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R8PA 2

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R8PA 2

  1. 1. The Science of Amalgam Separators AL Dubé President Toppen Solutions, LLC 69 RoyAvenue Holliston, MA 01746 508-397-9725 ALDube@ToppenSolutions.com
  2. 2. Amalgam Separator Standards International Standards Organization 11143 American National Standards Institute / American Dental Association 108-2009 EPA Proposed Effluent Limitations Guidelines and Standards for the Dental Category (ELGSDC)
  3. 3. ISO 11143 Solids Standard Based on weight Requires certified particle distribution size Must test 6 times, 3 full / 3 empty Efficiency based on the lower of the two test sets 95% removal is required to be certified Types: Type 1 Centrifugal, Type 2 Sedimentation, Type 3 Filtration, Type 4 any combination of 1,2 and 3
  4. 4. ANSI / ADA (108 / 2009) Start with ISO 11143 Add a few wrinkles More rinse water Loosening in the status of the systems
  5. 5. Proposed ELGSDC 99% ISO, 2008 Standard Receive all waste containing amalgam (Cuspidors Sinks?) Inspected by facility once per month to verify functionality (should change) not bypassing. Grandfather clause 10 years (should change)
  6. 6. Certification Testing National Science Foundation (NSF) NSF currently performing most if not all ISO certifications in the US.
  7. 7. Amalgam Separators What is an Amalgam Separator? Solids Collectors What do they do? Collect all the solids from the evacuation system in a dental office How do they do it? Three separation technologies
  8. 8. Manufacturers What is the manufacturers #1 goal? Design to beat the standard. Manufactures specifications? Capacity? 6 months, 1 year, 2 years, 3 years? It’s all marketing
  9. 9. Manufactures Air Techniques ApaVia Avprox DRNA M.A.R.S. MedenteX Metasys R&D Services Rebec SolmeteX The Simple Anterior Quest
  10. 10. Separation Technology Centrifugal: Will not find in the US at this time Sedimentation: Vast majority in the US Filtration: Two Combination: No manufacture will admit to it.
  11. 11. Sedimentation Air Techniques RebecMedenteX
  12. 12. Sedimentation M.A.R.S. Metasys SolmeteX
  13. 13. Sedimentation DRNA R&D Services ApaVia
  14. 14. Filtration AvproXThe Simple One
  15. 15. What do Amalgam Separators do? Pollution Prevention Device Separate Solids and Liquids Capture and Collect S0lids Remove solids to greater than 99% Efficiency Significantly reduce mercury discharge from dental offices
  16. 16. What “Don’t” Amalgam Separators Do? Capture specifically mercury Capture dissolved mercury Meet discharge limits, Unless you don’t have one. Cause major issues for the dental practice Create a major expense for the dental practice
  17. 17. How They Work Air From Chairs Air Bypass Water Decant Water Air Amalgam Floaters
  18. 18. Clear vs Black Box Clear vs Black Box
  19. 19. Clear Can inspect visually to verify functionality and solids collection volume Can easily understand how to maintain the system Allows for ELGSDC inspection requirement
  20. 20. Black Box Can only see a system is installed No knowledge of functionality Could be in bypass ELGSDC inspection requirement? Does a window count?
  21. 21. Amalgam Separator Installations Centrally located vs Chair-Side Central: Near or next to the vacuum pump, last 6 months - 2 years Chair-side: Next to the chair in the operatory, “filters”, last about a month.
  22. 22. Designed for # of Chairs 1 Chair 1-6 Chairs 1-10 Chairs 10-20 Chairs Large Clinics or school
  23. 23. Separator Costs Manufacture dependent / Size Matters $150 per Chair for Chair-side units $300 - $1200 covers 90% of the market Annual Operational costs $300 - $600 Expect the costs to reduce when and if EPA Dental Rule is applied.
  24. 24. Potential Issues Filter systems plug fast and need frequent changes because vacuum is pulled through the filter Central systems can plug and bypass. This is not restricted to certain manufactures
  25. 25. Inspections Bring Flashlight for clear systems No flashlight necessary if Black Box Chair-sides systems in the treatment room Central systems will be located near the vacuum pump, usually a utility closet or basement ELGSDC: How can you inspect a Black Box?
  26. 26. Inspection Questions to Ask How many vacuum users in the practice? Where is the amalgam separator located, chair or central? How many users is the separator rated for? When was the last time the collection container was disposed of? What evacuation line cleaner are you using?
  27. 27. Waste Disposal Most separator companies have disposal options through pre-paid labels to recycling centers or staging centers for disposal Several mercury refining companies in the US one in Europe Proper Disposal should not be an issue
  28. 28. Dissolved Mercury Amalgam Separator are not designed to catch dissolved mercury One company makes the claim by using carbon however limited amount of contact with carbon Polishing system possible however does not completely remove all mercury Amalgam separators should get mercury levels to low ppb range
  29. 29. Tank System Anteriot Quest Central location never needs changing
  30. 30. Tank? Tank systems collect all waste from dental vacuum Tank contents are pumped out and collected for transport approximately 60 day schedule Brought to proper facility for disposal Solid waste is refined Not available everywhere. Not ISO or ANSI / ADA 108 / 2009 approved Does it need to be? Meets ELGSDC amalgam definition?
  31. 31. Line Cleaners Many line cleaners with varying pH Some have oxidizers Chemical Enzymes Micro Biological
  32. 32. Proposed ELGSDC pH 6 - 8 Non-bleach / Non- chlorine (Expect a change) Weekly Cleaning (Should be daily for standard cleaners once to twice a week for micro- biologicals)
  33. 33. Best Management Practice Collection of scrap amalgam contact and non-contact Collect waste in chair-side traps Collect vacuum pump filters Properly dispose of collection containers
  34. 34. ELGSDC BMP’s Similar to ADA’s BMP’s BMP’s would be required in some capacity. May be the Standard under Dental Industrial Users (DIU)
  35. 35. ELGSDC Status Public Comment ended Feb 20, 2015 Should be working on replies to comments An NGO spoke with EPA HQ which stated “EPA will publish its final amalgam rule in June 2016. This is unconfirmed however from a reliable source, don’t holding my breath No official word and its anyones guess if it happens
  36. 36. Dental Vacuum Flow Vacuum is negative No positive pressure Pulls, not gravity Flow only when High Speed suction is open High speed is sporadic Vacuum lines must be cleaned regularly
  37. 37. Dry vs Wet Vacuum Pumps Dry Vacuum Wet Vacuum Discharges an extra 360 - 520 gpd VS
  38. 38. Any Water Restrictions? Tap water is used to operate wet vacuum Water usage is becoming an issue for states specifically California What is the water use of wet ring pumps? Recycle about 1/4 gpm clean tap water Some have recyclers which cuts water use to 10%, not as frequent
  39. 39. Wet Ring Vacuum 1 hp 360 gpd 90,000 gpy Dual Vac 720 gpd 180,000 gpy
  40. 40. Wet Ring Vacuum 2 hp pump 520 gpd 130,00 gpy
  41. 41. Dry Vacuum
  42. 42. Dry Vacuum Advantage Uses no water for operation More expensive however savings from water usage could pay for the pump (San Fran 14 month payback) Can be financed for no upfront costs, virtually free No delusion effect More power efficient
  43. 43. Separator Work No questions on the ability to reduce mercury for influent or effluent
  44. 44. Questions? THANK YOU