While treating sewage air is pumped into clarified water in aeration tank ..why? Share with your friends Share 0 Jahirul Mazumder answered this Please refer the link below: https://www.meritnation.com/ask-answer/question/why-is-some-amount-of-activsted-sludge-pumped-back-into-aer/microbes-in-human-welfare/10563483 1 View Full Answer Pratyush Pothal answered this for good living of aerobic bacteria 0 Rishika answered this this is because to increase the number of aerobic bacteria -1
