You searched for: “bioaeration”
bioaeration (s) (noun) (no pl)
A modification of the activated sludge method of purifying sewage: Bioaeration is a system of purifying raw sewage by oxidation in which crude sewage is passed through special centrifugal pumps.

Bioaeration is a sewage treatment method in which microorganisms oxidize the organic matter.

This entry is located in the following units: aero-, aer-, aeri- (page 12) bio-, bi-, -bia, -bial, -bian, -bion, -biont, -bius, -biosis, -bium, -biotic, -biotical (page 5)