Application Status and Existing Problems of Membrane Bioreactor
Membrane bioreactor (MBR) is a highly efficient wastewater treatment process newly developed in recent years. It is mainly used for the treatment of domestic sewage, water supply denitrification, oily wastewater and toxic industrial wastewater, Purified water is reused as reclaimed water. Membrane bioreactor has many advantages that cannot be compared with traditional process, but there are also problems such as high membrane cost, high energy consumption and membrane pollution in practical application. adopt Reasonable selection of aeration and mixing devices and adjustment of operating parameters can reduce energy consumption. In addition, the integrated MBR developed in Japan also reduces the energy consumption per unit of water production. The main solutions to membrane pollution are There are five ways to choose the appropriate membrane materials, pretreat the feed liquid, select the appropriate operating conditions, reduce the dead corners and dead space gaps in the equipment structure, and use disinfectants. order Previously, due to technology, equipment and raw materials, it is difficult to reduce membrane cost in a short time.
