Method for treating total nitrogen in coal chemical wastewater by using microbes

A technology for coal chemical wastewater and microbial treatment, applied in biological water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve the problem that the total nitrogen in the effluent cannot be effectively controlled, so as to reduce construction costs, The process flow is simple and the effect of improving the processing capacity
CN102249481AInactive Publication Date: 2011-11-23浙江汉蓝环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
浙江汉蓝环境科技有限公司
Publication Date
2011-11-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for treating total nitrogen in coal chemical wastewater by using microbes. The method is characterized in that the wastewater sequentially passes through a first aerobic tank, a first sedimentation tank, a facultative tank, a second aerobic tank and a second sedimentation tank to be subjected to two-stage biochemical treatment; microorganisms and microbial carriers are added into the first aerobic tank, the facultative tank and the second aerobic tank; before entering into the first aerobic tank, the wastewater passes through an Anammox tank, anammox bacterias and carrier activated carbon are added into the Anammox tank, and an aeration device and a mixing device are also arranged in the Anammox tank. The method disclosed by the invention is concise in technological process, and an Anammox tank is adopted in the first stage of the method, and different operation modes can be adopted according to different water qualities, so that the Anammox tank is adapted to fed water with different natures, thereby reducing the construction cost, improving the treatment capacity, and achieving an effect of energy conservation and consumption reduction. Because the total nitrogen is removed through two-stage A / O (hydrolytic acidification / oxic treatment) and anaerobic ammonia oxidation, the total nitrogen removal effect is obviously better than that achieved in the existing A / O process.
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Description

technical field

[0001] The invention relates to the field of biochemical environmental protection, in particular to a method for treating total nitrogen in coal chemical wastewater by using microorganisms. Background technique

[0002] At present, nitrogen is one of the main elements that cause eutrophication in lakes, inland seas and other closed waters. It will cause excessive proliferation of algae, resulting in eutrophication of water bodies, a large number of algae death will consume oxygen in the water, and some algae protein toxins can be enriched in organisms and poison people through the food chain. All countries have strict restrictions on the discharge of nitrogen-containing substances in wastewater. And with the continuous development of industrial and agricultural production, water pollution caused by nitrogen is becoming more and more serious. The continuous tightening of sewage discharge standards is a common development trend in all countries in the world. ...

Claims

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