High density submerged membrane bioreactor
The high-density membrane bioreactor is a new type of highly efficient sewage treatment and water purification plant filtration standard raising process that combines the high efficiency membrane separation technology with the traditional activated sludge process. It uses membrane modules to replace the traditional filtration system, which greatly improves the solid-liquid separation capacity of the system, so that the system effluent quality and volume load are greatly improved, and the effluent is stable and reliable. Due to the filtration effect of membrane, microorganisms are completely trapped in the biological reaction tank, which realizes the complete separation of hydraulic retention time and activated sludge age. At the same time, the sludge concentration in the biological reaction tank is improved, and the efficiency of the biological reaction tank is improved by biological multiplication.
The high-density membrane bioreactor has the advantages of high pollutant removal efficiency, strong nitrification capacity, stable effluent quality, low excess sludge output, compact equipment, simple operation, etc. It is applied to the filtration of organic domestic sewage and domestic water purification plants with large treatment capacity and wide range, and has great application potential in realizing water resource.
High density immersed membrane features:
1. The quality of treated water is good
The high-density immersed membrane can operate at high MLSS concentration (8000~12000 mg/L), which can improve the quality of treated water. It can reduce COD concentration. High concentration activated sludge can partially decompose macromolecular refractory substances (humus, etc.). In sewage treatment, the treated water quality can reach the quality of reclaimed water.
2. Small floor area
The high-density immersed membrane can make up for the short plate of the sedimentation tank, can operate at high MLSS concentration, and can reduce the volume of the aerobic tank. It can improve the quality of treated water. Compared with the standard activated sludge method, it can reduce the floor area by 50~80%. The transformation project can also transform the sedimentation tank into a membrane tank.
3. Simple maintenance and management
The sludge properties of each standard activated sludge method are different. According to the sludge properties, it is difficult for some sludge to conduct solid-liquid separation (such as sludge bulking). Therefore, relevant treatment experience is very important to maintain the quality of treated water. It is easy to maintain and manage by using membrane solid-liquid separation instead of precipitation separation, and the effluent quality is stable. Stable sewage treatment system can be provided.
