SUSTAINABLE SOLUTIONS AND COST-SAVING APPLICATIONS FOR SMALL WATER SYSTEMS: CASE STUDIES

Transcription

1 1 SUSTAINABLE SOLUTIONS AND COST-SAVING APPLICATIONS FOR SMALL WATER SYSTEMS: CASE STUDIES 2010 GWPC Water/Energy Sustainability Symposium And Annual Forum Pittsburgh, PA September 26-29, 2010

2 PRESENTERS 2 James J. Rhoades, Jr., PE Project Manager/Water Group Manager Registered PE: PA, DE 17 years of Experience Licensed Water & Wastewater Treatment Plant Operator in PA Michael J. Peleschak, PE Project Engineer Registered PE: PA 11 years of Experience Certified Sewage Enforcement Officer alfred benesch & company

3 PRESENTATION OVERVIEW 3 Introduction Background Case Studies - Innovative sustainable solutions for technical issues - Ways to minimize life-cycle costs - Sustainable O&M, reducing energy use and costs Future Questions

4 4 WHY IS OUR CURRENT FOCUS ON SUSTAINABILITY? Investment Needs and Shortfalls in Drinking Water: 2002 EPA Gap Analysis: 20-year funding gap from $45B to $263B. Annual shortfall of $11 B. ASCE 5-Year: Needs $255B; Estimated Spending $146.4B; Projected Shortfall $108.6B EPA DW Infrastructure Needs Survey & Assessment: Need $334.8B over 20 years PA Sustainable Water Task Force $38.9B needed over 20 years

5 WHY IS OUR CURRENT FOCUS ON SUSTAINABILITY? 5 Client Needs Due To: Aging infrastructure New regulations with price tag to match New systems/expansion of service for more revenue/economic development Ongoing O&M assistance keep things running Increased annual O&M costs (electricity #1) Deferred maintenance due to limited financial resources Water System Limitations: Technical Need to meet current regulations Managerial Many rural systems have volunteer operators Financial - Public water systems have limitations on rate increases (affordability criteria, political influence, economic condition impact)

6 CASE STUDIES 6 Innovative Sustainable Solutions for Technical Issues

7 7 MADISONBURG WATER WORKS MEMBRANE FILTRATION PLANT Pilot Study Innovative Technology Permit from PADEP 90% of Backwash Recycled Used Existing Foundation Tank (3 Sections) Infiltration Bed in EV Watershed 2010 ACEC/PA Diamond Award

8 8 MADISONBURG WATER WORKS MEMBRANE FILTRATION PLANT

9 9 NELSON TOWNSHIP AUTHORITY CONVENTIONAL FILTRATION PLANT Riverbank Filtration Natural pre-filtration, reduce energy needs SCADA

10 10 NELSON TOWNSHIP AUTHORITY CONVENTIONAL FILTRATION PLANT

11 11 NELSON TOWNSHIP AUTHORITY CONVENTIONAL FILTRATION PLANT Raw Max Settled Max Filtered Combined 1000 Turbidity (NTU) Turbidity (NTU) River Water WTP Influent Final Effluent Jan-07 Feb-07 Mar-07 Apr-07 May-07 Jun-07 Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 Jan-08

12 12 AUSTIN BOROUGH WATER DIRECT FILTRATION PLANT SCADA Source Water Collection (Springs) Marcellus Shale drillers bulk-hauling station

13 13 CASE STUDIES Sustainable Ways to Minimize Life-Cycle Costs Capital Costs Solar Power for Remote Telemetry Innovative Construction Techniques O&M Costs - Reduce Amount of Treated Water Leak Detection Water Conservation UAF Reduction

14 14 MOREA CITIZENS WATER COMPANY SOLAR POWERED SCADA SYSTEM Solar panels to power the new controls saved over $20,000 in electrical system construction costs. Wireless radio controllers eliminated the need for telephone lines saving $15,000. MCWC no longer loses millions of gallons of water per year. Electrical & treatment expenses associated with long system run times have declined by almost 50%. Average daily demand reduced from 70,000 gpd to 30,000 gpd.

15 MAHANOY TOWNSHIP AUTHORITY WATER DISTRIBUTION SYSTEM UPGRADES 15 Value Engineering/Asset Management Study Bentley WaterCAD Hydraulic Model 20-year Life Cycle Cost Analysis Project Overview: 21,000 linear feet of new water mains 1,300 service connections 44 fire hydrants and associated appurtenances Outcome: Improved water quality, pressures, and fire protection Eliminated dead ends, lines prone to freezing, and shared services Reduced UAF from >50% to <25% Delinquent accounts from $80,000 to $11,000 ADD Reduction of 200,000 GPD (650k to 450k)

16 16 MIFFLIN TOWNSHIP WATER AUTHORITY REDUCE UAF System Deficiency UAF over 70% (ADD 230,000 gpd) Under Consent Order from PA DEP Corrective Action Developed CAP for PA DEP Leak Detection Program Service Line Replac mt Program Initiated a Trans Main Project WaterCAD Modeling Dedicated Main from Well to Storage Tank PRV Stations in Dist Sys ave pressures over 120 psi SCADA System UAF Down to 52%

17 17 CASE STUDIES Sustainable O&M, Reducing Energy Use Sustainable Planning Must think long-term in planning stages Total Quality Engineering (TQM ) Replace Old Equipment/Controls Use of SCADA Use of VFDs Smart Meters Modeling/Mapping/GIS Know what you have and where Model improvements before implementation Implement Asset Management Long Term Plan to Replace/Rehab Assets Budgeting/Rate Structures

18 18 SCADA (SUPERVISORY CONTROL AND DATA ACQUISITION) Why SCADA? Better Operations Emergencies/Alarms Data Collection/Management Regulatory Reporting Remote Observation/Control Real-time Leak Detection (ALC Active Leak Control) Identify Preventative Maintenance Tie to Mapping/GIS Asset Management System

19 MODELING/MAPPING/GIS 19 Bentley WaterCAD WaterGEMS HAMMER SCADAConnect Mapping/GIS GIS to Optimize O&M Asset Management

20 20 FUTURE Sustainable Design/Management Protects Public Health Protects the Environment Promotes Economic Development Promotes Innovation Promotes Effective Management Promotes Efficient O&M Triggers New Financing Strategies Incentives Bottom Line Lower Customer Rates More SRF Funding 2011 PENNVEST Green Project Reserve (ARRA) Grants Fed (ARRA)/Sate (PA CFA) Be Shovel Ready!

21 21 THANK YOU/QUESTIONS?? James J. Rhoades, Jr., P.E Michael J. Peleschak, P.E