IAWD DWP Project Reduction of NRW - city of Kumanovo, Macedonia

Transcription

1 Balkans Joint Conference Prishtina IAWD DWP Project Reduction of NRW - city of Kumanovo, Macedonia Bojan Ristovski Aquasave ltd Skopje, Macedonia Managing Director

2 INFORMATION FOR THE PROJECT Project title: Total cost: Amount covered from the Danube Water Program (DWP) REDUCTION OF NON REVENUE WATER CITY OF KUMANOVO 45, EUR 37, EUR Amount covered by P.U. VODOVOD Kumanovo 8, EUR Project signed on: Project started on: Project duration: 14 months Consultant: Bojan Ristovski, Skopje, Macedonia Subcontractor: Aquasave ltd Skopje

3 PROJECT ACTIVITIES Preparation of Water Balance Collecting IBNET database and calculating performance indicators Division the all network into DMA s Flow and pressure measurements campaign Active Leakage Control applied on selected DMA Develop procedures for operation and maintenance and billing and collection Provide training to managerial staff (theoretical), engineering and technical stuff (theoretical and practical) and employees from financial and collection department Distributed a leaflet to raise consumer awareness about the importance of water and its savings Development of strategy for water loss reduction

4 Company data Established in 1956 Number of employees: 250 Population served: Annual water input: around 8.8 millions m 3 Number of consumers: households, 2600 industrial Price of water; Industry/Household: 0,924 / 0, hours/day, 365 days/year continuous supply Water sources: Artificial Lake Lipkovo Wells in v. Proevce Drainage System v. Bedinje Length of Mains: 161 km Diameter of Mains: ø20mm ø457 mm

5 Produced; Sold; Non Revenue (m3) NRW (%) REASONS FOR CHOOSING PROJECT TOPIC Approximately 60% Non Revenue Water in 2013 In absolute value - around 5.3 million m 3 water High level of NRW - one of the main problems that affect efficiency and sustainability of the system and services Kumanovo-Volume (m 3 ) of Water produced, Sold, NRW; NRW (%) 12,000,000 10,000,000 8,000,000 6,000,000 4,000,000 2,000, Increased operating costs Water Produced (m3) Water Sold (m3) Non Revenue Water (m3) NRW (%)

6 Collection period (days) Collection rate (%) revenue, cost (milion mkd/year) cost coverage Pipe Breaks; Sewerage blockages (number/km/year) NRW (m 3 /km/day) NRW (%) PERFORMANCE INDICATORS-IBNET QUESTIONNAIRE Kumanovo - Pipe breaks, Sewerage blockages Benchmark Pipe breaks 0, Kumanovo-NRW (m 3/ km/day); NRW (%) Benchmark 20 m 3 /km/day; од 20% Pipe breaks Sewerage blockages NRW (m3/km/day) NRW (%) Kumanovo - Collection rate, Collection period Benchmark Collection period 90 days Collection rate 95% Collection period 2013 Collection rate Kumanovo-Revenue, Cost, Cost coverage Benchmark: at least 1, Revenue mkd/year Cost coverage 2013 Cost mkd/year

7 WATER BALANCE P.U. VODOVOD KUMANOVO (2013) Establishing a Water Balance, which process helps to understand the magnitude, sources and cost of NRW (by software WB-EasyCalc).- first step to Integrated system to reduced NRW

8 Water Losses Volume (m 3 ) and value (MKD) cost - Source: EasyCalc software

9 Indicators of success Source: EasyCalc software Level of service Average supply time [h/day] 24 Average pressure [m] 48,4 Volume of Real Losses CARL Current Annual Volume of Real Losses [m 3 /day] UARL Unavoidable Annual Real Losses [m 3 /day] Real Loss Performance Indicators Infrastructure Leakage Index (ILI) 8,1 Liters per Connection per Day (w.s.p) 403 m 3 /km mains per hour (w.s.p) 2,93 Commercial Loss Performance Indicators Commercial Losses expressed in % of Authorized Consumption 24% Liters per Connection per Day 85 Financial performance indicators Volume of Non - Revenue Water expressed in % System Input Volume 60% Value of Non - Revenue Water expressed in % od Annual Operating Cost 44% Liters per Connection per Day (w.s.p) 502

10 DIVISION OF THE NETWORK IN DMA s Three pressure zones (High, Middle, Low); HPZ (8 DMA s) MPZ (4 DMA s) LPZ (11 DMA s)

11 INFLOW IN THE CITY OF KUMANOVO Inflow in the City of Kumanovo (MK)

12 16:22:04 19:42:04 23:02:04 02:22:04 05:42:04 09:02:04 12:22:04 15:42:04 19:02:04 22:22:04 01:42:04 05:02:04 8:22:22 11:42:22 15:02:22 18:22:22 21:42:22 1:02:22 4:22:22 7:42:22 11:02:22 14:22:22 17:42:22 21:02:22 0:22:22 3:42:22 7:02:22 10:22:22 13:42:22 17:02:22 20:22:22 23:42:22 3:02:22 6:22:22 9:42:22 Flow (l/s) HIGH PRESSURE ZONE FLOW PROFILE AND STATISTIC HPZ Kumanovo PS Proervce High Pressure Zone inlet v. Cherkeze ( ) HPZ Total Total average input in High pressure zone in period of (24 hour) 5107,41 m 3 Input in the system HPZ 17(16:20)-22 (10:50) hours Time (l/sec) m 3 /h Minimum 04:00:12 36,03 129,72 Maximum 10:10:12 84,53 304,30 Average 57,98 208,73 Total input in the system HPZ (m 3 ) 23930,39 Approximate loss of water (%) 62,15 Total input in the system HPZ from 02:00-05:00 (m 3 ) ,15 (l/sec) Minimal flow HPZ from avg/h 02:00-05:00 (18.04) m 3/ h avg/h 36,03 129,72

13 17:40:45 18:40:45 19:40:45 20:40:45 21:40:45 22:40:45 23:40:45 0:40:45 1:40:45 2:40:45 3:40:45 4:40:45 5:40:45 6:40:45 7:40:45 8:40:45 9:40:45 10:40:45 11:40:45 12:40:45 13:40:45 14:40:45 15:40:45 16:40:45 17:40:45 18:40:45 19:40:45 20:40:45 21:40:45 22:40:45 23:40:45 0:40:45 1:40:45 2:40:45 3:40:45 4:40:45 5:40:45 6:40:45 7:40:45 8:40:45 9:40:45 10:40:45 Flow (l/s) MIDDLE PRESSURE ZONE FLOW PROFILE AND STATISTIC Middle pressure zone-input Total input in Middle Pressure Zone (24 hour) 5723,48 m 3 Input in the system MPZ 25 (17:40)-27 (11:20) hours Time (l/sec) m 3 /h Minimum 04:10:45 39,29 141,44 Maximum 19:50:45 90,21 324,74 Average 65,44 235,59 Total input in the system MPZ (m 3 ) 9849,13 Approximate loss of water (%) 60,04 Total input in the system MPZ from 02:00-05:00 (m 3 ) ,13 (l/sec) Minimal flow MPZ from avg/h 02:00-05:00 (26.06) m 3/ h avg/h 41,41 149,09

14 14:20:25 15:00:25 15:40:25 16:20:25 17:00:25 17:40:25 18:20:25 19:00:25 19:40:25 20:20:25 21:00:25 21:40:25 22:20:25 23:00:25 23:40:25 0:20:25 1:00:25 1:40:25 2:20:25 3:00:25 3:40:25 4:20:25 5:00:25 5:40:25 6:20:25 7:00:25 7:40:25 8:20:25 9:00:25 9:40:25 10:20:25 11:00:25 11:40:25 12:20:25 13:00:25 13:40:25 14:20:25 Flow (l/s) LOW PRESSURE ZONE FLOW PROFILE AND STATISTIC (flow profile LPZ) LPZ (l/s) Total input in Low Pressure Zone (24 hour) 10438,721 m 3 Input in the system LPZ 09 (14:20)-10 (14:20) hour Time (l/sec) m 3 /h Minimum 04:40:25 88,69 319,30 Maximum 19:40:25 136,48 491,33 Average 120,46 433,67 Total input in the system LPZ (м 3 ) 10438,72 Approximate loss of water (%) 73,63 Total input in the system LPZ from 02:00-05:00 (m 3 ) ,91 (l/sec) Minimal flow LPZ from avg/h 02:00-05:00 (10.07) m 3/ h avg/h 88,69 319,30

15 15:00:36 16:20:36 17:40:36 19:00:36 20:20:36 21:40:36 23:00:36 0:20:36 1:40:36 3:00:36 4:20:36 5:40:36 7:00:36 8:20:36 9:40:36 11:00:36 12:20:36 13:40:36 15:00:36 16:20:36 17:40:36 19:00:36 20:20:36 21:40:36 23:00:36 0:20:36 1:40:36 3:00:36 4:20:36 5:40:36 7:00:36 8:20:36 9:40:36 11:00:36 12:20:36 13:00:43 13:50:43 14:40:43 15:30:43 16:20:43 17:10:43 18:00:43 18:50:43 19:40:43 20:30:43 21:20:43 22:10:43 23:00:43 23:50:43 0:40:43 1:30:43 2:20:43 3:10:43 4:00:43 4:50:43 5:40:43 6:30:43 7:20:43 8:10:43 9:00:43 9:50:43 10:40:43 11:30:43 12:20:43 13:10:43 14:00:43 FLOW PROFILE WITH AND WITHOUT WATER LOSS Sredorek Flow (l/s) Opening of the valve previously closed Max. 07/05/ :20:43 11,49 l/s Min.. 07/05/ :20:43 7,01 l/s Avg. 9,86 l/s v. Dobroshane Flow [l/s] Max. 14/05/ :30:36 4,88 l/s Min. 15/05/ :40:36 0 l/s Avg. 2,76 l/s

16 15:10:00 16:40:00 18:10:00 19:40:00 21:10:00 22:40:00 0:10:00 1:40:00 3:10:00 4:40:00 6:10:00 7:40:00 9:10:00 10:40:00 12:10:00 13:40:00 15:10:00 16:40:00 18:10:00 19:40:00 21:10:00 22:40:00 0:10:00 1:40:00 3:10:00 4:40:00 6:10:00 7:40:00 9:10:00 10:40:00 15:50:12 17:20:12 18:50:12 20:20:12 21:50:12 23:20:12 0:50:12 2:20:12 3:50:12 5:20:12 6:50:12 8:20:12 9:50:12 11:20:12 12:50:12 14:20:12 15:50:12 17:20:12 18:50:12 20:20:12 21:50:12 23:20:12 0:50:12 2:20:12 3:50:12 5:20:12 6:50:12 8:20:12 9:50:12 11:20:12 12:50:12 14:20:12 THE IMPORTANCE OF PERMANENT FLOW AND PRESSURE MEASUREMENT Leak on pipe DN150 Flow (l/s), Str. T. Dumba, Kumanovo Проток [л/с] Leak section closed Pressure (bar) Str. Straso Pindzur, Kumanovo P (bar) 4,000 3,500 3,000 2,500 2,000 1,500 1, Leak section closed

17 ACTIVE LEAKAGE CONTROL APPLIED ON SELECTED DMA (DMA 308)- PROCEDURE-STEPS DMA design Repair, Analyse detection activities effectiveness On site measurement of pressure and flow Leak Location Analyse the data AZNP and MNF Defined the prioritized areas Acoustic sounding survey Step Test Visual inspection of water, sewerage system On site survey for illegal connections

18 DAILY INFLOW subdmas 308

19 ON-SITE SURVEY FOR ILLEGAL CONNECTION DMA Total number of water meters Number of controlled water meters Illegal connections Previously disconnected customers by PE Vodovod Kumanovo Leaks on water meter Faulty water meters

20 LEAK LOCALIZATION Sounding on all fittings, valves and hydrants with Contact Microphone (non- metallic pipes has to be sound on each available contact point or connection pipe) Prioritize of areas with high leakages by Step Test

21 0:00:14 0:07:14 0:14:14 0:21:14 0:28:14 0:35:14 0:42:14 0:49:14 0:56:14 1:03:14 1:10:14 1:17:14 1:24:14 1:31:14 1:38:14 1:45:14 1:52:14 1:59:14 2:06:14 2:13:14 2:20:14 2:27:14 2:34:14 2:41:14 2:48:14 2:55:14 3:02:14 3:09:14 3:16:14 3:23:14 3:30:14 3:37:14 3:44:14 3:51:14 3:58:14 4:05:14 4:12:14 4:19:14 4:26:14 4:33:14 4:40:14 4:47:14 4:54:14 STEP TEST 25 DMA 308 (one of the two inflows) (Str. Narodna Revolucija-Brakja Ribar ) 20 Z-1 15 Z-2 10 Z-3 Z-4 5 0

22 LEAK DETECTION (Correlator) (Ground Microphone)

23 PINPOINTED LEAKS Dimitar Vlahov Str. Nb. 23 Leakage located on a reducer from 5/4 to ¾ on galvanized connection pipe. Indication of leakage: continuous water flowing into the sewerage manhole, located m far from the leak point. Prior to leak location, the pipe was traced. Used equipment: contact microphone, ground microphone, correla tor, pipe tracer.

24 Done Bozinov Str. (Asbestos cement DN 200 mm)

25 21: 22: 23: 0:5 1:5 2:5 3:5 4:5 5:5 6:5 7:5 8:5 9:5 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: 21: 22: 23: 0:5 1:5 2:5 3:5 4:5 5:5 Flow (l/s) 11:3 12:4 13:5 15:0 16:1 17:2 18:3 19:4 20:5 22:0 23:1 0:20 1:30 2:40 3:50 5:00 6:10 7:20 8:30 9:40 10:5 12:0 13:1 14:2 15:3 16:4 17:5 19:0 20:1 21:2 22:3 23:4 0:50 2:00 3:10 Flow (l/s) COMPARING THE DATA BEFORE AND AFTER THE PROJECT ACTIVITIES-BY GRAPHS Flow profile of DMA 308, LPZ Input 1 Oktomvriska Revolucija Input 2 Narodna Revolucija Brakja Ribar DMA 308, LPZ Before Flow profile of DMA 308, LPZ Oktomvriska Revolucija After Narodna Revolucija Brakja Ribar DMA 308, LPZ

26 COMPARING THE DATA BEFORE AND AFTER THE PROJECT ACTIVITIES Before After Time (l/s) m 3 /h Minimum 04:20:04 22,62 81,42 Maximum 12:50:04 48,07 173,07 Average 38,47 138,51 Total daily input in DMA 308 (m 3 ) 3354,13 Time (l/s) m 3 /h Minimum 04:20:21 15,17 54,62 Maximum 11:20:21 28,94 104,17 Average 23,83 85,80 Total daily input in DMA 308 (m 3 ) 2132,19 Total input in DMA 308 from 02:00-05:00 (m 3 ) ,44 Total input in DMA 308 from 02:00-05:00 (m 3 ) ,11 Savings l/s m 3 /h m 3 (02:00-05:00) 7,45 26,82 81,33

27 LEGITIMATE NIGHT USE AND NDF CALCULATION ч

28 ACHIEVED SAVINGS avg. MNF (m 3 /h) Normal Night Use (m 3 /h) Night Leakage (m 3 /h) = Night Flows Night Demands NDF Daily Leakage (m 3 /d) = Night Leakage * NDF Yearly Leakage (m 3 ) 54, , Daily savings (m 3 ) Yearly savings (m 3 ) Yearly financial savings (MKD) Yearly financial savings (EURO) 509, , According to the calculated Annual Real Losses (source: Water Balance m 3, the achieved water savings of m 3 decreased the Real Loss to 4,37%).

29 Produced; Sold; Non Revenue (m3) NRW (%) OFFICIAL YEAR 2013 COMPANY DATA P.E. VODOVOD KUMANOVO Kumanovo-Volume (m 3 ) of water Produced, Sold, NRW; NRW (%) 12,000,000 10,000,000 8,000,000 6,000,000 4,000,000 2,000, Water Produced (m3) Water Sold (m3) Non Revenue Water (m3) NRW (%) Non Revenue Water Reduced (5,76%, m 3 ) Savings ( ,00 MKD, EURO)

30 LEAFLET - CAMPAIGN TO RAISE CONSUMER AWARENESS ABOUT THE IMPORTANCE OF WATER AND ITS SAVINGS Distributed on World Water Day Distributed to the consumers by employees of P.U. VODOVOD Kumanovo and volunteers of the Red Cross. Content World Water Day history and meaning Facts about the water Project Reduction of NRW in Kumanovo Appeal for regular payment of bills Recommendation for the rational use of water Explanation of a method for checking the presence of an internal leak Examples of increased water consumption through defect flushing cistern, tap, pipe.

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33 PROCEDURE BILLING AND COLLECTION 0 days Delivery of bills After 30 days from Warning letter prior to disconnection, pr eparing a list for transaction via Notary/Bailiff 1000 mkd debt and 45 days delay First phone call After 15 days Preparing a list of customers for disconnection Decision on disconnection Debt Collection After 15 days Second phone call After 15 days Delivery of warning notice before disconnection After 45 days from the first phone call Delivery of warning letter for unpaid bills

34 PROCEDURE MAINTENANCE AND OPERATION Leak register Complete a work order and fulfill the application Report Book 0m interventions receipt Application Requisition Warehouse issuance Restore document Reverse ACTIVITIES FROM LEAK REPORTING AND REGISTERING UP TO LEAK REPAIRING Leak report/ inspection Inform Police CCM and media Municipality- Inspection Daily working plan Work order Maintenance Mechanization

35 STRATEGY FOR REDUCTION OF WATER LOSSES

36 STRATEGY FOR REDUCTION OF WATER LOSSES Establish a common understanding of definitions, concepts and current approaches in NRW Current situation with the NRW in the utility Methodology for systematic reduction of water losses Establish a team to reduce NRW Calculate a water balance according to the IWA standard methodology Understanding of how much water is being lost and where Calculate performance indicators as basis for the development of a technical strategy for water loss reduction Understanding the different types of water losses, their causes and effects Activities to reduce physical water losses Prompt repairing of reported and discovered leaks Active leakage control by visual inspection of water supply and sewerage network Reducing NRW by active pressure management (stabilization and maintenance of the working pressure in the system at a minimum permitted level) Developing district meter areas (DMAs) to continuously monitoring leakage levels, pressure management, water quality and continuous supply Purchase of measuring equipment for analysis of water loss and leak detection Permanent inspection of the water supply network Implementation of SCADA system Reconstruction and rehabilitation of dilapidated pipelines Analysis of water consumption, recording daily diagrams and remote reading of water meters for large consumers Free telephone line 0800 Activities to reduce commercial water losses Control of consumers to detect illegal connections to the network Regular control of the accuracy, repairing and calibration of the water meters and their more frequent reading Proper installation of water meters Implementation of Automatic (remote) reading of water meters - AMR Preventing abuse of hydrants Eliminate the category Lump-sum consumers Correct dimensioning of the water meters at the larger consumers Installing water meters in the main shafts in front of the collective residential buildings Reducing water losses from communal consumption (unbilled legal consumption) Campaign to save water and meetings with local residents

37 Theoretical and practical training

38 Thank You for your attention Bojan Ristovski AQUASAVE ltd SKOPJE Tel: