TECHNOLOGY DESCRIPTION
vitaAER bio-trickling filters consist of polypropylene (PP), glass reinforced plastic (GRP) or concrete reactor vessels housing synthetic media to support microbial growth. Foul air supplied by a fan enters at the bottom of the reactor vessel with water supplied by a recirculation pump and evenly distributed from the top to maintain a moist environment for gas-liquid phase transfer, to support microbial growth and to flush out dead bio-mass and salts.
CONTROLLED LIQUID RECYCLING
Controlled recycling of the liquid guarantees constant and reliable odour removal performance:
- pH can be maintained within ideal parameters
- ensures constant microbe reseeding
- constant scouring of media prevents anaerobic zones from developing salts
- metabolites and dead bio-mass are flushed out
- allows controlled nutrient addition (if needed)
- allows better temperature control
- saves water
EVEN AIRFLOW & EFFICIENT MASS TRANSFER
Air and water flows are countercurrent to ensure even air distribution and improved mass transfer.
CONFIGURATION TO CUSTOMER NEEDS
Flexible design allows for housing of bio-trickling filter technology in cylindrical or rectangular vessels to match site conditions and customer preferences.
VESSEL MATERIALS
Vessels are fabricated from polypropylene, glass reinforced plastic or concrete for large systems (airflows>20000m³/h). Plastic vessels are corrosion resistant and designed for a 20-year lifespan. Concrete vessels are lined with HDPE anchor knob sheeting to protect against sulphuric acid attack.
RECIRCULATION PUMPS
Recirculation pumps are constructed from acid-resistant materials and selected for reliable operation and low maintenance.
MEDIA
Our engineered synthetic media is selected for its large surface area/volume ratio, water storage capacity, pore size, low pressure drop, structural integrity, 10-year lifespan and chemical/biological resistance. Our media is guaranteed to last for a minimum period of 10 years.
NUTRIENT DOSING
Where treated effluent is not available nutrient containing nitrogen, phosphorus, potassium and trace elements are added to sustain biological activity.
ODOUR VARIABILITY
vitaAER bio-trickling filters are engineered to cope with variable odour concentrations ensuring constant and reliable odour removal.
SIMPLE & RELIABLE OPERATION
There are no complicated control systems or sensors. PLC operation is not required. Airflow and water recirculation rates are set at time of commissioning. Nutrients (where required) are replenished monthly. Irrigation water pH is maintained between 1-3 by continuously bleeding a small volume of process water.
CONTROL PANELS
Control panels are locally designed and constructed to local codes and individual customer specifications. All components are locally available for quick and easy replacement.
LOCAL CONTENT
Designed and manufactured (locally) in collaboration with our local and international technology partners.
