Uv Light For Drinking Water Disinfection

A low pressure mercury arc lamp resembling a fluorescent lamp produces the uv light in the range of 254 manometers nm.

Uv light for drinking water disinfection. Water that is not filtered can contain iron manganese and other particles that can either absorb or scatter uv light reducing the effectiveness of the disinfection system. Ispring 7 stage under sink reverse osmosis ro drinking water filtration system with alkaline filter and uv filter 75gpd. It is a reliable means of disinfection which involves exposing contaminated water to radiation from uv light. For years though water utility companies had shown increasing interest in a different type of disinfection lamp that was polychromatic meaning it emitted uv light at multiple different.

Uv is a proven and safe alternative for primary disinfection as it is free of the harmful by products associated with chemical disinfection. Pelican water 7 gpm uv whole house water treatment and disinfection system model thd puv 7 594 15. Using ultraviolet uv light for drinking water disinfection and wastewater disinfection dates back to 1910. Uvgi is used in a variety of applications such as food air and water purification.

Ultraviolet germicidal irradiation uvgi is a disinfection method that uses short wavelength ultraviolet ultraviolet c or uv c light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their dna leaving them unable to perform vital cellular functions. Microorganisms that are able to pass through protected by shadows created by dirt debris or other microorganisms may be able to survive treatment. Uv a uv b and uv c and it is this last region the shortwave uv c that has germicidal properties for disinfection. Express water ultraviolet water filter uv light purifier 12 inch housing with 10 in.

Portable units that deliver a measured dose of uv light are effective to disinfect small. Now that the long term 2 enhanced surface water treatment rule lt2eswtr or the rule will become effective march 6 many drinking water utilities are looking at uv disinfection as the best available technology for meeting their cryptosporidium inactivation requirements and goals. Uv lamps are available in wattages from 4w up to 1000w allowing you to design disinfection systems for small liters min up to very large municipal installations that use several hundred lamps. Bottled water is a convenient solution but the plastic bottles create an ecological problem.

Principles of uv disinfection home water treatment uv radiation has three wavelength zones. Uv systems can be used to disinfect water in a wide variety of applications including drinking water wastewater process water swimming pools and ponds. Bulb under sink and ro. Heading to remote places to camp or hike or staying in locations with unknown water quality may need to disinfect their drinking water.