Water Reuse and Wastewater Management
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Water Reuse and Wastewater Management

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The workshop will cover innovative water reuse and wastewater treatment options for commercial, institutional and medium-large residential development applications with an emphasis on environmental ...

The workshop will cover innovative water reuse and wastewater treatment options for commercial, institutional and medium-large residential development applications with an emphasis on environmental protection, cost effectiveness and simplicity of Operations & Maintenance. In addition to regulatory requirements, the key environmental drivers that are the basis for sustainability water management design will be described.

The presenter was Pio Lombardo, PE, President of Lombardo Associates, Inc. (LAI).

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    Water Reuse and Wastewater Management Water Reuse and Wastewater Management Presentation Transcript

    • Water Reuse & Wastewater Management Sustainable Best Practices Pio Lombardo, P.E. Lombardo Associates, Inc. Newton, MA 02467 Pio@LombardoAssociates.com www.LombardoAssociates.com September 25, 2008
    • Credentials & Experience •Over 35 years’ experience in wastewater management, planning and implementation •Engineer of Record for over $200 million of wastewater management projects throughout the US •Authored numerous USEPA manuals on decentralized wastewater management •Limnology & water quality expertise •Corporative Execute for international environmental engineering firms •Design/Build/Operate Experience •Recipient of ENR Construction Man-of-the-Year Candidate Award •LAI received the ACEC Engineer of Excellence Award •Registered Engineers in 29 States
    • Project Types  Commercial Development  Residential Development  Institutional
    • EMERGENT WETLAND
    • Water Use Efficiency & Water Reuse • Minimize Potable Water Demand • Roof Runoff + Stormwater Reuse • Wastewater Reuse
    • Commercial Development Projects  Shopping Centers  Office / Retail
    • No Net Discharge System Rain Collection Wastewater Wastewater Collection Treatment Stormwater Rain Collection Treatment Storage Stormwater Landscape In-Building •No Net Discharge Irrigation Reuse •Minimizes Potable Water Demand (50-70% Reduction)
    • Malibu- La Paz Development Water Reuse – No Discharge System The No Wastewater Discharge is achieved by:  In-Building Reuse – Toilet Flushing  Landscape Irrigation – Roof Runoff & Stormwater Reuse Malibu La Paz – City Hall Village Green  11 Commercial Buildings  2 Restaurants (175 seats/each)  Proposed New City Hall
    • Malibu- La Paz Development Design Flow: 28,000 gpd / 23,000 gpd With the Water Reuse, Potable Water Demand will be 14,200 gpd… a 56% Reduction Malibu La Paz – Entry
    • Malibu Creek Plaza, Malibu, CA 16,000 gpd Shopping Center Malibu Creek Plaza • Achieving Title 22 Unrestricted Water Reuse Requirements • Equivalent to ~200 Residential Units
    • Malibu Creek Plaza, Malibu, CA
    • Malibu- Ioki Development Water Reuse – No Discharge System  Environmentally Sensitive Area, adjacent to the famous Surfrider Beach in Malibu, CA  Combination of Office & Retail buildings  Integrated Wastewater- Stormwater Irrigation System
    • Malibu- Ioki Development Design Flow: 20,800 gpd / 18,200 gpd Without Water Reuse: In-Building Water Demand = 12,970 gpd Irrigation = 10,700 gpd = 23,670 gpd With Water Reuse: Potable Water Demand = 10,185 gpd 57% REDUCTION
    • Urban – Mixed Use Development Wastewater Treatment Plant Reuse Plan
    • Commercial Development Projects  Wastewater Reuse for Toilet Flushing  Greenhouse - Wetlands
    • Dense Urban Development Wastewater Treatment Plant Reuse Plan Westwood Station On-Site Wastewater System Preliminary Economic Analsys prepared by Lom bardo Associates, Inc. - Novem ber 9, 2006 Design Flow 50,000 gpd 18,250,000 gallons per year (gpy) 18,250 1,000 gpy Annual Cost with Sewer Connection 2005 Westwood Water Use Rate $ 3.97 per hundred cubic feet (HCF) 2005 Westwood Sewer Use Rate $ 13.95 per hundred cubic feet $ 17.92 per HCF $ 23.96 per 1,000 gallons 1. Annual Water & Sewer Use Avoidance Costs 50,000 gpd 18,250 1,000 gpy Annual Water Use Cost $ 96,862 Annual Sewer Use Cost $ 340,358 Annual Total Water & Sewer Cost $ 437,219
    • Dense Urban Development Wastewater Treatment Plant Reuse Plan On-Site Wastewater Reuse System Range of Estimated Annual O&M Costs Achievable Low End Safe High End 1. Annual O&M Costs - Est. Budget Range $ 100,000 $ 150,000 2. Estimated Net Annual Savings $ 337,219 $ 287,219 3. Simple Payback Period 10 years 4. "Maximum Allowable" Capital Cost of Reuse $ 3,372,193 $ 2,872,193 System 5. Can reuse system be implemented for less than Initial Capital Cost estimate = $3,025,000 Allowable Capital Cost ? Notes: 1. Amenity value of greenhouse not considered 2. Impact of continuing rising MWRA rates - 9.8% for 2006 - not considered 3. Value of LEED points not considered
    • Residential Development Projects  Nitrogen Sensitive Coastal Areas
    • Mashpee, MA – 5,226 gpd Residential &Commercial Site •24 Units Mixed Housing (40B) DRAINFIELD PUMP •9,800 SF Commercial STATION BIOFILTER NITREX™ Drainfield FILTER Pump Station SEPTIC TANK •TN < 3 mg/l BioFilter •Monthly O&M Visits •Electricity Use - $0.75 / day •No chemical Addition NitrexTM Filter Niitrex Filter •Normal Septage Removal
    • Eastham, MA – Brackett Landing Cape Cod Residential Development Producing Water with Total Nitrogen < 3.0 mg/l Design Flow: 10,000 gpd
    • Chincoteague, VA 3,900 gpd Commercial System RECIRCULATING PEAT FILTER AEROBIC TREATMENT SYSTEM  RESIDENTIAL SYSTEM  TOTAL NITROGEN < 3 mg/l
    • Merced, CA 330 gpd Institutional System Gurr Road Septic Tank Fire Station Recirculating Media Filter NitrexTM Filter Recirculating Tank  Nitrogen Removal System as an addition to the Septic System
    • Campus Water Use and Wastewater Generation Analysis
    • Annual Residential Water & Sewer Charges for Major US Cities Typical Water Charge = $3.08 / 1,000 gallons Typical Sewer Charge = $4.63 / 1,000 gallons Typical Combined Charge = $7.71 / 1,000 gallons Boston Water Charge = $4.40 / 1,000 gallons Boston Sewer Charge = $5.39 / 1,000 gallons Boston Combined Charge = $9.79 / 1,000 gallons
    • Annual Residential Water & Sewer Charges for Major US Cities ($/1,000 gallons) Water Sewer Combined Boston, MA $4.40 $5.39 $9.79 Columbus, OH $2.62 $3.58 $6.20 Dallas, TX $2.31 $3.65 $5.97 Indianapolis, IN $2.74 $2.13 $4.87 Jacksonville, FL $2.24 $4.74 $6.98 Los Angeles, CA $2.91 $3.35 $6.26 MWRA Service Area $4.46 $6.72 $11.18 New York, NY $2.41 $3.84 $6.25 Philadelphia, PA $3.43 $4.41 $7.84 Portland, ME $3.05 $8.48 $11.53 Providence, RI $3.44 $3.79 $7.23 Saint Paul, MN $2.27 $3.55 $5.82 San Diego, CA $4.60 $5.36 $9.96 San Francisco, CA $3.33 $7.45 $10.79 Seattle, WA $4.63 $9.01 $13.64 Washington, DC $3.21 $4.51 $7.72
    • Analysis Process •Analysis of Water Use by Meter – Daily, Seasonal and Annual •Use Profile •Wastewater Generation Analysis •Identify Water Use / Wastewater Opportunities •Economic Analysis of Water / Sewer •Quantify Potential Savings •Conceptual Design & Capital and O&M Cost of Projects to Achieve Potential Savings
    • Use Profile •Wastewater Generation Analysis •Toilet Flushing/Showers/Food Related •Laundry •Laboratory •Cooling Towers and Power Plant Blowdowns •Academic Laboratory Equipment •Other
    • Cost Analysis •Financial Situation – Existing •Using Existing and Projected Water & Sewer Rate •Annual Water Cost •Annual Sewer Cost
    • Opportunities Identification •Identify Water Use / Wastewater Opportunities •Conservation •Reuse •Toilets •Cooling Towers •Irrigation •Independent Laundry Reuse Systems •Others
    • Evaluation •Conceptual Design and Capital and O&M Costs of Projects to Achieve Potential Savings •Simple Financial Analysis •Payback Plan •Return on Investment
    • Non – Domestic Water Conservation Opportunities – Project 1 Water Quantity Savings Potential 108,000 gpd Water/Sewer Dollar Savings Potential $339,000/yr •Collect •CUP Cooling Tower and Boiler Blowdown •RO Rejects •Vacuum Pump Cooling Water •Roof Rainwater •Humidifier Condensates •Treat water at Facility •Reuse Treated Effluent for Cooling Tower Make-Up •With payback of ten (10) years, simple 10% ROI $3.4 million could be spent
    • Non – Domestic Water Conservation Opportunities – Project 2 Water Quantity Savings Potential 179,000 gpd Water/Sewer Dollar Savings Potential $560,000/yr •Evaluate Underground Use of a Location for Stormwater/Wastewater Storage/Treatment Facility •Treat Stormwater/Wastewater for non-potable water use •With payback of ten (10) years, simple 10% ROI $5.6 million could be spent
    • Dispersal Systems
    • Dispersal - Drip Irrigation
    • Drip Field
    • LEACHFIELD PRSSSURE DISTRIBUTION TEST
    • LEACHFIELD (BURIED)
    • Disinfection + Emerging Contaminants Removal •UV •Ozone
    • Malibu Creek Plaza, Malibu, CA Ozone – UV Disinfection
    • Questions / Answers