Device and method for processing coking wastewater by adopting suspended filler-anaerobic membrane bioreactor

A technology of membrane bioreactor and coking wastewater, which is applied in the field of coking wastewater treatment, can solve the problems of high operating cost and serious membrane pollution, and achieve the effect of reducing operating cost, low operating cost and simple operation

Inactive Publication Date: 2014-10-08
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high operating cost and serious membrane pollution in the current coking wastewater treatment process, and proposes a device and method for treating coking wastewater with a suspended filler-micro-aerobic membrane bioreactor

Method used

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  • Device and method for processing coking wastewater by adopting suspended filler-anaerobic membrane bioreactor

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Embodiment Construction

[0020] Such as figure 1 Shown is a schematic diagram of the device structure of the suspension filler-micro-oxygen membrane bioreactor of the present invention for coking wastewater treatment. The device includes a micro-oxygen reaction tank 1 and a sludge settling tank 2. In the micro-oxygen reaction tank 1, a stirring system 3, Membrane module 4, microporous aerator 5, suspension filler 6, pump aerator 7, water inlet pump 8 and suction pump 11; built-in baffle 9 separates micro-oxygen reaction tank 1 and sludge settling tank 2 Open, the upper part of the built-in baffle 9 is equipped with an anti-loss net 10; the influent water is sent to the micro-oxygen reaction tank 1 by the influent pump 8; the membrane module 4 is connected to the suction pump 11, and under the action of the suction pump 11, the effluent is filtered through the membrane module 4 Discharging: A sludge discharge pipe is laid at the bottom of the sludge settling tank 2 and connected to the sludge pump 12 f...

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Abstract

The invention discloses a device and a method for processing a coking wastewater by adopting a suspended filler-anaerobic membrane bioreactor, belonging to the field of coking wastewater treatment. The device comprises an anaerobic reaction pool and a sludge sedimentation pool, wherein a micropore aeration system, a suspended particle packing, a membrane module and a stirring system are arranged inside the anaerobic reaction pool; the activated sludge in the anaerobic reaction pool takes a biological membrane attached to the suspended particle packing as a main component; the suspended activated sludge is collected, separated and discharged out of the system through the sludge sedimentation pool; and synchronous nitrification and denitrification functions of the biological membrane on the suspended packing are enhanced by stirring for fluidization of the stirring system under an anaerobic condition, thereby achieving the treatment effect of synchronously removing chemical oxygen demand (COD) and total nitrogen in the coking wastewater. By adopting the device, the aeration rate is significantly reduced, and the operating cost is reduced. The activated sludge takes the biological membrane in the attached state as the primary component, so that the contact frequency of the activated sludge and the membrane module filtering surface is reduced, and the membrane pollution process is effectively retarded by the scraping effect of the suspended particle packing.

Description

technical field [0001] The invention relates to the field of coking wastewater treatment, and provides a device and method for treating coking wastewater using a suspended filler-micro-oxygen membrane bioreactor. Background technique [0002] Coking wastewater is wastewater generated during high-temperature carbonization of coal, gas purification and refining of chemical products. Coking wastewater mainly contains organic pollutants such as phenols, polycyclic aromatic compounds, and nitrogen-containing heterocyclic compounds, and inorganic pollutants such as ammonia nitrogen, thiocyanide, and cyanide. Coking wastewater has the characteristics of high pollutant concentration and large fluctuations in water quality. It is a typical industrial organic wastewater that is toxic, harmful and difficult to degrade. [0003] At present, most coking plants in China use A / O, A / A / O and other combined processes for biochemical decarbonization and denitrification after pretreatment of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 谷启源孙体昌邱微李名月吴根
Owner UNIV OF SCI & TECH BEIJING
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