Resulting from the enhanced micro-flocculation effect of ozone the filtration rates can be increased, smaller filtration beds used and even the chemical consumption lowered.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/ozone-advancement-drinking-water-treatment-technology
[2] http://admin.indiaenvironmentportal.org.in/category/journal/everything-about-water
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-treatment-technology
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ozone
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply