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Water Conservation PresentationWater Conservation Presentation
Kenneth G. Pyzocha, PE, CHMM, TURP
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Water Conservation PresentationWater Conservation Presentation
Discussion Outline
• Introduction• Water Program Management• Auditing Methodology• Water Balance and Metrics• Water Conservation Practices• Goal Setting• Recommendations
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Water Conservation PresentationWater Conservation Presentation
Introduction• Primary Goal: Water Use Elimination/Reduction
- Considerations:- Obvious Reductions
- Cost / ROI / Payback
- Specification / Quality
- Volume Reduction
- Water Reductions
- Availability
- Environmentally Responsible
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Water Conservation PresentationWater Conservation Presentation
Water Program Management• Driving Forces
• Importance to the operation• Cost of Doing Business• Effort vs. Benefits vs. Culture
• Location• New England is “Water Rich”• Climate Conditions• Population
• Regulatory• Basic Federal Baseline• Stringent State and Local• Ordinances / Controls / Bans
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Water Conservation PresentationWater Conservation Presentation
Water Program Management
Start By Asking the Following:
• Why am I considering this?
• Is water used in the most efficient manner?
• Is my inventory assessment correct: In vs. Out?
• How accurate are my measurements?
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Water Conservation PresentationWater Conservation Presentation
Auditing Methodology
• Site Visit / Site Evaluation- Preparation, Planning
• Source Evaluation and Inventory- Comprehensive or Project Specific
• Conservation Opportunities- Consider All
• Payback Analysis- Rough / Refined
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Water Conservation PresentationWater Conservation Presentation
Auditing Methodology• Process Changes
– BWADITW
• Water Use Analysis– Specification vs. Operating Standard
• Audit Report– Defined Summary
• Implementation Period– Set Completion Goals
• Follow Up– Results Confirmation
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Water Conservation PresentationWater Conservation Presentation
Water Balance and Metrics
• Identify all known water use sources• Team with knowledgeable site resources
- Obvious- No So Obvious- That Uses That Much Water???
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Water Conservation PresentationWater Conservation Presentation
Water Balance and Metrics
• Measuring Methods- Metering- Flow Rates- Equipment Specifications- Bucket Method- Vessel Sizing- Guess-timate- Note Variable Tendencies
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Water Conservation PresentationWater Conservation Presentation
Water Balance and Metrics
• What Condition is the Water/Wastewater in?- Water for Reuse / Recycle- Water for Irrigation / Sanitary- Needs Significant Pretreatment- Process Specification / Requirements- Health and Safety Concerns
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Water Conservation PresentationWater Conservation Presentation
Water Balance and Metrics
• WATER BALANCE IS THE KEY!
- Serves as the Basis for Accuracy
- Confirms Assumptions
- Verifies Expenditures
- Not Necessarily Perfect to the “Gallon”
- Serves Dual Purpose to Permit Confirmations
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Water Conservation PresentationWater Conservation Presentation
Water Conservation Practices
• Use/Reuse Caution!… Factors for Consideration- Health and Safety- Quality Considerations- Volume / Make Up- Pretreatment Requirements / Permitting- Equipment Needs- Widget Requirements- Back Up Supply
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Water Conservation PresentationWater Conservation Presentation
Water Conservation Practices• Industry Specific and Cross Functional• Use Percentages Can Vary Greatly• Industry Examples
– Metal Finishing– Research Laboratory– Pulp and Paper Mills– Health Care and Academic Institutions– Food Processing– Energy– Office
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Water Conservation PresentationWater Conservation Presentation
Water Conservation PracticesIndustrial, Municipal, Health & Academic:• Wash Systems• Spray Systems• Glass Cleaning• Rinse Tanks• Chiller / Cooling Towers• Energy Operations• Irrigation• Boiler Systems
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Water Conservation PresentationWater Conservation Presentation
Water Conservation PracticesCase Study Examples• Spray Nozzles – To HPLV• Free Flow – Solenoid Valve / Timers / Shutoff• Process Modification – Clean/Wetting/Drain• Flow Identification – Meter Installations• Process Modification – Hand Wipe vs. Hose• Equipment Exchange – Ultrasonic vs. Spray
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Water Conservation PresentationWater Conservation Presentation
Water Conservation PracticesCase Study Examples• Rinse Tanks – Counter Current Rinsing• Irrigation – Reduce and/or Collection Tank• Once Through Cooling – Closed Loop System• Reject Reuse – Blowdown and RO Reject• Equipment Exchange – Air Cooled vs. Water• Process Modification – Batch vs. Flow
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Water Conservation PresentationWater Conservation Presentation
Water Conservation PracticesCase Study Examples• Process Modification – Hang vs. Drag Out• Lab Sink – Aerators• Equipment Exchange - Geothermal• System Capacity – Maximize Efficiency• Stormwater Reuse – Cooling Tower/Sanitary• System Cycle – Operations Cycle Reductions
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Water Conservation PresentationWater Conservation Presentation
Water Conservation Practices
Case Study Examples• Process Elimination – Unnecessary Function• Computerization – Automated vs. Manual • Thermal Removal – Sink Modifications• Process Modification – Rinse Tank vs. Spray• Equipment Alterations – Adding Tank Covers• Fixtures & Equipment – Low/No Flow Option
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Water Conservation PresentationWater Conservation Presentation
Goal Setting
• Estimate Maximum Initially• Down to Zero?• Estimated Average Reduction
- Important For Cost Analysis- Allows For Planning Purposes- Permit Allowances- Balances Expectations
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Water Conservation PresentationWater Conservation Presentation
Goal Setting
• Based on the Analysis, Decisions Can Be Made• Project Can Be Tabled for Future Review• Employee Training• Facility Maintenance*• Smart Fixes• Action Plan
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Water Conservation PresentationWater Conservation Presentation
Goal Setting• General Business Target Cost Analysis
– Example: Plus Hidden Costs– Project Identification:
Washer Operations – Equipment Retrofit– Proposed Actions:
Retrofit/Upgrade Equipment Systems – Existing Water Consumption:
9,690 gpd, 2,422,500 gpy– Estimated Water Consumption Post Conservation:
Estimate a 20% overall flow reduction 7,752 gpd, 1,938,000 gpy– Water Savings:
1938 gpd, 484,500 gpy– Cost Savings:
484,500 gpy = 64,773 c.f. = 647.73 c.c. = @$8.48/c.c. X 647.73 = $5,493/year
– Estimated Project Cost:20 systems at $575 average per system = $11,500
– Simple Pay Back (in years):$11,500/$5,493 = 2.1 years
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Water Conservation PresentationWater Conservation Presentation
Recommendations
• Driving Forces: Rating / Prioritizing• Location: Water Availability• Regulatory: Decision Making Implications• Cost Savings • Capital Costs• Operating Costs• Not This Year Does Not Mean Never
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Water Conservation PresentationWater Conservation Presentation
Recommendations
• Target Elimination / Reduction• Be Realistic – Accuracy Counts• Involve All Resources• Much Good Information Available• Reinventing Wheel Not Necessary• Make Noise About Your Accomplishments
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Water Conservation PresentationWater Conservation Presentation
Questions:Kenneth G. Pyzocha, PE, CHMM, TURP
Wakefield SolutionsManager – Environmental Health and Safety
[email protected](603) 635-5177