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http://dx.doi.org/10.3741/JKWRA.2012.45.1.101

Development of a System Dynamics Model for the Efficient Operation and Maintenance of Sewerage Systems  

Park, Su-Wan (Dept. of Civil and Environmental Eng., Pusan National Univ.)
Lee, Tae-Geun (Dept. of Civil and Environmental Eng., Pusan National Univ.)
Kim, Bong-Jae (Ulsan Regional Office, Korea Water Resources Corporation)
Kim, Tae-Young (Dept. of Water and Sewerage, Jeongsu Enc.)
Publication Information
Journal of Korea Water Resources Association / v.45, no.1, 2012 , pp. 101-111 More about this Journal
Abstract
In this paper, the feedback loop mechanisms among the operational indices and exogenous variables of a sewerage system that are inherent in the operation and maintenance of a sewerage system were identified using the System Dynamics (SD) modeling methodology. The identified feedback loops were used to develop a SD computer simulation model that can be used to predict future operational conditions of a sewerage system and identified the efficient ways of operation. The data of Busan metropolitan city sewerage system was applied to verify the developed SD model and predict future operational conditions of the system. As a result, it was predicted that sewage treatment efficiency, volume of sewage treatment and cost recovery rate will be gradually increased, whereas service rate which was already very close to the target will remain almost the same as the current value. Furthermore, sensitivity analysis concerning some operational indices was performed in order to discover the policy leverage. As a result, it was found that the exogenous variables related to the pipe maintenance had a great effect on facility using rate, volume of sewage treatment as well as sewage treatment efficiency.
Keywords
feedback loop; operational indices; policy leverage; sewerage system; system dynamics;
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Times Cited By KSCI : 1  (Citation Analysis)
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