Ozone System in Lap Pool and Spa: exceptional IEQ Our project is a sports facility with a 6-lane, 25m swimming pool and 2 spas. Instead of the conventional chlorine system, we are using an ozone system to treat the water. The Ozone system has the following advantage: - Destroys bacteria, mold and mildew - Eliminates spores, yeasts, fungus and inactivates viruses - Aids the removal of minerals such as iron and manganese - Water is softer and has neutral pH - Leaves no unpleasant chemical or smell, no chloramines build-up, the by-products of ozone are heat and pure oxygen - No irritation to the eyes, nasal passages or throat - Will not cause dry skin, bleached hair or faded swimwear - Reduce chlorine consumption to a minimum, saving money on maintenance, and avoid storing such toxic chemical on site. To summarize, the system reduces the use of chlorine greatly (50-75% depending on splash limit). Unlike chlorine, ozone leaves no unpleasant odors or residual chemicals in the pool and spas. It eliminates the problems of red and irritated eyes, dry skin, faded swim wear and other problems associated with chlorine. We believe that this system has significantly increased the indoor environment quality of the project, especially when the pool and spas are frequently used being in a sports facility instead of a private residence. And a large amount of occupants will be benefited. Therefore, we would like to use this for one of our Innovation and Design Credits. Please advice on the feasibility.
The proposed strategy, if incorporated properly, may warrant an innovation credit. The use of an ozonation system that is properly sized and integrated into the swimming pool treatment system will allow ozone to act as the primary oxidizer and disinfectant. Since there is no uniform standard which has been established for ozonation of pools, ozone design criteria for disinfection in the United States is based primarily around US EPA Drinking Water Guidelines. Dose rate values between .4 mg-O3/l are normally cited and .8 mg-O3/l is commonly used. While LEED encourage approaches that reduce the use of toxic chemicals, additional information is required to provide a complete assessment of credit achievement in this case. Please describe limited reduction of chlorine (e.g., state if regulations require a minimum level of chlorine), and provide detailed explanation and proof of substantial environmental benefits (quantified as much as possible). See IDc1.1 CIR review dated 5/21/2003 for further guidance on this issue including appropriate documentation. Applicable Internationally.