Membrane Bioreactors (MBR) are treatment processes, which integrate a perm-selective or semi-permeable membrane with a biological process. It is the combination of a membrane process like microfiltration or ultrafiltration with a suspended growth bioreactor, and is now widely used for municipal and industrial wastewater treatment with plant sizes up to 80’000 population equivalents Due to it being a very technical solution; it needs expert design and skilled workers. Furthermore it is a costly but efficient treatment possibility. With the MBR technology, it is possible to upgrade old wastewater plants.

Membrane Bioreactor (MBR) is the combination of activated sludge process and membrane equipment, where membranes are used for solid-liquid separation which is conventionally carried by secondary clarifiers.

Membrane Bioreactors combine conventional biological treatment (e.g. activated sludge) processes with membrane filtration to provide an advanced level of organic and suspended solids removal. When designed accordingly, these systems can also provide an advanced level of nutrient removal. In an MBR system, the membranes are submerged in an aerated biological reactor. The membranes have porosities ranging from 0.035 microns to 0.4 microns (depending on the manufacturer), which is considered between micro and ultrafiltration.
This level of filtration allows for high quality effluent to be drawn through the membranes and eliminates the sedimentation and filtration processes typically used for wastewater treatment. Because the need for sedimentation is eliminated, the biological process can operate at a much higher mixed liquor concentration. This dramatically reduces the process tankage required and allows many existing plants to be upgraded without adding new tanks. To provide optimal aeration and scour around the membranes, the mixed liquor is typically kept in the 1.0-1.2% solids range, which is 4 times that of a conventional plant.                

Membrane Bioreactor systems are widely used in municipal and industrial wastewater treatment plants.  

• Hotel,restaurant,community etc domestic sewage treatment recycle
• Industrial and mining enterprises,remote village,sentry,tourist area etc domestic sewage recycle.
• Each kind of industrial sewage (similar to domestic sewage):such as hospital sewage,pharmaceutical sewage ,washing sewage,food sewage etc 

Our production has ISO9001:2000 & CE certifications.

Qingdao Yimei Environment Project Ltd. is found in 1988.We are located in the largest port city-Qingdao China. Our factary take up 36,000 square metres and there are more than 130 kinds machine for manufacturing. As a member of Shandong Province Environmental Protection Industrial Association, we have 360 staff and  72 experienced engineers.

Our main product is the equipment for Environment Protection and Waste Water Treatment.And the product is popular all over the world,such as Africa, North America,Domestic Market,Eastern Asia,Mid East.