Chlorine Vs. UV Ultraviolet Water Purification
Major soft drinks groups use Ultra Violet disinfection to provide micro-biologically pure water, which helps add shelf life to their products. Soft drinks and bottled water producers build their reputations around the purity of their products, emphasizing the fact that they’re natural.
UV is the only known effective method of treating bottled water without compromising marketing assets.
Minute contaminants in rinse water, including microorganisms and total organic compounds (TOC), can adversely affect yields and must be removed by the water purification system. In order to meet these demands, UV technology for disinfection and organics removal is often used in the water treatment scheme.
UV offers protection without the use of chemicals, and with recent developments in high-energy UV technology, higher quality standards are now achievable in a more simplified, efficient and cost-effective manner.
A nice and in-depth article can be seen for everything You Need to Know about Ultraviolet Water Purification by John Mone.
Chlorine Versus Ultraviolet Purification
As a tertiary treatment for water, chlorination offers the advantage of continued disinfection after initial treatment, since some chlorine remains in the water with residual germ fighting action.
The ultraviolet method, however, has none of the following disadvantages of chlorine:
- UV treatment needs only to be set to work. Chlorine treatment requires operation attention.
- In small installations, when chlorine gas is liberated from a chlorine cylinder or moistened crystals or pellets, the fumes are extremely dangerous and may even be lethal. Ultra violet has none of these problems.
- Chlorine itself is a highly corrosive and toxic chemical. UV not.
- UV adds nothing to the water. Chlorine is an additive material, and it may impart an undesirable taste to the water and a decrease in pH.
- While UV is a safe method of purification, chlorine is chemically active and can react with foreign ingredients (e.g., as found in industrial waste-water) to form toxic compounds, a matter of increasing concern to the Federal Government and to many states and municipalities.
- In addition to all of the above, chlorine can combine with ammonia to form chloramine which is toxic to fish even at low concentration, it may also combine with phenol to form “clorophenols”, another dangerously toxic compound.
To some it all up: ultra violet water purification is the only effective method of treating bottled water without compromising marketing assets.