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A novel method for removing odors SNIP

unpleasant odors arising from the treatment plants or pumping stations are usually treated with activated carbon filters or scrubbers using sodium hypochlorite and soda, two systematic as that which traditionally work very well but entail high maintenance costs.

This novel biological process consists of a column packed with a synthetic filling polyurethane foam. The contaminated air passes through the upstream fill. In turn, a stream of water falls as rain on the filler material so that the compounds responsible for odors pass from air to water thus being available for microorganisms.

Microorganisms grow over the filling and use hydrogen sulfide (main compound responsible for the odor) as a source of energy. The water is recirculated constantly from the team's base to the top of the biofilter. In this way we achieve clean air flow through a biological process that consumes only small amount of sodium hydroxide to control pH. Through this process, the elimination rate is quite high, and the researchers posed the procedure suggest an elimination rate of 98% to 99%, and allegedly caused no significant cost to operate.

However, the invention of the University of Cadiz is focused on improving the inoculation procedure used in this and other biofiltration systems. The novelty lies in working with shortlisted two inbred strains, so they do a mixed culture with both microorganisms and the booting is achieved throughout the system, which is usually very slow, virtually immediately. 24 or 48 hours have high removal rates, as specified in UCA members.

Source: Universidad de Cádiz