Anaerobic and Aerobic Digestion

Bennett Environmental engineers can use advanced technologies in anaerobic plus aerobic digestion or a phased approach that includes both. This allows us to customize water cleanliness, set specific levels to meet and exceed regulations and to re-use water in different applications. We can also optimize a space footprint and design a sustainable energy model to focus on the ultimate cost reduction priorities of each type of client partner. Please see the matrix and other information below that briefly explain how we can accomplish this with two of our technologies “Agrobics” and “Aquanos”. 

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AgRobics
Anaerobic   

Patented variation on UASB
Aerobic   

N/A
Ideal Influent   

Low TSS, high BOD/COD
Target Applications/Markets  

Food processors, wineries
Advantages - Anaerobic   

  • Efficiency, high rate reactor
  • Small Footprint
  • 20-25% more biogas than covered lagoons
  • Remote operation
  • Drastically reduces energy consumption vs. aerobic treatment alone
  • No smell or VOCs
  • Simpler - no 3 phase separator
  • Fast startup / easier seasonal operation
  • No biomass washout
  • Withstands fats, oils, greases, saline effluent
  • Withstands many toxins
  • Low maintenance
  • Retrofit to any tank or geometry option
Advantages - Aerobic    

N/A
 


Aquanos
Anaerobic   

UASB
Aerobic   

Moving Bed Biofilm Reactor (MBBR) with oxygen supplied by algae raceways
Ideal Influent   

High BOD/COD with wider options for TSS:  consult with us
Target Applications/Markets  

Dairies, food processors, small communities
Advantages - Anaerobic   

  • Efficiency, high rate reactor
  • Small footprint
  • 20-25% more biogas than covered lagoons
  • Remote operation
  • Drastically reduces energy consumption vs. conventional aerobic treatment alone
  • No smell or VOCs
  • Tried and proven design, applied worldwide
Advantages - Aerobic    

  • Very high quality effluent with aerobic treatment:  lower BOD/COD and TSS
  • Very efficient given photosynthetic oxygenation
  • Nitrogen reduction can be incorporated, as desired
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Solution Benefits

Bennett Environmental offers a toolbox of more affordable and compact Anaerobic and Aerobic water treatment solutions. They reduce pollutant levels, while capturing biogas for energy.

 

Cleaner Water

Sustainable Energy Production

Smaller Footprint

Lower total-cost Solution


Agrobics’ Simple solution to a difficult problem:

 

 

No Costly Three Phase Separator

 

Fewer Scum Problems

 

Remote Operation

Fast Startup

 

Withstands Fats, Oils, Grease, Saline Effluent

 

Retrofit to any Tank or Geometry Option

Blazing Fast Processor

 

Withstands Many Toxins

No Biomass Washout

 

Very Low Maintenance

Aquanos Technology-Optional 2nd Phase - Aerobic Digestion

 

Moving Bed Biofilm Reactor (MBBR)

  • Aerobic COD removal and nitrification
  • Biomass grown on small HDPE elements
  • Oxygen rich water from algae raceways feeds aerobic bacteria in an efficient manner
 

Algae Raceway

  • Natural algae converts CO2 from MBBR to O2 via photosynthesis, which in turn aerates the wastewater
  • Efficient symbiotic relationship between algae and aerobic bacteria