@techreport{oai:soar-ir.repo.nii.ac.jp:00016860,
 author = {中本,  信忠 and 坂井,  正},
 month = {Mar},
 note = {This is an explanation of as Jow sand filter (SSF). The reason of change from SSF to ar apid sand　filter (RSF) in Ja pan is discussed. The occurence of odor trouble in tap water is described. The difference of　both treatments is described precisely. It is emphasized that the efficiency of land utilization of SSF is same　as that of RSF. The mechanism of production process of the high water quality of water by SSF is explained　on the standpoint of biological activity of algal and heterotrophic communities. The reason of occurence of　filamentous algae in SSF is explained and the role of filamentous algae is evaluated. The ideal management　of SSF is proposed on the standpoint of algal activity. The weak points in biological treatment are discussed.　The conservation of water sources is emphasized for the safe and high quality tap water., Article, 環境科学年報16:17-36(1994)},
 title = {生物浄化法の緩速ろ過処理の見直し},
 year = {1994}
}