A new Minnesota Department of Commerce, Minnesota Pollution Control Agency and MnTAP project, funded through a grant from the U.S. Department of Energy, aims to increase energy efficiency (E2) in Minnesota municipal wastewater treatment plants (WWTP) and scope opportunities for onsite power generation. The project will run through 2017.
The primary goals of the project are to:
- help wastewater facilities lower operating costs through improved energy efficiency, and
- provide up-to-date information to help facilities and city staff make informed decisions.
Wastewater treatment is a highly varied industry in Minnesota, both in the amount of energy consumed and the selection of treatment operations and equipment. Across the U.S., WWTPs are responsible for 1.5% of U.S. electrical consumption. Energy is one of the largest contributors to plant operational costs, and has the greatest potential for cost reduction. MnTAP is looking for treatment plants to participate in a range of efforts to improve plant energy performance to reduce costs.
Energy Efficiency Training
Operating efficiently–energy conservation for small to medium wastewater treatment facilities
Thursday, March 24, 2016 ∙ 8:00-11:30AM
Course Instructor: Tom Jenkins, PE – JenTech Inc.
Training Topics Include:
- Electric Costs, Baselines, and Benchmarks
- Energy Conservation Opportunities
- Aeration Systems Opportunities
- Pumping Systems Opportunities
- VFDs and Controls
- Payback, Financing Options
- Measurement & Verification
Who should attend?
Maintenance personnel, operators, regulators, contractors, energy efficiency specialists, plant managers, engineers and anyone with a basic understanding of common wastewater treatment processes and equipment, as well as an interest in learning more about energy management in wastewater treatment facilities.
Basic understanding of common wastewater treatment processes and equipment.
As a result of this course you will be able to:
- Identify the most likely energy conservation measures and those unlikely to be worth pursuing.
- Evaluate the cost effectiveness of potential energy conservation measures in pumping applications and aeration and blower applications.
- Prioritize projects for implementation.
- Find funding options for energy conservation improvements.
7025 Northland Drive N
Brooklyn Park, MN 55428
No-Cost Session at:
MPCA 79th Annual Wastewater Operations Conference
For questions about this training session, please contact AJ Van den Berghe, 612-624-4653, email@example.com
For MPCA Conference registration or questions, please contact Tracy Finch, 651-757-2103, firstname.lastname@example.org
To learn more about this project and how your facility can participate, contact AJ Van den Berghe, MnTAP Engineer and Certified Energy Manager, at 612-624-4653 or email@example.com. You can also complete our contact form and we’ll call you at your convenience.
- March 1st, 1:00pm-1:50pm
Minnesota Rural Water Association Technical Conference Session – Implementing Energy
Efficiency and Renewable Energy at Water & Wastewater Facilities;
Conference Registration here
- March 24, 8:00 am-11:30 am
MPCA Wastewater Operations Conference Training Session – Energy Efficiency in Small to
Medium Wastewater Treatment Facilities; Conference Registration here
- Date TBD - GreenStep Cities Follow-Up Session – Wastewater Treatment Benchmarking
Minnesota Rural Water Association Technical Conference Session – Implementing Energy Efficiency and Renewable Energy at Water & Wastewater Facilities; Conference Registration here
MPCA Wastewater Operations Conference Training Session – Energy Efficiency in Small to Medium Wastewater Treatment Facilities; Conference Registration here
- ENERGY STAR® Portfolio Manager® score – This is an energy benchmark for mechanical wastewater plants that compares your energy performance to plants nationally to identify operating cost reduction potential. This score accounts for differences in hydraulic and organic loads, climate and other factors and has been validated for plants larger than 0.6MGD (although we believe the model is likely to be useful for smaller plants also).
- Energy Assessments – MnTAP will conduct assessments at 10 mechanical wastewater plants and would consider assessments for aerated pond systems. These assessments:
- Can evaluate current operations to identify energy efficiency and cost saving opportunities as well as possible ways to streamline operations and address maintenance issues
- They can evaluate portions of planned expansions and plant modifications by working with your design engineers to look at capital investment vs. energy cost over the life of the plant to identify the most cost effective options.
- Deliver energy reduction solutions for voluntary implementation.
- Have no assessment fees and no regulatory burdens.
- Biogas Utilization Evaluations - If you produce biogas through anaerobic digestion, or are interested in evaluating biogas energy generation opportunities, MnTAP can facilitate:
- A no-cost screening evaluation with the US DOE Midwest CHP Technical Assistance Partnership (CHP TAP)*. The screening will indicate if electrical power generation and thermal recovery (i.e. combined heat and power) from biogas appears promising, or under what future conditions it might become promising.
- Follow on technical assistance, including engineering evaluation and/or feasibility study, through the US DOE Midwest CHP TAP to confirm cost effectiveness for promising CHP situations, and to characterize an appropriate biogas and CHP configuration.
- Information on State and Federal Financial Assistance – As appropriate to needs, MnTAP will facilitate connections to additional providers of financial assistance ranging from utility incentives to low-interest loans, to state vetted, energy performance contracts.
- MnTAP intern – MnTAP can provide interns to work on an energy conservation project of importance to 3 plants. Upper class, undergraduate students do feasibility analysis to help you select and justify the best options for process improvement, and with your approval can begin the process of implementing change.
*The Midwest CHP Technical Assistance Partnership is a DOE supported regional center promoting and assisting in developing the market for Combined Heat and Power (CHP) technologies.
Is your facility:
- making capital improvements - are you expanding or redesigning portions of your plant?
- willing to consider cost-effective changes to reduce total cost of plant operation?
- using anaerobic digestion or considering changing to anaerobic digestion?
- exploring the potential of utilizing biogas via combined heat and power (CHP) to generate electricity and offset natural gas purchases?
- willing to host a MnTAP site assessment or a summer intern to evaluate efficiency opportunities on energy-intensive processing equipment, procedures and operating schedules?
If your facility is planning or considering any of the above, MnTAP can help.
The first stage of the project will begin with outreach to a targeted group in September 2015. Additional opportunities for new facilities to participate will be available in 2016 and in 2017.
Anticipated project outcomes for the three-year project include:
- Engaging WWTP across Minnesota
- Training 50 operators on Energy Efficiency (E2) and onsite power generation
- Conducting 10 E2 assessments at sites that are more complex than simple lagoon systems
- Identifying a conservation opportunity of 2–5 million kWh per year
- Holding 10 regional discussions on WWTP E2 implementation planning
- Evaluating 5 combined heat and power (CHP) screenings
- Completing 1–2 detailed CHP assessments
- Engaging in 1–2 regional stakeholder discussions on CHP implementation opportunities.
December 8th, 2015 GreenStep Cities Workshop Webinar
Project Overview: Energy Efficiency and Renewable Energy Opportunities at Minnesota Wastewater Treatment Plants
January 13th, 2016 GreenStep Cities Workshop Follow-Up Session
Financing Energy Efficiency and Renewable Energy at Wastewater Treatment Plants
MnTAP assessed 10 sites in a previous project and has had a number of intern projects related to wastewater plant energy conservation. We found opportunities to reduce energy use by 5–30%.
- Kasson Wastewater Treatment Plant Case Study - Assessment recommendations to save $18,000
- 2015 MnTAP Source Newsletter (pages 4-5) - Why Benchmark energy use
- 2013 City of Hutchinson intern project - intern project that saved $45,000
- 2014 City of St. Cloud intern project - intern project that saved $27,000 and recommends changes to save $54,000 more
- NorthBranch-Best Practices - what this small plant did to be in the top 6% nationally in energy efficiency
- 2011 Intern Project at the City of Rogers (2011 EBR page 15) - Intern project that saves $15,000
- 2011-12 WWTP Project Summary (2012 EBR page 16)
- Energy Benchmarking Handout - coming soon
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