Effect of Conditioners on Aerobic Composting of Sew age Sludge
ZHANG Man
WEI Ming-bao
MA Chuang
LI Ming-feng
ZHANG Hong-zhong
ZHAO Ji-hong
Abstract：In order to study the effect of different conditioners on aerobic composting of sewage sludge ,three kinds of conditioners were selected ,which were sawdust(treatment 1) ,peanut shells (treatment 2) ,restaurant garbage + sawdust (treatment 3) ,respectively ,and the temperature , moisture content ,pH ,EC ,TN content ,GI and microorganism number during the composting were measured .The results showed that different conditioners had different effects on temperature .As the fluffy structure of peanut shell was bad for thermal insulation ,treatment 2 was failed to achieve a high temperature ,and failed to meet the requirement of innocent treatment ,the effect was bad .The temperature of treatment 1 and 3 rose rapidly ,treatment 1 maintained above 55 ℃for 5 days ,treatment 3 maintained above 50 ℃ for 7 days ,both treatment 1 and 3 met the require-ment of innocent treatment ;the moisture content of treatment 1 and 3 was changed from 61.04% ,59.95% to 54 .67% ,56 .73% respectively ,the pile volume was significantly reduced ,the composting minimization was realized ;pH value of treatment 1 and 3 were in the proper range ,there was no need to adjust ;when the composting finished ,EC of treatment 1 and 3 was less than 3 .00 mS/cm ,GI was more than 0 .50 ,indicating that the composting product would not cause tox-ic effects on plants ;treatment 3 had the least loss in nitrogen ,treatment 1 second .In a word ,the effect order of the three conditioners was sawdust ,restaurant garbage ,peanut shells .
Keywords：sewage sludgeaerobic compostingconditionersawdustrestaurant garbageinno-centinnocent treatment
Publication Date：2014-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 48-53 )