Preparation method for aerogel type sewage cleaning agent

A technology of sewage purifying agent and airgel, which is applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc. It can solve the problems of long purification time, poor adsorption effect, and low adsorption capacity, and achieve strong Effects of adsorption capacity, strength improvement, and high porosity

Active Publication Date: 2016-07-27
中山市高平织染水处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of an airgel-type sewage purifier to solve the technical problems of poor adsorption effect, low adsorption capacity, long purification time and low efficiency of the sewage purifier in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of an airgel type sewage purifying agent, comprising the following steps:

[0029] Step 1: Mix furfural, water-soluble phenolic resin, sepiolite powder, nano halloysite tube, nanocrystalline cellulose, polyvinylpyrrolidone and water in a mass ratio of 4:1:0.4:0.2:1:0.5:100, and stir After uniformity, the mixed solution A is obtained, and the ammonia water with a concentration of 1mol / L is added dropwise to the mixed solution A at a rate of 25mL / min under stirring conditions until the pH value of the mixed solution A is 7-8; then at 60°C After reacting for 32h, Sol A was obtained.

[0030] The solid content of the water-soluble phenolic resin is 45%, and the free phenol content is less than or equal to 10%. The sepiolite powder and nano halloysite tubes are activated: soak the sepiolite powder and nano halloysite tubes in a 4wt% hydrochloric acid solution 500 times the mass for 5 hours to obtain activated nano halloysite tubes and halloysite tubes. ...

Embodiment 2

[0036] A preparation method of an airgel type sewage purifying agent, comprising the following steps:

[0037] Step 1: Mix furfural, water-soluble phenolic resin, sepiolite powder, nano halloysite tube, nanocrystalline cellulose, polyvinylpyrrolidone and water in a mass ratio of 3:1:0.3:0.1:0.5:0.4:100, and stir After uniformity, the mixed solution A is obtained, and the ammonia water with a concentration of 1mol / L is added dropwise to the mixed solution A at a rate of 20mL / min under stirring conditions until the pH value of the mixed solution A is 7-8; then at 55°C After 8 hours of reaction, Sol A was obtained.

[0038] The solid content of the water-soluble phenolic resin is 40%, and the free phenol content is less than or equal to 10%. The sepiolite powder and nano halloysite tubes have been activated: soak the sepiolite powder and nano halloysite tubes in 4wt% hydrochloric acid solution 400 times the mass for 4 hours to obtain activated nano halloysite tubes and halloysit...

Embodiment 3

[0044] A preparation method of an airgel type sewage purifying agent, comprising the following steps:

[0045] Step 1: Mix furfural, water-soluble phenolic resin, sepiolite powder, nano halloysite tube, nanocrystalline cellulose, polyvinylpyrrolidone and water at a mass ratio of 5:1:0.5:0.3:1.5:0.6:100, and stir Mixed solution A is obtained after uniformity, and ammonia water with a concentration of 1mol / L is added dropwise to mixed solution A at a rate of 30mL / min under stirring conditions until the pH value of mixed solution A is 7-8; then at 65°C After 16 hours of reaction, Sol A was obtained.

[0046] The solid content of the water-soluble phenolic resin is 50%, and the free phenol content is less than or equal to 10%. The sepiolite powder and nano halloysite tubes are activated: soak the sepiolite powder and nano halloysite tubes in a 4wt% hydrochloric acid solution 600 times the mass for 6 hours to obtain activated nano halloysite tubes and halloysite tubes. pumice pow...

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Abstract

The invention provides a preparation method for an aerogel type sewage cleaning agent.The preparation method comprises the steps that firstly, furfural, water soluble phenol-formaldehyde resin, sea-foam stone powder, halloysite nanotubes, nano crystalline cellulose, polyvinylpyrrolidone and water are mixed, mixed liquid A is obtained, ammonium hydroxide is dropwise added into the mixed liquid A, and then sol A is obtained through a reaction; secondly, butyl titanate and absolute ethyl alcohol are mixed to obtain mixed liquid B, a hydrochloric acid solution, absolute ethyl alcohol and water are mixed to obtain mixed liquid C, the mixed liquid C is dropwise added into the mixed liquid B, and after a reaction, sol B is obtained; thirdly, the sol A, the sol B and phenoxy resin are mixed evenly to obtain mixed sol, solvent replacement is conducted after the mixed sol is aged, and mixed gel is obtained; fourthly, supercritical fluid is adopted to dry the mixed gel, and the aerogel type sewage cleaning agent is obtained.The aerogel type sewage cleaning agent prepared through the method is good in adsorption effect, high in adsorption capacity, short in cleaning time and high in efficiency, and the cleaning time is short.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to a preparation method of an airgel type sewage purifying agent. Background technique [0002] In recent decades, my country's industry has developed rapidly. However, in the past, factories and enterprises in our country did not pay attention to environmental protection, and it was common to discharge unpurified sewage directly. This year, with the continuous deterioration of the environment, my country's environmental protection department has also strictly controlled the discharge of sewage. For all enterprises and factories, the sewage must be purified, and the water quality can only be discharged after the water quality meets the national discharge standards. [0003] At present, the purification method of industrial sewage generally includes steps such as static sedimentation, flocculation and sedimentation. For example, the Chinese patent with the authorized an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28
CPCC02F1/285
Inventor 不公告发明人
Owner 中山市高平织染水处理有限公司
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