Q. A sewage treatment process in which a part of decomposer bacteria present in the waste is recycled into the starting of the process is called

 2366  203 Delhi UMET/DPMTDelhi UMET/DPMT 2009Environmental Issues Report Error

Solution:

The activated sludge treatment involves the decomposition of organic matter through sewage fungus and decomposer bacteria by aeration in oxidation tanks. This aeration helps in the oxidation of sludge.