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Location:
Sykesville,
Carroll County, Md.
Constructed:
Built
in 1976, MES began operating in 1976
Design
flow:
3.5
million gallons per day
Actual
flow:
2
million gallons per day
Process:
The
treatment process consists of screening, grit
removal, primary clarification, flow equalization,
lime addition and advanced biological nutrient
removal consisting of two parallel treatment
trains.
Each
train utilizes an anoxic zone with mechanical
mixers for denitrification, then flows to the
aeration tanks using fine bubble diffused air.
Chlorine addition to the return sludge flow is
then utilized for process control.
Three
secondary clarifiers and six dyna sand filters
polish the effluent prior to disinfection by four
banks of ultra violet lamps. Alum is added for
phosphorus removal ahead of the secondary
clarifiers.
Solid
handling consists of two gravity thickeners, two
aerated sludge holding tanks, two 2.2 meter belt
filter presses, lime stabilization of sludge cake
prior to landfill disposal. |
