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Adsorbent for industrial wastewater treatment and preparation method thereof

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

Active Publication Date: 2017-07-07
ZHEJIANG HONGDIAN ENVIRONMENTAL PROTECTION & TECH CO LTD
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  • Summary
  • 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
  • Adsorbent for industrial wastewater treatment and preparation method thereof

Examples

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Embodiment 1

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

[0024] (1) Preparation of modified composite powder: disperse 15 parts of kaolin and 20 parts of sepiolite in 100 parts of toluene, and ultrasonically vibrate for 1 hour at room temperature, then dropwise add 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: the

[0026] The modified composite powder obtained in step (1) is added to 10 parts of polyvinyl alcohol and 6 parts of chitosan, mixed and stirred evenly, and then the above mixture is added to a saturated boric acid solution f...

Embodiment 2

[0029] A preparation method for an adsorbent for industrial wastewater treatment, comprising the steps of:

[0030] (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 dropwise add 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;

[0031] (2) Preparation of composite cross-linked adsorbent: the modified composite powder obtained in step (1) is added to 15 parts of polyvinyl alcohol and 12 parts of chitosan and mixed evenly, then the above-mentioned mixture is added to saturated boric acid Carry out immobilized cross-l...

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