STO WATER LOSSES Reduce NRW to less than 10 % through integrated NRW management By Klavs Høgh & Kristian Rokkjær
NRW in South Africa at 40 % A burning platform RSA is divided into 9 Water Management Areas, demand divided into Agriculture, Domestic and Industrial 61/27/3 South Africa Global NRW 5-96 % NRW > 10 % is considered high 2 roperty of NIRAS
Measures to Reduce NRW...Starting with leakage reductions Baseline Active Leakage Control Leakage ressure Management Speed & Quality of Repairs ipeline Management & Rehabilitation Unavoidable Leakage Level Time 3 roperty of NIRAS
The LEAKman Concept The main Technology partners Grundfos umps ressure Optimization AVK Valves ressure Optimization Schneider Electric SCADA Hydraulic Modelling Kamstrup Customer metering Smart Meters Bulk Meters Leif Koch Leak Detection and Leak Location Noise Loggers 4 roperty of NIRAS
Systems Operations Customer Metering Intelligent umps & Valves Online Monitoring SCADA & Online Modelling HOMIS GIS, CIS AMS, Finance Noise Loggers 5 roperty of NIRAS
Integration Standard interfaces GIS Smart meter ASSET Hardware Software Water sample HOMIS Economy Staff Hydraulic model Noise logger Management Valve ump SCADA 6 roperty of NIRAS
Creating a SMART Water Network The SWAN 5-layer principle Data Fusion & Analysis Data Management & Display Data Collection & Communication Sensing & Control hysical Assets 100 SWAN SCORE 0 7 roperty of NIRAS
Synergy Effects New technologies & improved interfaces Noise logger information available in hydraulic models 8 roperty of NIRAS
Results from UAE Al Ain City One DMA One year AL 2% RL 19% UAC 19% BAC 60% AL 2% UAC 12% RL 8% BAC 79% Billed Authorized Consumption: From 60 % to 79 % Reason: DMA joint survey Real Losses: From 19 % to 8 % Reason: Repair of 50+ leaks found Increase in Billed Consumption: 190,000 m³/year Decrease in Real Losses: 235,000 m³/year Total improvement of NRW: 250,000 m³/year 9 roperty of NIRAS
Results from UAE Al Ain Obtained after one year Documented Annual Savings for 19 DMAS: Water ~ 1.6 mill. m³ Cost ~ 3.2 mill. EUR ROI ~ 1½ years otential Annual Savings for 105 DMAS: Water ~ 16 mill. m³ Cost ~ 32 mill. EUR 10 roperty of NIRAS
Leakage Management The Four illars of Leakage Management in Water Distribution Networks RESSURE MANAGEMENT ressure optimization reduces burst frequency and losses from existing leakages Reduces run times of reported leakages thus minimizing losses SEED & QUALITY OF REAIRS Unavoidable Annual Real Losses Economic Level of Leakage Current Annual Real Losses ACTIVE LEAKAGE CONTROL Reduces lifetime of unreported leakages A well maintained network directly reduces the burst frequency and minimizes background leakage IELINE MANAGEMENT & REHABILITATION 11 roperty of NIRAS
Active Leakage Control rioritizing the weak components IWA Best ractice SIV 197,797 m³ 100% AC 134,094 m³ 68% BAC 124,836 m³ UAC 9,258 m³ AL 2,682 m³ WL 63,703 m³ 32% RL 61,021 m³ 31% BMC 124,836 m³ BUC 0 m³ UMC 5,207 m³ UUC 4,050 m³ UC 0 m³ CMI 2,682 m³ LTDM 3,482 m³ LOST 0 m³ LSCM 57, 540 m³ RW 124,836 m³ 63% NRW 72,961 m³ 37% 12 roperty of NIRAS
NRW Control DMA Surveys Team Work ressure tests Validate data HYSICAL LOSSES Locate & record valves Test & operate valves Update mapping rove testing of mains ressure tests Valve repairs Flow meter installations Monitor flows Step testing Leak detection Leakage repairs ipe replacements Step testing Record no. of customers Valve repairs Effectiveness NON-HYSICAL LOSSES Record no. of customers Record no. of connections Record no. of metered connections Record defective meters Record non-accessible meters Record no. of non-domestic customers Clarify billing vs. customer accuracy Investigate unauthorized connections Sample, testing and calibration of meters Meter defect change program 13 roperty of NIRAS
Monitoring on KI s Integration of organization and topology 14 roperty of NIRAS
Acoustic Leak Detection...and Leak Location Ground microphones Deployed noise loggers Correlating noise loggers Leak Detection Leak Location 15 roperty of NIRAS
Hydraulic Modelling Online and offline For improved operations and quality of service ressure optimization Water Quality optimization High ressure Low chlorine 16 roperty of NIRAS
Remote Metering Automatic Meter Reading - AMR Ultrasound No moving parts recise measurements year after year 16 years battery life 200 m 5 km range 17 roperty of NIRAS
ressure Management Operations Intelligent pumps and valves ressure optimization roduction optimization 18 roperty of NIRAS
Human Resources are Essential It All about the people... 19 roperty of NIRAS
Integrated CSR Technical We bring not only the technology But also vital knowledge & education Innovation 20 roperty of NIRAS
Capacity Building on All Levels rofessionals in Water Management and Leakage Control It s all about the people! Craftsmen Technicians Engineers Managers Collaboration with technical schools and universities to create a new generation of water rofessionals 21 roperty of NIRAS
THANK YOU 22 roperty of NIRAS