Fig. 1. Scheme of experimental installation of a deep mineralization of activated sludge: 1 – mineralizer; 2 – flooded airlift aeration system; 3
– mixer; 4 – sludge supply pipeline; 5 – air supply; 6 – saturator pressure flotation; 7 – flotation column; 8 – submission of saturated sludge
mixture; 9 – adjusting valve; 10 – dissolved oxygen sensor; 11 – paired sensor dissolved oxygen, pH and salinity; 12 – pipeline removal activated
sludge and sludge water.