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Cost Optimization of Integrated Wastewater Drainage and Treatment Systems
Author(s) -
Rep Karmen Ribicˇ,
Kompare Boris,
Rosˇ Milenko,
Kravanja Stojan
Publication year - 2008
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143007x221472
Subject(s) - drainage , wastewater , sewage treatment , combined sewer , activated sludge , nonlinear programming , environmental science , environmental engineering , drainage basin , drainage system (geomorphology) , operating cost , operational costs , waste management , engineering , stormwater , operations research , nonlinear system , ecology , physics , cartography , quantum mechanics , surface runoff , biology , geography
This paper presents the cost optimization of an urban drainage and wastewater treatment system. The mixed sewer urban drainage (including combined sewer overflows and retention basins), the activated sludge wastewater treatment plant (WWTP), and the permissible loading of the receiving water were optimized simultaneously by the nonlinear programming approach. For this purpose, the integrated optimization model OPTIMALWWT was developed. The economic objective function of the defined investment and operational costs is subjected to rigorous design and ecological constraints. A practical example of the cost optimization of an existing urban drainage and WWTP, located in Slovenia, is presented to demonstrate the efficiency of the proposed method. For each of the two different design approaches, three different optimization cases were carried out for three different technological alternatives. As a result, the optimal technological process was finally selected for the reconstruction of the system, as a result of its suitable costs and operational safety.