METHOD FOR MEASURING EASILY-DECOMPOSABLE ORGANIC SUBSTANCE IN SEWAGE

摘要

PROBLEM TO BE SOLVED: To measure the concentration of easily-decomposable organic substance Ss in a sewage in a short time. SOLUTION: Microorganisms are allowed to be present for biological treatment in the sewage in a treatment tank 12, and the concentration of the easily- decomposable organic substance Ss in the poured sewage is obtained by the formula: Concentration=Quantity of consumed oxygen/(1-yield) by using the quantity of oxygen consumed when the sewage to be measured is poured in the treatment tank 12, and the yield.