There are more than 2,000 installations worldwide that use ozone to treat drinking water. Ozone is an effective disinfectant for treating municipal and industrial wastewater, enabling the end user to meet EPA pre-treatment standards.
An analysis of the raw well water (Table 1) shows a pH of 7.9 and 30 color units with >20 mg/L hydrogen sulfide, 5.6 mg/L iron and 0.6 mg/L manganese. Odor was detected at 10 threshold odor number (TON), indicative of the high hydrogen sulfide levels. To meet these water problems head-on, the homeowners formed the Bassi Ranch Mutual Water Co. in 1992.
An overview of an American Water Works Association Research Foundation project.
This paper summarizes ozonation and by-product formation chemistry as well as ways to control by-product formation.
In this article, some of the many reasons ozone would be chosen over other oxidants such as chlorine are discussed. If you have a reason to apply ozone as part of your water treatment project, you may be required to conduct a pilot study prior to installation of the equipment.
In order to comply with more stringent government regulations, one plant converted from chlorine to ozone treatment.
A three-year test of ozone and direct filtration so convinced the Altoona City Authority (ACA) of its merits that the central Pennsylvania water authority is now installing the technology at six new treatment plants and will retrofit another by 1999.
Products at Work
Dealers of water enhancement products are increasing ozone sales rapidly, while finding sales of chemical-oriented products are less attractive to their clients. The advantages of ozonated water are becoming better understood and easier to sell. As consumers demand a better water supply, the use of chemicals will continue to diminish while the use of ozone increases.
As consumers demand a better water supply, the use of chemicals may diminish while the use of ozone increases
When a town meeting in New Castle, New York, prompted local government officials to take citizen complaints about water quality seriously, they initiated a lengthy multi-step project to fix the problems. They could not have known then, in the early '80s, that their decision to proceed was timely. The water system improvement program they embarked upon anticipated some of the key regulatory requirements put in place years later, and solved problems of quality and quantity that arose as a result of the growth and development of the town and its surroundings.
A New York State town developed a water treatment plant which uses dissolved air flotation and ozone disinfection to ensure meeting anticipated tighter regulations