First by activated sludge removal of biodegradable organic pollutants in water, and then adopt membrane after purification of water and activated sludge for solid-liquid separation.
For tubular hollow fiber membrane silk, microporous tube wall, able to intercept live activated sludge, and the vast majority of suspended solids, crystal clear water.For the continuous and stable operation of membrane in the long-term, in the bottom of the film to be a certain amount of aeration, such, satisfy biological oxygen demand (cod), and the membrane silk continually jitter, prevent activated sludge attached on the surface of membrane pollution.
2. The MBR process characteristics:
(1) cover small floor area, save space
Biological treatment, high concentration waste water concentration is higher, the greater the need to deal with the size of the slot.The MBR process, due to the high sludge concentration, can work under high load, so can greatly save area.
(2) the effluent is stable and high transparency
Hollow fiber membrane can intercept almost all of the microbes, especially for difficult to precipitation, slow proliferation of microbes, so the system of biological abundance, activated sludge domesticated, greatly shorten the process of increment, the depth of the processing and system impact resistant ability to strengthen, the effluent water quality is very stable.
(3) the management convenient operation, simple maintenance
The traditional aerobic activated sludge treatment process, in the case of high sludge loading operation will appear the phenomenon of sludge bulking, cause the system can not run normally, the water is not up to standard.And MBR process made with mud through the suction of membrane separation, as a result, sludge bulking in MBR effluent is far less than the traditional process, the influence of operation management are very convenient.
A high degree of automation, simple maintenance.