Presentation example, Arial, bold, 24 pt, white

Presentation example, Arial, bold, 24 pt, white

ADDENDUM TO THE 2015 TREATMENT SUBCOMMITTEE MCL SUPPORT DOCUMENT RECOMMENDATION ON PERFLUORINATED COMPOUND TREATMENT OPTIONS FOR DRINKING WATER NEW JERSEY DRINKING WATER QUALITY INSTITUTE TREATMENT SUBCOMMITTEE SEPTEMBER 22, 2016 NEW JERSEY DRINKING WATER QUALITY INSTITUTE TREATMENT SUBCOMMITTEE

Members Patricia Gardner Anthony Matarazzo Norman Nelson, PE Carol Storms NJDEP Support Lee Lippincott, PhD Gene Callahan Katrina Angarone 2

DWQI TREATMENT SUBCOMMITTEE Commissioner Bob Martin of the New Jersey Department of Environmental Protection requested that the DWQI develop recommended maximum contaminant levels (MCL) for three long-chain perfluorinated compounds (PFC): Perfluorononanoic acid (PFNA)

Perfluorooctanoic acid (PFOA) Perfluorooctanesulfonic acid (PFOS). 3 2015 RECOMMENDATION The Treatment Subcommittee found that the best available treatment for all three compounds was the same. Accordingly, in 2015, when the DWQI issued its recommended MCL for PFNA, the Treatment Subcommittee released one document to address

treatment for these three compounds, entitled: Recommendation on Perfluorinated Compound Treatment Options for Drinking Water 4 REVIEW OF NEW AVAILABLE TECHNICAL INFORMATION As the DWQI Subcommittees began to investigate PFOA, the Treatment subcommittee did the following to ensure that the 2015 document was still applicable, the Treatment Subcommittee: Reviewed the available new relevant literature

Water Research Foundations Web Reports #4322 and #4344 Reviewed the 2015 document to ensure that the identified treatment methods could achieve the draft health-based MCl. 5 ADDENDUM Purpose: To update and supplement the 2015 report. PFNA Treatment Clarification The 2014 WRF report referenced throughout the Treatment Subcommittee report included a table that described the assumed removal rates for PFNA with respect to anion

exchange and granular activated carbon (GAC) rather than observed removal rates. The referenced case studies for New Jersey American (Logan System Birch Creek) and Amsterdam demonstrated actual removal of PFNA using full6 scale GAC installations. ADDENDUM Treatment Design As noted in the document, some treatment methods are more effective for long-chain PFCs than for short-chain PFCs. Further information on the removal of various PFASs is included in the 2016 WRF document (Dickenson & Higgins, 2016). The Treatment Subcommittee recommends that

consideration should be given when designing the bench study evaluations if other PFASs are present in the source water, even if they are not currently being regulated. 7 ADDENCUM Anion Exchange In a 2015 WRF publication, Dudley et al. (2015) indicated that: Anion exchange demonstrated great promise for PFAS removal, provided that resins are regenerated in a manner that restores, at least periodically, the PFAS removal capacity of the resin. [a] possible alternative for PFAS removal could be a hybrid adsorption/anion exchange treatment approach, in which more strongly adsorbing PFASs are initially removed by

activated carbon and more weakly adsorbing PFASs subsequently by anion exchange. The WRF Project #4322 referenced was referred to as an ongoing project. This project has been concluded, and the results note that anion exchange, among other treatment methods, show promising results for the removal of these chemicals (Dickenson & Higgins, 2016). 8 ADDENDUM Advanced Oxidation: The statement the 2015 report regarding the ineffectiveness of conventional oxidation is further supported by recent WRF publications, which concludes

that these processes proved mostly ineffective and unable to oxidize PFASs because of the strength of the carbon-fluorine bond (Dickenson & Higgins, 2016 and Dudley et al., 2015). 9 ADDENDUM Membrane Filtration: Membrane filtration, specifically nanofiltration/reverse osmosis, was also evaluated by WRF and found to be effective (Dickenson & Higgins, 2016). 10

ADDENDUM Granular Activated Carbon: In the 2016 WRF publication, GAC is considered to be an effective method of treatment, as two out of three sites that tested for PFAS concentration observed removal, with empty bed contact time ranging from 10-13 minutes (Dickenson & Higgins, 2016). However, consideration must be given to the background matrix of the source water. WRF refers to some instances where PFASs measured at higher concentrations in the effluent than in the influent. According to the WRF publication, this is believed to be due to competitive effects with other sorbing species (perhaps longer chain PFASs and/or natural organic matter) leading to desorption (Dickenson & Higgins, 2016). Additionally, during rapid smallscale column tests, the effluent concentration for PFOS never reached more than 2% of influent concentration (Dickenson & Higgins, 2016).

11 CONCLUSIONS The Treatment Subcommittee concludes that it has been demonstrated that PFOA can be reliably and feasibly removed by carefully designed GAC treatment to below the recommended health-based MCL of 14 ng/L. 12

Recently Viewed Presentations

  • The Rule of Thirds - Jessamine County

    The Rule of Thirds - Jessamine County

    The paper is divided into thirds each way equally. The subject is now in the correct place. This photo is composted by the Rule of Thirds. Not the best use of the Rule of Thirds: That's better! Imagine the grid...
  • S Ridrovicí k Džejárovi

    S Ridrovicí k Džejárovi

    Hřebíkový tuning zadního kola ;-) SSSSSSSSSSSSSSS Tak co si dáte? Já si objednám pořádnej kus vepřovýho….zelenina mi už leze krkem Já toho moc nesním, tak si objednám jen něco malého Kujva, co to je??? Taková obrpalačinka. Chtěl jsem něco malého…tohle...
  • Problem & Solution Essay

    Problem & Solution Essay

    Introduction(1 paragraph of at least 3 sentences) Attention getter. State topic. State three character traits that will be proved further in the body paragraphs. Body (3 paragraphs each at least 5 sentences) ... Problem & Solution Essay Last modified by:
  • PowerPoint Presentation to Accompany Chapter 4 Hardware Visualizing

    PowerPoint Presentation to Accompany Chapter 4 Hardware Visualizing

    The USB port is a standard port type used to connect many kinds of devices. An advantage of USB devices is that they are hot-swappable. That means they can be plugged in and unplugged without turning off the computer. A...
  • Early Brain and Child Development: The Public Health

    Early Brain and Child Development: The Public Health

    Early Brain and Child Development:The Public Health Perspective August 2018. Name of Presenter. Material developed by the American Academy of Pediatrics. This is the supplemental module for public health professionals in the Early Brain and Child Development training and education...
  • Acciones Y Medidas Para La Implementacion De La Nimf Nº 15 En ...

    Acciones Y Medidas Para La Implementacion De La Nimf Nº 15 En ...

    Etapas de implementación Diagnóstico de los Recursos Técnicos e Industriales del país. Talleres y seminarios a nivel nacional de difusión de la NIMF N° 15. Elaboración de proyectos de norma de importación y exportación de embalajes de madera. Etapas de...
  • Industry Knowledge Structures and Strategic Entrepreneurship

    Industry Knowledge Structures and Strategic Entrepreneurship

    Initially, studied established companies (especially MNCs), then paid attention to new ventures. Examined how internationalization drives MNCs' new venture creation. Studied how new ventures created by MNCs compete with privately, owned independent ventures. Explored how internationalization drives corporate-sponsored social venture...
  • s3.amazonaws.com

    s3.amazonaws.com

    short words/greeting to start the speech off. (e.g. 'Mr. Speaker' or 'Mr. Chair, honourable judges, ladies and gentlemen' Definition and Model. Define terms within the . spirit of the motion. Model: Who, What, When, Where