Recycling Treated Municipal Wastewater for Industrial Water Use

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TM3: Recycled Wastewater System Components and Costs Recycling Treated Municipal Wastewater for Industrial Water Use reclaimed water and some also treat an incoming water supply to meet Tertiary 1-3 water quality levels. A comparison of reclaimed water system costs to an industry’s existing water supply cost must include any onsite treatment costs currently incurred by the industry. The cost analysis indicates that for a 1 mgd supply transmitted 5 miles, the costs for lower levels of treatment can compete with potable water supplies. Most industries with a water demand of 1 mgd or less are more likely to use a potable source, depending on their water quality requirements. For these industries, reclaimed water could provide an alternative to a potable source. As the demand increases to 2 mgd, the total system cost for a base water quality is under $1.00/1000 gallon – similar to potable supplies provided by utilities using ground water supplies with minimal treatment. While industries with their own water supply system typically have water supply costs less than a $1.00/1000 gallons, these costs reflect areas with high quality, abundant sources close to the industry. For areas with water supply limitations, where ground water sources are a considerable distance or only a surface water source is available (which could also be a significant distance from the industry and require more treatment costs) reclaimed water could be a more economical water supply. Another consideration in comparing reclaimed supplies to potable water supply systems is the infrastructure capacity of the potable water system and the impact on capital expenditures. Increased domestic demand can be met without expansions if a portion of the industrial sector uses reclaimed water and the total demand for the potable water system is kept constant. The economic viability of water reuse in Minnesota will depend on the specific match of WWTP effluent quality to a customer’s water quality requirements and the availability of traditional water supplies in the area. The most significant reclaimed water quality issue for Minnesota appears to be hardness and high salts. While data across the state is lacking, given the general water supply characteristics, it is expected that many WWTPs will have effluent water quality that is not suitable for a significant portion of industrial water uses without treatment for dissolved solids. The evaluation of site-specific applications with more refined cost estimating will narrow the range of costs for supplying reclaimed water to select industries in Minnesota. 6.0 References CDM, 2006. Metro Wastewater Reclamation District, City of Aurora, Sand Creek Basin Wastewater Master Plan – PAR 1005. Technical Memorandum No. 8. CDM, 2004. Durham County Reuse Wastewater Facilities Project Preliminary Engineering Report. CDM, 2003. Wastewater Reclamation District, City of Aurora Wastewater Utility Plan. 42 Craddock Consulting Engineers In Association with CDM & James Crook TM3-Component&Costs_0707
Cost of Service, $/1000 gallons 8.00 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 $8.88 - Base $15.81 - Tertiary 1 $11.77 - Tertiary 2 $13.73 - Tertiary 3 $16.64 - Tertiary 4 Base Tertiary 1 - Conventional Tertiary 2 - Membrane Filtration Tertiary 3 - Membrane Softening Tertiary 4 - With GAC $2/1000 gallons Typical Potable Water Supply Cost 0.1 0.5 1 1.5 2 3 4 5 10 15 30 Reclaimed Flow/Demand, mgd Figure 15. Cost of a 5-Mile Transmission Water Reuse System to Meet Different Water Quality Requirements
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Acknowledgements This study was con
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Contents Recycling Treated Municipa
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Contents Recycling Treated Municipa
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Executive Summary Vision Executive
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Section 1: Introduction 1.1 Project
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Table 1.2. Water Use in Minnesota,
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Section 1: Introduction Recycling T
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1.5 Summary Section 1: Introduction
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Section 2: Recycled Wastewater Dema
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Figure 2.9. Ground Water Contaminat
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Table 2.8. Ethanol Plant Capacity a
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2.7 References Section 2: Recycled
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Section 3: Recycled Wastewater Syst
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Water Quality Overview The total co
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Industrial Water Quality Concerns S
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Emerging Contaminants of Concern Se
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3.4 Storage and Transmission Overvi
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Cost by Standard Industry Categorie
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Costs and Planning Considerations S
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Section 4: Implementation Considera
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Economic Incentives and Risk Assess
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Section 5: Summary and Potential Ne
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Long-Term Vision Section 5: Summary
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Exhibit A: California Water Recycli
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Metropolitan Council Recycling Trea
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Contents Section 1 - Introduction C
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Craddock Consulting Engineers In As
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Section 1 Introduction Craddock Con
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Craddock Consulting Engineers 2-1 I
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Section 2 Implementation Considerat
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Table 2.4. Examples of State Water
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Craddock Consulting Engineers 3-1 I
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Section 3 Inventory of Major WWTPs
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Figure 3.6. Industrial Reuse Custom
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Figure 3.7b. Ground Water Availabil
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") Figure 3.8c. Cedar River Watersh
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") ") ") ") Figure 3.10c. Lower Mis
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Figure 3.12c. Mississippi River - H
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Figure 3.14b. Rainy River Watershed
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") Figure 3.16c. St. Croix River Wa
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Figure 3.18 Metro Area Industrial R
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G G Flying Cloud Dr !! G! G Figure
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Figure 3.22. Rogers WWTP - Industri
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G G G! Dodd Rd GG Figure 3.24. Rose
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G Figure 3.26. Hastings WWTP - Indu
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State Hwy 36 ! Figure 3.28. St. Cro
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Water Use Code Categories Minnesota
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Minnesota Water Use for All Categor
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Air Conditioning 0.2% Waterworks 15
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Minnesota Water Use, 2000-2004 - St
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Minnesota Water Use in 2004 (withou
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Minnesota Water Use in 2000 (withou
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UseCode by Year Minnesota Power Gen
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Water Use (MGD) Water Use (MGD) 350
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Minnesota Industrial Processing Fac
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Minnesota Industrial Processing Fac
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Water Use (MGD) Water Use (MGD) 120
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Water Use (MGD) Water Use (MGD) 13.
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Overview There are no federal regul
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Appendix B Status of Water Reuse Re
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Table 4. Examples of State Water Re
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Setback Distances Appendix B Status
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WATER USE (MGD) WATER USE (MGD) 3.5
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Table 3.9a. Industrial Water Use in
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Table 3.10a. Industrial Water Use i
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Table 3.10d. Industries in the Lowe
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WATER USE (MGD) WATER USE (MGD) 8 7
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Table 3.11d. Industries in the Minn
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Table 3.11d. Industries in the Minn
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WATER USE (MGD) WATER USE (MGD) 12
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Table 3.12c. Industries in the Miss
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Table 3.17c. Industries in the West
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MN Permit No Facility Minnesota Mun
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MN Permit No Facility Minnesota Mun
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Minnesota DNR Waters 2005 Ground-wa
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Permit No. Organization NAICS Code
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TM2: Sampling Plan and Results Recy
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Recommended Limits for Various Indu
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Exhibit B Blue Lake WWTP Sampling R
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MCES Blue Lake Plant Final Effluent
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Date Day of Wk MCES Blue Lake Plant
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MCES Empire Plant Final Effluent Sa
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Date Day of Wk 10/24/06 Tuesday 10/
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Exhibit D Metropolitan (Metro) WWTP
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MCES Metropolitan Plant Final Efflu
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Date Day of Wk 4/19/07 Thursday 4/2
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MCES Seneca Plant Final Effluent Sa
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Date Day of Wk 10/8/06 Sunday 10/9/
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Page 368 and 369: Section 5 - Costs Table of Contents
Page 370 and 371: TM3: Recycled Wastewater System Com
Page 374 and 375: WWTP 1 - 2 - 3 - 4 - 5 - 1 Treatmen
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Page 403 and 404: Table 13 WATER REUSE SYSTEM COST OF
Page 409 and 410: Cost of Service, $/1000 gallon 1.00
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Page 423 and 424: Appendix A Water Reuse Regulatory E
Page 425 and 426: Table A-1. 2000 California Water Re
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Page 431 and 432: Appendix B TECHNICAL MEMORANDUM Rec
Page 433 and 434: Appendix B Reclaimed Water Transmis
Page 435 and 436: Exhibit 1 Transmission Main Cost To
Page 437 and 438: Pipe Installation Data (DR 18 PVC P
Page 439 and 440: Equipment Costs (with O&P) Item Des
Page 441 and 442: Water Reuse Pipe Line Construction
Page 443 and 444: Construction Unit Costs Item (2006
Page 445 and 446: Crew Costs (with O&P) St. Paul Pres
Page 447 and 448: Capital PROJECT Cost Curves for Rec
Page 449 and 450: Diam (in) Annual Average Day Flow A
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Page 453 and 454: Pipe Capital Project Cost, $ Millio
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Diam (in) Annual Average Day Flow (
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Pumping Cost, $/1000 gallons 0.095
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Water Reuse System Estimated Cost o
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WATER REUSE SYSTEM COST OF SERVICE
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Appendix D-1 Water Reuse System Cos
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Water Reuse System Estimates of Pro
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Cost of Service, $/1000 gallon 2.00
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Cost Curves as Basis for Tertiary 1
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Secondary Treatment Assumptions Sus
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Craddock Consulting Engineers 1 In
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TM4: WWTP Effluent Quality Recyclin
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Frequency of Occurrence, % Frequenc
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No. of Plants Total Permitting Desi
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Frequency of Occurrence, % Frequenc
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No. of Plants Total Permitting Desi
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Craddock Consulting Engineers 1 In
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1.0 Introduction This technical mem
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Exhibit A Regulatory Stakeholder Me
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MCES Recycling Treated Wastewater f
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Municipal Wastewater Reuse Regulato
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Exhibit B Industry Stakeholder Meet
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Recycling Treated Wastewater For In
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Institutional Issues Topic Discussi
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Institutional Issues Topic Discussi
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Exhibit C Broader Base Stakeholder
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Recycling Treated Municipal Wastewater for Industrial Water Use

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