... , antifreeze, lower noise. Product DesciptionThe self-priming Submersible pump can be used for oxygenating and mixing in sewage water ... treatment. It integrates the pump, Air-blower, Gas-liquid mixers as one. It ... sewage water treatment, such as Pre-gas supply, Activated Sludge Treatment, Stability Sludge Treatment, gas floats, neutralize, Ozone treatment,Oxidized pond ...