Biofiltration for VOCs and Odors abatement

In a biofilter, the polluted gases pass through a bed of packing media covered with a layer of aerobic microorganisms. The pollutants are transferred from air into the biofilm where they are utilized by microbes as energy source. In the same time, the packing bed is continuously irrigated with an aqueous solution containing essential nutrients required by the bio-organisms.

Process Flow

Exhaust gas condenser	The condenser turns most of the water vapor in the exhaust gas into liquid water, which can reduce the volume of the exhaust gas by more than 40% and reduce the subsequent processing load.
Chemical Spray Tower	The spray scrubber absorbs ammonia and hydrogen sulfide in the exhaust gas by adding different absorption liquids, reducing the load of biological trickling filtration.
Biofiltration	Using VOCs in exhaust gas as the energy and carbon source of microorganisms, through the metabolism of microorganisms, degrade trimethylamine, ethanethiol, ammonia, hydrogen sulfide and other substances in exhaust gas into non-toxic and harmless CO2H2O, sulfate, nitrate, etc. of small molecules.