The immobilization of the biomass and the formation of the biofilm are generally a naturally controlled process which starts after inoculation of the water phase. The quality of the mass transfer from the gas to the liquid phase and the elimination performance of the reactor depend essentially on the wetted surface area of the packing. Therefore, in order to maximize the wetted surface area, the liquid phase should be distributed uniformly over the surface of the biofilm. The continuously circulating liquid phase takes on the function of supplying the microbe population with the necessary nutrients. At the same time, excess activated sludge and reaction products which can also be inhibitors are washed out of the reactor. In the liquid phase, the essential conditions such as pH, nutrients and salt accumulation need to be controlled. The stream of treated (cleaned) air leaves the biofilter together with formation of CO2, H2O and biomass as biodegradation products.

Vessel can be realized in several materials, such as AISI 304, AISI 316, PP (polypropylene), galvanized steel.

Biotrickling filters operate with the air and water phases moving either counter-currently or co-currently, depending on the specific operation.

Our team of A&L Engineering will support you at the aim of obtaining the best air treatment system you need.