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Novel combined process for treating coking wastewater

A coking wastewater and combined process technology, applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc.

Inactive Publication Date: 2012-08-01
四川鑫超越环保科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the difficulties in achieving continuous standard discharge of the effluent water quality of the existing domestic coking wastewater treatment technology, and the high operating cost, easy to cause secondary pollution, low biochemical efficiency, poor ammonia nitrogen removal effect, and poor effluent decolorization effect , advanced treatment cost and other problems, so as to provide a new combination treatment process oil separation air flotation + O / A / O + coagulation sedimentation to solve the existing problems in the treatment of coking wastewater

Method used

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  • Novel combined process for treating coking wastewater
  • Novel combined process for treating coking wastewater

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing.

[0028] refer to figure 1 , a specific technical scheme for treating coking wastewater with a new combined process is:

[0029] A new combined process is used to treat coking wastewater. The whole process flow is divided into three routes, water treatment line, mud oil treatment line and pharmaceutical line. The water treatment line is divided into a first-level pretreatment section, a second-level biochemical treatment section and a third-level advanced treatment section:

[0030] (1) Primary pretreatment section: The pretreatment section mainly removes oil, suspended solids, sulfide and part of CODcr in the wastewater. The process flow of the processing section is described as follows:

[0031] The total influent water flows into the adjustment tank after oil separation treatment in the grease trap, and the water quality and quantity are adjusted. The sewage in the adj...

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Abstract

The invention discloses a novel combined process for treating coking wastewater. According to the invention, by considering the characteristics of the coking wastewater and the domestic existing treatment conditions, the novel combined process adopts a novel combined treatment process to carry out oil isolation / floatation, O / A / O and coagulating sedimentation to solve the problem in the existing technology for treating the coking wastewater. The whole process flow is divided into three paths: a water treatment path, a sludge oil treatment path and a medicament path. The novel combined process disclosed by the invention has the advantages of low operation cost, high biochemical efficiency, capability of continuously discharging with standards, good ammonia nitrogen removing effect, difficulty in causing secondary pollution and low deep treatment cost, and is suitable to be popularized and applied.

Description

technical field [0001] The invention relates to a coking wastewater treatment process, in particular to a novel combination process for coking wastewater treatment. Background technique [0002] Coking wastewater is high-concentration organic wastewater produced in the process of coal coke, gas purification and coking product recovery. A large amount of coking wastewater is discharged outside, which not only causes great pollution to the environment, but also directly threatens human health. The composition of coking wastewater is complex, containing a large amount of organic pollutants such as phenols, biphenyl, pyridine, quinoline, indole, etc., as well as toxic and harmful substances such as cyanide, inorganic fluoride ions, ammonia nitrogen, etc. The pollutants have high chroma and are difficult to biochemically degrade high-concentration organic industrial wastewater. [0003] At present, more than 80% of domestic coking enterprises adopt A / O-based activated sludge me...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 曾莉宋宏杨东
Owner 四川鑫超越环保科技有限公司
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