Email 

Tel: 01600 860344

Ozone purification   

Ozone is an extremely powerful oxidising agent, a very reactive but odourless gas that occurs naturally in the earth’s atmosphere. Due to the unstable nature of the ozone molecule it reacts readily with contaminates in water, it cannot therefore be stored and has to be produced where and when it is needed. 

Ozone purifies the water by breaking up organic contaminates and converting iron, manganese and hydrogen sulphide into an insoluble form that can then be filtered out. Ozone also destroys bacteria, viruses and protozoa, and has been used since the last century by over 1000 municipal authorities worldwide to produce high quality drinking water. While ozone is a highly effective disinfectant, it quickly reverts back to oxygen when it decomposes, making ozone safe to use and environmentally friendly.   Until now, ozone has been too expensive to produce for use on single dwellings or small community private water supplies where demand is intermittent. Now modern technology has made it available to all in a compact and low cost package.

  Ozone can also be used for maintaining the quality of stored water, for treatment of effluent prior to discharge and even odour removal and sterilisation of air.  

The ozone layer is found in the uppermost part of the earth’s atmosphere between 20,000 and 30,000 metres and provides an important barrier to ultraviolet radiation from the sun. Ozone generators do not adversely affect the ozone layer since they manufacture the ozone used to purify water from oxygen in the atmosphere. Local depletion of oxygen levels does not occur due to the relatively low volumes involved.

The manufactured ozone is drawn into the contaminated water flow by high efficiency venturi, after which it dissolves into the water as it passes into a contact assembly. In the contact assembly the ozone reacts with the contaminants in the water before it flows onto a multi-media filter where all the solid matter is removed.  

The down stream filter unit contains a proven blend of media that remove particulate matter, adjust the pH as necessary and ‘polish’ out any remaining iron or manganese giving clean, pure water with no harmful chemical residues.  

Ozone systems require minimal maintenance and draw very little power, less than 250 Watts for a simple generator and air preparation unit. The down stream filter system will require regular but simple servicing about every 6 months to keep it in peak condition.

 Ozone generators need to be individually sized for each application. They need to deal with all the water contaminates at the required flow rate. The amount of ozone needed will depend on the contaminants in the water, their ratios to each other and the pH and oxygen demand of the raw water. An approximate indication of the amount of ozone needed can be found from the levels of iron, manganese and hydrogen sulphide in an analysis of the raw water.

What to do next. Call for advice or to arrange a site visit . Tel 01600 860 344