Apparatus for realizing short-cut nitrification by membrane bioreactor and method thereof

Abstract

The invention relates to an apparatus for realizing short-cut nitrification by a membrane bioreactor and method thereof, the apparatus is provided with an anoxic pool, an aerobic pool and an aeration apparatus consisting of an aerator and a blower, a membrane pool and a membrane pool backflow apparatus consisting of a water pump and pipelines, an online dissolved oxygen meter is provided with the aerobic pool, a controllable electric valve and an aeration controller are provided in the aeration apparatus; a backflow controller and a reflux water-locator are provided in the membrane pool backflow apparatus and the membrane pool backflow apparatus is performed a signal connection with an online dissolved oxygen densimeter. The method for realizing the short-cut nitrification comprises: determining a control data through an actual test, setting data; self-operating under an online control. The present invention can be used for wastewater treatment plants and applied to treat nitrogen containing organic industrial wastewater from aquaculture wastewater, monosodium glutamate wastewater, coking wastewater and the like. On the basis of reaching better effect for treating sewage, the apparatus for realizing short-cut nitrification by membrane bioreactor can reduce the aeration energy consumption and add the external carbon sources.

Description

technical field [0001] The invention relates to a biochemical sewage biological treatment technology, specifically a device and method for realizing and controlling short-range nitrification in a membrane bioreactor, which is suitable for urban sewage treatment plants and other nitrogen-containing wastewater such as aquaculture wastewater, monosodium glutamate wastewater, coking wastewater, etc. Treatment of organic industrial wastewater. Background technique [0002] Due to the shortage of fresh water resources and the continuous expansion of eutrophication of water bodies, the shortage of water resources has been exacerbated, and the discharge standards of urban sewage plants have been continuously improved. In order to fundamentally solve the problem of water resources and achieve the sustainable use of water, a water strategy is proposed to meet the surface IV water quality standard after all the sewage is regenerated and treated. It is the trend of the times to use sew...

AI Technical Summary

Problems solved by technology

The disadvantages of membrane bioreactors are mainly high energy consumption and high operating costs. Combining short-range nitrification with membrane bioreactors can reduce energy consumption, but there are few reports on short-range biological denitrification in membrane bioreactors.

[0006] The main reason why the nitrogen content of urban sewage plants is difficult to reach the standard is that the denitrification carbon source is insufficient, and the low carbon-nitrogen ratio of the influent is low

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