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Preparation method for composite material for micro-polluted water treatment

A technology of micro-polluted water and water bath, applied in water/sewage treatment, water treatment parameter control, adsorption water/sewage treatment, etc.

Inactive Publication Date: 2017-04-26
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a composite material for micro-polluted water treatment in order to overcome the deficiencies of the prior art in treating micro-polluted water bodies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Add 30g of commercially available bentonite powder and 0.3g of cetyltrimethylammonium bromide to 50mL of water, stir for 2 hours, then add 0.05g of aminotrimethylene phosphonic acid, then add 5g of calcium chloride, stir for precipitation and separation, remove the above Clear liquid, pour 50mL of hydrogen peroxide solution with a mass concentration of 30% and 3g of ammonium chloride, and place the whole reaction in a water bath at 5°C, react for 5h, precipitate, remove the supernatant, and then add 20mL with a concentration of 4mol / L The ferric chloride solution was stirred for 5 hours, precipitated, the solid precipitate was separated from the liquid, the solid was washed 5 times with deionized water, and dried at 105°C. The obtained material was a composite material for micro-polluted water treatment.

[0011] 20g of the composite material was used to treat 300mL of slightly polluted river water, and the concentration of ammonia nitrogen, COD and total phosphorus in t...

Embodiment 2

[0013] Add 20g of commercially available bentonite powder and 0.1g of cetyltrimethylammonium bromide to 40mL of water, stir for 1 hour, then add 0.01g of aminotrimethylene phosphonic acid, then add 3g of calcium chloride, stir for precipitation and separation, remove the above Clear liquid, pour 30mL hydrogen peroxide solution with a mass concentration of 20% and 2g ammonium chloride, and place the whole reaction in a water bath at 4°C, react for 4h, precipitate, remove the supernatant, and then add 10mL with a concentration of 2mol / L The ferric chloride solution was stirred for 2 hours, precipitated, the solid precipitate was separated from the liquid, the solid was washed 3 times with deionized water, and dried at 105°C. The obtained material was a composite material for slightly polluted water treatment.

[0014] 20g of the composite material was used to treat 300mL of slightly polluted river water, and the concentration of ammonia nitrogen, COD and total phosphorus in the w...

Embodiment 3

[0016] Add 25g of commercially available bentonite powder and 0.3g of cetyltrimethylammonium bromide to 50mL of water, stir for 2 hours, then add 0.03g of aminotrimethylene phosphonic acid, then add 5g of calcium chloride, stir for precipitation and separation, remove the above Clear liquid, pour 50mL of hydrogen peroxide solution with a mass concentration of 30% and 3g of ammonium chloride, and place the whole reaction in a water bath at 5°C, react for 4h, precipitate, remove the supernatant, and then add 15mL with a concentration of 3mol / L The ferric chloride solution was stirred for 4 hours, precipitated, the solid precipitate was separated from the liquid, the solid was washed 4 times with deionized water, and dried at 105°C. The obtained material was a composite material for micro-polluted water treatment.

[0017] 20g of the composite material was used to treat 300mL of slightly polluted river water. After the treatment, the concentration of ammonia nitrogen, COD and tota...

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PUM

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Abstract

The invention relates to a preparation method for iron-nickel loaded nano calcium peroxide for micro-polluted water treatment, wherein the method successively comprises the following steps: adding a nickel iron hydrotalcite powder to a sodium valerate solution with the concentration of 0.2-0.8 mmol / L, and stirring for 2-4 h in 50-70 DEG C water bath; adding ethylenediaminetetraacetic acid calcium disodium salt, continuing to stir for 2-4 h in the water bath, filtering the product, washing with distilled water, filtering to dry, drying at the temperature of 105 DEG C, and then calcining for 30 min at the temperature of 300-500 DEG C, to obtain calcium oxide pillared iron-nickel hydrotalcite; allowing 30 g of the calcium oxide pillared iron-nickel hydrotalcite to pass through a 20-30 mesh sieve, then adding 40-50 mL of a hydrogen peroxide solution with the mass concentration of 10%, allowing the whole reaction to be carried out in 4-5 DEG C water bath, carrying out a reaction for 4-5 h, separating a solid precipitate and a liquid, washing the solid with deionized water for 3-5 times, and then drying at the temperature of 105 DEG C, to obtain the material, namely the nano calcium peroxide for micro-polluted water treatment. The material has the characteristics of hydrotalcite, and has the advantages of large specific surface area, strong adsorbability and catalytic oxidation.

Description

technical field [0001] The invention relates to the development of new materials for environmental pollution control, in particular to a method for preparing composite materials used for micropolluted water treatment. Background technique [0002] Slightly polluted source water refers to drinking water source water that is polluted by industrial, agricultural and domestic sewage, some of which exceed the standard for Class III water bodies in the Environmental Quality Standards for Surface Water (GB3838-2002). In recent years, the quality of drinking water source water in my country The situation we are facing is very severe. Most urban drinking water sources have been polluted to varying degrees. The phenomenon of eutrophication in water bodies has been aggravating. The existing conventional water treatment process can no longer guarantee the effect of the water plant on the treatment of pollutants in the effluent, so it also poses new challenges to the existing conventional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/72
CPCC02F1/00C02F1/28C02F1/281C02F1/285C02F1/722C02F2103/007C02F2209/08C02F2209/14C02F2209/18C02F2305/026
Inventor 彭明国杜尔登马建锋王利平李志宏葛秋凡
Owner CHANGZHOU UNIV
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