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Case Study for Customer Location GA74:
Reservoir or Lake Use:
Man-made lined storage reservoir which receives water from the lake. This reservoir serves as a raw
water source for the.
System Overview and Reservoir:
Surface area is 6 acres; volume is 20 MG and maximum depth is 15 ft. when full. Design flow to water
treatment plant is 22 MGD.
Reported Problem Before SolarBee Installation:
High levels of iron (Fe) and manganese (Mn) entering the treatment plant, short-circuiting, low levels
of dissolved oxygen (DO).
SolarBee Installation:
Date: November 2002; installed two (2) SB10000 units with 24-hour kits; a chemical injection kit was
also installed on one SolarBee.
Results:
Soon after installation, the manager reported DO levels at near saturation and significant reductions
in Mn concentrations. Testing in 2003 and 2004 indicated relatively high levels of Fe and Mn coming
from the feeder lake. From fall through spring (when the lake is naturally mixed and oxygenated),
influent concentrations averaged 1.2 mg/L Fe and 0.2 mg/L Mn. During summer stratification of the
lake, influent concentrations averaged 1.8 mg/L Fe and 0.35 mg/L Mn. Although testing showed high
Mn inputs to the reservoir, concentrations entering the water treatment plant were significantly
reduced. As influent water goes through the SolarBee pond, with a 1-2 day detention time, there was
about a 20% average reduction in Fe and a 50% average reduction in Mn. The use of chemicals for
precipitating these metals has been minimized. The manager is very pleased with both the significant
improvements in water quality as well as the customer service SolarBee, Inc. has provided him.
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SolarBee
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SolarBee SB10000 – one of two in the reservoir.
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