PROPOSAL OF ANALYTICAL FRAME AND A BASIC STUDY FOR EVALUATION OF EFFECT ON MAINTENANCE COSTS REDUCTION IN VARIOUS TYPES OF SEWAGE TREATMENT PLANTS BY INTRODUCING INFORMATION AND COMMUNICATION TECHNOLOGY WITH DIFFERENT SYSTEM DEPLOYMENT

Abstract

 In this study, effects on maintenance costs reduction were analyzed invarious types of sewage treatment plants all over Japan by introducing information and communication technology (ICT) with different computing environment. As a result of the analysis, it was revealed that maintenance cost reduction was observed only for about 6% of 2,144 sewage treatment plants all over Japan, assuming that ICT are impletemented individually. In particular, there is no treatment plant with maintenance cost reduction effect for 14 prefectures which have a lot of medium or small sized treatment plants. On the other hand, it was also revealed that maintenance cost reduction effect by ICT depends on system deployment such as on-premise and cloud computing, assuming that ICT is implemented over a wide area with local governments’ collaboration based on prefecture’s initiative.