Application of Electrochemical Advanced Oxidation-Deep Dewatering Process in Sludge Treatment

摘要

Electrochemical advanced oxidation-deep dewatering process was used for municipal sludge treatment. The pilot-scale field experiment indicated that COD and MLSS were reduced 57.5%, 47.7% by electrochemical oxidation respectively. Compared with centrifuge dewatering, the combined technology decreased 75% of waste sludge production and its operating cost was around 199.5 RMB/t. With excellent disinfection performance, destroying bacteria/zoogloea structure by electrochemical advanced oxidation was believed to result in sludge reduction and dewatering performance improvement. Moreover, after investigating extra pollutant loading and waste gas discharge, it seems that there are no obvious side effects for WWTP operation while using this combined process.