Biofilters are systems used to biologically eliminate foul smells of industrial or waste treatment plants which can usually be found in the exhaust output .

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Bio-filtration with Drening


Waste treatment and smell neutralization


A biofiltration system is a smart and eco-friendly solution to filter the output of industrial plants in a biological way.


Geoplast has two different products that can be used for this aim, BIODRENING and BIOMODULO.


BIODRENING consists in plastic and modular elements made of HDPE. BIODRENING allows the creation of biofilters in the floor with a dry installation of the product, avoiding the introduction of a concrete slab. The high resistance of the BIODRENING prevents it from collapsing due to the weight of the overlying layers. Moreover, the perforated side surface of BIODRENING elements allows the flow of fresh air inside the filter layer and ensures its homogeneous distribution. BIODRENING is ideal for biofilters of limited size, in which there is no need of devices for the replacement of the filling material.


For a deodorized air diffusion system Geoplast suggests BIOMODULO, a disposable formwork which can be used to build a perforated floor for the distribution of air inside the biofilter, thus simplifying its creation.


BIOMODULO is made of regenerated Polypropylene, obtained from the recycling of the plastic waste. Its strength and solidity make BIOMODULO resistant to high breaking loads.

BIOMODULO has 4 nozzles closed with caps which are removed after the pouring of the slab in order to create the holes for an homogeneous air distribution. BIOMODULO allows also the creation of floors resistant to the passage of heavy vehicles.

Thanks to its lightness and the use of compensation accessories, the installation of the system is particularly easy and fast.


  • Versatility
  • High load bearing capacity
  • Modularity
  • Quick and easy to lay
  • Excellent air distribution
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