Method and apparatus for nitration and nitrate nitrogen enrichment of one-piece combined membrane bioreactor

A bioreactor, combined membrane technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc. The effect of nitrification, easy operation and simple device structure

Active Publication Date: 2013-11-20
北京北华中清环境工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Adsorption and ion exchange methods (such as zeolite, ion exchange resin), can separate and concentrate NO 3 - , but there are problems such as limited adsorption capacity, high regeneration frequency, and secondary pollution caused by chemical regeneration. Therefore, most of the current applications of zeolite denitrification are for slightly polluted river water, landscape water, and effluent from secondary sedime

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  • Method and apparatus for nitration and nitrate nitrogen enrichment of one-piece combined membrane bioreactor
  • Method and apparatus for nitration and nitrate nitrogen enrichment of one-piece combined membrane bioreactor
  • Method and apparatus for nitration and nitrate nitrogen enrichment of one-piece combined membrane bioreactor

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Embodiment Construction

[0031] Attached below figure 1 , 2 , 3, 4 and examples are described in detail to further understand the present invention.

[0032] A membrane module A 8 of the present invention ( image 3 , Figure 4 ), is made up of anion exchange membrane 18, ultrafiltration membrane or microfiltration membrane 17 and support plate 16 with diversion groove 20 and hole 21; anion exchange membrane 18 and ultrafiltration membrane or microfiltration membrane 17 are respectively fixed on Both sides of the support plate 16.

[0033] In order to achieve better experimental results, the anion exchange membrane 18 used in the present invention is an anion exchange membrane of the type ACS provided by Astom, Japan, and the ultrafiltration membrane 17 is a 0.1 μm pore size, membrane pass membrane provided by Nanjing Ruijiete. The volume is 18.75-20.83 L / m 2 .h ultrafiltration membrane.

[0034] An integrated combined membrane bioreactor nitrification and nitrate nitrogen enrichment device prov...

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Abstract

The invention relates to a method and an apparatus for nitration and nitrate nitrogen enrichment of a one-piece combined membrane bioreactor, and belongs to the technical field of sewage treatment. A method for nitration and nitrate nitrogen enrichment of a split-type combined membrane bioreactor is characterized by comprising the following steps: raw water introduction; connection of a membrane module A, flow setting and aerobic nitration reaction ; power supply connection and current setting; setting of pumping stop time ratio and cleaning of the membrane module A; and re-operation. A special-purpose implementation apparatus is provided to complete the above steps. The method and apparatus can convert ammonia nitrogen in waste water into nitrate nitrogen and carry out nitrate nitrogen enrichment in a single treatment unit, and overcomes insufficiencies and defects of a low C/N ratio waste water treatment method and a NO3<-> separation and enrichment method in the prior art; in addition, the apparatus has a simple structure and is convenient for actual operations.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method and a device for nitrifying and enriching nitrate nitrogen in an integrated combined membrane bioreactor. Background technique [0002] The problem of water eutrophication has become increasingly prominent. In recent years, a series of problems caused by it have seriously affected the daily life of residents. Nitrogen and phosphorus are the main factors that cause eutrophication of water bodies. Therefore, it is particularly important to meet the discharge standards of nitrogen and phosphorus in sewage. To treat low C / N ratio wastewater, organic carbon sources are usually added to achieve efficient denitrification. However, this consumes limited organic resources and increases operating costs. [0003] Studies have found that ammonia nitrogen in wastewater is easily converted into nitrate nitrogen under the action of aerobic activated sludge (mainly...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F3/10
CPCY02W10/10
Inventor 张岩刘焕光张中朱敏陈敬甘志明孙凤侠史扬谢杭冀
Owner 北京北华中清环境工程技术有限公司
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