The utilization of membrane bioreactor can remove more than 90% ammonia nitrogen from water, and it has great advantages in shock load resistance. Compared with activated sludge process, MBR has a strong ability to remove organic matter, and the effluent quality is good and stable, so that sludge age and hydraulic retention time can be completely separated.
In addition, in the process of sludge mixtures filtration, the pore size of the biofacies deposited on the membrane surface is reduced. MBR process can effectively intercept pathogenic microorganisms, so it is more stable in virus removal, which makes up for the shortcomings of traditional chlorination disinfection process.
In the follow-up disinfection, compared with activated sludge treatment process, MBR process can also save disinfectant greatly and achieve the goal of microbial inactivation in a short time of contact. Therefore, it is of great significance to reduce investment and the area occupied by contact equipment and the related costs of disinfection process.