BIOLOGICAL PROCESSES

FEATURES
  • Patented phase-separation technology
  • Unique power savings mode via staged aeration system
  • Operator controlled process environments in a flow-through mode
  • Integrated and dependable controls with outstanding operational flexibility
  • Time-based anoxic intervals promoting exceptional nitrate reduction
  • Flexible nitrogen control system reduces sludge recycle pumping requirements
  • Concentrated Return Activated Sludge (RAS) provides optimized process environments
  • Flow-through operation with multi-stage, enhanced performance capabilities
  • Superior process environment suited for cold weather climates

ADVANTAGES
  • Superior nitrogen and phosphorus removal
  • Flexible tank design and equipment options
  • Time-based process management
  • Load-proportioned power savings mode
  • Simple, yet flexible system operation

APPLICATIONS
  • Municipal/industrial wastewater
  • Enhanced nutrient removal
  • Wastewater reuse/reclamation
  • New plant construction, retrofits and conversion of oxidation ditches or other activated sludge systems

INTELLIPRO®

IntelliPro® Process Management System
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TYPICAL AQUAPASS™ SYSTEM LAYOUT  Header


  Anaerobic Stage

  • Untreated sewage is introduced to the anaerobic reactor
  • Concentrated, denitrified biological solids are transferred from the Pre-Volatile Fatty Acid (VFA) production is enhanced under anaerobic conditions
  • Turbulent and efficient mixing keeps particle turnover periods < 5% of the reactor's HRT
  • Elevated VFA-enriched mixed liquor is conveyed to the Staged Aeration/Anoxic Reactor

  Staged Aeration Reactor

  • Anaerobically conditioned bio-solids are received into the Staged Aeration Reactor
  • Multi-variable D.O. control manages discreet aerobic and anoxic intervals
  • Aerobic stages enable operator-defined D.O. levels to be controlled
  • Anoxic stages produce a completely mixed biomass at near-zero D.O. levels
  • Process management of aerobic/anoxic events via time or instrument feedback
  • Efficient oxygen delivery via proportional aeration management

  Phase Separator Conditioning Stage

  • Receives return-activated sludge from the final clarifiers
  • Enhanced solids concentration is promoted in a low-energy environment
  • Supernatant is returned to the Staged Reactors
  • Concentrated sludge is fed to the Pre-Anoxic reactor

  Pre-Anoxic Stage

  • Conditions sludge from the Phase Separator for further nitrate reduction
  • Aggressive mixing in the absence of DO prepares bio-solids prior to anaerobic treatment
  • Elevated solids concentration results in reduced pumping requirements
  • Variable frequency control of the pumps manages retention times in anaerobic and anoxic stages
  • Denitrified sludge is conveyed to the Anaerobic stage

OPERATION Header

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