Small and Medium–sized Decentralized System for WastewaterTreatment and Reuse

Abstract

Global shortage of water resources is one of the biggest problems in 21stcentury. In many developing countries,sewerage system has not been installed, and pollution of water environment is also big problem. It is very difficult toinstall wide-area sewerage in such countries. Therefore small and medium-sized decentralized system for waste-water treatment and reuse is necessary. Integrated Intelligent Satellite System (IISS)has been proposed, and keytechnologies of this system, such as MBR operation with high MLSS, prevention of membrane fouling, predictionmodel of TMP change with time, utilization of ozone microbubble, and so on, are under development. This reviewgives recent results of these research and developments.