Florida, USA – Advanced Sequencing Batch Reactor,

  • 300,000 gpd ASBR facility replaced the existing
    concrete and steel conventional extended aeration activated sludge treatment, settlement clarifiers, and aerobic sludge digestors.
  • Receives wastewater collected from 14 neighborhoods, residential housing, nursing homes and hospital facilities on a 425 acre site.
  • Wastewater treatment comprises flow metering,  fine screening and washing, grit collection, surge tank (flow balancing), flow splitting, two (2) basin ASBR process, flow equalization, tertiary filtration and disinfection with chlorine.
  • Treated effluent is pumped to a 1 million gallon storage tank and then used for grass and golf course irrigation.
  • Waste sludge treatment includes aerobic digestion, storage and conditioning.

The ASBR features:

  • Stainless steel effluent decanters.
  • Highly efficient fine bubble membrane diffused air aeration system.
  • PD blowers with variable speed drives, and PLC and SCADA control system.
  • ASBR Basin dimensions are 15.5m (51’) long x 7.0m (23’) wide x 5.5m (18’) deep, with a top water level of 5.2m (17’).
  • The ASBR achieves a high quality effluent discharge including BOD and TSS removal.
  • Nitrogen reduction through nitrification and denitrification, and biological Phosphorus removal.
  • Large fluctuations in biological and hydraulic loads are automatically accommodated with the flexible process control cycles.
  • SCADA monitors the plant and logs and stores data for historical trending.

Population Equivalent (PE) 4,500
Influent Conditions Effluent Limits
Average Design Flow 1,136 m3/d (300,000 gpd)
Peak Flow 1,703 m3/d (450,000 gpd)
BOD 220 mg/L 5 mg/L
TSS 296 mg/L 5 mg/L
TkN 50 mg/L 10 mg/L
NH3N 30 mg/L 1 mg/L
TP 8 mg/L 1 mg/L

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