Apparatus for treating coking wastewater through immobilized MBR autotroph nitrogen removal, and method thereof

An autotrophic biological denitrification and coking wastewater technology, applied in the field of wastewater biological treatment, can solve the problems that the total nitrogen in the effluent cannot meet the standard, the operation process is complicated, and the operation cost is high, and the effluent quality is good, the process flow is simple, and the amount of aeration is small. Effect

Active Publication Date: 2015-11-18
PEKING UNIV
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Problems solved by technology

[0007] In order to overcome the problems that the total nitrogen in the effluent cannot reach the standard when the existing biological denitrification technology treats coking wastewater, the operation cost is high, and the operation process is co

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  • Apparatus for treating coking wastewater through immobilized MBR autotroph nitrogen removal, and method thereof
  • Apparatus for treating coking wastewater through immobilized MBR autotroph nitrogen removal, and method thereof
  • Apparatus for treating coking wastewater through immobilized MBR autotroph nitrogen removal, and method thereof

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing and embodiment the present invention will be further described: as image 3 As shown, a device and method for immobilized MBR autotrophic biological denitrification treatment of coking wastewater: the device consists of five parts: water inlet system, aeration system, membrane bioreactor, water outlet system, and water bath circulation system.

[0045] The water inlet system comprises a water inlet bottle (1) and a water inlet peristaltic pump (2). The water inlet bottle (1) is sealed with a rubber plug. Two holes need to be drilled on the rubber plug, and two glass tubes should be inserted, one of which is connected to a 10L air bag (to prevent water from being produced in the wide-mouth bottle). Negative pressure, which affects the water inlet speed or causes the bottle wall to break), another plastic pipe connected to the water inlet peristaltic pump (2), and the other end of the plastic pipe is connected to the water in...

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Abstract

The invention relates to an apparatus for treating coking wastewater through immobilized MBR autotroph nitrogen removal, and a method thereof. The apparatus is composed of a water feeding system, an aeration system, a membrane bioreactor, a water discharging system and a water-bath circulating system. An autotroph nitrogen removal technology is carried out by adopting the membrane bioreactor, a microbe immobilization technology is introduced, and a carrier used by microbe immobilization is arranged in the membrane bioreactor to improve the running performances of the reactor, so microenvironment suitable for growth of aerobic ammonia oxidizing bacteria and anaerobic ammonium oxidation bacteria is provided, and the membrane pollution is alleviated. The method has the advantages of no external carbon source, good wastewater treatment effect and low cost.

Description

technical field [0001] The invention belongs to the technical field of waste water biological treatment, and relates to a device and a method for treating coking waste water by using a membrane bioreactor to operate autotrophic biological denitrification combined with microbial immobilization technology. Background technique [0002] Coking wastewater is a typical toxic and refractory organic wastewater. It is mainly produced in the process of coal coke, gas purification and coking product recovery. It has a high concentration of ammonia nitrogen and complex organic components, including phenolic compounds, polycyclic aromatic compounds and Substances such as heterocyclic compounds containing sulfur and nitrogen. [0003] At present, the domestic coking industry mostly adopts pretreatment + biological treatment process to treat coking wastewater. Pretreatment includes ammonia distillation, extraction and dephenolization, and final cold water decyanation. Biological treatmen...

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Application Information

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IPC IPC(8): C02F3/30C02F3/34
Inventor 刘思彤牛昭张作涛叶正芳倪晋仁
Owner PEKING UNIV
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