digital operation and procedures for water loss reduction
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Digital operation and Digital operation and Digital operation and Digital operation and procedures for water loss procedures for water loss procedures for water loss procedures for water loss reductionreductionreductionreduction
WebinarWebinarWebinarWebinar, February 11, February 11, February 11, February 11thththth 2021202120212021Marmara Union of Municipalities, Royal Danish Consulate General and Turkish Union of
Municipalities
Sally Nyberg Kornholt. Sally Nyberg Kornholt. Sally Nyberg Kornholt. Sally Nyberg Kornholt. NRW Operations Engineer, Aarhus Vand
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Company structure in Aarhus Vand
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COMPANY PROFILE
Operations
Service
Development
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Non-Revenue Water reduction
through a holistic approach
Several aspects need to be addressed to reach
low NRW levels and ensure continuous
success
My agenda today:
- Data
- Operation & maintenance
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Operation &
maintenance
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Information data Information data Information data Information data
• Water consumption metered at all consumers
• SCADA data from waterworks and District
Meter Areas (DMA’s)
• Pipeline registration
• Data platform – visualized and dataflow
• Etc.
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NRW data in the water cycle
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INFORMATION DATA
Water consumption
SCADA data from waterworks and storage tanks
Pipeline and distribution wells
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SCADA data from DMA's
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District Metering Areas (DMA)
INFORMATION DATA
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District Metering Areas (DMAs) in Aarhus
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INFORMATION DATA
Data collected
• Flow
• Pressure
• Temperature
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Pipeline registration
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Pipeline registration
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• All the important informations are registered
• Data is available to all in the company
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Data platform – visualized and
dataflow
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Data platform – visualization and operational dataflows
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INFORMATION DATA
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Operation & maintenanceOperation & maintenanceOperation & maintenanceOperation & maintenance
• Organization and response time in leakage
incidents
• Structured water loss monitoring
• Leakage detection
• Pressure management
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Operation &
Maintenance
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Organization and response time in leakage incidents
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Repetition: Company structure Aarhus Vand
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OPERATION AND MAINTENANCE
Operations
Service
Development
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Workflow Aarhus Vand– leakage (and burst)
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OPERATION AND MAINTENANCE
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Structured leakage monitoring
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Use of DMAs
• Look for change in night-
time water consumption
• Calculate an
expected nighttime con-
sumption to compare (at
2 – 4 AM)
OPERATION AND MAINTENANCE
Normal nighttime inlet
New leak
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Leakage monitering software
• Quick overview of all zones an sections
• Prioritizing areas for leakage detection
• Daily monitoring
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OPERATION AND MAINTENANCE
Flow
Estimated consumption
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Leakage detection
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Leakage detection – methods in Aarhus
Vand• Trailer with a tank (Aarhus Vand method)
• Microphones
• Correlator
• Gas
OPERATION AND MAINTENANCE
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Pressure management
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Pressure management and leakage
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OPERATION AND MAINTENANCE
Pressure and volume of water loss are related.
Pressure variation causes poor water quality and more
bursts.
Aarhus Vand actions:
• Minimum pressure is 2,0 bar (1,7 bar)
• Reduce pressure variation
• Calculate and/or measure pressure in
the water distribution network (AQUIS/EPANET) –
advanced pressure management
• Build a model and simulate age of pipes
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ThankThankThankThank youyouyouyou!!!!