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Optimal Design of Sewer Line with Tail End Pumping Station
The optimal design of sewer line have, so far, been restricted to complete gravity systems whereas in real life situations, intermediate or tail end pumping station becomes imperative, both from engineering and cost considerations. This paper deals with the development of an approach for the optimization of sewer line with tail end pumping station. The work is divided into two parts. At the first part, gravity sewers are designed and at the later part, the sewer line is designed along with the tail end pumping station. The dynamic programming (DP) technique is used as a tool for optimization throughout the sewer line design, along with Manning equation. The cost of pump considering the stand by fraction for pump and the energy cost are considered as cost function for pumping of waste water in addition to the cost function for sewer line design. The algorithm was developed for optimization of cost function of sewer line with tail end pumping station. The effectiveness of the algorithm was tested through an illustrated design example.
Keywords
Dynamic Programming, Sewage Pumping, Optimization, Sewer Design.
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