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Ozone Gas For Odor Control
Many food processors generate extracted air that contains strong odors which, if released untreated could cause complaints from local residents. In most cases such complaints would inevitably lead to orders from the local authorities to eliminate the odors or face closure or at least a heavy restriction on production. The most common systems for odor removal / control include: · Carbon Filtration
· Wet Scrubbing Both systems are cumbersome, produce chemical wastes as by-products, can cause environmental problems and have relatively high running costs. For example carbon filters need regular replacement of the activated carbon filter elements, these elements are considered “hazardous waste” and need to be disposed of accordingly. As an example, whilst the installation costs of a carbon filtration system are around 50% of a comparable ozone based installation this cost is repeated approximately every 6 months as a new set of filter units is required. The other problem with filtration is that almost as soon as they are commissioned the performance starts to drop off as the filters become more and more saturated with filtered material. An ozone-based system by contrast requires only minimal maintenance and a 13 amp power supply after installation; performance remains constant and predictable. A wet scrubbing system will cost at least typically 10 times more to install and will also consume considerable amounts of chemicals per annum. Ozone gas, produced from air by an ozone generator at the point of use will react with and inactivate as wide a range of odors as traditional systems. Overall an ozone-based system has been shown to have the following advantages: · Very effective odor destruction
· Wide range of odors tackled
· Low installation costs
· No need for expensive chemicals
· No residues left over for disposal
· Low maintenance
· Low footprint of equipment
· Easy to retrofit to existing extract ducting For these reasons ozone-based odor control systems are increasingly being used to replace conventional systems in many industries worldwide. However to succeed such systems must be designed and installed by experts in ozone and odor control with a track record in this field. There is a range of different sized units available worldwide, with ozone outputs (ranging from 6 to 360gm/hour or greater) that can be combined with various types of control systems and pipe-work to suit every application.
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