Disinfection of Sewage Sludge Using Microwave Enhanced Advanced Ozidation Process
The microwave enhanced advanced oxidation process (MW/H2O2-AOP) was used to treat municipal sewage sludge for pathogen destruction. Two levels of microwave heating temperatures of 55℃ and 70℃, and six levels of hydrogen peroxide dosages (0％ to 0.1％) were used. Fecal coliform concentrations were found below detection limit (1000 CFU/L) immediately after treatment when sludge was treated at 70℃ with more than 0.04％ of hydrogen peroxide. Significant regrowth of fecal coliforms was observed after the treated samples were stored at ambient temperature for 72 hours. However, no regrowth was observed with hydrogen peroxide dosages higher than 0.08％, suggesting complete elimination of fecal coliforms. The MW/H2O2-AOP might be a very promising technology in sewage sludge treatment; not only can it solubilize nutrients for subsequent recovery, but also destroy pathogens, for producing Class A sludge.
Sludge disinfection fecal coliform regrowth microwave hydrogen perozide
Y.Yu K.V.Lo P.H.Liao
Department of Civil Engineering University of British Columbia Vancouver,Canada
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）