UV Waterworks 2.0 Answers to Ten Commonly Asked Questions about the design, operation, and economics Ashok Gadgil November 1995 1. Including use for washing pots and pans, and use in cooking etc., Indian health ministry estimates 7 liters per person per day as more than adequate.
Transmittance decreases with increasing turbidity and dissolved salts.
The larger the extinction coefficient, the faster the UV intensity gets extinguished as it travels through the water. Water with a large extinction coefficient for UV will protect microorganisms farthest away from the UV light source from being inactivated. We recommend routine cleaning and inspection every 6 months just to ensure smooth operation year round. Then the lamp could be replaced every other maintenance visit, or every fourth visit. In some designs already on the market, the UV lamp is enclosed in a Teflon or quartz envelope and the whole assembly is immersed in the water being treated.