DEODORIZING METHOD OF DEHYDRATED SLUDGE CAKE

摘要

PROBLEM TO BE SOLVED: To provide a deodorizing method which can efficiently inhibit the occurrence of offensive smell components from a dehydrated sludge cake in an actual plant over a long period of time. SOLUTION: A deodorant consisting of an aqueous liquid preparation comprising 0.38-19 wt.% nitrite and 0.02-1 wt.% water-soluble pyrithione salt (for example, sodium pyrithione and potassium pyrithione) is supplied to sludge. This deodorizing method is suitable for supplying the deodorant to the sludge and piping through a reciprocating pump. COPYRIGHT: (C)2004,JPO