Membrane aeration biomembrane process and apparatus for sewerage short-cut denitrification

A technology of membrane aerated biofilm and biofilm reactor, which is applied in the direction of water/sewage multi-stage treatment, neutralized water/sewage treatment, water/sludge/sewage treatment, etc., and can solve the problem of starting and controlling the nitrosation process. Clear, difficult to achieve nitrosation performance, high infrastructure investment and other issues, to achieve the effects of avoiding substrate competition, high short-range denitrification efficiency, and high denitrification efficiency

Active Publication Date: 2009-05-27
TONGJI UNIV
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Problems solved by technology

The main disadvantages of the traditional nitrification and denitrification denitrification process are: the process is long, the mixed liquid needs to be refluxed, the energy consumption is large, the sludge generated is large, the area is large, and the capital investment is high. If the denitrification stage carbon Insufficient carbon

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  • Membrane aeration biomembrane process and apparatus for sewerage short-cut denitrification

Examples

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Embodiment 1

[0023] Example 1: Short-range denitrification treatment of high ammonia nitrogen wastewater by membrane aeration biofilm process.

[0024] The control device is mainly composed of an inlet pump 1, a membrane aeration biofilm area 3, a denitrification biofilm area 8, a mixed liquid circulation pump 10 and its connecting pipelines. 2 is added to the membrane aeration biofilm reactor 3, in which the bubble-free aeration membrane 4 is installed, and microbial biofilm will grow on its surface to play the role of nitrosation. Air is passed through the air compressor (or air pump) 5 in the bubble-free aeration membrane, and the pressure of the air is displayed by a pressure gauge 6 and regulated by an air pressure regulating valve 7 . After the sewage flows through the membrane aeration biofilm reactor 3, it enters the denitrification biofilm area 8, and the denitrification area 8 is filled with a biofilm carrier 9, and a denitrification biofilm grows on the surface of the biofilm ca...

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Abstract

The invention belongs to the field of environmental protection and sewage treatment technology and equipment, and in particular relates to membrane aeration biomembrane technology and a membrane aeration biomembrane device for short-range denitrogenation of sewage. The membrane aeration biomembrane technology mainly utilizes an ammonia oxidation bacterium biomembrane grown on the surface of an aeration membrane to complete nitrosation of ammonia nitrogen, controls oxidation of the ammonia nitrogen in the nitrosation state, and utilizes a denitrifying biomembrane to complete the process of short-range denitrogenation. After the pH is adjusted, high ammonia nitrogen wastewater is added into a membrane aeration biomembrane reactor through an intake pump and flows into a denitrifying biomembrane reactor, and simultaneously full contact of a mixed solution in a system and the biomembrane is realized by utilization of a mixed solution circulating pump. Under the condition of stable operation, dissolved oxygen in the mixed solution in the system is controlled to be less than 0.1 milligram per liter. The membrane aeration biomembrane technology and the membrane aeration biomembrane device have the characteristics of simple and quick technique, high and stable denitrogenation efficiency, strong impact load resistance, low energy consumption, low operating cost, small sludge output and so on.

Description

technical field [0001] The invention belongs to the technical fields of environmental protection, water treatment technology and equipment, and specifically relates to a membrane aeration biofilm treatment process and a device thereof for sewage denitrification treatment. Background technique [0002] The traditional sewage denitrification process is realized through two stages of nitrification and denitrification, respectively by nitrifying bacteria and denitrifying bacteria in different reactors (segmented in space), or in the same reactor in different time periods , nitrogen removal is achieved by alternating aerobic and anaerobic environments. The main disadvantages of the traditional nitrification and denitrification denitrification process are: the process is long, the mixed liquid needs to be refluxed, the energy consumption is large, the sludge generated is large, the area is large, and the capital investment is high. If the denitrification stage carbon If the sourc...

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/66
Inventor 王荣昌张亚雷赵建夫
Owner TONGJI UNIV
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