Leakage optimization of water distribution networks by pressure control

Download
2018
Köker Gökgöl, Ezgi
Excess water losses from drinking water distribution network is a serious problem in many countries all over the world including Turkey where total water losses is around 40% of the distributed water. Total water losses are divided into two parts namely (i) apparent or commercial water loss and (ii) real or physical water loss. Apparent water loss is from sources such as illegal water usage (water theft), inaccuracy in customer water meters, and meter reading handling errors. Real water loss is from sources such as leakage in water mains, leakage from connection to buildings, overflow from distribution reservoirs and from the water lost by pipe bursts. Water losses cause a lot of energy and economic losses and also results in water quality and sustainability problems. Thus, it is important to determine, reduce and manage water loss. It is proven by many studies that excess unnecessary water pressures lead to excess water loss. In this study, it is aimed to optimize pressure in a water distribution system in order to minimize the leakage. In addition, as a new approach, Chance Constraint is applied to cover uncertainties in the system which are resulting from various factors affecting leakage. LSGRG2 code is used for solving non-linear optimization problem and EPANET is used for hydraulic analysis.

Suggestions

Optimization of Leakage in Water Distribution Networks Using Pressure Reducing Valve
Köker, Ezgi; Altan Sakarya, Ayşe Burcu (null; 2016-07-06)
Excessive water loss from drinking water distribution network is a serious problem in many countries all over the world including Turkey where total water losses is around 45% of the distributed water. Water loss not only cause a critical amount of energy and economic losses but also results in water quality and sustainability problems. Thus it is crucial to determine, reduce and manage water loss. The most effective means of reducing water loss in distribution systems is proven by former studies to be the ...
Rehabilitation of water supply systems
Toğrul, Nevzat; Merzi, Nuri; Department of Civil Engineering (2015)
Management of water supply systems by an economic and efficient way is a significant issue for water authorities. Selection and operation of water supply elements appropriately to satisfy water need affects the energy consumption of the system. This study aims to constitute a long term rehabilitation plan for water supply elements (only storage tanks, pumps and transmission line pipes are in the scope of the study). A case study has been performed on N8.3 pressure zone of Ankara water distribution network. ...
Chance constrained optimization of booster disinfection in water distribution networks
Köker, Ezgi; Altan Sakarya, Ayşe Burcu; Department of Civil Engineering (2011)
Quality of municipal water is sustained by addition of disinfectant, generally chlorine, to the water distribution network. Because of health problems, chlorine concentration in the network is limited between maximum and minimum limits. Cancerogenic disinfectant by-products start to occur at high concentrations so it is desired to have minimum amount of chlorine without violating the limit. In addition to the health issues, minimum injection amount is favorable concerning cost. Hence, an optimization model ...
Leakage control by optimal valve operation
Özkan, Tülay; Merzi, Nuri; Department of Civil Engineering (2008)
The main function of a water distribution system is to supply water in sufficient quantity at appropriate pressure with an acceptable quality and as economically as possible. Water leakage in distribution networks may account from 5% to 50% and even larger of the total water delivered. The amount of leakage in a network is directly related to system service pressure. Therefore, reductions in high service pressures will result in considerable reductions in leakage. A methodology for leakage reduction has bee...
Reliability based water distribution network design
Akkaş, İzzet Saygın; Merzi, Nuri; Department of Civil Engineering (2006)
The need of water and the limited sources, force the researchers to find the most economical and feasible solution in the design of a water distribution network. In this study, reliability and optimization of a water distribution network are taken into account together in the design stage of the network. The relationship between reliability of a water distribution network and its cost is examined during the design of a water distribution network. A methodology for deciding the reliability level of the selec...
Citation Formats
E. Köker Gökgöl, “Leakage optimization of water distribution networks by pressure control,” Ph.D. - Doctoral Program, Middle East Technical University, 2018.