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Air Clean

Environmental rehabilitation plants

Air treatment
Biogas upgrading

Impianto trattamento acque - biofiltro - Italia

Treatment of odour and VOC emissions produced by municipal wastewater treatment plants

Impianto trattamento acque industriali polo petrolchimico - biofiltro - Italia

Treatment of odour and VOC emissions produced by the industrial wastewater treatment plants

Impianto compostaggio - biofiltro - Italia

Treatment of odour and VOC emissions produced by the municipal solid waste treatment plants

Impianto trattamento rifiuti - biofiltro - Italia

Aerobic fermentation systems for the municipal solid waste treatment plants

Impianto trattamento rifiuti speciali - torre di lavaggio chimica - Italia

Treatment of odour and VOC emissions produced by the industrial waste treatment plants

Impianto produzione energia da biomassa - biofiltri e umidificatori - Italia

Treatment of odour and VOC emissions produced by the food industry and its wastes treatment

Impianto di aspirazione industriale - estrazione dell'aria - Spagna

Dust removal plants for glass, brick, gypsum, aggregates and asphalt industries

Impianto aspirazione industria siderurgica - impianto aspirazione - Italia

Aspiration and treatment plants for dusts and fumes produced in foundries, steel industry, faucets and fittings factories and mechanical industries

Processo di trattamento galvanico - impianto aspirazone fumi - Italia

Treatment of emissions from surface treatment processes

Impianto biomasse zootecniche - biofiltri - Italia

Treatment of odour and VOC emissions in industrial processes

Impianto trattamento rifiuti speciali - biotrickling e impianto estrazione aria a servizio - Italia

Special plants

Impianto rendering campionamenti olfattometrici - biofiltro - Spagna

Environmental consultancy

Biological Systems (for air treatment)


Absorbers (washing towers)

Adsorbers (air depuration by activated carbon)

Wet dust removal systems

Dry dust removal systems

Impianto trattamento rifiuti – cabina afonica – Italia

Industrial ventilation



Impianti Compostaggio - Composting plant

Composting plants

Special plants



Biotrickling technology with shells suitable for the treatment of acid gases (400 ppm H2S) and VOC (2 grC / m3) in the industrial field (painting, foundries, food industry, etc.)



Peat-based product designed for biofiltration



Biological system on recycled rubber support for the removal of high concentrations of H2S (5000 ppm) and siloxanes from biogas


“Air Clean offers proven, proprietary clean air bio-technologies, which provide best-in-class process performance with the lowest utility and life cycle costs”

The MónaShell® biofiltration system is a proven and costeffective alternative to chemical scrubbing or carbon adsorption, designed like a Biotrickling system yet incorporating many benefits of traditional biofilters by utilizing up-cycled recovered material generated from the food industry.
The shell-based media is sustainable and renewable with the ability to maintain a neutral pH within the biofilter. This ensures optimal odour treatment performance across a broad range of odor producing compounds, while simplifying operation and
enhancing system reliability.
MónaShell® technology in a single stage configuration was originally designed for odour removal emitted from wastewater treatment plant processes, lift and pump stations, and sludge holding tanks. The introduction of recirculation technology and
double pass treatment allowed to extend its use to high levels of H2S and VOC including those generated by industrial applications. When it is used in combination with our CrumRubber™ technology it allows to remove up to 4000 ppm H2S.




Concentration Range

Removal Efficiency


1000 – 40.000.000 OUE

99.9% +


0-2000 ppm

(4000 ppm max)

99.9% +


0 – 1000 mgC/m3

90 - 95%

Reduced Sulphur Compounds

0 -500 ppm



0 - 50 ppm

98% +


0 -100 ppm


Typical design contact times

18 to 90 seconds

Water Consumption per kg H2S

0.4 m3

Typical Media Life

5 years ++

Typical Pressure Drop per m3 

50 - 250 pa

Comments on Selection of Technology

This technology was developed for high levels of H2S and VOC’s

Comments on Life Cycle Cost

Long life cycle costs even for high VOC and  H2S emissions when benchmarked against chemical scrubbers activated carbon and thermal oxidisers


Treats high and variable concentrations of H2
and a broader range of organic sulphides

Up to 67% footprint reduction compared to conventional biofilters due to higher efficiencies, reduced contact time, and deeper filter bed

No short circuiting or channelling through media

High porosity, low pressure drop, low energy requirement

Lower water consumption: 
water recirculation conserves H2O

No nutrient addition



Low pressure drop, low energy costs

Lower media replacement costs

Eliminates need for chemicals

Sustainable process uses naturally occurring recovered media

Effective on highly variable inlet conditions

Lower operating and maintenance costs




Low energy

Low CO2  footprint

Able to treat high variable concentration of VOC



Registered office: Via Ugo Bassi 14 - 20090 Trezzano sul Naviglio (MI) - Italy
Tel. +39 02 9311989 - Fax +39 02 93504303 - P.iva 10604210152
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