Introduction to the advantages and features of MBR tablet films
Published Time:
2022-07-12
MBR, as a low-pollution purification technology integrating separation and concentration, has been widely used in wastewater treatment. Its technical characteristics are:
1. Better anti-pollution performance
The structure of the MBR flat membrane module is composed of multiple membrane elements arranged and assembled, realizing controllable inter-membrane gaps, facilitating online cleaning of the membrane surface with gas-liquid mixing flow, and having excellent anti-pollution performance. In addition, the MBR flat membrane bioreactor can effectively remove attachments from the membrane surface by adjusting the aeration intensity at the bottom of the component and the scouring effect of the gas-water mixture on the membrane surface, ensuring long-term effective operation of the membrane.
2. Good mechanical stability, no broken filaments
The MBR flat membrane uses non-woven fabric as the guiding layer and 3 mm ~ 5 mm ABS board as the support layer. Therefore, the fiber membrane component has high strength and will not break, ensuring good effluent water quality.
3. Easier cleaning method, longer cleaning cycle
On the one hand, online cleaning of the MBR flat membrane can be achieved by controlling the aeration volume of the aeration system at the bottom of the component to control the pollution on the membrane surface. On the other hand, online chemical cleaning can be achieved, which only requires pouring the prepared reagent back into the membrane from the suction port and soaking it for a period of time.
In addition, the cleaning of the MBR flat membrane can not only lift the membrane component for cleaning but also remove the membrane component for cleaning, solving the problem of insufficient space on the construction site for lifting. At the same time, the cleaning cycle of the reactor is longer, and the cleaning cycle can reach more than 3 months.
4. Long service life, low operating cost
The replacement cycle is long, greatly reducing the operating cost and ensuring good operating conditions. For example, the average lifespan of flat membranes in domestic sewage treatment projects is about 5 years, and about 3 years in industrial wastewater and medical wastewater.
5. The diaphragm replacement process is simple.
Due to the unique design of the flat membrane component, during the membrane damage and replacement process, the membrane can be replaced individually without replacing the bracket.
Advantages of MBR flat membrane:
1. Small footprint, space saving: It can greatly increase the sludge concentration (biomass) of the activated sludge tank, eliminating the need for a secondary sedimentation tank, which can greatly save land area.
2. Stable and clear effluent water quality: It intercepts almost all microorganisms, especially those that are difficult to settle and grow slowly. Therefore, the biophase in the system is very rich, the domestication and increment process of activated sludge is greatly shortened, the treatment depth and shock resistance of the system are enhanced, and the effluent water quality is very stable.
3. Convenient operation and management, simple maintenance: Traditional aerobic activated sludge treatment processes, when operating under high sludge load, will cause sludge expansion, leading to abnormal operation of the system and failure to meet effluent standards. In the MBR flat membrane process, sludge and water are separated by membrane suction. Therefore, the impact of sludge expansion on effluent is far less than that of traditional processes, and operation and management are very convenient. The automation level is high, and maintenance is simple.
