Biofiltration
Perspectives and Insights > Biofiltration
What is Biofiltration?
- Traditional filtration (sand, anthracite, GAC) with microbial growth (biofilm)
- Biofilm consumes organic matter by oxidation
- Typically placed towards end process before disinfection
- Can be used on surface and groundwater
Benefits of Biofiltration
- Removes pathogens and particles like nonbiological filters
- No additional energy requirements to conventional filtration
- taste and odor compounds
- disinfection byproducts
- Chlorine residual stability
- Manganese, iron, ammonia
- microbial regrowth potential
Considerations
- Nutrient dosing to maintain biomass, if needed
- pH adjustment
- Initial startup/acclimation
- Aeration of groundwater
- Upstream oxidation
AE2S Experience
- Pilot Study and Testing
- Map of biofiltration projects?
