoxylated trihydroxy Dissolve 10g of methyl propane triacrylate, 5g of 1-(acryloyloxy)-3-(methacryloyloxy)-2-propanol in 65g of N,N-dimethylformamide, and then add Add 0.15 g of azobisisoheptanonitrile, stir the polymerization reaction at 63°C for 1.5 hours under a neon atmosphere, then precipitat...

Embodiment 3

[0039] A preparation method of flocculant, comprising the steps of:

[0040]1) Preparation of polymeric aminopropanol ascorbyl phosphate: dissolve 10 g of aminopropanol ascorbyl phosphate in 75 g of acetone, and add 15 g of 4-vinylbenzyl chloride therein, and stir and react at 35° C. for 7 hours; then spin Acetone was removed by evaporation, and the crude product was washed 6 times with ether, and then the ether was removed by rotary evaporation to obtain polymerized aminopropanol ascorbyl phosphate;

[0041] 2) Preparation of the polymer: 5 g of polymerized aminopropanol ascorbyl phosphate, 10 g of 2-(9H-carbazol-9-yl) ethyl acryloyl ester, ethoxylated trihydroxy Dissolve 10g of methylpropane triacrylate, 5g of 1-(acryloyloxy)-3-(methacryloyloxy)-2-propanol in 75g of N-methylpyrrolidone, and then add azo Diisobutyronitrile 0.18g, stirred and polymerized at 66°C for 2 hours under a helium atmosphere, then precipitated in ethanol, washed the product 6 times with ethyl acetate,...

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Abstract

The invention discloses a preparation method of a flocculating agent. The preparation method includes the steps of firstly, preparing polymeric-form aminopropyl ascorbyl phosphate; secondly, preparingthe copolymer of the polymeric-form aminopropyl ascorbyl phosphate, 2-(9H-carbazole-9-yl)ethyl acrylate, ethoxylated trimethylolpropane triacrylate and 1-( acryloyloxy)-3-(methacryloyloxy)-2-propanol; thirdly, allowing the copolymer to have ion exchange with sodium sulfobutylether-beta-cyclodextrin. The invention further discloses the flocculating agent prepared by the method. The prepared flocculating agent is evident in flocculating effect, fast in settling, good in discharged-water quality, low in use amount, moderate in intrinsic viscosity, stable, wide in application range, economical, green, environmentally friendly and capable of achieving functions such as sterilizing and alga removing.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a flocculant for water treatment and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's social economy and the rapid increase of population density, the sewage treatment capacity of urban sewage treatment plants in my country is increasing day by day. Conventional sewage treatment methods include three-level treatment such as physicochemical, biological and advanced treatment. Physicochemical treatment process, namely coagulation and sedimentation is one of the most important treatment units in wastewater treatment. The coagulation process can remove turbidity and pollution, and reduce the pollution load of subsequent sewage treatment. Flocculants are necessary reagents to achieve solid-liquid separation in the flocculation process, and are the key factor determining the effect of coagulation treatment,...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F1/50C08F275/00C08F220/34C08F222/20C08F220/20
CPCC02F1/50C02F1/56C02F1/285C08F220/34C08F222/10A01N57/10A01N61/00C02F2303/04C08F275/00C08F222/103
Inventor 胡桂枝
Owner 刘鹏
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