FLOW THROUGH WATER TREATMENT SYSTEM USING ALUM

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FLOW THROUGH WATER TREATMENT SYSTEM USING ALUM
PAM
REEDY CREEK IMPROVEMENT DISTRICT
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BRIDGE DEMOLITION PROJECT _at_ EPCOT WINTER 2000
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High Pressure Water Blasting To Remove Concrete
Down To Rebar
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After Blasting With 15,000 psi Water Jet
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Runoff Turbidity Greater Than 300 NTUs
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Runoff Diverted Into Bridge Stormwater System
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Aluminum Sulfate Added Via Gravity Feed From
Trailer Rig
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Wood Baffle Boards Skim Large Concrete Debris
Provide Alum Mixing
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Runoff Flows Into 1st Cell Of Three Stage
Treatment System (Inflow gt300 NTU)
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1st Stage Treatment Inflow gt300 NTU Outflow
30 NTU
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2nd Stage Treatment Inflow 30 NTU Outflow 17
NTU
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Polyacrylamide (PAM) Floc Log Used For Final
Polishing (40-50 Turbidity Reduction) Free
Aluminum Binding
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Final Discharge Water Sheet Flows Over Grass Berm
(Trapping Sediment)Then Into Canal Behind
Floating Turbidity Boom
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Canal Receiving Water 15 NTU Final Discharge
Water 10-12 NTU
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Self Contained Water Treatment System
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Treatment System Performance System Usage 15
Days Daily Volume 80,000 Gallons Total Pumping
Volume 96 Million Gallons Alum Usage 40 Gal
/ Day (600 Gal Total) Treatment System Size 50
x 15 Ft. Turbidity Reduction (NTU) gt300 (Inflow)
15 (Outflow) Turbidity Reduction 95
Contractors System Cost lt 1,000 Time Lost
Due To Non-Compliance NONE!
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Contractor Hubbard Construction Contact Jeff
Forsythe [phone]