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WAWTTAR
       Water and Wastewater Treatment
       Technologies Appropriate for Reuse

    A Tool for Planning Water and...
Conventional Wastewater and
     Reuse Feasibility Planning

            Facility Planning for Wastewater Treatment

     ...
Integrated Wastewater Treatment
      and Reuse Feasibility Planning

                      Reuse Opportunities
          ...
WAWTTAR Overall Objective

        Provide a tool for feasibility analysis of
    q

        wastewater treatment technolo...
WAWTTAR Program Objectives

        Provide a large (and user expandable) database of
    q

        treatment and reuse p...
WAWTTAR
               Database Components

        Existing Components (but can be edited)
    q

        »   Collection ...
Collection Systems, Discharge
    Standards, and Treatment Trains

        Collection Systems
    q

        » Cost per un...
Treatment/Reuse Processes

        Construction and O/M Resource Requirements
    q

        Construction and O/M Costs
  ...
Treatment/Reuse Processes

        Construction and O/M Resource
    q

        Requirements
        » Human - numerous la...
Treatment/Reuse Processes

         Construction and O/M Costs
     q

         » Costs per hydraulic, solids or organic
 ...
Treatment/Reuse Processes

         Operational Requirements
     q

         » Limits on influent flow and quality
      ...
Treatment/Reuse Processes

         Potential Social, Economic and
     q

         Environmental Impacts
         Referen...
Community Description

         Demographics - Population, Land Area,
     q

         and Per Capital Wastewater Generati...
Community Description
         Localized cost based on equivalent 1992
     »
         U.S. Construction Cost Index for ea...
Community Description

         Site Characteristics
     q

         Meteorological Characteristics
     q

         Reso...
Search for Feasible
                                                Treatment Trains
                                     ...
Treatment Process
            Selection Considerations

         Selecting among feasible treatment
     q

         proce...
WAWTTAR Output

         List of infeasible treatment trains with limiting
     q

         component identified
         ...
WAWTTAR Users

         Designed for
     q

         » Local engineers and planners (with wastewater
           training)...
WAWTTAR Users

         Field applications
     q
         » Jamaica (semi rural setting)
         » Bulgaria (municipal/i...
WAWTTAR Availability

         WAWTTAR Website
     q

           http://firehole.humboldt.edu/wawttar
         »

       ...
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WAWWTAR

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WAWWTAR

  1. 1. WAWTTAR Water and Wastewater Treatment Technologies Appropriate for Reuse A Tool for Planning Water and Wastewater Treatment Facilities Appropriate for Reuse Brad A. Finney and Robert Gearheart Humboldt State University 1
  2. 2. Conventional Wastewater and Reuse Feasibility Planning Facility Planning for Wastewater Treatment Treated Wastewater Discharge (Viewed as a Liability) Treated Wastewater (Viewed as an Asset) Reuse Planning for Urban, Industrial, or Agricultural Activities Ultimate Disposal 2
  3. 3. Integrated Wastewater Treatment and Reuse Feasibility Planning Reuse Opportunities (Specifies Wastewater Treatment Objectives) Wastewater Treatment Ultimate Disposal (May Constrain Reuse Opportunities) 3
  4. 4. WAWTTAR Overall Objective Provide a tool for feasibility analysis of q wastewater treatment technologies that » Focuses attention on the inherent value of treated wastewater effluent » Recognizes the reality that wastewater is reused » Identifies treatment technologies that are not appropriate for the target community 4
  5. 5. WAWTTAR Program Objectives Provide a large (and user expandable) database of q treatment and reuse processes Provide localized cost estimates and performance of q treatment technologies Incorporate target community resource availability q and cultural considerations into the technology screening process Provide reference material to serve as an education q tool for engineers and community planners 5
  6. 6. WAWTTAR Database Components Existing Components (but can be edited) q » Collection Systems » Discharge Standards » Treatment Trains » Treatment/Reuse Processes Problem Specific Component (user specified) q » Community Description 6
  7. 7. Collection Systems, Discharge Standards, and Treatment Trains Collection Systems q » Cost per unit area/Population Density Discharge Standards q » Discharge limits for water quality constituents Treatment Trains q » Collection of Treatment Processes in a specified sequence 7
  8. 8. Treatment/Reuse Processes Construction and O/M Resource Requirements q Construction and O/M Costs q Operational Requirements and Performance q Adaptability q Social, Economics, and Environmental Impacts q Reference Materials q 8
  9. 9. Treatment/Reuse Processes Construction and O/M Resource q Requirements » Human - numerous labor categories » Social/Cultural » Materials » Land area » Site constraints 9
  10. 10. Treatment/Reuse Processes Construction and O/M Costs q » Costs per hydraulic, solids or organic loading » Costs broken down into fractions related to energy, chemicals, labor, earthwork, manufactured equipment, structures, concrete, steel, and piping 10
  11. 11. Treatment/Reuse Processes Operational Requirements q » Limits on influent flow and quality Operational Performance q » Percent constituent removal Adaptability to q » upgrading » varying hydraulic loading » changes in influent quality 11
  12. 12. Treatment/Reuse Processes Potential Social, Economic and q Environmental Impacts Reference Information q » Text descriptions » Line drawings » Photos Seasonal Hydraulic Demand (Reuse q Processes Only) 12
  13. 13. Community Description Demographics - Population, Land Area, q and Per Capital Wastewater Generation » Current level and growth rate Economic Setting q » Planning period length » Inflation rate and capital recovery factor » Local cost (relative to US.) for each construction and O/M cost category 13
  14. 14. Community Description Localized cost based on equivalent 1992 » U.S. Construction Cost Index for each category in local setting Average Construction Cost Index 8000 7000 6000 5000 1992 - WAWTTAR base year for CCI 4000 3000 2000 1000 0 1935 1945 1955 1965 1975 1985 1995 2005 Year 14
  15. 15. Community Description Site Characteristics q Meteorological Characteristics q Resource Availability q » Human » Material Social/Cultural Considerations q 15
  16. 16. Search for Feasible Treatment Trains Process Resource Social/Cultural Reuse Quality Final Effluent Limitations Requirements Considerations Limitations Quality All Treatment Trains in Database Feasible Trains 16
  17. 17. Treatment Process Selection Considerations Selecting among feasible treatment q processes requires evaluating the characteristics and tradeoffs of each process Quantitative q » Capital costs, O/M costs, useful life, salvage value, land area requirements Qualitative q » Operational ease, reliability, ease of expansion, adaptability to reuse processes, esthetics 17
  18. 18. WAWTTAR Output List of infeasible treatment trains with limiting q component identified Feasible treatment trains ranked by minimum capital, q O/M, or total cost For each feasible treatment train q » Effluent concentrations user specified quality constituents » Solids production » Adaptability index » Land area requirements » Reuse area satisfied with and without storage reservoir » Potential environmental and cultural impacts 18
  19. 19. WAWTTAR Users Designed for q » Local engineers and planners (with wastewater training) doing community wastewater feasibility or facility planning (field use) » Government or NGO planners performing evaluations of consultant or donor proposals (office paper study) » Technical students, planners, government decision makers, and engineers (educational resource) 19
  20. 20. WAWTTAR Users Field applications q » Jamaica (semi rural setting) » Bulgaria (municipal/industrial setting) » West Bank and Gaza (municipal, and peri- urban setting) » Koror, Palau » La’ie, and Waialua - Hale’iwa, Oahu (rural Hawaiian communities) » Willits and Garberville, CA 20
  21. 21. WAWTTAR Availability WAWTTAR Website q http://firehole.humboldt.edu/wawttar » » Program and manual available for download » Opportunity to share info on new treatment processes 21

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