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Method and device for multistage and multi-effect catalytic advanced oxidation coking wastewater advanced treatment

A technology of coking wastewater and advanced oxidation, applied in multi-stage water treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. The effect of reducing unit cost

Inactive Publication Date: 2019-11-26
HUNAN PINGAN ENVIRONMENT PROTECTION
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Problems solved by technology

It is difficult to achieve the effect of advanced treatment of coking wastewater by adopting a certain form of single-stage and single-stage, and a single oxidation technology will result in long residence time, large volume, high cost, high operating cost and small operable adjustment space for the treatment monomer and other shortcomings

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  • Method and device for multistage and multi-effect catalytic advanced oxidation coking wastewater advanced treatment
  • Method and device for multistage and multi-effect catalytic advanced oxidation coking wastewater advanced treatment
  • Method and device for multistage and multi-effect catalytic advanced oxidation coking wastewater advanced treatment

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with specific examples, but the present invention is not limited thereto.

[0042] Such as Figure 1 to Figure 7As shown, the multi-stage multi-effect catalytic advanced oxidation coking wastewater advanced treatment device of the present invention includes a pretreatment catalytic ozone oxidation air flotation treatment system A, a multi-effect filtration treatment system B, a hydrogen peroxide contact oxidation system C, a hydrogen peroxide / ultraviolet heterogeneous catalytic nano Bubble ozone oxidation system D, multiphase filtration and catalytic digestion system E and water outlet / backwashing system F;

[0043] The pretreatment catalytic ozonation air flotation treatment system A includes an ozone generator 1, a dissolved air flotation device 2, a dissolved air tank 3, an air compressor 4 and a mud / oil pool 5 connected in sequence, and the described The dissolved air flotation device 2 ...

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Abstract

The invention discloses a method and a device for multistage and multi-effect catalytic advanced oxidation coking wastewater advanced treatment. The device comprises a pretreatment catalytic ozonationair floatation treatment system, a multi-effect filtration treatment system, a hydrogen peroxide contact oxidation system, a hydrogen peroxide / ultraviolet heterogeneous catalytic nano-bubble ozonation system, a heterogeneous filtration and catalytic digestion system and an effluent / backwashing system. Macromolecular organic matters which are difficult to treat in the coking wastewater are effectively removed through multistage and multi-effect catalytic advanced oxidation; the coordination effect of heterogeneous catalysis reduces the consumption of a single oxidant and reduces the unit price cost of system treatment; the application of a granular carbon catalytic ozonation technology under an alkaline condition achieves a very strong decomposition function and a very strong decolorizingeffect; and the application of the hydrogen peroxide / ultraviolet heterogeneous catalytic nano-bubble ozonation system makes the chroma of the effluent finally controlled within 20.

Description

technical field [0001] The invention relates to industrial wastewater treatment, in particular to a multi-stage multi-effect catalytic advanced oxidation coking wastewater advanced treatment method and device. Background technique [0002] With the development of human society and economic progress, more and more attention has been paid to environmental issues, and more and more investment in environmental protection has been made. At present, the requirements and standards for pollution emission control in my country have become higher and higher. Coking wastewater contains toxic / refractory substances, complex components, and poor biodegradability. It is recognized as one of the most difficult industrial wastewaters in the world. In the past ten years, most of the coking wastewater treatment processes have adopted anaerobic / aerobic treatment methods such as A / O or A2 / O. [0003] Traditional biochemical treatment technology has a certain treatment effect on coking wastewate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F101/30
CPCC02F1/001C02F1/24C02F1/283C02F1/32C02F1/66C02F1/722C02F1/725C02F1/78C02F9/00C02F2101/30C02F2301/08
Inventor 刘洁田添闲邹翠华周妮
Owner HUNAN PINGAN ENVIRONMENT PROTECTION
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