Distribution Zones Implementation and Pressure ... - Iwa-waterloss.org

Diego LUCENTE
Suez Environment
Water Losses 2012 - Manila
Distribution Zones Implementation and
Pressure Management
An Advanced Distribution Solution for the
City of Jeddah

Agenda
Introduction & Context of Jeddah – Saudi Arabia
Suez Environment Offers for the NRW Reduction & Network
Management Improvement
Advanced Network Distribution Solution for Jeddah
Description of the project & Results
Conclusions
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Introduction
National Water Company awarded in 2008 a
Management Contract to a JV formed by
Acwa Power & Suez Environment
establishing the Jeddah City Business Unit to
provide water and waste water services for
the 3,5 M of inhabitants of Jeddah.
JCBU operates a network of 5,500 km of
network for water and 1,400 km for waste
water.
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Context of Jeddah
Operational & Infrastructure
• Water supply of 650 000 m3/day (65 %
through the network and 35 % by water
tankers)
• 5.500 km of network (80 % in plastic
pipes), only 5% with an average pressure
of 0.5 Bars
• Lack of sectorization and operational data
like flow measurement, pressure,
hydraulic behavior,
Internal Processes & Communication
• Absences of reliable Call Center and
Operation Center.
• No communication between Operational
and Customer Services Departments.
• No process, resources or systems to
follow up leak detection and repairs
activities.
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Context of Jeddah
• Supply frequency : 23 days
• Poor quality of service
•35% water supply by water tanks
•Growing population & rapid economic development
•Lack of natural resources and high water production cost = desalination
• Insufficient and poorly-maintained infrastructure (~ 40% water losses,
2/3 population not connected to sewers)
• Weak organization and public discontentment
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Suez Environment Solution
NRW
Diagnosis,
Forecast &
Action Plan
Advanced
Network
Distribution
Effective &
Real Time
Leakage
Detection
and Repairs
Advanced
Asset
Management
Advanced
Real Losses
Reduction
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Advanced Network Distribution
Solution
Advanced
Network
Distribution
Solution
Study of the hydraulic system, network conditions
& hydraulic model to define a Distribution Zones
Project
Distribution Zones Project implementation
Definition and set up of a measurement network
(flow & pressure) connected to the SCADA
Advanced Pressure Management Systems
Implementation
SCADA system and related software to monitor the
network operation (flow & pressure)
NRW automatic calculation once an AMR project is
implemented
O&M of the implemented solution
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Advanced Network Distribution
Solution for Jeddah
Creation and Implementation of 51 Distribution Zones
• To manage the evolution from rationing to continuous supply
• To operate the network through an advanced system with
pressure control and flow measurement linked to the SCADA
• Water balance assessment and NRW actions by priorities
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OCC Implementation & SCADA
Implementation of the Operation
Control Center (OCC)
• using SCADA and LTDB
• 240 pressure transmission points
• 75 flow measurement points
Development and implementation
of an innovative tool for rationing
improvement (awarded with an SE
innovation trophies)
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Distribution Zones
Implementation
• 8 DZ
implemented by
the end of 2011
• 28 DZ
implemented by
the end of 2012
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Distribution Zone Results
HH Example
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Flow (m3/hr)
Pressure (m)
1200
Flow & Pressure Mointoring of DZ-HH
Flow of H10P32 HH-PRV-Down stream HH-HP HH-LP
Before PRV After PRV
60
1000
50
800
40
600
30
400
Average flow is 18000 m3/D
Average flow is 16000
m3/D
Estimated WD is 14,688 m3/D
20
200
10
14 Leaks
4 Leaks
0
0
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Distribution Zone Results
Pressure Management
• The average flow reduction by DZ is estimated in 2000
m3/d after PRV implementation, around 11 % of the water
demand
• 2 systems are being tested going to be tested to optimize
the pressure following the consumption 24/24 to increase
water savings and reduce leakage (i2O system & Sofrel
system)
i2O System
Sofrel System
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Pressure Management Pilot
1 Controller
2 APV
3 PRV

Distribution Zone HH Results
•Entry Point PRV 300m CLA-VAL
•Number of HC : 3204
•Length of network 80 km
Further Pressure Reduction by i2O: 14 %
Additional flow saved 601 m3/d

Distribution Zone HE Results
•Entry Point PRV 300m CLA-VAL
•Number of HC : 922
•Length of network 23 km
Further Pressure Reduction by i2O: 20 %
Additional flow saved 2600 m3/d
Large P1
& P2
Delta;
headloss
P3
=5M

Conclusions
Global offer adapted to changing environments and through
different type of contract
Segmentation by Business Solutions, more versatility
Advanced Network Distribution Solution implemented in Jeddah,
Quickly identification of the problems and tailored solution
decided and implemented
OCC & SCADA with the measurement network gives enough
elements to start the DZ project
Implementation of DZ on going, 8 finalized by the end of 2011
& 28 by 2012
Quickly improvement on the Operation of the rationing after
the identification of the DZ
Pressure reduction allow to save around 10 to 15% of the
daily water supply (1Mm3/day > 100 000 m3/day available
fro other customers)
Pressure management shows further reduction of 14 to 20 %
on the daily water supply to the zones.
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Conclusions
September 2008
620,000 m 3 /day
ASF = 22,9 d
January 2012
1050000 m 3 /day
ASF = 7,45 d
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Thank you for
your attention !!
More questions,
diego.lucente@suez-env.com
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