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Catalytic ozonization method

A technology of ozone catalytic oxidation and ozone oxidation, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc., can solve the problem that the oxidation effect cannot meet the COD effluent standard, etc., and achieve the effect of high catalytic efficiency

Inactive Publication Date: 2019-02-26
光大水务(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ozone catalytic oxidation method, aiming to solve the problem that the existing ozone catalytic oxidation effect cannot meet the COD effluent standard

Method used

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Embodiment 1

[0043] An ozone catalytic oxidation method, the ozone catalytic oxidation is carried out using an ozone catalytic oxidation device, the ozone catalytic oxidation device includes an oxygen supply device, an ozone generator, an ozone catalytic oxidation reactor and an absorption device connected in sequence through pipelines, wherein , the ozone catalytic oxidation reactor is a cylindrical pipe with an inner diameter of 100 mm and a height of 1000 ml, including a microporous detonator and a packing layer arranged from bottom to top, wherein the packing of the packing layer is activated gamma-alumina balls The loaded ferric oxide catalyst, and the loading percentage of the ferric oxide is 3%, the COD concentration of the effluent of the secondary settling tank is 92.8mg / L, and the filling capacity of the filler is 4L. The volume of the effluent from the settling tank is 5L.

Embodiment 2

[0045] The difference from Example 1 is that the catalyst loading is 2L, and the reaction time is 40min.

Embodiment 3

[0047]The difference from Example 1 is that the filler of the filler layer is a manganese dioxide catalyst supported by activated carbon, and the loading percentage of the manganese dioxide is 5%.

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Abstract

The invention provides a catalytic ozonization method. The catalytic ozonization method is implemented by using a catalytic ozonization apparatus. The catalytic ozonization apparatus comprises an oxygen supply device, an ozone generator, a catalytic ozonization reactor and an absorption device which are successively connected via pipelines, wherein the catalytic ozonization reactor is a cylindrical pipeline and comprises a microporous aeration device and a packing layer arranged from bottom to top. The effluent of a secondary sedimentation tank is injected into the catalytic ozonization reactor, and catalytic oxidation is carried out under an aeration condition; the COD concentration of the effluent of the secondary sedimentation tank is 60 to 100 mg / L; a packing in the packing layer is acatalytic ozonization catalyst; a volume ratio of the packing to the effluent of the secondary sedimentation tank is (0.5-1): 1; and the aeration efficiency of the microporous aeration device satisfies the condition that a mass concentration ratio of COD in the effluent of the secondary sedimentation tank to ozone is 1: (0.2-1).

Description

technical field [0001] The invention belongs to the technical field of ozone catalytic oxidation, in particular to an ozone catalytic oxidation method. Background technique [0002] With the development of industry, more and more industrial wastewater enters the sewage pipe network. At the same time, there are more and more urban sewage treatment plants and sewage treatment plants in industrial parks that mainly use industrial wastewater. In recent years, the environmental protection situation has become more and more severe, and the requirements for the effluent water quality of urban sewage treatment plants have become more and more stringent. The effluent standards range from Grade B to Grade A, and economically developed areas even require the effluent to meet the surface-like IV standard. Among them, the COD (chemical oxygen demand) Cr standard was increased from 60mg / L to 50mg / L, and then increased to 30mg / L. A large amount of biodegradable COD has been removed in the...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/78
CPCC02F1/725C02F1/78C02F2201/007
Inventor 刘爱宝王冠平石伟蒋延梅荣颖慧刘晓静杜庆洋
Owner 光大水务(深圳)有限公司
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