|
li
<br /> . tXi�.�y 3^!;?c"";•,'o� "e,,x°'9' '= '^'�`. ,� wiAc°7Y�f, y'e-:a:cv�°°:: t�w�yq P%7^fs;;,':";?ny':'.":i`?';.wct'X'r£!!'.'.":g�.�"•,.;7.-.r..... 1
<br /> %;�.. Y��.^P.' .C i" ��. .:./r, rK ..A ,ire{j'•:..< .L .W:\. .,•6...::
<br /> - �y.f-.. Y".. >ni. �•• lY+.. W v:i•.:ti- . r.,yy,Yi•::;... •f� .fy:'%
<br /> .....,,.,.... ....lr,, tir'+Y�v��".LJ,.�d�kea.��.. ..,Ss r��-..s-..Gz°�si:�a,e,�.+.. !:a'sz�•.�f��..., :,`Zyi..., ..,........
<br /> MASSACHUSETTS
<br /> MILITARY RESERVATION
<br /> May 1997
<br /> Groundwater Treatment Te yes
<br /> A fact sheet providing information about the groundwater treatment technologies under consideration at the MMR.
<br /> u os�: of this fact...:sheet.}s:tt3escrie: the: extraction, treatment, and reinjection (ETR)
<br /> The...
<br /> -.Ppr rp....
<br /> . systems. A typical ETR system has three basic
<br /> ..:technoto.g��s_ .that -may,
<br /> be.. used. to; pl crrr-:up:::thy.::.
<br /> Quridatr. l ums emanating.from:the.. Iassachu�::. Components:
<br /> :setts M1Iitary Reservation(M :.::.:......::...: ....:.:.::. I. contaminated groundwater is pumped out of the
<br /> e hnolo les ma be -sed t--clean aquifer through a series of extraction wells,
<br /> ;A
<br /> combination of t c g
<br /> u.: th -Ad entif ed p ume at the II�III�IR...:,.,Tho various This requires locating extraction wells in differ-
<br /> p
<br /> techriolo les.or combinations of telanologies_under ent locations and at different depths in order to
<br /> g.
<br /> consideration for a given plume are: ailed'I....... capture the plume.
<br /> response alternatives. Project' managers'"':from_
<br /> 2. The extracted water is then treated at the sur-
<br /> A*r Force Center for Environmental'-..Excellence face. In the case of the MMR, the treatment
<br /> (AF EE}, -the U-S. Environmental �Pr6tcction- •
<br /> system that would be used is activated carbon.
<br /> Agency .(USEPA}, and the Massachusetts De'part Carbon has the abilityto adsorb, or ab onto,
<br /> ment of Environmental' Protection -,(DEP),. will.'be passing organic molecules and hold them in
<br /> ,evaluatin these alternatives to recommend the most: p g g
<br /> g pores within the carbon granule. when con-
<br /> :appropriate cleanup solutions fflr-each plurrie --::_the_ throu h a
<br /> tam inated groundwater is pumped g
<br /> alternatives currently under consideration:-for the filter of carbon granules, most of the organic
<br /> chemical S ill-10 l o0 fume-are described-•in
<br /> p (CS-1 contaminants become trapped on the surface of
<br /> .:the accompanying fact sheet,-Introduction:tp;C ` d the carbon. Eventuallythe carbon fills u and
<br /> P
<br /> }'fume Response Alternatives...'-
<br /> ...: .- the carbon must be replaced. Used carbon is
<br /> .Public involvement during the decision-m aking sent off Cape to be recycled.
<br /> period is critical to selecting an alternative:that not'
<br /> -.. .' . . ..• . The activated carbon System is housed in a
<br /> •only cleans up the plume and ..tneets--regulatory used to treat groundwater
<br /> treatment plant ant and i s s g
<br /> requirements, but also is acceptable-to the affected, wells. The groundwater
<br /> communiti t sheet- alon•' with..an-'accom-� from several extraction
<br /> es. This fact g .. - is um ed to the treatment lant from the
<br /> pan in fact'-sheet describin the CSS 1 0'•-.plume--in• pumped p
<br /> y g g extraction well. Safety precautions, such as leak
<br /> general) will provide background information tv.in terns ensure that an
<br /> an effort••to het l make informed decisions..-'
<br /> detection monitoring systems, y
<br /> p pDP a leaks are detected immediately.
<br /> V�vrds that appear in italics are def ned i'- the•glos--.
<br /> sii 'at the end of this fact sheet. Activated carbon is one way to treat the
<br /> s
<br /> groundwater after it has been extracted. Other
<br /> Extraction, Treatment, and treatment technologies may be considered.
<br /> Reinjection 3. After being tested, the treated water is pumped
<br /> back into the aquifer through a series of rein-
<br /> Description of the Technology jection wells. Reinjection wells are used to
<br /> P 9Y
<br /> reduce the impact of the extraction wells on the
<br /> The most common method of treating groundwater groundwater hydrology, to help control plume
<br /> is to extract the water, treat it at the surface, and migration, and to return treated water to the
<br /> g
<br /> return the treated water to the aquifer. This process aquifer.-..
<br /> also is known as "pump and treat" technology.
<br /> There are a variety of methods to return treated
<br /> water to an aquifer, one of which is reinjection
<br /> wells. Systems using reinjection wells are known as
<br />
|