AERATION PROCESS AND ITS DEVICE

摘要

PURPOSE: To feed fine air bubbles for aeration in the downstream basin in the vicinity of a water level of the tank for circulation water stream generating in the tank, in a diffuser installed in the tank bottom and to enhance the dissolution ratio of oxygen. CONSTITUTION: Fine air bubbles for aeration generated over the whole tank inside by the diffuser 2 installed in the tank 1 bottom are ejected in the circulation water stream area and they are carried on the circulation water steam. They are retained in the circulation water stream in the tank and the contact time with water is held for a longer time and the dissolution ratio of oxygen is enhanced.