With proper design and correct operation, 90–99%+ odor removal is achieved in most applications.
Energy consumption is low; chemical consumption is limited (only pH/nutrient adjustment).
Controlled water use in humidification and/or circulation.
Packing moisture and air distribution are regularly checked. Pressure loss is monitored; surface loosening/mixing is done when necessary. In biotrickling filters, pH/nutrient adjustment and blowdown tracking are performed.
Depends on conditions. Typical 1–3 years in organic packing, 3–5 years and above in inorganic/synthetic packing is targeted (with periodic control).
Bed area and contact time (air residence time) are selected accordingly.
Air must be humid for microorganisms; extreme hot/cold fluctuations should be prevented.
Near-neutral pH is maintained, especially in biotrickling filters.
Simple nutrient additions containing nitrogen/phosphorus may be required for microorganisms.
If oil/mist/dust load is high, pre-separation or mist eliminator is used to protect the biological bed.
Body (HDPE/PP/FRP etc.) and equipment resistant to humid and slightly acidic/basic environments.
• Low operating cost (energy/chemical)
• Environmentally friendly, stable performance
• High efficiency in continuous loads
• Commissioning time is required (microbial ecosystem establishment)
• May be insufficient alone in highly variable loads and solvent peaks
• Humidity/temperature and air distribution require disciplined monitoring
For "final polishing" at the outlet
Scrubber dampens sudden peaks, biofilter handles low operating cost main treatment
Efficiency and bed life increase with humidification/cooling
Sources, duct-fan, layout; simple gas measurements if necessary
Bed dimensions and packing selection according to flow rate, odor type and target outlet value
Body, distribution system, humidification/circulation, automation
Humidity, air distribution and pH/nutrient adjustment
Started with low load in the first days, gradually increased. Microorganisms multiply and settle in the packing. Efficiency usually reaches high level within 3–6 weeks.
Operator training, maintenance plan, consumables program
With proper design and operation, it usually falls below detectable level. Target level is clarified in the project.
It takes time for microorganisms to multiply and reach equilibrium. During this process, humidity, pH and nutrient balance are maintained; load is gradually increased.
Biological activity decreases at very low temperatures. Stable performance year-round is ensured with humidity/temperature conditioning and protection against wind/cold effects.
It is easily managed with routine checks (humidity, pressure loss, pH/nutrient – for trickling), periodic surface loosening and limited blowdown when necessary.
Excessive disinfectant and solvent peaks suppress biology. If such peaks exist, pre-treatment or hybrid solution is planned.
Biofilter is a sustainable, economical and effective odor control method. It offers high performance in continuous H₂S, ammonia and biodegradable odors. With proper humidity/temperature and regular maintenance, it provides long-lasting, stable results. We can design biofilter or biotrickling configuration specific to your project; hybrid with scrubber/activated carbon if necessary.