| Title |
A Sludge Collector Selection Model by Life Cycle Cost Analysis |
| Authors |
Lee, Seung-Hoon ; Woo, Yu-mi ; Lee, Sung-Rak ; Hong, Tae-Hoon ; Koo, Kyo-Jin ; Hyun, Chang-Taek |
| Keywords |
Life Cycle Cost ; sludge collector ; economic evaluation ; technical·social factor evaluation |
| Abstract |
This study focused on developing Life Cycle Cost(LCC) analysis model for selecting sludge collectors in wastewatertreatment system and applying the model to a case study. Cost items are examined through literature review and historical dataof a facility. Analysis period, discount rate, energy cost escalation ratio are assumed to reasonable level. Monetary evaluation isperformed using historical data and estimations from vendors. Sensitive analysis is executed using Monte Carlo Simulation forassumed factors. Interviews with operators, vendors, constructors, managers are conducted to define factors which indicatesease of maintenance, ease of delivery, technical performance, efficiency, environmental friendship. Factors are representingtechnical and social factors. Results from LCC analysis and qualitative analysis are evaluate together with Weighted MatrixEvaluation Methods for optimum alternative of sludge collectors. |