Water and Irrigation Management

Water and Irrigation Management

Hydraulic evaluation of water distribution network of Salehabad city (Ilam province) in order to detect network leakage and reduce water loss

Document Type : Research Paper

Authors
Hamed Abdollahi 1
Jafar Mamizadeh 2
Reza Rezaei 3
1 M.Sc. Student, Department of Water Engineering, Faculty of Agriculture, Ilam University, Ilam, Iran.
2 Assistant Professor, Department of Water Engineering, Faculty of Agriculture, Ilam University, Ilam, Iran.
3 Deputy of Exploitation and Development of Water, Ilam Water and Sewerage company, Ilam, Iran.
10.22059/jwim.2021.325127.879
Abstract
Water resources management is one of the most important issues that are considered by experts in this field due to the reduction of rainfall and the reduction of groundwater levels. In this study, to reduce pipe fractures and water loss in Salehabad city (Comparison of water production and customer consumption data showed that there is more than 60 percent water loss in this network) field studies, pressure gauges, leak detection, and hydraulic analysis were performed by combining AutoCAD, WaterGEMS and GIS software. Points of the water distribution network that had more than 50 mH2o pressure were identified and then by field studies and using the method of closing the gate valves as a step by step, 6 points were identified as high-risk points of leakage. Therefore, with the check of the areas by the leak detector, 3 cases of pipe fractures were found and the remeasurement showed that the repair of these pipe fractures had reduced water loss by 20 percent. Depending on the urban texture and topography of the area, it was suggested to reduce the network pressure to 16 to 30 mH2o by installing a pressure relief valve in critical points of the network.
Keywords
Field data
Hydraulic analysis
Leakage
Water distribution network
Watergems
Water loss
Subjects
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Water and Irrigation Management
Volume 11, Issue 2
Summer 2021
Pages 301-314