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Preparation method of high-adsorbability ion exchange resin for sewage treatment

An ion exchange resin, high adsorption technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve a large amount of sludge and other problems, and achieve strong water retention and selectivity High, high adsorption activity effect

Inactive Publication Date: 2018-03-06
ANHUI WANDONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing conventional chemical precipitation method is widely used in the wastewater treatment process, but when the chemical precipitation method is used to treat wastewater, a large amount of sludge will be generated, which needs to be properly treated or disposed of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a highly adsorbent ion-exchange resin for sewage treatment, comprising the steps of:

[0020] S1. Swell the macroporous chloromethylated polystyrene resin into piperazine aqueous solution, add 2-aminoethanol, heat up, stir, cool down, wash, add modified guar gum and bamboo charcoal powder, stir evenly, filter, wash , drying to obtain pretreated polystyrene resin;

[0021] S2. In an ice-water bath, add thionyl chloride dropwise to the pretreated polystyrene resin, adjust the temperature, keep warm, cool down, wash, filter, send it to nitrobenzene for swelling, add trimethylamine to react, and obtain sewage treatment Highly absorbent ion exchange resin.

[0022] The modified guar gum is prepared by the following process: mix chitosan and glacial acetic acid evenly, add water and stir evenly, add polyethylene glycol, heat up and stir, heat up, add guar gum and stir to obtain the modified guar gum;

Embodiment 2

[0024] A method for preparing a highly adsorbent ion-exchange resin for sewage treatment, comprising the steps of:

[0025] S1. Send 60 parts by weight of macroporous chloromethylated polystyrene resin into 200 parts of 30 wt% piperazine aqueous solution for swelling for 8 hours, add 2 parts of 2-aminoethanol, heat up to 90°C, stir for 14 hours, and cool down , washing, adding 120 parts of modified guar gum, 5 parts of bamboo charcoal powder and stirring evenly, filtering, washing, and drying to obtain pretreated polystyrene resin;

[0026] S2. In an ice-water bath, add 4 parts of thionyl chloride dropwise to 100 parts of pretreated polystyrene resin by weight, adjust the temperature to 95°C, keep warm for 4 hours, cool down, wash, filter, and feed 280 parts of nitro Swell in benzene for 6 hours, add 13 parts of trimethylamine to react for 8 hours, and obtain high-adsorption ion-exchange resin for sewage treatment.

Embodiment 3

[0028] A method for preparing a highly adsorbent ion-exchange resin for sewage treatment, comprising the steps of:

[0029] S1. Send 70 parts by weight of macroporous chloromethylated polystyrene resin into 180 parts of 34 wt% piperazine aqueous solution to swell for 5 hours, add 4 parts of 2-aminoethanol, heat up to 70°C, stir for 20 hours, and cool down , washing, adding 100 parts of modified guar gum, 8 parts of bamboo charcoal powder and stirring evenly, filtering, washing, and drying to obtain pretreated polystyrene resin;

[0030] S2. In an ice-water bath, add 6 parts of thionyl chloride dropwise to 90 parts of pretreated polystyrene resin by weight, adjust the temperature to 85°C, keep warm for 8 hours, cool down, wash, filter, and feed 200 parts of nitro Swell in benzene for 10 hours, add 9 parts of trimethylamine and react for 12 hours to obtain a highly adsorbable ion exchange resin for sewage treatment.

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Abstract

The invention discloses a preparation method of a high-adsorbability ion exchange resin for sewage treatment. The preparation method comprises the following steps: sending macroporous chloromethylatedpolystyrene resin into a piperazine aqueous solution for swelling, adding 2-aminoethanol, carrying out heating, stirring, cooling and washing, adding modified guar gum, stirring the mixture uniformly, and carrying out filtering, washing and drying to obtain pretreated polystyrene resin; and dropwise adding thionyl chloride into the pretreated polystyrene resin in an ice water bath, adjusting thetemperature, keeping the temperature, carrying out cooling, washing and filtering, sending the mixture into nitrobenzene for swelling, and adding trimethylamine for reaction to obtain the high-adsorbability ion exchange resin with for sewage treatment. The modified guar gum is prepared by the following processes: mixing chitosan and glacial acetic acid uniformly, adding water, stirring the materials uniformly, adding polyethylene glycol, carrying out heating and stirring, then carrying out heating, adding guar gum and bamboo charcoal powder and stirring the materials to obtain the modified guar gum.

Description

technical field [0001] The invention relates to the technical field of ion exchange resins, in particular to a method for preparing a high-adsorption ion exchange resin for sewage treatment. Background technique [0002] Water resources are an important material basis for the survival and development of human society. With the development of modern industry, the problem of water pollution is becoming more and more serious, which is extremely harmful to human beings. Therefore, it has always been a key research topic for industrial circles and environmental protection departments at home and abroad to do a good job in industrial wastewater treatment technology and reduce pollution hazards. [0003] The existing conventional chemical precipitation method is widely used in the wastewater treatment process, but when the chemical precipitation method is used to treat wastewater, a large amount of sludge will be generated, which needs to be properly treated or disposed of. Ion ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42B01J20/32C02F1/28C08L25/06
CPCB01J20/20B01J20/321B01J20/3272B01J20/3274C02F1/285C08J9/42C08J2325/06C08J2405/08C08J2405/14C08J2471/02
Inventor 梅德华魏士明樊致娟
Owner ANHUI WANDONG CHEM
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