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Adsorbent for industrial wastewater treatment and preparation method thereof

A technology of industrial wastewater and adsorbents, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of expensive adsorbents, difficult regeneration, and low adsorption efficiency, and achieve Effects of improving alternating performance and adsorption performance, improving stability and strength, and increasing adsorption activity

Active Publication Date: 2016-11-09
ZHEJIANG HONGDIAN ENVIRONMENTAL PROTECTION & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a magnetic recyclable adsorbent and its preparation method to solve the problem that the adsorbent in the prior art is expensive, has poor adsorption effect, low adsorption efficiency, difficult regeneration and poor regeneration effect. The problem

Method used

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  • Adsorbent for industrial wastewater treatment and preparation method thereof
  • Adsorbent for industrial wastewater treatment and preparation method thereof

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Effect test

Embodiment 1

[0023] A preparation method for an adsorbent for industrial wastewater treatment, comprising the steps of:

[0024] (1) Preparation of modified composite powder: Take 15 parts of kaolin and 20 parts of sepiolite and disperse in 100 parts of toluene, and ultrasonically shake at room temperature for 1 hour, then drop 6 parts of quaternary ammonium salt tetramer Surfactant and 4 parts of cetyltrimethylammonium bromide carry out the modification reaction, the modification reaction is carried out under the water bath, the reaction temperature is 75 ℃, the reaction time is 4 hours, after the modification is completed, filter , washing, drying, and crushing to obtain a modified composite powder;

[0025] (2) Preparation of composite cross-linked adsorbent: Add the modified composite powder obtained in step (1) to 10 parts of polyvinyl alcohol and 6 parts of chitosan, mix and stir evenly, and then add the above mixture to saturated boric acid Carry out immobilized cross-linking in th...

Embodiment 2

[0028] A preparation method for an adsorbent for industrial wastewater treatment, comprising the steps of:

[0029] (1) Preparation of modified composite powder: Take 30 parts of kaolin and 40 parts of sepiolite and disperse in 180 parts of N,N-dimethylformamide, and ultrasonically shake at room temperature for 2 hours, then drop 12 parts of quaternary ammonium salt tetrameric surfactants and 8 parts of cetyltrimethylammonium bromide carry out modification reaction, and described modification reaction is carried out under water bath, and reaction temperature is 85 ℃, and reaction time is 8 After modification, filter, wash, dry, and pulverize to obtain a modified composite powder;

[0030] (2) Preparation of composite cross-linked adsorbent: Add the modified composite powder obtained in step (1) to 15 parts of polyvinyl alcohol and 12 parts of chitosan, mix and stir evenly, and then add the above mixture to saturated boric acid Carry out immobilized cross-linking in the soluti...

Embodiment 3

[0033] A preparation method for an adsorbent for industrial wastewater treatment, comprising the steps of:

[0034] (1) Preparation of modified composite powder: Take 25 parts of kaolin and 30 parts of sepiolite and disperse them in 150. - one or more of dimethylacetamide and tetrahydrofuran.

[0035] The industrial wastewater is one or more of wastewater containing heavy metal ions, printing and dyeing wastewater, and petrochemical wastewater.

[0036]The technical effects of the present invention are: (1) The adsorbent of the present invention is composed of kaolin and sepiolite as the basic adsorbent raw material, fully combining the characteristics of the two with high specific surface agent, complex pore structure and excellent adsorption sites, extremely Greatly improved the adsorption activity of a single raw material as an adsorbent; in addition, the present invention adopts quaternary ammonium salt tetrameric surfactant and cetyltrimethylammonium bromide to first mod...

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Abstract

The invention provides a preparation method of an adsorbent for industrial wastewater treatment. The preparation method particularly includes steps: (1), preparing modified composite powder; (2), preparing a composite crosslinking adsorbent; (3), preparing a magnetic composite crosslinking adsorbent. Kaolin and sepiolite are composited to serve as a basic adsorbent raw material, and the characteristics that kaolin and sepiolite have high specific surface area, complex pore structure and excellent adsorption site are fully combined, so that adsorption activity when a single raw material is used as an adsorbent is improved greatly. In addition, a quaternary ammonium salt surfactant and cetyl trimethyl ammonium bromide are adopted to modify kaolin and sepiolite, so that alternating performance and adsorption performance of the adsorbent are improved; by introducing polyvinyl alcohol and chitosan for crosslinking reaction, stability and strength of the adsorbent are improved, and the obtained adsorbent can efficiently adsorb pollutants like heavy metal ions, dye and petrochemical pollutants in industrial wastewater.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an adsorbent for industrial wastewater treatment and a preparation method thereof. Background technique [0002] With the development of the economy, there are more and more chemical plants in various places, and the treatment of industrial sewage has become a hot spot of concern from all walks of life. The discharge of traditional electroplating, tanning, metal surface treatment, printing and dyeing, petrochemical and other organic pollutants is increasing. Increase. [0003] Dyestuff is a common type of pollutant in wastewater, mainly from the production process of textile, leather, paper, rubber, plastic, cosmetics, pharmaceutical and food industries. While the extensive use of dyes promotes economic development, it also produces a large amount of dye wastewater discharged into environmental water bodies, resulting in the pollution of natural water bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28C02F1/28B01J20/30C02F101/20
CPCB01J20/0229B01J20/12B01J20/22B01J20/24B01J20/28009C02F1/281C02F1/286C02F2101/20C02F2101/308
Inventor 章俊
Owner ZHEJIANG HONGDIAN ENVIRONMENTAL PROTECTION & TECH CO LTD
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