1 / 16

Partnering with POTWs to Use P2 to Achieve Industrial Phosphorus Reduction

Partnering with POTWs to Use P2 to Achieve Industrial Phosphorus Reduction. Cindy McComas University of Minnesota—MnTAP 612-624-4678 mccom003@umn.edu. High flow Non point 90 % Point source 10 %. Low flow 36 % 64 %. Point vs Non Point Phosphorus Sources--Minnesota River Basin.

ccerrone
Download Presentation

Partnering with POTWs to Use P2 to Achieve Industrial Phosphorus Reduction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Partnering with POTWs to Use P2 to Achieve Industrial Phosphorus Reduction Cindy McComas University of Minnesota—MnTAP 612-624-4678 mccom003@umn.edu

  2. High flow Non point 90 % Point source 10 % Low flow 36 % 64 % Point vs Non Point Phosphorus Sources--Minnesota River Basin

  3. Challenges Facing WWTFs • Reduce phosphorus and other pollutant loading • Prepare Phosphorus Management Plans • Meet 1 mg/L limit • Aging systems

  4. Three Strategies for Phosphorus Reduction • Industrial/commercial/institutional • Residential education • Removal at POTW

  5. Industrial Assistance Approach • Contact with POTWs in three basins: Upper and Lower Mississippi Rivers, Minnesota River • Identify industrial phosphorus contributors • Provide phosphorus reduction assistance to industrial contributors (site visits, interns, teams)

  6. MnTAP, University of Minnesota • Site visits • Student interns • Facilitated industry teams • Resources for mercury elimination

  7. Industrial Sources of Phosphorus • Metal conversion coatings (prior to painting) • Food processing and food waste • Cleaning and sanitizing operations

  8. Electrolux, St. Cloud • Manufactures freezers • Switched two cleaning/conversion coating lines to no phosphorus • Reduced phosphorus by 90% from 42 lb/day to below 5 lb/day

  9. Bongards Creameries, Norwood • Butter, cheese and whey powder • Changes: • clean in place systems • dry cleanup prior to wet cleanup • installed level sensors on tanks • Reduced phosphorus by 60% from 150 lb/day to 60 lb/day

  10. Schwan Food Company, Marshall • Frozen foods • Switched to low/ no P cleaners and sanitizers • Reduced P from 36 lb/day to 13 lb/day; 8,400 lb/yr • 30% reduction at the same time as a 31% increase in flow

  11. Industrial Loading Impact on POTW • City of Richmond and meat locker • Wastewater treatment plant went from influent of 11.25 ppm (9.4 lb/day) to 5 ppm (4.2 lb/day) • Meat locker reduced 1,092 lb phosphorus/yr by keeping material off the floor and moving to no-phosphorus cleaners

  12. Activity Results • Contacts: 200 POTWs 131 industrial facilities • Site visits: 62 POTWs 113 industries • Intern projects: 7

  13. Outcome Results • Reduced • Phosphorus 65,950 lb • BOD/TSS 7.5 million lb • Water 104 million gal • Cost savings to businesses • $3.2 million

  14. Lessons Learned • Partnering with POTWs to reach industries • P2 is an effective tool to reduce P and other pollutants to POTWs • Regulatory requirements are motivators (PMP and P limits) • Industries save money due to more efficient use of raw materials • POTWs cut costs for chemical use

  15. Next Steps—Community Wide Reduction Effort • Partner with cities • Inventory businesses • Educate business and residential contributors • Provide assistance to identify phosphorus reduction options • Measure reductions

  16. Project Support • U.S. EPA Region 5 • The McKnight Foundation • Minnesota Office of Environmental Assistance • Minnesota Pollution Control Agency

More Related