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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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Industrial ASBR Wastewater Treatment Facility, India

This two (2) basin ASBR facility near Mumbai, receives a variety of
industrial wastewaters collected from many factories and chemical
production facilities.

The 10,000 m3/d wastewater plant comprises flow metering, chemical treatment,  pH correction, flow splitting, flow equalization with aeration, chemical precipitation and lamella plate clarification, two (2) basin ASBR biological treatment process, and effluent equalization.  Waste sludge storage, conditioning and belt press facilities are provided. and the sludge cake is disposed off site.

The ASBR design features 10m long stainless steel moving weir effluent decanters, high efficiency Triton floating mixer/aerators, dissolved oxygen control system, level controls, and process control PLC and SCADA system. Basin dimensions are 57m long x 38m wide x 6.5m deep, with a top water level of 6.0m.

The ASBR plant is designed to achieve a high effluent quality including BOD and TSS removal, and Nitrogen reduction with discharge to the river. Large fluctuations in biological and hydraulic loads are automatically accommodated with the  flexibility and control offered by the operational time cycles. A SCADA system monitors the overall plant systems, and automatically logs and stores data for historical trending and data analysis.

  • Population Equivalent (PE) 102,000
  • Influent Conditions Effluent Limits
  • Average Design Flow 10,000 m3/d (2.6 MGD)
  • BOD 625 mg/L 30 mg/L
  • TSS 300 mg/L 30 mg/L
  • TkN 75 mg/L
  • NH3N 30 mg/L
  • TP 8 mg/L