DEQ-CFW_00059070

From: TerausEnvironmental [info0tersusenxcom]
Sent: ]/I0/20167:322]PN1
To: Zimmerman, Jay [/o=6ohangeL bs/ou=Exc angeAdministrativ Group
(FYD|BOHFI]3PDLT)/cn=Kecipients/cn=653d8I453bd54ebfQ587%Ia7b31d6odf-sjzimmerman]
Subject: Emerging Contaminants: PFASUpdate
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Web Version F'references

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Ex situ treatment of Aqueous Film -Forming Foam
impacted groundwater
Perfluoroalkyl and Polyfluoroalkyl Substances 'PFASsj a€:, common in Aqueous Film Forming
oanis (AFFF) used for fi€efighting. PFASs are widely distributed across the higher troPhic levels
and are `ound in air. soil and groundwater at sites across the U.S. (11:::PA 505-F-14-0.01, March,
2014j. 'Fhe toxicitv, mobility and bioaccum:dafion potential of PFASF pose potemtial adverse effects
for the envionn ent and uMan health, 1'hey are pesisten` :n the environment, among the
n
strongest oraanic compounds and thus considered non -degradable
>naotitionem have, difficulty rernediating these compounds at a reasonable, cost because P`­Ass
:end to be hiaNy soluble, do not Favorably partition into the vapor phase, and do not adsorb we" to
gm. —War activated carbon To date, GAI" has been the only technically feasible, rnethod to
S
:PF treat elA% rnedoa,
foHowed polishing is an innovative process for V­ treatment "of PFAS
by E
contaminants in AFFF-aqueous media. FoilunateIy, the costs for PerfluorAd Ren,Bind treatment
Irain are very favorable compared to activated carbon or on exchange systen'ts. And, unlike
.activated carbon, V:is approach works we;1 for the rennoval of short -chair: R ASs.
In the pretreatment phase, PFASs an-, precipitated by metenrig the liq;,.:d PerfluorAd active
compound :nto a stirring tank. 'Fhe amount of PerfluorAd can be a-djusted to varying concentrations
'I'he precipitation products are separated ftom the water as micro -flocks by simple; pmoesse's sucl
as sedimentation and filtration. The Drecipitants can be concentrated to a livery high deC; iae, which
-,r
alkows for very economical diFpoFa': as compared to GAC. Post -treatment of the remaining residual
contaminants is perfomied by a downstream ReE.'sind filter. iDue to the significant reduction in fie
water in the Perfl::orAd sage (up, to ;}OW, the PFAS oontamiriant load
achina the absorbent filter(s) is lowered, which leads to a significant extension of the absorber's
iifetime, again significantly lowering operating costs
As the technology is new to Nortir, America, Temus Environmental is seeking pilot de—onsk'ation
e_ c
sites. Pease contact a
i Z-016 Thought Leader Webinar
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DEQ-CFW-00059071

DEQ-CFW 00059072