Recycling Treated Municipal Wastewater for Industrial Water Use

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Section 3 Inventory of Major WWTPs and Potential Industrial Reuse Demands Flint Hills Resources is the largest non-power related industrial water user in this watershed. Approximately 7 mgd was pumped from its well field in 2004 for its total facility use. They are in the process of system modifications to reuse their process water rather than add an additional well. Municipal WWTP effluent use at Flint Hills Resources was evaluated during the facility planning stages of the Met Council’s Empire WWTP expansion; the outfall for this plant will be moved to discharge into the Upper Mississippi River watershed and will be within 2 miles of Flint Hills Resources. While earlier discussions on reclaimed water from Empire were not pursued because of water quality issues, notably high chlorides in the Empire WWTP effluent, it is possible that potential future Flint Hills Resources expansions could consider this source. Also, the industrial areas along the outfall could benefit from this potential 24 mgd source of reclaimed water. More detailed investigations of this area will be conducted in Task 2. Factors Influencing Potential for Industrial Reuse The majority of the Lower Mississippi River watershed has a good bedrock source water supply that most communities rely on as their primary water source. Most of the watershed is in Ground Water Area 3 of the state, with eastern regions in Area 2 and the northern reaches in Area 1. All three areas have a reliable and productive bedrock aquifer. Area 3 has extensive near-surface karst areas that result in aquifers being vulnerable to contamination. There is wide-spread nitrate contamination in near-surface aquifers as well occurrences of pesticides and other contaminants. The susceptibility to contamination index places this watershed in the medium to highest range. Area 2 on the western edge of the watershed has a more productive buried sand aquifer, but still limited surficial sand aquifers. The northern watershed, in Area 1, has a reliable supply for all three general aquifer levels. Portions of the Lower Mississippi River watershed will be affected by the TMDL for Lake Pepin. The planning process on this TMDL has established preliminary targets of phosphorus and solids loading reductions of one-half into Lake Pepin. While nonpoint sources are significant contributions to this load, it is likely that most point sources will be considered for loading reductions. Minnesota River Industrial Water Use With the exception of water for once through cooling of Xcel Energy’s power plant, industrial water use in the watershed is dominated by the demands of the agricultural processing industry. As shown in Figures 3.11a and 3.11b and Table 3.11a, over 60% of the ground water withdrawals were for agricultural processing facilities. While the watershed houses a diverse set of industries, most of the other industries have fairly small demands. 3-18 Craddock Consulting Engineers In Association with CDM & James Crook WWReuseTM1_Sec 3_final.doc
WATER USE (MGD) Section 3 Inventory of Major WWTPs and Potential Industrial Reuse Demands Craddock Consulting Engineers 3-19 In Association with CDM & James Crook WWReuseTM1_Sec 3_final.doc 12 10 8 6 4 2 0 241 242 243 244 245 246 247 248 249 USE CODE Ground Water Surface Water 241 Agricultural Processing 242 Pulp and Paper Processing 243 Mine Processing 244 Sand and Gravel Washing 245 Industrial Process Cooling Once-through 246 Petroleum-Chemical Processing, ethanol 247 Metal Processing 248 Non-Metallic Processing 249 Industrial Processing Figure 3.11a. Industrial Processing Water Use in the Minnesota River Watershed, 2004 WATER USE (MGD) 350 300 250 200 150 100 50 0 222 USE CODE Source: MDNR, 2004 Ground Water Surface Water 222 Steam Power Cooling - Once through Figure 3.11b. Power Generation Water Use in the Minnesota River Watershed, 2004 Source: MDNR, 2004
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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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Page 124 and 125: Figure 3.6. Industrial Reuse Custom
Page 128 and 129: Figure 3.7b. Ground Water Availabil
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Page 158 and 159: Figure 3.14b. Rainy River Watershed
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Page 182 and 183: Figure 3.22. Rogers WWTP - Industri
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State Hwy 36 ! Figure 3.28. St. Cro
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Section 3 Inventory of Major WWTPs
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Section 3 Inventory of Major WWTPs
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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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Section 5 - Costs Table of Contents
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TM3: Recycled Wastewater System Com
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WWTP 1 - 2 - 3 - 4 - 5 - 1 Treatmen
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o Synthetic medium o Two-stage Surf
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Table 13 WATER REUSE SYSTEM COST OF
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Cost of Service, $/1000 gallon 1.00
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Cost of Service, $/1000 gallons 8.0
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Appendix A Water Reuse Regulatory E
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Table A-1. 2000 California Water Re
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California Department of Health Ser
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Other Media Type Filters Fuzzy Filt
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Appendix B TECHNICAL MEMORANDUM Rec
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Appendix B Reclaimed Water Transmis
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Exhibit 1 Transmission Main Cost To
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Pipe Installation Data (DR 18 PVC P
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Equipment Costs (with O&P) Item Des
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Water Reuse Pipe Line Construction
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Construction Unit Costs Item (2006
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Crew Costs (with O&P) St. Paul Pres
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Capital PROJECT Cost Curves for Rec
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Diam (in) Annual Average Day Flow A
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Diam (in) Annual Average Day Flow A
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Pipe Capital Project Cost, $ Millio
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Pipe Capital Project Cost, $/1000 g
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Annual Pipe Average Annual Velocity
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Pipe Capital Project Cost, $ Millio
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Exhibit 3 Water Reuse System O&M Co
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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 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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