Membrane bioreactor Working principle and application field of
In the field of wastewater treatment and water resources reuse, MBR, also known as membrane bio reactor, is a new water treatment technology combining membrane separation unit and biological treatment unit.
Working principle of biofilm reactor
Membrane bio reactor (MBR) is a new type of wastewater treatment system which combines membrane separation technology with biological treatment technology. The membrane module is used to replace the terminal secondary sedimentation tank of traditional biological treatment technology to maintain high activated sludge concentration in the bioreactor, improve the organic load of biological treatment, so as to reduce the occupied area of sewage treatment facilities, and reduce the amount of excess sludge by maintaining low sludge load. Membrane separation equipment is mainly used to intercept activated sludge and macromolecular organic matter in water. The concentration of activated sludge (MLSS) in membrane bioreactor system can be increased to 8000 ~ 10000 mg / L or even higher, and the sludge age (SRT) can be extended to more than 30 days. Due to its effective interception, membrane bioreactor can retain microorganisms with long generation cycle and realize deep purification of wastewater. At the same time, nitrifying bacteria can fully reproduce in the system, and its nitrification effect is obvious, which provides the possibility for deep phosphorus and nitrogen removal.
Application fields of membrane bioreactor
Industrial wastewater: wastewater treatment of various beverage factories, wineries, food factories, animal husbandry, slaughterhouse wastewater treatment, dyeing and finishing, leather, pulp mill, pharmaceutical industry, high concentration organic wastewater treatment, process improvement of old wastewater treatment plant, pretreatment of reverse osmosis system.
Wastewater recovery: large municipal wastewater treatment and reuse, community domestic reclaimed water reuse, department stores, office buildings wastewater treatment and reuse, restaurant or scenic area wastewater treatment and reuse, surface water purification treatment, car wash plant ship sewage recycling. The discharge water is directly filtered to completely replace sand filtration. It has the advantages of less manpower, super fast reverse washing and no reverse washing water. The SS is reduced to below 10, but it is often close to 0 to replace the traditional ro pretreatment. Replace the pretreatment of pure water manufacturing. Sand filtration of groundwater. Combined with MBR construction method, no sedimentation tank, sludge thickening tank, sand filter and other land saving. Cod and BOD can be removed greatly. Especially for the BOD removal rate is very significant, below 20 is the normal value. MBR process combined with a / O and A2 / O processes can greatly reduce nitrogen and phosphorus, which is suitable for water quality and water source protection areas. In Europe, the United States, the mainland is booming, everyone is brainstorming how to use it. For example: aquaculture water purification, mining industry, drinking water machine and so on. Deformation of hollow fiber membrane applications, such as bamboo shoots.
The working principle and application field of membrane bioreactor are introduced Polyferric sulfate manufacturer -Henan Zhengyuan water purification Co., Ltd. for your analysis, hope to help you!