1. Water Distribution Networks Under Intermittent Pumping: Development of a hydraulic model and Assessment of water losses
Prepared by
Mohammad Jihad Abdo
Supervised by
Dr. Mohammad N. Almasri

2. Introduction
Losses Problem
Intermittent pumping

3. Objectives
Assessment of water losses
Hydraulic analysis using EPANET

4. Importance of study
Losses from water distribution networks are high in many areas in Nablus and thus it is an on-going problem
Water supply in Nablus is intermittent and thus it is important to show the applicability of EPANET in this case

5. Study area
Nablus
Iskan rujeeb

6. Ein-Difna

7. Methodology

8. assessment
Methodology
Reasons
houses

9. results Hydraulic model in EPANET with reality Losses
Intermittent pumping by using tanks
EPANET a good tool
G I S data

10. Development of hydraulic model
Demand
Pressure

11. Elevations ( )m.
G I S
Pipes
Low area
470m
High area
510 m

12. Hydraulic Model assumptions
Pattern behavior
The model

13. Tanks used to represent the demand.
All areas in study area have the same flow pattern behavior but with shifting.
No back flow from the tanks to the network.

14. Cumulative flow distribution
Output of EPANET
Flow rate
Flow-time
Cumulative flow distribution

15. Velocity
source pipe
Net work pipe
House connection

16. Cumulative distribution of pressure
Pressure (2 bars)
Pressure-time
Cumulative distribution of pressure

17. Conclusions EPANET and GIS are a good tools for hydraulic analysis.
Losses is equal 28% and for capita is 4 liters in average.
Intermittent pumping is a main reason for losses

18. Recommendations Water distribution network and meters must be checked.
Pressure must be decreased
More detailed field work should be carried out to assess water losses

19. Thanks for your attention
Any Question?