Preparation method of ozone oxidation catalyst for removing organic matters and total nitrogen in water

A technology of ozone oxidation and organic matter, applied in the field of environmental sewage treatment, can solve the problems of secondary pollution of iron sludge, low efficiency of ozone alone, large dosage, etc., achieve strong adsorption performance, improve wastewater biodegradability, toxicity and total The effect of nitrogen content reduction

Inactive Publication Date: 2018-12-11
大连海川博创环保科技有限公司
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Problems solved by technology

It solves the problems of secondary pollution caused by the large dosage of iron sludge in the traditional process of Fenton method, and the low efficiency of ozone alone. It has a good effect on the degradation of organic matter and total nitrogen in industrial wastewater, and effectively improves the biodegradability of wastewater.

Method used

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  • Preparation method of ozone oxidation catalyst for removing organic matters and total nitrogen in water
  • Preparation method of ozone oxidation catalyst for removing organic matters and total nitrogen in water
  • Preparation method of ozone oxidation catalyst for removing organic matters and total nitrogen in water

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Embodiment 1

[0031] (1) Modification of catalyst support: with 500g aluminum hydroxide powder as raw material, with one or more mixtures in polyethylene glycol, sodium bicarbonate, glucose as pore-forming agent, ultrapure water as binding agent, Preparation of γ-Al with a diameter of 3-5 mm 2 o 3 ball carrier.

[0032] (2) Preparation of immersion solution: 74.7 g of cobalt acetate tetrahydrate and 51.6 g of cerium acetate were used as active component precursors, and 1 L of water was used as a solvent to prepare the immersion solution.

[0033] (3) Preparation of catalyst: 500g of γ-Al prepared in step (1) 2 o 3 Place in the impregnating solution obtained in step (2), shake and adsorb for 1-10 hours; filter and dry in an oven at 105°C, place in a muffle furnace, heat up to 600°C at a heating rate of 200°C / h, and calcine at a constant temperature for 6 hours After the reaction to generate oxides, that is, the catalyst.

[0034] According to the characteristics of high salt, organic ma...

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Abstract

The invention belongs to the field of environment sewage treatment, and particularly relates to a preparation method of an ozone oxidation catalyst for removing organic matters and total nitrogen in water. Mesoporous alumina is used as a carrier; metallic oxides are doped and loaded onto the surface of the carrier of alumina and an inside pore passage structure; a prepared catalytic material is porous; the specific surface area is large; the adsorption performance is high; certain mechanical strength and physicochemical stability are realized; a novel ozone oxidation catalyst is obtained; ozone molecules are adsorbed at the pore passage at the catalyst surface and are in full contact with active ingredients and contaminants; the utilization efficiency of ozone molecules is greatly improved; the ozone reaction speed is improved; the organic matters and total nitrogen in industrial wastewater can be effectively removed.

Description

technical field [0001] The invention belongs to the field of environmental sewage treatment, and in particular relates to a preparation method of a metal oxide-doped supported catalyst with alumina balls as the carrier. Background technique [0002] As the country's emission standards for COD and ammonia nitrogen in wastewater are becoming more and more stringent, some refractory organic matter and organic nitrogen in industrial wastewater cannot meet the current environmental protection requirements of our country after conventional biochemical treatment. In order to improve the biodegradability of wastewater and reduce the toxicity of wastewater, it is necessary to add an advanced oxidation system to pretreat industrial wastewater. [0003] As a new advanced oxidation technology, heterogeneous catalytic ozonation technology has the advantages of strong oxidation ability, simple process equipment, and no secondary pollution. It effectively solves the shortcomings of low uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C02F1/72C02F1/78C02F101/30C02F101/38C02F103/36
CPCB01J23/83C02F1/725C02F1/78C02F2101/30C02F2101/38C02F2103/36
Inventor 陈捷徐晓晨靳文尧杨凤林
Owner 大连海川博创环保科技有限公司
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