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Advanced treatment system of coking wastewater

A technology for coking wastewater and advanced treatment, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Utilization rate, ozone reduction effect

Inactive Publication Date: 2011-04-06
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
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Problems solved by technology

[0007] Therefore, the existing catalytic ozonation process cannot achieve cost-effective advanced treatment of coking wastewater due to some defects in the reactor.

Method used

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  • Advanced treatment system of coking wastewater
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Embodiment Construction

[0018] Coking wastewater advanced treatment system of the present invention, its preferred embodiment is as follows figure 1 As shown, including ozone generator, catalytic ozonation reactor, gas-liquid separation device, buffer column, biological activated carbon reactor, tail gas absorption device;

[0019] The bottom of the catalytic ozonation reactor is provided with an air inlet, which is connected to the gas outlet of the ozone generator;

[0020] The lower side of the catalytic ozonation reactor is provided with a water inlet, and the water inlet introduces the effluent of the coking wastewater biochemical process. Above the water inlet is a three-section repeating structure, and each section of the repeating structure is divided into three subsections. The three sub-sections from bottom to top are the ozone absorption section, the catalyst bed and the catalytic reaction section. The height of the catalyst bed is halved from bottom to top. catalyst and iron oxyhydroxide...

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Abstract

The invention discloses an advanced treatment system of coking wastewater. The system mainly comprises an ozone generator, a catalytic ozonation reactor, a gas-liquid separation device, a bumper post, a biological activated carbon reactor and a tail gas absorption device, wherein the catalytic ozonation reactor has a three-section repeating structure; and each repeating structure section is divided to three subsections from bottom to top, namely an ozone absorption section, a catalyst bed layer and a catalytic reaction section. The three-section superimposing mode is utilized to intensify themass transfer function of ozone in the solution and increase the utilization rate of ozone; and the catalytic ozonation technology is adopted to increase the biochemical quality of coking wastewater,increase the treatment efficiency of the subsequent biological activated carbon technology and realize the aim of the high-efficiency advanced treatment of coking wastewater.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to an advanced treatment system for coking wastewater. Background technique [0002] Coking wastewater is mainly the wastewater formed during the high-temperature dry distillation process of coal, gas purification, and chemical product refining process. Hazardous substances are a typical high-concentration refractory toxic and harmful industrial wastewater. Its excessive discharge poses great harm to humans, aquatic products, crops, etc. Even if it is used as water for coke quenching, it will also cause corrosion to coke quenching and coke screening system facilities, affecting normal production. How to improve and solve the pollution of coking wastewater to the environment has become an urgent problem in front of people. [0003] However, the treatment of coking wastewater is still a worldwide problem so far. The treatment of coking wastewater in my country started late, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 王建兵蒋雯婷何绪文李亚男许翠华王金龙秦强
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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