COLLEGE OF ENGINEERING Chemical, Biological ...
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COLLEGE OF ENGINEERING Chemical, Biological & Environmental Engineering 0 5 10 15 20 Kelley Dissolved Kelley Total Fairbanks Dissolved Fairbanks Total Johnson Dissolved Johnson Total Milli-Q Copper (ppb) Influent Effluent 30% removal 0 50 100 150 200 250 300 Kelley Dissolved Kelley Total Fairbanks Dissolved Fairbanks Total Johnson Dissolved Johnson Total Milli-Q Zinc (ppb) Influent Effluent 60% removal Comparative Analysis of CONTECH StormFilters on OSU Campus Sam Albert, Maceo Gutierrez-Higgins, Jessalyn Imdieke* Conclusions & Observations • Initial results show that filters are not consistently meeting desired TSS removal specifications • Filter location/use may affect filter performance more than age • Fairbanks and Johnson locations are difficult to sample due to submerged outlet pipe during nominal flow conditions • Fairbanks location appears to be plugged, there is sludge buildup and bypass during storms smaller than design storm • Kelley location operating below design flow rate of 15 gpm Recommendations • Clean, maintain, and replace filter cartridges as needed • Test filters throughout the Oregon wet season Future work • Improve collection technique to reduce sludge disruption in outlet pipe or invest in automated sampler • Determine method to estimate flow rates at the Johnson and Fairbanks locations • Troubleshoot nitrates and total phosphates tests • Determine if Fairbanks location is performing adequately during peak wet season Kelley, 2005/06 Fairbanks, 2013 Johnson, 2016 CONTECH Background CONTECH StormFilters are located around campus to remove contaminates from storm water. They use a ZPG ™ Media blend of zeolite, perlite, and granular activated carbon to remove total suspended solids, and to a lesser extent some soluble metals and organics. We are testing three filter locations of various ages on campus: Kelley Engineering Center, Fairbanks Hall, and Johnson Hall. To our knowledge the filters have not undergone maintenance since installation. Suggested maintenance includes removing sludge from vault, replacing cartridges yearly or as needed, and performing monthly inspections during the wet-season. Our goal is to determine if OSU-installed CONTECH StormFilters meet local stormwater regulatory requirements as the system ages, and to propose any necessary mitigation. Acknowledgments Testing Methods Technical Assessment Protocol Ecology (TAPE) Testing Requirements* Influent Effluent goal Total suspended solids (TSS) < 100 ppm > 100 ppm < 20 ppm 80% removal Dissolved Copper 5 - 20 ppb 30% removal Dissolved Zinc 20 - 300 ppb 60% removal Total Phosphorous 0.1 - 0.5 ppm 50% removal EPA Industrial Stormwater Benchmark Nitrates - < 0.68 ppm Total Suspended Solids (TSS) SM 2450D Dissolved Metals (Zinc and Copper) SM 3030 E-2 Total Metals (Zinc and Copper) ICP-OES Nitrates SM 4500-NO3 B Total Phosphorus (TP) SM 4500-P B. 2 SM 4500-P E Sample W. M. Keck Collaboratory for Plasma Spectrometry http://www.lpdlabservices.co.uk/ Efficiency goals Preliminary Results Total Suspended Solids Dissolved and Total Metals Storm Information Figure 1. Schematic of a CONTECH StormFilter. Water enters under the filter hood, passes through the filter media for purification, and exits through the under-drain manifold. Design flow rate for an 18 inch tall cartridge is 7.5 gpm/filter. Figure 3. ICP-OES analysis for dissolved and total metals for A) copper and B) zinc in the influent and effluent for the April-11 th , April 25 th , and April 27 th storms. Error bars represent the standard deviation of N=3 storm samples for Kelley and N=2 storm samples for Fairbanks and Johnson Hall. Milli-Q water was processed as a control after passing through a 0.45 μm filter used for all samples, using the total metals digestion protocol. Technical Assistance • Nathan Patterson, OSU Capital Planning and Development • Dr. Tyler Radniecki, CBEE • Dr. Meghna Babbar-Sebens, CCE • Andy Brickman, CBEE • John Cochran, CBEE • Gary Hickman, CH2M • Dr. Jeff Nason, CBEE • Sarah Burch, CBEE Graduate student Project Sponsors • Dave Eckert, Corvallis Sustainability Coalition • OSU Capital Planning and Development • Dr. Phil Harding, CBEE TAPE Technical Advisors • Dr. Doug Howie, Washington State Department of Ecology • Carla Milesi, University of Washington Tacoma Center for Urban Waters A B Figure 4. Team Photo by the Kelley Engineering Center storm filter. Picture by Dr. Harding. Figure 2. Total suspended solids for storms on A) April 11 th , B) April 25 th , C) April 27 th , D) May 11 th , E) May 12 th , F) May 16 th . Error bars represent the standard error of the mean for N=3 replicates per site; storm A has N=1 replicates for all samples except Fairbanks inlet (N=5). A green check mark represents that TSS TAPE requirements have been met for that site location. A red or “X” represents an event that did not pass the required removal of TSS by TAPE. Storm Date Time Interval Sampling Time Total Precipitation (inch) Locations Sampled 11-Apr 4:00 pm – 12:00 am 5:30 pm 0.40 Kelley, Fairbanks 25-Apr 3:00 am - 6:30 pm 6:00 pm 0.20 Kelley, Johnson 27-Apr 12:00 am - 3:00 pm 12:00 pm 0.07 ** Kelley, Fairbanks, Johnson 11-May 4:00 am - 12:00 pm 4:00 am 0.29 Kelley, Fairbanks, Johnson 12-May 12:00 pm - 3:00 pm 12:00 pm 0.07 ** Kelley, Fairbanks 16-May 12:00 am – 10:00 am 2:00 am 0.25 Kelley, Fairbanks, Johnson * TAPE testing requirements are from Washington State Department of Ecology Disclaimer: Results are preliminary. We have analyzed all storms, including those that do not meet the minimum storm intensity defined by TAPE. Do not draw final conclusions from our data. A B C 17.20 16.60 2.21 0.63 23.19 23.75 0 20 40 60 80 100 120 FAIR IN FAIR OUT KELLEY IN KELLEY OUT JOHN IN JOHN OUT Total Suspended Solids (ppm) INLET TSS > 100 ppm: 80% removal TSS INLET TSS < 100 ppm: OUTLET < 20 ppm FAIR: KELLEY: 2.5 2.3 23.4 16.7 0 20 40 60 80 100 120 KELLEY IN KELLEY OUT JOHN IN JOHN OUT Total Suspended Solids (ppm) INLET TSS > 100 ppm: 80% removal TSS INLET TSS < 100 ppm: OUTLET < 20 ppm 67.8 30.0 10.4 6.3 48.6 33.1 0 20 40 60 80 100 120 FAIR IN FAIR OUT KELLEY IN KELLEY OUT JOHN IN JOHN OUT Total Suspended Solids (ppm) INLET TSS < 100 ppm: OUTLET < 20 ppm INLET TSS > 100 ppm: 80% removal TSS 41.1 18.6 12.3 13.1 36.4 18.3 0 20 40 60 80 100 120 FAIR IN FAIR OUT KELLEY IN KELLEY OUT JOHN IN JOHN OUT Total Suspended Solids (ppm) INLET TSS > 100 ppm: 80% removal TSS INLET TSS < 100 ppm: OUTLET < 20 ppm 118.2 29.0 5.6 2.7 0 20 40 60 80 100 120 FAIR IN FAIR OUT KELLEY IN KELLEY OUT Ttotal Suspended Solids (ppm) INLET TSS > 100 ppm: 80% removal TSS INLET TSS < 100 ppm: OUTLET < 20 ppm D KELLEY: JOHN: FAIR: KELLEY: JOHN: FAIR: KELLEY: JOHN: FAIR: KELLEY: FAIR: KELLEY: JOHN: 22.87 14.19 10.50 4.38 0 20 40 60 80 100 120 FAIR IN FAIR OUT KELLEY IN KELLEY OUT Total Suspended Solids (ppm) INLET TSS > 100 ppm: 80% removal TSS INLET TSS < 100 ppm: OUTLET < 20 ppm D E F ** Does not meet minimum storm intensity of 0.15 inches/storm event
Transcript of COLLEGE OF ENGINEERING Chemical, Biological ...
COLLEGE OF ENGINEERING Chemical, Biological & Environmental Engineering
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Comparative Analysis of CONTECH
StormFilters on OSU CampusSam Albert, Maceo Gutierrez-Higgins, Jessalyn Imdieke*
Conclusions & Observations• Initial results show that filters are not consistently
meeting desired TSS removal specifications
• Filter location/use may affect filter performance
more than age
• Fairbanks and Johnson locations are difficult to
sample due to submerged outlet pipe during nominal
flow conditions
• Fairbanks location appears to be plugged, there is
sludge buildup and bypass during storms smaller than
design storm
• Kelley location operating below design flow rate of
15 gpm
Recommendations• Clean, maintain, and replace filter cartridges as
needed
• Test filters throughout the Oregon wet season
Future work• Improve collection technique to reduce sludge
disruption in outlet pipe or invest in automated
sampler
• Determine method to estimate flow rates at the
Johnson and Fairbanks locations
• Troubleshoot nitrates and total phosphates tests
• Determine if Fairbanks location is performing
adequately during peak wet season
Kelley, 2005/06 Fairbanks, 2013 Johnson, 2016
CONTECH
BackgroundCONTECH StormFilters are located around campus to
remove contaminates from storm water. They use a
ZPG™ Media blend of zeolite, perlite, and granular
activated carbon to remove total suspended solids, and
to a lesser extent some soluble metals and organics.
We are testing three filter locations of various ages on
campus: Kelley Engineering Center, Fairbanks Hall, and
Johnson Hall. To our knowledge the filters have not
undergone maintenance since installation. Suggested
maintenance includes removing sludge from vault,
replacing cartridges yearly or as needed, and
performing monthly inspections during the wet-season.
Our goal is to determine if OSU-installed CONTECH
StormFilters meet local stormwater regulatory
requirements as the system ages, and to propose any
necessary mitigation.
Acknowledgments
Testing Methods
Technical Assessment Protocol Ecology (TAPE) Testing Requirements*
Influent Effluent goal
Total suspended solids (TSS) < 100 ppm
> 100 ppm
< 20 ppm
80% removal
Dissolved Copper 5 - 20 ppb 30% removal
Dissolved Zinc 20 - 300 ppb 60% removal
Total Phosphorous 0.1 - 0.5 ppm 50% removal
EPA Industrial Stormwater Benchmark
Nitrates - < 0.68 ppm
Total Suspended Solids (TSS)
SM 2450D
Dissolved Metals(Zinc and Copper)
SM 3030 E-2
Total Metals(Zinc and Copper)
ICP-OES
NitratesSM 4500-NO3 B
Total Phosphorus (TP)SM 4500-P B. 2 SM 4500-P E
Sample
W. M. Keck Collaboratory for Plasma Spectrometry
http://www.lpdlabservices.co.uk/Efficiency goals
Preliminary Results Total Suspended Solids
Dissolved and Total Metals
Storm Information
Figure 1. Schematic of a CONTECH StormFilter. Water enters under
the filter hood, passes through the filter media for purification, and
exits through the under-drain manifold. Design flow rate for an 18
inch tall cartridge is 7.5 gpm/filter.
Figure 3. ICP-OES analysis for dissolved and total metals for A) copper and B) zinc in the influent and effluent for the April-11th, April 25th, and
April 27th storms. Error bars represent the standard deviation of N=3 storm samples for Kelley and N=2 storm samples for Fairbanks and Johnson
Hall. Milli-Q water was processed as a control after passing through a 0.45 µm filter used for all samples, using the total metals digestion protocol.
Technical Assistance
• Nathan Patterson, OSU Capital
Planning and Development
• Dr. Tyler Radniecki, CBEE
• Dr. Meghna Babbar-Sebens, CCE
• Andy Brickman, CBEE
• John Cochran, CBEE
• Gary Hickman, CH2M
• Dr. Jeff Nason, CBEE
• Sarah Burch, CBEE Graduate
student
Project Sponsors
• Dave Eckert, Corvallis
Sustainability Coalition
• OSU Capital Planning and
Development
• Dr. Phil Harding, CBEE
TAPE Technical Advisors
• Dr. Doug Howie, Washington
State Department of Ecology
• Carla Milesi, University of
Washington Tacoma Center for
Urban Waters
A B
Figure 4. Team Photo by the Kelley Engineering Center
storm filter. Picture by Dr. Harding.
Figure 2. Total suspended solids for storms on A) April 11th, B) April 25th, C) April 27th, D) May 11th, E) May 12th, F) May 16th.
Error bars represent the standard error of the mean for N=3 replicates per site; storm A has N=1 replicates for all samples
except Fairbanks inlet (N=5). A green check mark represents that TSS TAPE requirements have been met for that site
location. A red or “X” represents an event that did not pass the required removal of TSS by TAPE.
Storm Date Time Interval Sampling Time Total Precipitation (inch) Locations Sampled
11-Apr 4:00 pm – 12:00 am 5:30 pm 0.40 Kelley, Fairbanks
25-Apr 3:00 am - 6:30 pm 6:00 pm 0.20 Kelley, Johnson
27-Apr 12:00 am - 3:00 pm 12:00 pm 0.07 ** Kelley, Fairbanks, Johnson
11-May 4:00 am - 12:00 pm 4:00 am 0.29 Kelley, Fairbanks, Johnson
12-May 12:00 pm - 3:00 pm 12:00 pm 0.07 ** Kelley, Fairbanks
16-May 12:00 am – 10:00 am 2:00 am 0.25 Kelley, Fairbanks, Johnson * TAPE testing requirements are from Washington State Department of Ecology
Disclaimer: Results are preliminary. We have analyzed all storms,
including those that do not meet the minimum storm intensity defined
by TAPE. Do not draw final conclusions from our data.
A B C
17.20 16.60
2.21 0.63
23.19 23.75
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FAIR IN FAIR OUT KELLEYIN
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INLET TSS < 100 ppm: OUTLET< 20 ppm
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FAIR IN FAIR OUT KELLEY IN KELLEY OUT
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D
KELLEY: JOHN: FAIR: KELLEY: JOHN:
FAIR: KELLEY: JOHN: FAIR: KELLEY: FAIR: KELLEY: JOHN:
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D E F
** Does not meet minimum storm intensity of 0.15 inches/storm event
