Membrane Bioreactors are often discussed in the context of:

Question

Accepted Answer

A membrane bioreactor (MBR) is a new type of wastewater treatment technology combining membrane separation process with conventional activated sludge (CAS) treatment process. Due to the fact that the membrane pore size may be below 0.1μm, MBR can effectively produce a high-quality clarified effluent. Hence option (d) is the correct answer.