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A method and application of a shell polycan/hydrophobic absorbing material in the obstetric water in the wastewater

An adsorption material and wastewater treatment technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of high cost and complicated preparation process, and achieve easy operation, simple preparation process, and regeneration The effect of simple process

Active Publication Date: 2021-04-20
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] The present invention provides a method for removing anions in wastewater, aiming at the disadvantages of current silver-based and copper-based adsorption materials such as high cost and complex preparation process

Method used

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Embodiment Construction

[0029] The present invention will be described below in conjunction with specific examples, but it should be understood that these examples are only used to illustrate the present invention and do not constitute a limitation to the scope of the present invention.

[0030] A kind of preparation method of cross-linked chitosan / hydrophobic montmorillonite microsphere adsorption material is as follows:

[0031] Hydrophobic modified montmorillonite particles are used as emulsion stabilizer, natural polymer material chitosan acetic acid solution is used as internal water phase, liquid paraffin is used as organic dispersion medium, glutaraldehyde is used as cross-linking agent, and the shell is obtained by emulsion cross-linking method. Glycan / hydrophobic montmorillonite microspheres.

[0032] Specific steps are as follows:

[0033] (1) The montmorillonite slurry whose mass volume concentration is 5% is hydrated at a temperature of 40° C. for 4 h; In the aqueous solution, the volum...

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Abstract

The invention discloses a preparation method and application of a chitosan / hydrophobic montmorillonite adsorption material for treating anions in wastewater, and belongs to the technical field of sewage purification and treatment in environmental protection. Using hydrophobically modified montmorillonite particles as emulsion stabilizer, chitosan acetic acid solution as internal water phase, liquid paraffin as organic dispersion medium, glutaraldehyde as crosslinking agent, chitosan / montmorillonite was obtained by emulsion crosslinking method. Soil microspheres. The chitosan / montmorillonite microsphere adsorbent prepared by the method has good adsorption performance and adsorption capacity for anions in water, and the hydrophobically modified system is easier to separate from water. The invention provides a new technical reference for the removal of anions in wastewater, and has good recovery and recycling effects. The raw materials required by the invention are natural, non-toxic, common and readily available, low in price, simple in preparation process, high in treatment efficiency, short in cycle and convenient in regeneration treatment, and are an effective adsorbent for treating anions in waste water.

Description

technical field [0001] The invention discloses a preparation method and application of a chitosan / hydrophobic montmorillonite adsorption material for treating anions in wastewater, and belongs to the technical field of sewage purification and treatment in environmental protection. Background technique [0002] Wastewater treatment is one of the key problems to be solved in environmental pollution. The composition of industrial wastewater is complex, often containing heavy metal ions such as copper, halogens and oxyacid anions. Different valence anions in wastewater, such as halogen elements and chromate ions, have certain application value. If they are discharged directly, they will not only pollute the environment but also cause waste of resources. [0003] Take iodine wastewater, one of the halogens, as an example. This type of wastewater usually comes from the nuclear industry. Existing treatment technologies, such as ion exchange resin method, copper iodide method, blow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
CPCB01J20/12B01J20/24B01J20/28019C02F1/281C02F1/286
Inventor 张文君李晴杨晨毛倩贺高红
Owner DALIAN UNIV OF TECH
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