강원도 하수처리장 내 탈수슬러지 성상분석

초록

This study was carried out for sewage sludges in 30 municipal wastewater treatment plants in Gangwon-do to investigate characteristics of dewatered sludge. The proximate analysis for the sludges included 82.3 ± 3.5% for moisture and 69.4 ± 7.5% for volatile matter as dry basis. The ultimate analysis of the sludges determined the order of C > O > N > H > S. The average carbon-to- nitrogen ratio in all sludge samples was 6.4 ± 0.2. The average calorific value for the sludges was 3,880±470 kcal/kg as a dry basis. The average concentrations of the heavy metals for the sludges were in order of Zn > Cu > Cr > Pb > Ni > Cr > Cd > As > Hg.

키워드