Recycling Treated Municipal Wastewater for Industrial Water Use

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Recycling Treated Wastewater For Industrial Water Use in Minnesota MCES Project 070186 / LCMR 05-07d 5/1/07 Water Reuse Stakeholder Meeting April 24, 2007 Discussion Summary Partnered Project 1. Goal: to implement a project with the supplier, user, and regulators that documents the steps, obstacles, and decisions made from planning through operation. a. Purpose would be more for the institutional issues vs. the technical ones b. Multiple options or points of focus 2. MPCA would be interested in working with a wastewater utility and industry on this project. There was a good working team with Calpine and Mankato in developing that project. 3. How would a project be funded? a. There are national funding sources from WateReuse Foundation, AWWARF, WERF. Not many on industrial projects from these sources. 4. There is not a widespread understanding that there are water supply issues in MN. Education is required to show reuse is important for MN’s water resources. 5. There are different issues or considerations for adding reuse to existing infrastructure than for future facilities. Future WWTPs could be sited to incorporate industry, agricultural land, transportation, etc. around the beneficial reuse of water. 6. What criteria will be used to determine if reuse is necessary? If we look 50 years down the road, what will push the state to reuse? Will the TMDL process bring us there? Will our visionary approach to the metro area water supply indicate it is water supply? How about other MN communities? 7. Who would be in the project group? MPCA, MN OSHA, MDH with industry and wastewater utility. 8. Lead organization: a. Some participants felt it was too early to state this. b. Others thought it should be those that want to make it happen – the municipality or the industry. c. See regulator as the protector of citizen’s interests. d. Ex. Mankato/Calpine Corporation. 9. DNR supported working with a group with multiple agencies to look at opportunities for reuse or ways to promote reuse. 10. TMDL process is not an issue for a partnering project. Page 5 of 8
Recycling Treated Wastewater For Industrial Water Use in Minnesota MCES Project 070186 / LCMR 05-07d 5/1/07 Water Reuse Stakeholder Meeting April 24, 2007 Discussion Summary 11. Conservation. Our discussion today has not focused on this. It is important to ensure the project notes that all conservation practices should continue to be pursued and that water reuse presents an additional conservation practice. We should continue to reduce water use and what water we use we should recycle. Economic Incentives/Funding 1. What type of financial plan has been considered for a reuse system? Answer: none yet. 2. Proximity of a reuse customer to the WWTP would be important given transmission costs. 3. Funding and financing depends on the driver. In the case of MCES, if it is water quality driven then funding could follow the same method as done for treatment and discharge to our waterways – cost is shared in the metro area. 4. Priority List for PFA funding: a. Get more points or higher on list if discharge is to land treatment vs. receiving stream. This will help projects with irrigation reuse, but not reuse to industries. b. Need a rule change to get higher points for water reuse. 5. Concern expressed by industry if looking at reuse to offset costs required to treat wastewater based on revised water quality limits – and cost is transferred to the industry. 6. Industrial facility near a WWTP – why pay for the water if industry pays for pipe to get it there and provides any additional treatment for their water supply requirements? 7. Could the water utility structure the rates to provide more incentive for industry to consider reuse? a. Concern expressed that for those with few options and that have already reduced water use this would not be fair. b. Idea is to consider linking water utility and reclaimed rates. This is easier to do with a community that has same entity for both the water and wastewater utilities. 8. Need incentives to look ahead and be prepared – drivers may not be here now, but expect reuse will have a role in the future. Page 6 of 8
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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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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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!( !( !( !( !( !( !( !( !( !( !( !(
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Page 587 and 588: Institutional Issues Topic Discussi
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Page 599 and 600: Exhibit C Broader Base Stakeholder
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