Ultraviolet (UV) light is an effective physical treatment alternative to chlorine that will not create by-products or discharge a chemical residual which will impact the environment.
UV provides effective inactivation of microorganisms through a physical process. The retention time required to achieve inactivation is usually in the range of a few seconds which reduces the physical footprint and capital costs of installation for UV systems.
Chlorine Treatment | UV Treatment | |
No Treatment By-products (DBP’s) |
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No Chemical Residue |
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No Chemical Spill Risk |
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Effective Against Cryptosporidium and Giardia |
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Well-Suited for Changing Regulations |
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UV treatment uses a fundamentally different process than chemical-based systems. Clarified wastewater, typically secondary effluent, is directed through open channels where it flows past a series of ultraviolet lights that are submerged in the effluent. As microorganisms in the water flow past the array of UV lamps, they are exposed to ultraviolet light at a wavelength of typically 254 nm (inactivation zone). These powerful photons in the UV-C range alter the genomic structure of microbes rendering the microbe unable to reproduce and therefore becomes non-infectious.
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Municipal UV water treatment systems are simple and straightforward to operate.
Many water providers are turning to reuse as the solution to their water supply and quality challenges.
UV light provides rapid, effective inactivation of microorganisms through a physical process.
