Preparation method of granular sewage purifying agent

A kind of sewage purifying agent, granular technology, applied in the field of preparation of granular sewage purifying agent, can solve the problems of low adsorption capacity, poor adsorption effect, long purification time, etc., to achieve strong adsorption capacity, improve strength, high porosity Effect

Inactive Publication Date: 2016-09-07
CHANGSHA XIAORU INFORMATION TECH CO LTD
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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 granular sewage purifying agent to solve the technical problems of poor adsorption effect, low adsorption capacity, long purification time and low efficiency of sewage purifying agent in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of granular sewage purifying agent, comprising the following steps:

[0028] Step 1: Mix formaldehyde, hydroquinone, sepiolite powder, halloysite nanotubes, nanocrystalline cellulose, polyvinylpyrrolidone and water at a mass ratio of 1.5:3:0.4:0.2:1:0.5:100, and stir evenly Finally obtain mixed solution A, under stirring condition, the sodium hydroxide solution that concentration is 1mol / L is added dropwise in mixed solution A until the pH value of mixed solution A is 7-8 at the rate of addition of 20mL / min; After reacting at ℃ for 32h, Sol A was obtained.

[0029] 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. pumice powder.

[0030] Step 2: Mix butyl titanate and absolute ethanol at a mass ratio of 1:40 to obtain a mixed solution B; mix 3 mol / L hydro...

Embodiment 2

[0035] A preparation method of granular sewage purifying agent, comprising the following steps:

[0036] Step 1: Mix formaldehyde, hydroquinone, sepiolite powder, halloysite nanotubes, nanocrystalline cellulose, polyvinylpyrrolidone and water at a mass ratio of 1:3:0.3:0.1:0.5:0.4:100, and stir evenly Obtain mixed solution A afterward, under agitation, concentration is that the sodium hydroxide solution of 1mol / L is added dropwise in mixed solution A until the pH value of mixed solution A is 7-8 with the rate of addition of 15mL / min; Then at 55 After reacting at ℃ for 8h, Sol A was obtained.

[0037] 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 halloysite tubes. pumice powder.

[0038] Step 2: Mix butyl titanate and absolute ethanol at a mass ratio of 1:30 to obtain a mixed solution B; mix 3...

Embodiment 3

[0043] A preparation method of granular sewage purifying agent, comprising the following steps:

[0044] Step 1: Mix formaldehyde, hydroquinone, sepiolite powder, nano halloysite tubes, nanocrystalline cellulose, polyvinylpyrrolidone and water at a mass ratio of 2:3:0.5:0.3:1.5:0.6:100, and stir evenly Finally, mixed solution A is obtained, and under stirring conditions, the sodium hydroxide solution with a concentration of 1mol / L is added dropwise to mixed solution A at a rate of 25mL / min until the pH value of mixed solution A is 7-8; then at 65 After reacting at ℃ for 16h, Sol A was obtained.

[0045] 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 powder.

[0046] Step 2: Mix butyl titanate and absolute ethanol at a mass ratio of 1:50 to obtain a mixed solution B; mix 3 ...

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Abstract

The invention provides a preparation method of a granular sewage purifying agent. The preparation method comprises the steps that 1, formaldehyde, dihydroxybenzene, sepiolite powder, nano-sized halloysite tubes, nanocrystalline cellulose, polyvinylpyrrolidone and water are mixed to obtain a mixed solution A, a sodium hydroxide solution is dropwise added into the mixed solution A, and reacting is conducted to obtain sol A; 2, butyl titanate and absolute ethyl alcohol are mixed to obtain a mixed solution B, a hydrochloric acid solution and absolute ethyl alcohol are mixed with water to obtain a mixed solution C, the mixed solution C is dropwise added into the mixed solution B, and reacting is conducted to obtain sol B; 3, the sol A, the sol B and phenoxy resin are mixed to be uniform to obtain mixed sol, and the mixed sol is aged and then subjected to solvent exchange to obtain mixed gel; 4, drying is conducted by adopting a supercritical fluid, smashing is conducted until the grain size is in a millimeter level, and then the granular sewage purifying agent is obtained. The granular sewage purifying agent prepared through the method is good in adsorption effect, high in adsorption capacity, short in purifying time and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to a preparation method of a granular 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 whose authorized announcem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
CPCB01J20/06B01J20/12B01J20/20B01J20/24B01J20/28047C02F1/288
Inventor 不公告发明人
Owner CHANGSHA XIAORU INFORMATION TECH CO LTD
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