10.4122/1.1000001038
Horie, N.
N.
Horie
Kabata, M.
M.
Kabata
Sano, H.
H.
Sano
Research and evaluation of CSO treatment technologies "SPIRIT21"
DTU Library, Technical University of Denmark (DTU)
2005
Conference full text
CSO treatment;
field test
partnership
SPIRIT21
Japan Institute Of Wastewater Engineering Technology (JIWET), First Research Department
2005
en
10.4122/1.1000001037
application/pdf
Abstract The early sewer systems were built in Japan as combined sewer system (CSS), which played an important role in urban development. In recent years, pollution of receiving waters by combined sewer overflows (CSOs) conveying large oil balls was widely reported and the Ministry of Land, Infrastructure and Transport (MLIT) addressed this issue by establishing \342\200\234CSS Advisory Committee\342\200\235 with a mandate to report on CSS improvement in Japan. This study was followed by publications of Guidelines of CSO control by the Japan Sewage Works Association, and amendment of Enforcement Ordinance of Sewage Law including CSO control. To develop appropriate technologies, MLIT initiated a project called \342\200\234Sewage Project, Integrated and Revolutionary Technology for the 21st Century (SPIRIT 21)\342\200\235. The project is operated under close cooperation among private sector, academic institutes and government. The project conducts research in the following areas of CSO treatment and instrumentation: (a) debris removal (screening), (b) high rate filtration, (c) coagulation and separation, and (d) disinfection, and (e) measurement and control instrumentation. 24 technologies were proposed in all by the private industry and proceeded to evaluation by field test in 13 cities. All technologies were tested successfully and are proposed for use in Japanese municipalities addressing CSO problems.