The US EPA is considering the use of advanced oxidation processes to remove a DDT derivative found in St. Louis wells. The para-chlorobenzene sulfonic acid, or pCBSA, that was discovered three years ago can be treated. the compound is highly mobile in water and resistant to natural degradation.
CH2M Hill, a national environmental engineering firm working for the US EPA, believes one option for treating the water is advanced oxidation. The technology would be designed to help cleanup the plant site but only in combination with other remediation methods because there are so many different types of toxic chemicals on the 52-acre parcel. The EPA is conducting a feasibility study that will determine what cleanup methods and is due to be released in September.
We like to post information on major cities that are adding ozone as part of their drinking water treatment program. Once such project is is the proposed $108.5 million upgrade to Tampa’s potable water treatment facilities. Work there, which would begin in February 2010, would convert purification processes from chlorine to liquid ammonia to help reduce the risk of releasing dangerous gases into the environment. It also would add ozone generators that would decrease the need for other treatment chemicals, and increase security at the city’s seven water production and distribution facilities. As the Tampa case shows, ozone offers the potential to improve the security of drinking water plants by reducing the use of chlorine gas as well as saving money on other treatment chemicals.
We occassionally get calls from home based wine makers asking about an ozone system. Ozone is an excellent tool for winery sanitation. Unfortunately is not economical for producers making less thanfifty barrels of wine.
Commercial wineries produce degassed ozonated water to rinse tanks, barrels, drains, etc. The primary application is disinfection of surfaces that come in contact with the ozone dissolved in the water. After acting on the micro organisms or oxidizable organic molecules ozone breaks down to oxygen. This makes it a very clean disinfectant.
For the home wine maker, the cost of the ozone machines outweighs the benefits. Since there are many good sanitizers available to the small-scale winemaker, it is difficult to justify the cost of an ozone generator. You can try mimicking ozone’s oxidizing power by using a hydrogen-peroxide producing powder, sometimes sold in the laundry section of supermarkets or increasingly through winemaking supply retailers. When dissolved in water, these powders form a strong base so you’ll have to make sure you do a citric acid wash and then clean water rinse after applying.
LOS ANGELES – The U.S. Environmental Protection Agency is honoring the Orange County Water District for a major water reclamation project.
Wastewater that would have been discharged to the ocean is now recovered for use within the district. the water is treated using microfiltration, reverse osmosis and advanced oxidation processes. The water is then pumped into injection wells where the it percolates into the ground and blends with Orange County’s other sources of groundwater.
The Orange County Water District supplies water to more than 20 cities and water agencies, serving more than 2.3 million Orange County residents. Orange County should be congratulated for developing sustainable water resources for their residents.
If you could afford any level of water treatment, which type of water treatment would you choose. Well apparently the super rich select ozone. Trinity Yachts, LLC, located in Gulfport, MS, has become one of the world’s elite US-based builders of custom super yachts. In the Spring of 2008, they launched Trinity Hull Number T036, Destination Foxharb’r Too.With an interior created by Patrick Knowles Design, this 161-foot super yacht with a 28-foot beam, is the culmination of a proud tradition of high-quality craftsmanship and design, state-of-the-art engineering and construction, and cutting-edge technology. Among the many amenities found on board is an ozone water treatment system that is both effective and environmentally friendly.
Ozone is increasingly finding applications in a variety of water treatment applications beyond super yachts. Spartan Environmental Technologies supplies ozone water treatment systems for commercial and industrial applications.
Although Spartan Environmental Technologies does not sell ozone generators for residential use, we are occasionally contact by individuals interested in buying ozone generators for odor control in the home. We were prompted to discuss this subject again by a recent new release from a market research firm publishing a study on air fresheners. The study was primarily about consumer products such as sented candles and such, but they briefly touched on the topic of indoor air pollution control using ozone generators.
The EPA position on ozone generators is that to actualy remove odors, the concentration of ozone in the home would have to exceed safe levels. The Occupational Health and Safety Administration (OHSA) has established the safe levels for long term exposure to ozone in teh air to less than o.1 part per million or 100 parts per billion. The EPA found that some home ozone generators far exceeded this limit, putting the people in the home at risk.
Ozone can cause lung problems. It is a main component of “smog” and is controlled as an air pollutant. Some consumers, not aware of the dangers, have exposed themselves to dangerous levels of ozone.
Since most consumers can not measure ozone in their home, they should not use ozone generators to remove odors. Professional contractors are available that can employ ozone generators to clean the air in a home, but after the home owners have left the house. Then after insuring the ozone levels are safe informing the home owner that it is safe to return. Some of these systems have automatic ozone destruct systems that remove the ozone after it is generated to eliminate the ozone after it has done its job. These systems should only be used by trained professionals.