Biological Waste-Gas Treatment

High-performance biological waste-gas treatment plants are required to fulfil several tasks:

• Rapid adaptation of the microorganisms to the hazardous organic compounds (chlorinated hydrocarbons, amines, mercaptane, etc.),
• Neutralisation of the biologically formed acids HCl, HNO3 or H2SO4,
• Good supply of the biomass with nutrients,
• At low energy consumption.

These requirements can be readily met with the support of moder

• TRICKLE-BED REACTORS, through
• ADAPTED, SPECIAL BIOMASS,
• IMMOBILISED with adsorbing, porous LEVAPOR carriers

Adsorbing, porous LEVAPOR-carriers measuring 25 x 25 x2 5 mm

• Weigh dry only approx. 30 bis 40 kg/m³,
• Absorb over 250 wt.% water (very important for bioactivity!),
• Suffer no loss of pressure,
• Rapidly bind special organisms and the substances to be degraded,
• Rapidly achieve maximum performance very quickly,
• Last for over 10 years.

In a trickle-bed reactor equipped with the LEVAPOR carrier, a rapid and intensive exchange of substances takes place, in which the pH value can be slightly adjusted and the biomass can fed with nutrients.

Functioning of the Bio-Trickle-Bed Reactor

The exhaust gas is fed into the lower section of the trickle-bed reactor using a ventilator and then through the LEVAPOR filter bed which has been colonised with highly active special microorganisms. In the process, the gaseous pollutants on the surface of the carriers is adsorbed and immediately biologically mineralised (degraded) by the microorganisms.