Observation of dissolved oxygen in stagnant water body by use of airlift

Abstract

This observation was carried out to improve water quality in the tidal reach by aeration where pollutant settles down and accumulates on a river bed because of low river velocity. We found out by field test flow, an airlift type is usefull to improve water quality as remedy of these problems in such reach.A few typical results are presented mainly refering to the dissolved oxygen in the placid water by using the circulated flow of the airlift.