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A method for efficient separation and automatic circulation of powder catalyst in the process of catalytic oxidation treatment of sewage

A catalytic oxidation and automatic circulation technology, which is applied in the field of water pollution control, can solve the problems of restricting wide application, loss of catalyst, complex operation and operation procedures, etc., and achieve the effect of high-efficiency separation operation, high-efficiency separation, and improved effect

Active Publication Date: 2020-07-31
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the existing catalyst separation methods and equipment have shortcomings such as low recovery efficiency, catalyst loss, and complicated operating procedures for the separation and recovery of powder catalysts, which limit their wide application.

Method used

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  • A method for efficient separation and automatic circulation of powder catalyst in the process of catalytic oxidation treatment of sewage
  • A method for efficient separation and automatic circulation of powder catalyst in the process of catalytic oxidation treatment of sewage
  • A method for efficient separation and automatic circulation of powder catalyst in the process of catalytic oxidation treatment of sewage

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Embodiment Construction

[0029] The functions and advantages of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as figure 1 As shown, the device for efficiently separating and automatically circulating powder catalysts in the process of catalytic oxidation treatment of sewage in the present invention includes: an ozone generator 1, a strong oxidant dosing device 2, a lift pump 3, a water ejector 4, a diffuser 5, Catalytic oxidation reaction tank 6, ultraviolet lamp 7, catalyst separation pump 8, centrifugal hydraulic interception pulse separator 9, catalyst return valve 10, deactivated catalyst exhaust valve 11, pulse backwash pump 12, clear water tank 13, pulse backwash Valve 14, water outlet valve 15, water inlet valve 16, ultraviolet lamp controller 17, flow meter 18. The outlet of the strong oxidant dosing device 2 is connected to the water inlet pipeline of the lift pump 3, and the water outlet of the lif...

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Abstract

The invention discloses a method for efficient separation and automatic circulation of a powder catalyst in a process of treating sewage by catalytic oxidation, and belongs to the field of treatment of water pollution. The method comprises the following four steps: water feeding mixing, catalytic oxidation reaction, catalyst separation and automatic circulation, clear water storage and pulse backwashing. By coupling effect of water feeding tangential washing, centrifugal force and pulse backwashing, pressure difference increasing caused by the reason that the powder catalyst is accumulated onthe surface of a filter cartridge of a centrifugal hydraulic intercepting pulse separator is greatly reduced, and therefore, long-time, stable and efficiency separation running of the centrifugal hydraulic intercepting pulse separator is ensured. By high-speed water flow, the powder catalyst which still has good mobility after being separated is absorbed through negative pressure generated at theposition of a throat pipe of an injector, the powder catalyst is mixed with sewage, catalytic oxidation treatment continues, and thus, automatic circulation of the separated powder catalyst is realized. The brand-new technology is provided for catalytic oxidation treatment and recycling of the sewage.

Description

technical field [0001] The invention belongs to the field of water pollution control, and in particular relates to a method for efficient separation and automatic circulation of powder catalysts in the process of catalytic oxidation treatment of sewage. Background technique [0002] The tail water of domestic sewage plants contains a certain amount of refractory organic pollutants. The vast majority of industrial sewage usually has low BOD / COD, high COD content and is difficult to biodegrade. Therefore, the chemical oxidation method is often used in the advanced treatment of tail water in domestic sewage plants and the treatment of industrial sewage, but the traditional chemical oxidation method must add an excessive amount of strong oxidizing agents (such as H 2 o 2 , ClO 2 , O 3 ), and the chemical oxidation takes a long time (usually not less than 60min), the pH value is often around 3, and the reaction conditions are harsh. Catalytic oxidation can greatly promote the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72
CPCC02F1/725C02F2305/10
Inventor 刘再亮吴胜华孟海玲王雅萍练建军
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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