Aquacare Biofilters
Biofilters convert nitrogenous waste products from the fish to less toxic compounds. This significantly reduces the farm’s water demands.
We design and supply 5 different types of Aquaculture Biofilters:
MICROPORE BIOFILTER
*NITRIFICATION
Utilizing polyethylene micropore disk media with ultra high protected surface area. Highly effective and stable, compact,very low head, very economical media. Integrates CO2 stripping.
MOVING BED BIOFILTER
*NITRIFICATION
Utilizing a variety of plastic media with specific surface areas ranging from 500 to 5000 m2/m3 and agitated using air. Highly effective, can be operated over a wide range of hydraulic loadings and stable.
FLUIDIZED BIOFILTER
*NITRIFICATION
Sand media fluidized by water flow. Highly effective, low cost media, higher pumping head required and less tolerant of flow variation.
TRICKLE FILTER BIOFILTER
*NITRIFICATION
Passive filters with and without countercurrent air flow. Simple and effective, often combined with effective CO2 stripping this kind of filter requires relatively large footprint.
MULTI-CELL BIOFILTER
*DENITRIFICATION
Multi-cell biofilters have automatic carbon source dosing. Bacteria are first starved of oxygen, then with the addition of supplemental carbon source remove the O from NO3. Carbon addition is controlled using an ORP sensor feedback loop.