Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of ion exchange resin for sewage treatment

An ion exchange resin and sewage treatment technology, applied in ion exchange, anion exchange, ion exchange water/sewage treatment, etc., can solve the problems of insufficient specific surface area and total exchange capacity, and achieve high compressive strength, not easy to break, and exchange The effect of joint gap expansion

Inactive Publication Date: 2018-01-19
ANHUI WANDONG CHEM
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current technical problems of ion exchange resins for sewage treatment are insufficient specific surface area and total exchange capacity, which need to be solved urgently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method of ion exchange resin for sewage treatment, including the following steps:

[0016] S1. The corn starch is ball milled and enzymatically hydrolyzed. After inactivation, it is cooled to room temperature. The pH of the system is adjusted to 7.2-7.45. Butenedioic anhydride is added, and the system is heated and stirred to make it neutral. Add kaolinite, N, N- Stir the dimethylformamide, ultrasonically disperse, add polyethylene glycol to raise the temperature, stir, filter, and dry to obtain a preform;

[0017] S2. Mix the chlorine ball, preform and nitrobenzene uniformly, swell at room temperature, add ferric chloride, heat up for cross-linking reaction, filter, wash, add benzene, heat up, add methylamine to react, wash, and dry to obtain Sewage treatment ion exchange resin.

Embodiment 2

[0019] A preparation method of ion exchange resin for sewage treatment, including the following steps:

[0020] S1. Ball mill 5 parts of corn starch by weight and use high-temperature amylase to enzymolyse, then cool to room temperature after inactivation, adjust the pH of the system to 7.2-7.45, add 0.5 parts of butenedioic anhydride, heat up to 55°C and stir for 30 minutes, Adjust the system to be neutral, add 30 parts of kaolinite, 130 parts of N,N-dimethylformamide and stir for 4 minutes at a stirring speed of 450r / min, ultrasonic dispersion for 4 minutes, add 16 parts of polyethylene glycol and heat to 85°C for stirring 40min, filter and dry to obtain preform;

[0021] S2. Mix 20 parts of chlorine balls, 3 parts of preforms, and 80 parts of nitrobenzene in parts by weight, swell at room temperature for 50 minutes, add 1 part of ferric chloride, heat to 135°C for cross-linking reaction for 1 hour, filter, and dimethoxy Methane washing, adding 140 parts of benzene, heating to 7...

Embodiment 3

[0023] A preparation method of ion exchange resin for sewage treatment, including the following steps:

[0024] S1. Ball mill 12 parts of corn starch by weight and use high-temperature amylase to enzymolyse, then cool to room temperature after inactivation, adjust the pH of the system to 7.2-7.45, add 0.2 parts of butenedioic anhydride, heat to 65°C and stir for 20 minutes, Adjust the system to be neutral, add 50 parts of kaolinite, 100 parts of N,N-dimethylformamide and stir for 8min, stirring speed of 420r / min, ultrasonic dispersion for 8min, add 10 parts of polyethylene glycol and heat to 95℃ for stirring 20min, filter and dry to obtain preform;

[0025] S2. Mix 40 parts of chlorine ball, 1 part of preformed material, and 120 parts of nitrobenzene in parts by weight, swell at room temperature for 30min, add 4 parts of ferric chloride, heat up to 120℃ for crosslinking reaction for 2h, filter, and dimethoxy Methane washing, adding 100 parts of benzene, heating to 85°C, adding 1 p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of ion exchange resin for sewage treatment. The preparation method comprises the following steps: carrying out enzymolysis after carrying out ball millingon corn starch, cooling the corn starch to room temperature after inactivation, regulating the pH value of a system to be 7.2-7.45, adding anhydride maleique, carrying out heating and stirring, regulating the system to be neutral, adding kaolinite and N,N-dimethylformamide, carrying out stirring and ultrasonic dispersion, adding polyethylene glycol, and carrying out heating, stirring, filtering and drying to obtain a prefabricated material; and uniformly mixing a chloromethylated bead, the prefabricated material and nitrobenzene, swelling the mixture at room temperature, adding ferric chloride, carrying out a crosslinking reaction by heating, carrying out filtering and cleaning, adding benzene, carrying out heating, adding methylamine to react, and carrying out cleaning and drying to obtain the ion exchange resin for sewage treatment. The ion exchange resin obtained by using the preparation method is high in strength, extremely high in surface activity and high in specific surface areaand total exchange capacity and has a wide application prospect in the fields of drinking water treatment, underground water remediation and advanced treatment of urban domestic sewage.

Description

Technical field [0001] The invention relates to the technical field of ion exchange resins, in particular to a method for preparing ion exchange resins for sewage treatment. Background technique [0002] In recent years, water resources, especially groundwater resources, have been seriously polluted, causing various direct or potential harms to the ecological environment and people. The discharge of sewage has already broken the limit of the self-purification capacity of water bodies. Excessive intake of sewage can cause serious health problems, such as birth defects, diarrhea, abdominal pain, diabetes, and high blood pressure. In the sewage treatment process, the ion exchange and adsorption method is considered to be an ideal treatment method due to its simple process, fast and efficient, low cost, renewable and other advantages, and has achieved good results. However, current ion exchange resins for sewage treatment have technical problems of insufficient specific surface are...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08L25/08C08L3/02B01J41/14C02F1/42
Inventor 姚能平樊致娟将大庆
Owner ANHUI WANDONG CHEM