Illinois Lakes Management Association - Muck … Munching...Muck Munching: a two-year feasibility...
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Muck Munching: a two-year feasibility study for in-lake organic sediment management Upper Fish Lake, LaPorte County, Indiana Fish Lake Conservancy District
Transcript of Illinois Lakes Management Association - Muck … Munching...Muck Munching: a two-year feasibility...
MuckMunching:atwo-yearfeasibilitystudyforin-lakeorganicsediment
management
UpperFishLake,LaPorteCounty,Indiana
Fish Lake Conservancy District
SolarBee™MechanicalAerator(SB10000)
0
2
4
6
8
10
12
14
16
May
Jun Jul
Aug
Sep
Oct
DissolvedOxygen(m
g/L)
DissolvedOxygenConcentraHonsat1.5KWaterDepth,UpperFishLake,2015
0
2
4
6
8
10
12
14
16
Mar
Apr
May
Jun Jul
Aug
Sep
DissolvedOxygen(m
g/L)
DissolvedOxygenConcentraHonsat1.5KWaterDepth,UpperFishLake,2016
BiologicalTreatmentOnlyArea AeratedArea
0% 1%8% 12%
27%
0% 0% 0%8%
67%
28%
84%
15%
0%
14%
25%35% 36%
11%
0% 0%
16%
34%
48%
73%
8%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%Ap
r,2015
Jun,2015
Jul,2015
Aug,2015
Sep,2015
Oct,201
5
Apr,2016
May,201
6
Jun,2016
Jul,2016
Aug,2016
Sep,2016
Oct,201
6
Percen
tofH
mebe
low4m
g/L
PercentofMonthlyPeriodBelow4mg/L,UpperFishLake,2015-2016
WithSolarBeeAerator
WithoutSolarBeeAerator
0
2
4
6
8
10
12
April May June July Aug Sept Oct
Depth(K)
SecchiDepth,CenterofUpperFishLake,2016
2.50
3.00
3.50
4.00
4.50
BiologicalTreatmentOnly AeraGonOnly BiologicalandAeraGon
DepthofW
ater(K
)
VariaHoninDepthtoTopofSediment(10in2disk),UpperFishLake
24-Jun-15
24-Oct-15
17-Jun-16
7-Oct-16
NoNetChange ~5"Increase
Strategy(peracre,UFL)
CapitalInvestment
AnnualMaterials
CostAnnualLabor
AnnualPowerand
MaintenanceCost
TotalAnnualCost1
AnnualBenefit2
AnnualBenefit
(sediment,yd3)
AnnualCost-Benefit
AnnualCost-BenefitifallFLCD'free'
labor
SolarbeeTM $15,000 $400 $1,000 $2,178 109 $1,178 $1,578
SolarbeeTMwithBiological
AugmentaHon$15,000 $900 $2,800 $4,300 $2,904 145 -$1,396 $1,404
DiffuserAeraHon $2,623 $50 $356 $464 $974 $2,178 109 $1,204 $1,559
DiffuserwithBiological
AugmentaHon$2,623 $950 $2,756 $464 $4,274 $2,904 145 -$1,370 $1,385
1Includescapitalinvestmentconsideringa25-yearequipmentlifespan,materials,labor,maintenanceandpowercosts2BasedoncurrentesHmateof$20percubicyardofdredgedsediment
