Coal chemical industrial wastewater treatment system and treatment process

A coal chemical wastewater and treatment system technology, applied in multi-stage water treatment, flotation water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as low treatment efficiency and complicated process flow, and achieve simplified process flow , Reduce the cost of use, and the effect of reasonable pore structure
CN105923907AInactive Publication Date: 2016-09-07BEIJING GUODIAN FUTONG SCI & TECH DEV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING GUODIAN FUTONG SCI & TECH DEV
Publication Date
2016-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a coal chemical industrial wastewater treatment system and a treatment process thereof. The coal chemical industrial wastewater treatment system comprises a raw water tank, an anaerobic tank, an aerobic tank and a membrane tank, which are sequentially connected, wherein coal chemical industrial wastewater sequentially passes through the anaerobic tank, the aerobic tank and the membrane tank after reaching the raw water tank through a lifting pump; an aeration device is arranged in the aerobic tank; a reflux circulation pipeline is arranged between the lower part of the membrane cell and the anaerobic tank; an activated coke addition system is arranged on the anaerobic tank, and a certain amount of activated coke is added into the anaerobic tank. The characteristic of developed mesopores of the activated coke in the wastewater treatment system can be fully utilized to achieve good adsorption effects on difficult-to-degrade organic matters, macromolecular organic matters and the like in the wastewater, and in addition, the activated coke can serve as a colloidal nucleus of activated sludge to improve the performance and water-bearing feature of the sludge and form a good water passage in the surface of a membrane to ensure membrane flux and prevent membrane pollution and plugging; moreover, the activated coke can be regenerated or mixed and hydrated with the sludge for blending combustion, so that the using cost is low.
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Description

technical field

[0001] The invention relates to the field of wastewater treatment, in particular to a system and a wastewater treatment process for treating coal chemical wastewater by adopting an activated coke enhanced membrane bioreactor. 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-finished products through chemical processing, and then further processes them into chemical and energy products. During this process, a large amount of wastewater is discharged, and the wastewater contains a large amount of toxic and harmful substances such as phenol, cyanide, and ammonia nitrogen. COD in comprehensive wastewater is generally about 5000mg / l, ammonia nitrogen is 200-500mg / l, organic matter in wastewater includes phenols, polycyclic aromatic compounds and heterocyclic compounds containing nitrogen, oxygen and sulfur, etc., which is a typical industrial waste...

Claims

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