膜 - 生物反应器工艺（Membr ane Bio-Reactor，简称MBR）是膜分离技术与生物技术有机结合的新型废水处理技术。它利用膜分离设备将生化反应池中的活性污泥和大分子有机物质截留住，省掉二沉池及不需三级处理过程。活性污泥浓度因此大大提高，水力停留时间（HRT）和污泥停留时间（SRT）可以分别控制，而难降解的物质在反应器中不断反应、降解。因此，膜 - 生物反应器工艺通过膜分离技术大大强化了生物反应器的功能。与传统的生物处理方法相比，具有生化效率高、抗负荷冲击能力强、出水水质稳定、占地面积小、排泥周期长、易实现自动控制等优点，是目前最有前途的废水处理新技术之一。
Membrane bioreactor process (Membr ane Bio-Reactor, referred to as MBR) is a new wastewater treatment technology and the organic combination of membrane separation technology and biological technology. It will be the pool of activated sludge biochemical reactions andmacromolecular organic matter trapped by the membrane separation equipment, saves two sedimentation tank and does not need to be level three process. Activated sludge concentration thus greatly improved, hydraulic retention time (HRT) and sludge retention time (SRT) can be controlled separately, while the refractory material continuous reaction, degradation in the reactor.Therefore, the membrane bioreactor process through the membrane separation technology has greatly enhanced the function of bioreactor. Compared with the traditional biological treatment method, has high purification efficiency, anti shock loading ability is strong, stable water quality of effluent, small occupation area, mud cycle is long, easy to realize automatic control and other advantages, is one of the new wastewater treatment technology is currently the most promising.
The advantages of MBR:
one, efficient solid-liquid separation, the separation effect is far better than the conventional sedimentation tanks, good quality of effluent, the effluent suspended solids and turbidity are close to zero, can be reused directly, realize the sewage resources.
two, retention function of membrane, the microbial completely retained in the bioreactor, realize thereactor hydraulic retention time (HRT) and sludge age (SRT) are completely separated, flexible control stability.
there, because the MBR will be the traditional sewage treatment aeration tank and two sedimentation tank Become, and replaces the three stage treatment of all process facilities, thus can greatly reduce the occupied area, save construction investment.
four, in favor of nitrifying bacteria and nitrification efficiency of interception breeding, high. Through the change of operation mode can also be off the ammonia and phosphorus removal function.
five, because the sludge age can be very long, thus greatly improving the efficiency of refractoryorganic matter degradation.
six, the reactor operated at high volume load, low sludge load, long sludge age, excess sludge yield is very low, because the sludge age can be infinitely long, in theory, can realize zero discharge of sludge.
seven, the realization of PLC control system, convenient operation and management.
The scope of application
one, in the small town, wastewater treatment and reuse;
two, domestic sewage, car washing wastewater treatment and reuse;
there, the high concentration organic wastewater treatment and reuse;
four.The treatment and reuse of organic wastewater, printing and dyeing
pharmaceutical,slaughter wastewater etc.