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Where is the real value of MBR flat membrane in China
Release time:
2023-05-11
Where is the real value of MBR flat membrane in China MBR flat membrane is a commonly used membrane for urban sewage treatment in China. From the perspective of separation mechanism, MBR flat membrane mainly includes reaction membrane, ion exchange membrane, permeable membrane and so on. The popularization and application of these membranes can effectively reduce the pollution of urban sewage to groundwater, and can also effectively realize the reuse of sewage.
Where is the real value of MBR flat membrane in China
MBR flat membrane is a commonly used membrane for urban sewage treatment in China. From the perspective of separation mechanism, MBR flat membrane mainly includes reaction membrane, ion exchange membrane, permeable membrane and so on. The popularization and application of these membranes can effectively reduce the pollution of urban sewage to groundwater, and can also effectively realize the reuse of sewage, thus effectively reducing the waste of water resources. It is one of the good measures to adhere to the national sustainable development policy. At present, groundwater in China is polluted to varying degrees. MBR flat membrane treatment can realize the full utilization of water resources. At the same time, the close treatment of sewage can also prevent the long-distance transportation of sewage leakage, resulting in groundwater pollution. Wastewater reuse has been widely used in many water-scarce areas. Facing the pollution of industrial waste gas, China has taken active control measures. Facing the pollution of precious water resources, all kinds of control measures are not backward. Sustainable development has always been the basic national policy of our country. The rapid development of industry has improved people's living standards by more than one, but the ensuing environmental problems are the key to sustainable development. If we do not properly address the problems of industrial water pollution and air pollution, we will eat our own fruit.
MBR flat membrane bioreactor is a kind of wastewater treatment method worth popularizing at present. Below we will introduce its functions and features. Membrane bioreactor (MBR) is a new type of wastewater treatment system that combines membrane separation technology with biological treatment technology. Its working principle is: the membrane module replaces the traditional biological treatment technology at the end of the secondary sedimentation tank, maintains the high concentration of activated sludge in the bioreactor, increases the organic load of biological treatment, thereby reducing the area of sewage treatment facilities and reducing the amount of sewage treatment. Excess sludge is generated by keeping the sludge load low. The membrane separation equipment of aerobic tank is mainly used to intercept the activated sludge and high molecular organic matter in the aerobic tank.
The activated sludge concentration in MBR flat membrane system can be increased to 8000-10000mg/L or even higher, and the sludge age can be extended to more than 30 days. MBR flat membrane bioreactor can maintain the growth cycle of microorganisms for a long time and realize the deep purification of wastewater. At the same time, nitrifying bacteria can thrive in the system. It has obvious nitrification and can remove deep phosphorus and nitrogen. Sewage reuse refers to the treatment of urban sewage and industrial sewage by MBR flat membrane bioreactor and other equipment, and then used for greening, washing, replenishing ornamental water bodies, the use of clean drinking water and other non-drinking uses with high water quality requirements. The nearby use of urban sewage and industrial sewage can avoid long-distance water transportation, and the close treatment can make full use of water resources.
The main pollution in the operation of MBR flat membrane module is the microbial pollution of sludge layer, inner surface and outer surface. And when the MBR flat membrane module runs for more than half a year or stops running for more than two months, the inner surface of the MBR flat membrane is observed by the corresponding electron microscope. It was found that the membrane surface of the membrane bioreactor was full of various microorganisms and had a large number of filamentous bacteria staggered. The scaffold, cocci as an attachment, grows in tandem on it to form a relatively dense layer, but Bacillus brevis inserts into the gap and blocks the pores on the inner surface more.
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