ESTABLISHMENT OF BASIC-MODEL ON FACILITY MAINTENANCE COST AT SEWAGE TREATMENT PLANT AND EVALUATION OF ICT FACILITY DETERIORATION DIAGNOSIS TECHNOLOGIES

Abstract

 By conducting a questionnaire to 60 sewage treatment plants in JAPAN, we investigated the current state of maintenance costs of the six equipment of sewage pump, sludge pump, deodorizing fan, blower, centrifugal dehydrator, centrifugal concentrator, which are the main equipment at sewage treatment plants. Based on the results of this survey, a basic model of the maintenance cost of sewage treatment plants at three treatment plant sizes of 10,000 m³/d, 50,000 m³/d, and 100,000 m³/d was constructed. In addition, using this basic model, two methods for deterioration diagnostic of sewage facilities using ICT adopted for B-DASH project in 2015 was evaluated. As a result, it was suggested that the methods could introduce 2.4 - 20 million yen/year.