THE EFFECT OF PREOZONATION ON MICROORGANISM AND PARTICLE REMOVAL

The Neuilly-sur-Marne (France) treatment plant treats raw water of particularly poor bacteriological quality and preozonation has been tested in a pilot scale study to improve the filtered water quality to comply with new european regulations on treated water. Preozonation directly on the raw water and on the settled water can provide a significant improvement in filtered water, both for particles and coliforms.