Hydrogen sulphide (H2S) is a gas which if dissolved in water smells like rotten eggs. The easiest way to remove the smell is to pass the water through carbon where the H2S is adsorbed on to the carbon. In conventional carbon filters the carbon gets saturated and regularly needs replacing. In this novel system the H2S is sprayed through a layer of air held in the top of the vessel oxidising the gas vastly improving the capacity of the carbon reducing the need and cost of replacement carbon.

This system uses a 13" x 54" vessel which houses 15 litres of media.

The service flow rate is 800 litres per hour and the back wash flow rate 1200 litres per hour.