nitrogen & phosphorus removal from groundwater little bogue, ms. constructed november 2009
TRANSCRIPT
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NITROGEN & PHOSPHORUS
REMOVAL FROM GROUNDWATER
LITTLE BOGUE, MS.CONSTRUCTED
NOVEMBER 2009
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RS2 Test Site: Little Bogue, Elliott, MS
On the narrow mid-bank bench (average width 8-10 ft, approx. 8 ft above the streamside floodplain bench), a trench a bucket wide (1.0 ft) was dug to
a depth of 4 ft. This should intercept a large amount of shallow groundwater.
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Research Monitoring & Research Monitoring & AnalysisAnalysis
• Hydrolab used to measure DO, ORP, temp, conductivity, turbidity & pH
• Lab measurement of ortho-P, NO3-N, TOC, alkalinity and NH3-N
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0.04 0.05 0.09 0.04
99.499.4
99.2
99.5
0
2
4
6
8
10
12
NO
3-N
(m
g/L
)
98.6
98.7
98.8
98.9
99.0
99.1
99.2
99.3
99.4
99.5
99.6
% R
em
ov
ed
Feed 6.89 7.30 10.70 9.50
Effluent 0.04 0.05 0.09 0.04
% Removal 99.4 99.4 99.2 99.5
6/22/2005 9/12/2005 3/31/2006 7/14/2006
Colorado State Field LabColorado State Field Lab Nitrogen Removal Results
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0
10
20
30
40
50
60
70
80
90
100
Cell A (sawdust) Cell B (control) Cell C (WTR)
Ave
rage
P R
emov
al (%
)Colorado State Field LabColorado State Field Lab
Phosphorus Removal Results
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Aerial view with approximate research project trench location in yellow & control section (trench not dug) in pink.
PRE-PROJECT - RS2 PROJECT-LITTLE BOGUE FROM RED HEN VIDEO
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RS2 Test Site: Little Bogue, Elliott, MS
There is a 75 ft long control section (nothing done, no trench, just monitoring instruments), and a 150 ft long test trench section. Within the downstream 75 ft of the test trench, three 25 ft-long test plots of adventitious rooting poles of Black Willow, Sycamore, & River Birch were placed, spacing varied from 1 to 2 ft.
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RS2 Test Site: Little Bogue, Elliott, MS
For the test section shovels were used to backfill the trench with a mix of 20% (by volume) Aluminum Sulfate, xx% mulch, and the
remainder native soil from the trench. This effectively planted the live poles to a depth of 4 ft.
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RS2 Test Site: Little Bogue, Elliott, MS
Monitoring instruments determine performance of the control and planted & not planted test sections. Instruments at different depths
will determine if some groundwater is bypassing the test trench.
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RS2 Test Site: Little Bogue, Elliott, MS
According to the CSU laboratory tests, the Aluminum Sulfide and carbon (mulch)
should greatly reduce the Nitrogen & Phosphorus load to the stream.
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Install instrumentation as required. Monitor for
long-term project performance.
200 ft
RS2 Test Site: Little Bogue, Elliott, MS - aerial view
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Looking US @ entrance conditions into project bend. Note floodplain bench & mid-bank bench where the test will occur.
PRE-PROJECT - RS2 PROJECT-LITTLE BOGUE PIX BY DAVE DERRICK 4-2-08
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Looking US @ the mid-bank bench where the test will be conducted. Control area in pink, test trench location in black.
PRE-PROJECT - RS2 PROJECT-LITTLE BOGUE PIX BY DAVE DERRICK 4-2-08
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LET’S DO SOME
RESEARCH !!
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Two bags of Aluminum Sulfate for each bag of Eucalyptus mulch
CONSTRUCTION-RS2 PROJECT-LITTLE BOGUE PIX BY DAVE DERRICK 11-19-08
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Hand labor is used to mix Aluminum Sulfate & mulch into backfill. Next time an excavator will be used to mix and backfill, we are
learning!! No plantings in this first 75 ft.
CONSTRUCTION-RS2 PROJECT-LITTLE BOGUE PIX BY DAVE DERRICK 11-19-08
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Trench was dug to a consistent depth of 4 ft for entire length
CONSTRUCTION-RS2 PROJECT-LITTLE BOGUE PIX BY DAVE DERRICK 11-19-08
John McCullah says,
“Dig a hole, plant a pole!!”
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Looking US @ seeded & mulched trench, berm, & plantings.
CONSTRUCTION-RS2 PROJECT-LITTLE BOGUE PIX BY DAVE DERRICK 11-19-08
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MONITORING INSTRUMENT
INSTALLATION PHOTOS BY
CHESTER WATSON JANUARY 12, 2009
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Dr. Biedenharn with some of the monitoring instruments.
MONITORING INSTRUMENT INSTALL-LITTLE BOGUE PIX BY WATSON 1-12-09
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Looking US @ test site. Excellent planted grass coverage.
MONITORING INSTRUMENT INSTALL-LITTLE BOGUE PIX BY WATSON 1-12-09
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Looking US @ the test area. Great rye grass growth on all disturbed areas.
MONITORING INSTRUMENT INSTALL-LITTLE BOGUE PIX BY WATSON 1-12-09
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7 MONTHS AFTER PROJECT
COMPLETIONPhotos by Derrick
JULY 3, 2009TAKING SOIL SAMPLES
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Looking US @ test site. Excellent planted grass coverage.
7 MONTHS AFTER TRENCHING-LITTLE BOGUE PIX DERRICK 7-3-2009
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Looking US @ the test site. All planted poles died except for one willow!!!
7 MONTHS AFTER TRENCHING-LITTLE BOGUE PIX DERRICK 7-3-2009
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Close-up of the one willow that lived.
7 MONTHS AFTER TRENCHING-LITTLE BOGUE PIX DERRICK 7-3-2009
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Looking downhill at one of the monitoring wells.
7 MONTHS AFTER TRENCHING-LITTLE BOGUE PIX DERRICK 7-3-2009
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Ground water & soil sampling protocol from
Dr. Ken Carlson,
Colorado State University.
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Tools used to take a soil sample 16 inches below the surface.
7 MONTHS AFTER TRENCHING-LITTLE BOGUE PIX DERRICK 7-3-2009
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Very dry for the top 7 inches or so in each of the 15 soil sample holes
7 MONTHS AFTER TRENCHING-LITTLE BOGUE PIX DERRICK 7-3-2009
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Man’s best friend, Cleophus Speed Elvis Derrick