International Emerging Technology Symposium May 10, 2016 Chicago, IL USA Lyles School of Civil Engineering Purdue University, West Lafayette Premise Plumbing Decontamination: Research and Technology Needs Andrew J. Whelton, Ph.D. Karen S. Casteloes Jake Hawes
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The Whelton Group
International Emerging Technology SymposiumMay 10, 2016 Chicago, IL USA
Lyles School of Civil Engineering
Purdue University, West Lafayette
Premise Plumbing Decontamination:
Research and Technology Needs
Andrew J. Whelton, Ph.D.Karen S. CasteloesJake Hawes
The Whelton GroupAcknowledgements
Students: Emily Conkling, Kyla
Prendergast, Yufei Zhang, Devin
Kelly, Jesse Li, Xiangning Huang,
Maryam Salehi
Special thanks to …Maya Nye, PCACS
WVTAP colleagues
Dr. Randi Brazeau, Metro State Univ.
John Hall, EPA ORD
Whirlpool Corporation
Funded by:
CBET # 1424627
2
Project #4579
The Whelton Group
Charleston, WV
Glendive, MT
Toledo, OH St. Bernard, LA
Longeueil, CN
Flint, MI
Washington, DC
Large scale
incidents
since 2014
and many
more…
The Whelton Group
4
Contaminants
Organic chemicals
Inorganic chemicals
Radionuclides
Microorganisms
Oil spills
Coal flotation liquid
Algal toxins
The Whelton Group
5
Goal: Gain a better understanding with regard to the state-of-the-knowledge for rapid and safe premise plumbing decontamination
1. Describe common premise plumbing decontamination approaches for -- chemical contamination
2. Identify premise plumbing components that require additional attention to clean
3. Explain health risk and waste management challenges specific to plumbing decontamination
4. Detail opportunities for research and technology development
Objectives:
The Whelton Group
Residential Systems are ComplexObjects: Fixtures, pipes, tanks, fittings, valves, gaskets
Materials: Sediment, corrosion scale, biofilm, plastics vs. metals
Hot vs. Cold
Water Pipes
Water
Heaters
Solids
Corrosion
Products
Fixtures and
Aerators
Metals and Plastics
Whole House Filter
Water
Softener
The Whelton GroupMaterials: Deliberate and Undeliberate
Material Plastics Other Materials
PipePVC, HDPE, PEX,
PP, cPVC
Copper,
Galvanized Iron,
Concrete, Lead,
Lead-lined Steel,
Black Steel, Brass
Coatings EP, PU, PEUU -
Faucets,
Valves,
& Fittings
Synthetic rubber
(o-rings), PVC
Lead, Stainless Steel,
Brass, Copper,
Aluminum
Gaskets
EPDM [S,P], BR,
NBR, SBR, Viton,
Neoprene
-
Water
Heater
Polysulfone (PSU)
dip tubes
Steel, glass,
ceramic interior linings,
Mg or Al sacrificial
anode rod
Diameter,
inch
Required
Flow, GPM
6 308
4 137
2 34
1 ½ 19
1 9
3/4 5
5/8 3
Flow Rate Needed to
Remove Particles from
Pipes
3 fps per to achieve 2.5-
to 3.0-log removal of
sand particles for 4 to
16 inch diam. pipes
Microbial Control Strategies
for Main Breaks and
Depressurization, WaterRF
Project No. 4307. 2014.
?
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Review of Residential Premise Plumbing
System Decontamination Methods
Casteloes KS, Brazeau RH, Whelton AJ. 2015. ES:RSC DOI: 10.1039/c5ew00118h