Treating system and method for coking waste water

A technology for coking wastewater and treatment system, applied in the field of environmental engineering, can solve the problems of excessive COD, non-biodegradation, and affecting the effect of microbial treatment in the effluent, so as to reduce the load of biochemical treatment, make the biochemical treatment simple and efficient, and improve the biodegradability of wastewater. Effect

Inactive Publication Date: 2016-04-13
上海东振环保工程技术有限公司
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Problems solved by technology

[0019] (1) The organic matter in the coking wastewater is complex and contains a high concentration of refractory organic matter, which cannot be degraded through biochemical processes alone, resulting in excessive COD in the effluent;
[0020] (2) Coking wastewater contains a large amount of biologically toxic substances, which are n

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  • Treating system and method for coking waste water
  • Treating system and method for coking waste water
  • Treating system and method for coking waste water

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Embodiment Construction

[0069] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0070] A coking wastewater treatment system, which includes gas energy flocculation devices, at least one multi-component catalytic oxidation device and at least one biochemical device arranged in sequence. In this embodiment, the number of multi-component catalytic oxidation devices is two, and the number of biochemical devices is also two.

[0071] The structure of the gas energy flocculation device is as follows: figure 2 As shown, it includes air energy device inlet pump 101, three-phase vor...

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Abstract

The invention discloses a treating system and method for coking waste water. The treating system comprises a gas-energy flocculation device, at least one multi-element catalytic oxidation device and at least one biochemical device, which are successively arranged. The treating method comprises the following steps: gas-energy-flocculation pretreatment; and multi-element catalytic oxidation and biochemical treatment once or multiple times. The coking waste water contains complex organic components and high-concentration and difficultly biodegradable organic matters which cannot be degraded through simple biochemical process, so CODs in effluent exceed standards; the coking waste water contains a great number of biologically toxic substances which are not biodegradable, inhibit microbes and influence normal treatment effect on the microbes; and besides organic pollutants, the coking waste water also contains high-concentration ammonia-nitrogen and total nitrogen, which also influences normal operation of a biological treatment process.

Description

technical field [0001] The invention relates to a coking wastewater treatment system and a coking wastewater treatment method, belonging to the field of environmental engineering. Background technique [0002] Coking wastewater is a kind of toxic, harmful, high-concentration and refractory organic wastewater produced by high-temperature dry distillation of raw coal, gas purification and chemical product recovery and refining. It mainly contains phenolic compounds, aliphatic compounds, heterocyclic compounds, polycyclic aromatic hydrocarbons, ammonia nitrogen, Sulfide, cyanide, sulfur cyanide and other pollutants. Previously, coking wastewater treatment mainly consisted of processes such as oil removal, phenol removal, ammonia distillation, and biochemistry to remove most of the organic pollutants and ammonia nitrogen in the wastewater. Nowadays, with the implementation of "Discharge Standards for Pollutants in Coking Chemical Industry" (GB16171-2012 instead of GB16171-1996)...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/34C02F1/469C02F3/10C02F1/52C02F1/56
CPCY02W10/10
Inventor 魏伟肖凡汤文华陈彦历胡伟
Owner 上海东振环保工程技术有限公司
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