Alternative solutions

Alternative solutions are offered in many countries. We hereby explain what the alternative solutions are and in which ways Aerox can offer you a practical choise.

Wash towers / Scrubbers

Good alternative to wash out the odour molecules especially applicable in case of easily in water soluable molecules and higher organic concentrations. Adding chemicals like acids can improve the efficiency. Disadvantage: the usage and disposal of waste water and chemicals and required space and the system might not removing difficult in water soluable molecules like smelling oil or fatty molecules sufficiently. The combination with an Aerox-Injector can result in a very efficient two –steps odour control system.

Biofilter

Good alternative for continuously operating processes and higher organic concentrations. All smelling air stream is treated at low air velocity and due to this huge space area will be required compared to the small Aerox-Injector. Also different is that the Aerox units can be switched on and off easily (automatically / remote) or run at lower capacity to save energy / money in case of less smelling production runs.

Adsorption / chemisorption

Activated carbon can reduce the odour by physical adsorption or in case of applying impregnated carbon by chemisorption.
However a weak point always is the negative influence of the relative humidity of the air to be treated, also dust from the process air can pollute the carbon particles and the lifetime will be limited and unknown.

Cold plasma or Non thermal plasma (NTP) generated inside the smelling air stream
Good alternative, the measured odour reduction efficiencies are fully comparable with the achieved results applying the much more compact Aerox-Injector technology. Since Aerox is injecting into the smelling air stream the Aerox units always have same small size independent from air stream and Aerox units will not be polluted in case of sticky or dusty air flows. In some industries the injection priciple is considered as a more safe system since the cold plasma source is placed outside the air stream.

Incinerator

From the technical point of view the best odour control system, since all odour is burned completely, while for instance the Aerox-Injector partly oxidizes the odour at low temperature and achieves 60 –95% efficiency and never the 100%.
However, solving odour problems by incineratiuon consumes too much energy to heat up and in general is too expensive technology for odour control, since 100% reduction not required to solve the complaints.

Ozone generators

Alternative technology for odour control, consuming more energy and emitting remaining ozone. Aerox company started some 12 – 14 years ago with an ozone generator but found out that ozone is less active and requires more contact time and higher stacks for effective odour reduction and therefore Aerox company developed the Aerox-Injector generating the very fast reacting oxygen radicals and water vapour radicals, based on cold plasma or NTP.