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Deep oxidation treatment method and apparatus for difficultly-degraded organic chemical industry wastewater

An organic chemical and deep oxidation technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of high operating costs, effluent CODcr exceeding the standard, and high equipment investment

Active Publication Date: 2014-04-09
CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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Problems solved by technology

[0009] The present invention aims to provide a deep oxidation treatment device for refractory organic chemical wastewater, which aims to solve the problems of low treatment efficiency, poor stability, excessive effluent CODcr, and Bottleneck problems such as high equipment investment, large floor area, and high operating costs

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  • Deep oxidation treatment method and apparatus for difficultly-degraded organic chemical industry wastewater
  • Deep oxidation treatment method and apparatus for difficultly-degraded organic chemical industry wastewater
  • Deep oxidation treatment method and apparatus for difficultly-degraded organic chemical industry wastewater

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Embodiment

[0039] Such as figure 1 The shown deep oxidation treatment device for refractory organic chemical wastewater includes an acidification and sterilization pool 5 connected sequentially through pipelines, a primary enhanced electrochemical reactor 8, a secondary enhanced electrochemical reactor 10, and a primary multiphase Catalytic oxidation reactor 11, secondary heterogeneous catalytic oxidation reactor 12, secondary heterogeneous catalytic oxidation reactor 12 is connected to the outlet pipe 13, and the outlet water through the outlet pipe 13 enters the follow-up conventional neutralization coagulation sedimentation and finally completes the mud-water separation .

[0040] The first-level enhanced electrochemical reactor 8, the second-level enhanced electrochemical reactor 10, the first-level heterogeneous catalytic oxidation reactor 11, and the second-level heterogeneous catalytic oxidation reactor 12 are all installed inside the aeration main pipeline 9. An aeration pipelin...

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Abstract

A purpose of the present invention is to provide a deep oxidation treatment apparatus for difficultly-degraded organic chemical industry wastewater so as to solve bottleneck problems of low treatment efficiency, poor stability, excessive CODcr in effluent, high equipment investment, large occupation area, high operation cost and the like of the conventional deep treatment method after the organic chemical industry wastewater is subjected to the conventional two-stage biochemistry treatment. The present invention further provides a deep oxidation treatment method for difficultly-degraded organic chemical industry wastewater through combination of acidification bacterial removal, two-stage enhanced electrochemistry (micro-electrolysis) and two-stage heterogeneous catalysis (Fenton-like) oxidation. The apparatus comprises an acidification bacterial removal tank, a first-stage enhanced electrochemistry reactor, a second-stage enhanced electrochemistry reactor, a first-stage heterogeneous catalysis oxidation reactor and a second-stage heterogeneous catalysis oxidation reactor, wherein the acidification bacterial removal tank, the first-stage enhanced electrochemistry reactor, the second-stage enhanced electrochemistry reactor, the first-stage heterogeneous catalysis oxidation reactor and the second-stage heterogeneous catalysis oxidation reactor are sequentially connected through pipelines, the connection pipeline between the acidification bacterial removal tank and the first-stage enhanced electrochemistry reactor is provided with a lift pump, and the second-stage heterogeneous catalysis oxidation reactor is connected with a water outlet pipe.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering wastewater treatment, and in particular relates to a deep oxidation treatment method and device for refractory organic chemical wastewater. Background technique [0002] The chemical industry occupies an important position in my country's national economy and is a pillar industry of our country. Chemical wastewater occupies a large proportion of my country's industrial wastewater discharge. With the rapid development and expansion of the chemical industry, the harm to the environment is gradually deepening. According to the latest environmental statistics from the National Bureau of Statistics, in 2011, the total wastewater discharge in various regions of my country was 65.92 billion tons, while the industrial wastewater discharge was 21.29 billion tons, of which the chemical industry (including chemical raw materials and chemical products manufacturing, pharmaceutical manufactu...

Claims

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Application Information

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IPC IPC(8): C02F9/06
Inventor 秦树林周如禄龚梦锡王忠泉
Owner CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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