step in wastewater treatment in order :- air is mixed vigorously into tanks with wastewater effluent 2) chlorine or bleach is added to the wastewater effluent. 3) sand and grit are removed from the wastewater effluent.4) bacteria are settled out of wastewater effluent. 5) oils and greases float to surface of wastewater effluent ( put them in order with process )
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yes the process is correct
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