MBR is a new treatment process in the field of wastewater treatment by combining of traditional biochemical processes and membrane separation processes. The working theory is still the use of microbial degradation to remove organic pollutants. As a result of membrane, activated sludge (MLSS) can be completely retained in the reactor, and greatly increased the sludge concentration and degradation efficiency of difficultly degraded products.
Compared with many traditional biological water treatment processes, MBR has the following main advantages:
Water quality and stability:
Due to the efficient separation of the membrane, the separation effect is much better than the traditional sedimentation tank. Treated water by MBR is extremely clear with suspended solids and turbidity close to zero, also bacteria and viruses are greatly removed. The treated water is better than the Ministry of Construction issued by the quality of mixed water quality standards (CJ25.1-89), and can be directly used as non-drinking municipal miscellaneous water.
At the same time, the membrane separation retains the microorganisms in the bioreactor, so that the system can maintain a high concentration of microorganisms, which improves the reaction removal efficiency of pollutants while the reaction has a good adaptability to various changes (water quality and water), and can get high quality water stably.
Less production unnecessary sludge:
The process can be run at high volume and low sludge loads with low residual sludge production (theoretically zero sludge emissions can be achieved) and reduce sludge treatment costs.
Small area needed and not subject to occasions:
The bioreactor can maintain high concentration of microbial biomass with a high-volume load, saving a lot of the area. The process is simple, compact, and not limited to area and is suitable for any occasion. It can be established on the ground, semi-underground and underground.
Removal of ammonia and refractory organic matter:
As the microorganisms are completely retained in the bioreactor, which is conducive to the growth of slow-growing microorganisms such as nitrifying bacteria and the system nitrification efficiency can be improved. At the same time, can increase retention time of refractory organic matter in the system, which is conducive to the degradation of organic matter.
Easy operation and management to achieve automatic control:
This process completely separates the hydraulic retention time (HRT) and the sludge residence time (SRT) which makes operation control more flexible and stable. It is a new technology which can easily realize the automatic control by computer, so that makes the operation management more convenient.
Easy to optimize from traditional craftsmanship:
The process can be used as a deep process of the traditional sewage treatment unit. It has a wide potential use in the city of second sewage treatment (in order to achieve a large number of urban sewage reuse) and other fields.
Membrane bioreactor Typical applications:
Treatment of used in high concentration, toxic, refractory industrial wastewater
Treatment and reuse of papermaking wastewater
Treatment and reuse of sugar wastewater
Amino acid wastewater treatment and reuse
Treatment and reuse of alcohol wastewater
Treatment and reuse of leather waste water
Treatment and reuse of synthetic fatty acid wastewater
Treatment and reuse of car washing wastewater
treatment and reuse of hotel wastewater
Treatment and reuse of mobile public toilet wastewater
Treatment and reuse of landfill site
Treatment and reuse of domestic sewage
Treatment and reuse of resort, tourist scenic spot sewage
Treatment of municipal wastewater
Trace pollutant removal in drinking water source
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