Abstract
The preservation of the water quality in the distribution network requires maintaining permanently minimum residual chlorine at any point of the network. This is possible only if we plan chlore’s injections in various points of the network for intermediate rechlorination, or when increasing the initial level of chlorine in the tank outlet. In the latter case, there is a risk of disruption of the taste and smell of water for consumers near the tanks. Therefore, to avoid an excessive increase in the chlorine concentration in the tanks and to avoid affecting the taste of the distributed water, intermediate rechlorination stations should be implemented. These stations will proceed with the chlorine regulation. Given the high cost of the implementation of such stations, the optimization of the number and the choice of location of these stations are needed. This paper is focused on the implementation of an algorithm for such optimization. We used dynamic programming in this algorithm. Performance tests of our decision support system were done on real sites of the Wilaya Rabat-Sale (network of Morocco's capital).
Highlights
We present the method retained for the optimization of the locations of intermediate rechlorination stations, with regard to the approach of the dynamic programming
A problem can be solved by the dynamic programming if it is decomposable into n phases, any phase i being defined by two vectors and two functions (12) (13)
The pipes whose function was reduced to distribution in a street were excluded from the analysis
Summary
Its contact with the ground, the water pollutes and its charges by suspended matter, clay particles, vegetation waste, living organisms (plankton, bacteria, viruses), salts various (nitrates, chlorides, sulfates, sodium carbonate, etc...), gas (1) The presence of these impurities requires processing before use, to make it potable. The urban distribution is the potential seat of numerous causes of degradation of the quality of water that lead to sanitary risks aswell as to organoleptic degradations directly perceived by consumers (2) (3). The evaluation of this quality requires a follow-up of control and prevention, through sampling in the network. In order to achieve this, it is necessary to plan the implantation of intermediate chlorination stations
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