Optimization of the operating cost of sewage conveyance
Keywords:
nonlinear optimization, pressurized pumping station, sewage pipe network, orthogonal testAbstract
Accelerated urbanization places extraordinary demands on sewer networks; thus optimization research to improve the design of these systems has practical significance. In this paper, a subsystem nonlinear programming model is developed to optimize pumping station layout and sewage pipe network design. The subsystem model is expanded into a large-scale complex nonlinear programming system model to find the minimum total annual cost of the pumping station and network of all pipe segments. Large system test selection and subsystem dynamic programming methods are metioned in this paper. A comparative analysis is conducted using the sewage network in Taizhou city, China as an example. The proposed method demonstrated that significant cost savings could have been realized if the studied system had been optimized using the techniques described in this paper. Thus, the method has practical value for optimizing urban sewage projects and provides a reference for theoretical research about optimization of urban drainage pumping station layouts.
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