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Impact-resistant multiplication combined type coking waste water treatment process

A technology for coking wastewater and treatment process, which is applied in the fields of water/sewage multi-stage treatment, flotation water/sewage treatment, water/sludge/sewage treatment, etc. , the aeration tank foam is difficult to eliminate and other problems, to achieve the effect of improving biodegradability and optimizing material composition

Inactive Publication Date: 2009-06-24
TONGJI UNIV +1
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Problems solved by technology

These newly developed wastewater treatment processes can improve the biochemical treatment effect of coking wastewater to a certain extent in specific aspects, but they have not completely solved the difficulty or slow recovery of the system after severe water quality shocks in the actual operation of coking wastewater treatment facilities. The outstanding problem of the long start-up time of the biochemical system, and it does not involve the difficult problem of the foam in the aeration tank existing in the treatment of coking wastewater

Method used

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  • Impact-resistant multiplication combined type coking waste water treatment process
  • Impact-resistant multiplication combined type coking waste water treatment process

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Embodiment Construction

[0029] see figure 1 , The technique of the present invention does not add any dilution water. The volume of coking wastewater in a coking plant is 1500m 3 / d. The sources of waste water are: a. Ammonia distillation waste water with a water volume of 30m 3 / h; b. Drainage of tar workshop, water volume 10-60m 3 / h; c. Drainage of refined benzene workshop, water volume 10m 3 / h; d, cleaning the drainage of the tanker e, underground phenolic water. The physical and chemical pretreatment technology adopts stepless variable speed mechanical stirring coagulation reaction and pressure dissolved air flotation technology. The diameter of microbubbles generated by the pressure dissolved air release system is about 20 μm, and the coagulant dosage concentration is 50-200mg / L.

[0030] Anaerobic compound reaction

[0031] Polyethylene spherical packing is suspended in the reactor, mixed by mechanical stirring, the hydraulic retention time is 8h, the biofilm microbial concentration is ...

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Abstract

An anti-impact multiplying combination coking wastewater treatment technique relates to a treatment method of coking wastewater. The coking wastewater is first qualified by a physical-chemical pretreatment to improve biodegradable property of wastewater; the composite technology of a biological carrier of active sludge is adopted to do anaerobic / hypoxia / aerobic decarbonization / aerobic nitrification biochemical combination treatment; suspended or floating folding ball-shaped fillings are arranged in biochemical reactors and when micro organism traits are abnormal or a great amount of foams existing in the reactor, micro organism active incentive agents are added to the reactor in interval to improve active sludge traits and organism film quantity; finally the water is treated by a physical-chemical advanced treatment to reach a top grade standard. The invention not only strengthens the removal of COD, ammonia-nitrogen, volatile phenol and other pollutants in the coking wastewater by biochemical treatment but also resists serious water quality impact and has the advantages of quick system startup, less foams in an aeration tank, small occupying space, low operation cost and stable and effective treatment to coking wastewater.

Description

technical field [0001] The invention relates to an impact-resistant multiplication combined coking wastewater treatment process, which relates to a coking wastewater treatment method. The invention belongs to the technical field of wastewater treatment in environmental engineering technology. Background technique [0002] Coking wastewater is mainly the coking coal moisture formed with gas escape and condensation during the high-temperature carbonization process of raw coal, as well as the wastewater produced in the process of gas purification and chemical product refining. It is a typical industrial wastewater containing toxic and refractory organic matter. There are many kinds of organic matter in coking wastewater. Toxic organic matter such as benzene, pyridine, catechol, phloroglucinol, dinaphthol, naphthalene, chlorobenzene, etc. inhibit the respiration of microorganisms in the biochemical process, and these organic matter in biological They also interfere and inhibit ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/24C02F3/30
Inventor 魏宏斌贾志宇陈良才邹平侯娜
Owner TONGJI UNIV
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