UV Radiation in Water Treatment
By: Noah Raymond
UV destroys germs by causing a change in their DNA makeup that destroys them and causes them to stop multiplying. Different germs can tolerate different amounts of UV light which means that different intensities must be used. UV light can only be effective it it hits its target so this has to be a later step. UV works less when the water is between 2 and 40 degrees Celsius, so it must come before the hot and cold part of the water treatment process. It has many advantages over other water treatment processes because it doesn't alter the taste of the water, it is very fast, economical, and is more effective than chlorine. There are a few drawbacks like this system is not designed to run continuously, the lamp needs to warm up, and the lamp loses effectiveness.