Due to the variety of odours / nuisance gases that are present in the Wastewater Treatment Industry ensuring your odour removal method is suitable for your application is vital.
Selecting the right filter for the job will save time and prevent potentially expensive capital outlay and unnecessary running costs. A Biofilter may be ideally suited to high concentration, persistent odour removal but might be considered excessive and unsuitable for a tank which occasionally vents to atmosphere during filling.
Activated Carbon Filters are best utilised to remove intermittent odours. For example, on a pumping station or sludge tank as opposed to an aeration bed.
Carbon Filters should be sized on the flow rate and odour level. For more offensive odours you would want a larger filter with longer contact time with the carbon to ensure effective removal.
The longer the air is in contact with the carbon the higher the levels of odour removal. EMCEL Filters Ltd manufacture carbon cells with loose fill carbon, utilising 60 plus grades for various applications, to allow for a greater surface area for adsorption to occur. Our unique internal honeycomb construction guarantees even filling and prevents settling. This ensures no bypass through the filter and enhances odour capture, increasing the efficiency of the filter.
Using your carbon filter in optimal conditions will help maintain the high design performance throughout its service life. EMCEL recommends controlling the inlet air to between 20-25ºC and the relative humidity to between 40 -60%. The higher the temperature, the greater the tendency for volatile odours to desorb from the carbon. The higher the humidity, the higher the risk of the carbon being subject to moisture deposition, which would hamper the adsorption of odours.
