Process for treating coal chemical waste water

A technology of coal chemical wastewater and treatment process, which is applied in water/sewage multi-stage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem that activated carbon pores cannot be fully utilized and activated carbon adsorption capacity is not sufficient Play and other problems to achieve the effect of improved biodegradability and good treatment effect
CN102001789BActive Publication Date: 2012-09-05北京国能普华环保工程技术有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
北京国能普华环保工程技术有限公司
Publication Date
2012-09-05

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Abstract

The invention relates to a process for treating coal chemical waste water, wherein a method combining active material adsorption and biochemical treatment is adopted. The method comprises the following steps of: firstly, introducing coal chemical waste water in a waste water regulating reservoir; secondly, introducing the waste water subjected to adsorption treatment by an adsorption tank into a clarification reservoir for sedimentation; then introducing the waste water subjected to the treatment of the clarification reservoir into a biochemical unit for biochemical treatment; and finally, introducing the waste water subjected to the biochemical treatment into a sedimentation reservoir for sedimentation treatment. In the technical scheme, macromolecular organic pollutants are removed through adsorption, therefore, the requirement of the subsequent biochemical treatment is met, and the problems of insufficient utilization of pores of activated carbon and incomplete exertion of the adsorbability of the activated carbon due to the influence of sludge when the activated carbon is added into an activated sludge aeration tank in the prior art are solved; and the process for treating coal chemical waste water has high efficiency and can sufficiently utilize the pores of the activated carbon and ensure the full exertion of the adsorbability of the activated carbon.
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Description

technical field

[0001] The invention relates to a wastewater treatment process, in particular to a coal chemical wastewater treatment process. Background technique

[0002] Coal chemical industry refers to the industry that uses coal as raw material, converts coal into gas, liquid and solid products or semi-products through chemical processing, and then further processes them into chemical and energy products. During this process, a large amount of wastewater is discharged. At present, the commonly used coal chemical wastewater treatment process is divided into primary treatment, secondary treatment and advanced treatment. Primary treatment is pretreatment, including oil separation, air flotation, precipitation, hydrolysis and acidification, etc.; secondary treatment is mainly biochemical treatment, and activated sludge method is usually used to treat coal chemical wastewater; common methods of advanced treatment are coagulation sedimentation, advanced Oxidation, subsequent...

Claims

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