ASAHI KASEI CLEAN CHEMICAL CO LTD;ASAHI KASEI CHEMICALS CORP
发明人:
FUJII KOJIRO,NIHEI MASAHIKO
申请号：
JP20030086934
公开号：
JP2004290826(A)
申请日:
2003.03.27
申请国别(地区):
日本
年份:
2004
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide a night soil treatment system which efficiently cleans night soil at a low cost to water having a quality capable of being discharged, and reduces surplus sludge as much as possible. SOLUTION: This system is a system for treating high concentration organic liquid containing nitrogen, and has a high-temperature aerobic activated sludge treatment means that performs activated sludge treatment under a high-temperature aerobic condition to reduce the contents of organic substances, a precipitate separation means that separates precipitate by feeding a coagulant, an anaerobic/aerobic treatment means that denitrifies supernatant liquid after the precipitate separation by circulating two stage anaerobic/aerobic treatment, and a contact aeration means that removes residual organic substances in the denitrified liquid by contact aeration. COPYRIGHT: (C)2005,JPO&NCIPI
