We have a lightly loaded (BOD5 -100 mg/L) municipal extended sludge plant (1500 m3/d) that sees almost zero flows during the off peak times. (3- 5 hrs/day ). As a practice we run the RAS pumps continuously throughout the day. In order to save energy is it okay to shut off the pumps when there is no flow to the plant. Would this impact the bugs?
Thanks in advance.
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