george heufelder, m.s.,r.s. barnstable county … · some cec “lock into” receptors and hence...
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This project was funded by the Massachusetts Department of Environmental Protection with additional funds from the United States Environmental Protection Agency under a Section 319 competitive grant. The contents of this report do not necessarily reflect the views or policies of the departments mentioned nor does the mention of any product trade name constitute an endorsement.
George Heufelder, M.S.,R.S.Barnstable County Department of Health and EnvironmentBarnstable, [email protected]
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What are Contaminants of Emerging Concern?
In general, they include pharmaceuticals, personal care products, natural hormones, by-products of cleaning, and other compounds in water and wastewater than may exhibit a physiological response
(particularly in lower organisms) at very low levels.
ng/L = one drop of liquid in ten miles of railroad tankers.
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What are Contaminants of Emerging Concern?
AntibioticsHormones (synthetic and natural)Metabolites (cotinine)Psychoactive drugsLipid regulatorsPain relieversFragrancesChemotherapy drugsFire retardantsCleaning productsothers
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Nature conserves valuable work. Many of the metabolic and regulatory pathways that have evolved are conserved between classes of organisms.
This means that many of the drugs we invent to regulate our metabolic systems can also effect “lower” organisms and sometimes visa versa.
YOU ARE
HERE
Earliest indication of
the presence of
estrogen and
estrogen receptors
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Because it turns out that you actually can fool Mother Nature.
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Many hormones are regulated
by feedback loops where the
concentration of the hormone
limits its further production.
Some CEC “lock into” receptors
and hence may sent the wrong
signal to the body, either
shutting off or ramping up the
production of the hormone.
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Bottom line?
There is hope
HOPE
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AttenuationAttenuation
AttenuationAttenuation
Attenuation
Removal
ma
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Attenuation Removal
• Adsorption• Conjugation (with
possibility of deconjugation)
• Chemical breakdown• Biodegradation
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No. 53 from Soil Microbiology and Biochemistry Slide Set. 1976 J.P. Martin, et al., eds. SSSA, Madison WI
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DRIP DISPERSAL SHALLOW DRAINFIELD
3 year study
2010-2012
3 year study
2011-2013
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Drip EmittersDrip Emitters
Adsorption
Transformation
Complexation
Dilution
Bacterial Utilization
Diverse Biological Community Plant uptake and
phytoremediation
Drip Dispersal Systems
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12 “
Fabric materialCore material
1” PVC pipeDistributionlateral
Orifice shield
Shallow Drainfield Systems
Cross section
GeoMatTM
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12 “
12” diameterPVC pipe cut lengthwise1” PVC pipe
Distributionlateral
Support
Shallow Drainfield Systems(alternative installation)
Cross section
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Bacteria/gram of soil
7-8 million
1- 2 million
400 – 500 thousand
~ 10 thousand
one thousand
hundreds
Billions
Bacteria (and other microbes) – the real workhorses of the terrestrial ecosystems
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Data suggest that nitrifying
organisms may use certain CEC
as a carbon source.
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Selected good news and bad news
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1
10
100
1000
10000
100000
Influent(range)
STE(range)
Percolate(p=.05)
Influent(range)
STE(range)
Percolate(p=.05)
Sulf
amet
ho
xazo
le (
ng
/L)
DRIP DISPERSAL SHALLOW DRAINFIELD
98% reduction
97% reduction
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1
10
100
1000
10000
100000
Influent(range)
STE(range)
Percolate(p=.05)
Influent(range)
STE(range)
Percolate(p=.05)
Sulf
amet
ho
xazo
le (
ng
/L)
DRIP DISPERSAL SHALLOW DRAINFIELD
98% reduction
97% reduction
Removal in conventional activated sludge treatment plant 59% (37 – 80%)
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1
10
100
1000
10000
Influent(range)
STE(range)
Percolate(p=.05)
Influent(range)
STE(range)
Percolate(p=.05)
Trim
eth
op
rim
(n
g/L
)
DRIP DISPERSAL SHALLOW DRAINFIELD
99% reduction
99+% reduction
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1
10
100
1000
10000
Influent(range)
STE(range)
Percolate(p=.05)
Influent(range)
STE(range)
Percolate(p=.05)
Trim
eth
op
rim
(n
g/L
)
DRIP DISPERSAL SHALLOW DRAINFIELD
99% reduction
99+% reduction
Removal in conventional activated sludge treatment plant 14% (0 - 40%)
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0.1
1
10
100
1000
Influent(range)
STE(range)
Percolate(p=.05)
Influent(range)
STE(range)
Percolate(p=.05)
Dic
lofe
nac
(ng
/L)
DRIP DISPERSAL SHALLOW DRAINFIELD
89% reduction
99% reduction
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0.1
1
10
100
1000
Influent(range)
STE(range)
Percolate(p=.05)
Influent(range)
STE(range)
Percolate(p=.05)
Dic
lofe
nac
(ng
/L)
DRIP DISPERSAL SHALLOW DRAINFIELD
89% reduction
99% reduction
Removal in conventional activated sludge treatment plant 31% (13 - 60%)
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1
10
100
1000
Influent(range)
STE(range)
Percolate(p=.05)
Influent(range)
STE(range)
Percolate(p=.05)
Ato
rvas
tati
n (
ng
/L)
DRIP DISPERSAL SHALLOW DRAINFIELD
92% reduction
91% reduction
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Compound Drip
Shallow
Drainfield
Conventional
activated sludge
treatment
Acetominophen 99.99% 99.82% > 90% - 99.9% (b)
Atenolol 93.62% 99.03% 5.5% ( 2-20%)(a)
Atorvastatin 92.60% 91.18% 85-95% (d)
Caffeine 99.97% 99.93% 94.9% (c )
Ciprofloxacin 97.96% 98.17% 72% (59-85%)(a)
DEET 98.45% 98.24% 69% (48-90%) (e )
Diclofenac 89.16% 99.37% 31% (13-60%)(a)
Furosemide 97.60% 98.40% 59.8% (c )
Ibuprofen 99.94% 99.93% 74%(44-100%)(a)
Miconazole 0.00% 0.00%
Naproxen 99.50% 96.80% 75% (59-92%)(a)
Propranolol 71.20% 96.89% 96% (a)
Sulfamethoxazole 97.90% 96.50% 59% (37-80%)(a)
TCEP 0.00% 0.00%
Trimethoprim 99.20% 99.80% 14% (0 - 40%)(a)
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Neither shallow soils systems or conventional treatment systems appear to be effective for the removal of:
• Fire retardants (TCEP)• Anti-fungal medications
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The Effect of Three Soil Types the Removal of Selected Micro-Constituents and Contaminants of Emerging Concern
This project was funded by the Massachusetts Department of Environmental Protection with additional funds from the United States Environmental Protection Agency under a Section 319 competitive grant. The contents of this report do not necessarily reflect the views or policies of the departments mentioned nor does the mention of any product trade name constitute an endorsement.
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5’
42”
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TOP VIEW
SIDE VIEW SIDE VIEWCut-away
Distributionlateral
SandSand 5% fines Or Sand 10% fines
Washed Peastone
Drain/samplelocation
Discharge orifice and shield
Distributionlateral
Schemata of 42-in diameter, 48” height soil columns
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Sam
ple
Co
llect
ion
Lo
cati
on
s
Loading calibration orifice
Sep
tic
Tan
k Ef
flu
ent
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Three soil types and four replicates of each soil type
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1
10
100
1000
10000
100000
Influent
(range)
STE
(range)
Sand
(p=.05)
Sand w/ 5% fines
(p=.05)
Sand w/ 10%
fines
(p=.05)
Su
lfam
eth
oxazo
le (
ng/L
)
SOIL COLUMNS
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The general pattern of higher attenuation in soils containing 5%-10% fine material was found for acetaminophen, atenolol, atorvastatin, caffeine, DEET, diclofenac, ibuprofen, naproxen, sulfamethoxazole, and trimethoprim.
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No significant difference with soil type was observed with the compounds • Furosemide• Propranolol• Miconazole• TCEP
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Chance favors the prepared mind
Louis Pasteur
Chance favors the prepared bacteria
Susan Dracut Monâs
Is there any hope for eliminating TCEP and similar compounds?
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Biochemistry, Genetics and Molecular Biology » "Environmental Biotechnology - New Approaches and Prospective Applications", book edited by Marian Petre, ISBN 978-953-51-0972-3, Published: February 7, 2013 under CC BY 3.0 license
Chapter 5
Microbial Degradation of Persistent Organophosphorus Flame RetardantsBy Shouji Takahashi, Katsumasa Abe and Yoshio Kera DOI: 10.5772/53749
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• Nature of the compound
• Oxygen availability
• Bacteria and other fauna
diversity in the receiving
environment
• Retention time during treatment
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Take home messages
• Many pharmaceutical and personal care products, contain compounds that can disrupt the normal functioning of hormones in humans and wildlife.
• Although a major route for CEC entrance into the environment is wastewater disposal, the onsite septic system presents opportunity for significant treatment.
• Shallow-placed soil absorption systems remove > 90% of many CECs found in household wastewater.
• A more complete understanding of the principles of CEC removal in soils may offer opportunities to design optimization.
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