Large amount of waster water are produced by homes , agricultural processes and industrial processes
Waste water must be treated before it can be safely released back into the environment
Organic matter , harmful microorganisms and toxic chemicals have to be removed from sewage and agricultural and industrial wastewater
What are the 4 sewage treatments?
Screening and grit removal , Sedimentation to produce sewage sludge and effluent , anaerobic digestion of sewage sludge , aerobic biological treatment of effluent
