An anaerobic-anoxic-aerobic-mbr membrane module sewage treatment process
A technology for sewage treatment and membrane modules, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve membrane pollution, affect the sewage treatment effect of sewage system, and consume carbon sources question
Active Publication Date: 2017-08-04
SHANGHAI SUPRATEC MEMBRANE TECH CO LTD
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Problems solved by technology
However, the frequent problem brought about by the introduction of membrane bioreactor technology is membrane fouling. In order to effectively solve membrane fouling, it is necessary to use air blowing and aeration to purge the membrane surface, which also results in higher air pollution in the MBR membrane pool. The water ratio and the air-water ratio determine the energy consumption of blast aeration, and will also consume the available carbon source in the sewage, which will ultimately affect the sewage treatment effect of the entire sewage system. Therefore, the effective design of the air-water ratio in the MBR membrane pool becomes Core Issues in AAO-MBR Process
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Embodiment Construction
[0021] The invention provides an anaerobic-anoxic-aerobic-MBR membrane module sewage treatment process, which combines figure 1 and figure 2 , do the following:
[0022] Step S101 is executed, the sewage is input into the anaerobic tank 1 through the first sewage inlet pipe 11, and the phosphorus accumulating bacteria in the anaerobic tank 1 absorb the organic matters in the sewage and synthesize them into PHAs (polyhydroxyalkanoate) and store them in the In the cell, orthophosphate is released at the same time, and organic nitrogen is also converted into ammonia nitrogen at this time.
[0023] Execute step S102, the sewage is input into the anoxic pool 2 through the second sewage water inlet pipe 12, and those skilled in the art understand that the denitrifying bacteria in the anoxic pool 2 use the organic matter in the sewage to convert nitrate nitrogen into nitrogen Realize the removal of nitrogen, and at the same time, the denitrifying phosphorus accumulating bacteria u...
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Abstract
The invention provides an anaerobic-anoxic-aerobic-MBR (membrane bioreactor) membrane component sewage treatment process. The process has the design points that an MBR membrane component is subjected to blast aeration in an MBR membrane tank to ensure that the dissolved oxygen concentration of the MBR membrane tank reaches 5.0-10mg / L, wherein the dissolved oxygen concentration=dissolved oxygen utilization amount * period of intake / active volume of the MBR membrane tank; and dissolved oxygen utilization amount=comprehensive coefficient * air input * effective water depth of the MBR membrane tank, the comprehensive coefficient=f1f2 / f3, f1=0.015-0.020kg / m<2>, f2=0.45-0.65, and f3=1.2-1.4. By virtue of the two formulas, a designer can ensure the air input and the period of intake during process design.
Description
technical field [0001] The invention belongs to the field of sewage treatment, and is especially applied to township sewage treatment, and is an anaerobic-anoxic-aerobic sewage treatment process with MBR membrane modules. Background technique [0002] Anaerobic-anoxic-aerobic combination process (AAO) has been a widely used sewage treatment process. It evolved from anoxic-aerobic process. By setting an anaerobic reaction zone at the front end, some refractory parts in wastewater are removed. Organic matter, improve the biodegradability of wastewater, and provide a carbon source suitable for the denitrification process in the subsequent anoxic stage, and finally achieve the purpose of removing COD, BOD, N, and P. [0003] The application of membrane separation technology in the field of sewage treatment began in the late 1960s. Through the high-efficiency retention characteristics of membrane modules, excellent treatment effects have been obtained in the water treatment proce...
Claims
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IPC IPC(8): C02F9/14
Inventor 张显超
Owner SHANGHAI SUPRATEC MEMBRANE TECH CO LTD