Method for treating coal chemical industry wastewater through freeze concentration

A coal chemical wastewater, freeze-concentration technology, applied in the direction of frozen water/sewage treatment, chemical instruments and methods, filtration treatment, etc., can solve the problems of increasing the cost of coal chemical wastewater treatment, cumbersome treatment process, etc., to reduce TDS and COD value , Safe and reliable operation

Inactive Publication Date: 2021-06-29
杨易
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  • Application Information

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Problems solved by technology

[0004] Through the above analysis, the problems and defects of the existing technology are: the existing coal chemical wastewater treatment method has a cumbersome treatment process and requires multiple treatments, which increases the cost of coal chemical wastewater treatment

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  • Method for treating coal chemical industry wastewater through freeze concentration
  • Method for treating coal chemical industry wastewater through freeze concentration
  • Method for treating coal chemical industry wastewater through freeze concentration

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Aiming at the problems existing in the prior art, the present invention provides a method for freezing and concentrating coal chemical industry wastewater. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, the method for freeze-concentration treatment of coal chemical industry wastewater provided by the embodiments of the present invention comprises the following steps:

[0030] S101, collecting coal chemical wastewater and pretreating the collected coal chemical wastewater;

[0031] S102, preparing a wastewater filtration memb...

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Abstract

The invention belongs to the technical field of wastewater treatment, and discloses a method for treating coal chemical industry wastewater through freeze concentration. The method comprises the following steps: collecting coal chemical industry wastewater, pretreating the collected coal chemical industry wastewater, preparing a wastewater filtering membrane, enabling the pretreated coal chemical industry wastewater to pass through the wastewater filtering membrane to obtain filtered water, and freezing and concentrating the filtered water. According to the method for treating the coal chemical industry wastewater through freeze concentration, precipitation and oil discharge of coal chemical industry wastewater are firstly carried out, so that particle impurities in the coal chemical industry wastewater are removed; the coal chemical industry wastewater is purified again through preparation of a ceramic membrane and filtration; a freeze concentration technology is carried out at low temperature and normal pressure, so that the operation is safe and reliable, and the pipeline is not easy to block; and after the coal chemical industry wastewater is treated, the content of salts and organic matters in the coal chemical industry wastewater can be reduced at the same time, the TDS value and the COD value of the coal chemical industry wastewater are reduced, and the obtained reclaimed water can be directly used as circulating cooling water.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for freezing and concentrating coal chemical industry wastewater. Background technique [0002] At present, coal chemical wastewater mainly includes coking wastewater, coal gasification black water, coal direct / indirect liquefaction wastewater, and wastewater generated during the preparation of synthesis gas conversion catalysts. The huge water consumption and wastewater discharge are restricting the development of the coal chemical industry. A salient issue. If the above wastewater can be recycled, the goals of saving water resources and environmental protection can be achieved, and the coal chemical industry can realize clean production. [0003] Generally, the treatment methods of coal chemical wastewater mainly include pretreatment process + biochemical treatment process + wastewater reuse treatment + concentrated brine treatment + concentra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F1/001C02F1/22C02F1/40C02F1/44C02F9/00C02F2001/007
Inventor 杨易夏来源左勇徐英姿
Owner 杨易
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