Aerobic Digesters / Aerated Sludge Tanks

Aerobic digesters and aerated sludge holding tanks require both aeration to satisfy oxygen demand and mixing of the biomass to provide homogeneity. In both applications, it is common that process is mixing limited.

The BioCycle-D Optimized Aerobic Digestion Process creates ideal conditions for aerobic sludge digestion through cyclical aerobic and anoxic process phases, controlled via instrumentation feedback to maximize volatile sludge destruction, provide nutrient reduction and sequestration, and improve sludge dewaterability.

The BioMix Compressed Gas Mixing System is a core part of BioCycle-D and can be provided as an efficient mixing solution in aerated sludge holding tanks as well. Energy savings for either application are typically in excess of 50% versus a conventional aerated mixing system alone.

For aerobic digesters and aerated sludge tanks, a CAMix Cyclic Aerated Mixing System can provide process oxygen and energy efficient mixing without the over-aeration associated with conventional continuous aerated mixing. CAMix also eliminates the need for separate aeration and mixing systems.

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Advantages

Energy Efficiency Icon
Energy Efficiency
  • Ability to mix at less than 20% of the energy compared to jet or diffused air mixing
  • Comparative energy savings increase with increased depth and solids concentration applications
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Straightforward Operation
  • Non-clogging, maintenance free components in the tank
  • Mixing operation that can be manually controlled or initiated by process instrumentation feedback
Process Optimization
  • Seamless integration with aeration equipment
  • Decoupled aeration from mixing facilitates independent control over oxygen delivery and mixing
  • Ability to operate concurrent or independent of aeration for optimized process conditions
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Unparalleled Flexibility
  • Mixing suitable for uniformly mixing sludge at nearly any concentration
  • Ideal for sloped floor or conical tank bottom configuration, thereby eliminating dead zones below aeration system
  • No low water level limitations — able to mix at any depth