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Copper polysilicate, preparation method thereof and application thereof in water treatment

A technology of copper-silicon and copper salts, which is applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, copper compounds, etc., can solve the problems of unseen preparation methods of poly-copper-silicon salt catalysts, high toxicity of by-products, etc., and achieve improved oxidation The effect of high performance and utilization rate, strong activity and low preparation cost

Inactive Publication Date: 2010-08-04
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ozone can oxidize many refractory organic substances in water, there are also some shortcomings: ozone can only oxidize and remove some organic substances, but it is not easy to completely degrade organic substances into CO 2 and H 2 O, some by-products of ozone oxidation are highly toxic
There is no report on polycopper silicate, and there is no report on the preparation method of polycopper silicate catalyst and its application in heterogeneous catalytic ozonation water treatment

Method used

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  • Copper polysilicate, preparation method thereof and application thereof in water treatment
  • Copper polysilicate, preparation method thereof and application thereof in water treatment
  • Copper polysilicate, preparation method thereof and application thereof in water treatment

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specific Embodiment approach 1

[0008] Embodiment 1: In this embodiment, the polycopper silicon salt is made by adding the alkali metal silicate aqueous solution dropwise into the soluble copper salt aqueous solution, and then sieving through static sedimentation, activation, filtration, washing, drying, and grinding. wherein, the alkali metal silicate aqueous solution is added dropwise to the soluble copper salt aqueous solution until the pH value is 8-9.

[0009] The polycopper silicon salt described in this embodiment is solid, amorphous, blue-green in color, with a particle size of 0.1-0.5 mm, and can completely settle after standing in water for 2 minutes, with a specific surface area of ​​377.1597 m? / g.

specific Embodiment approach 2

[0010] Embodiment 2: This embodiment is different from Embodiment 1 in that: the soluble copper salt in the soluble copper salt aqueous solution is copper nitrate, copper sulfate or copper chloride. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the alkali metal silicate in the alkali metal silicate aqueous solution is sodium silicate, potassium silicate or sodium metasilicate. Others are the same as in the first embodiment.

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Abstract

The invention discloses copper polysilicate, a preparation method thereof and application thereof in a water treatment, which belong to the field of water pollution. The invention aims to provide the copper polysilicate, the preparation method thereof and the application thereof in the water treatment. The copper polysilicate is prepared by reacting aqueous solution of a soluble cupric salt with aqueous solution of alkali metal silicate. The preparation method comprises the following steps of: dropping the aqueous solution of the alkali metal silicate into the aqueous solution of the soluble cupric salt under continuous stirring until the pH value is 8 to 9; drying the mixture after still deposition, activation, filtration and washing; and grinding and screening the mixture. The copper polysilicate is used as a catalyst in a heterogeneous catalysis ozone oxidation water treatment. The copper polysilicate has a large specific surface area, good settling performance and catalytic effect, and no toxic and side effects. The preparation method is simple and has abundant raw material sources, so the preparation cost is low. The copper polysilicate has the advantages of strong activity for catalytic removal of organic pollutants, high self stability, easy recycling, no generation of secondary pollutions and the like.

Description

technical field [0001] The invention belongs to the field of drinking water treatment, and in particular relates to polycopper silicon salt, its preparation method and its application in water treatment. Background technique [0002] Ozone oxidation is a safer water treatment technology, which has been widely used in disinfection and pre-oxidation of organic matter. Although ozone can oxidize many refractory organic substances in water, there are also some shortcomings: ozone can only oxidize and remove some organic substances, but it is not easy to completely degrade organic substances into CO 2 and H 2 O, some by-products of ozone oxidation are highly toxic. In contrast, ozone-based catalytic ozonation technology can effectively improve the removal efficiency of ozone on organic matter and reduce the toxicity of by-products. Heterogeneous catalytic ozonation technology is a new type of method developed in recent years to oxidize organic matter that is difficult to be ox...

Claims

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Application Information

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IPC IPC(8): C02F1/78C01G3/00C01B33/20B01J23/72
Inventor 陈忠林刘玥沈吉敏韩莹刘宇
Owner HARBIN INST OF TECH
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