germicidal lamp Articles | Environmental XPRT

Polaris Scientific UV Series Now UVA Series ; Product Line Modification Bulletin

Polaris Scientific is proud to announce that our UV Series line of sterilization systems is now in the process of being replaced by our new UVA Series line which has the added benet of Polaris Scientics New Patented 4 Pin Germicidal Lamp design. The new patented staggered 4 Pin design will be exclusive to Polaris UV customers and will not be available elsewhere. This new lamp pin configuration ...

Oct. 13, 2018

By WECO Filters

Spectral distribution of uv light during aging of medium pressure UV lamps

As part of a project to validate a UV reactor for disinfection of drinking water, the germicidal output of four medium pressure lamps housed in a continuously operating reactor was followed as a function of time. Spectra were measured monthly and were used in conjunction with radiometer readings to calculate germicidal fluence rates (using DNA absorbance weighting) at the radiometer sensor ...

Jan. 1, 2007

By Degremont Technologies - a subsidiary of Suez Environnement

Computational fluid dynamics modelling of UR–UVGI lamp effectiveness to promote disinfection of airborne microorganisms

This paper focuses on using computational fluid dynamics (CFD) modelling methods to study the effectiveness of upper–room ultraviolet germicidal irradiation (UR–UVGI) lamps in healthcare facilities. This work develops and uses simplifications for boundary conditions in CFD, while details of UR–UVGI lamps and microorganism characteristics were obtained from existing experimental ...

Dec. 4, 2012

By Inderscience Publishers

UV Photolysis of Nitrate: Effects of Natural Organic Matter and Dissolved Inorganic Carbon and Implications for UV Water Disinfection

Nitrite (NO2-) formation during ultraviolet (UV) photolysis of nitrate was studied as a function of pH and natural organic matter (NOM) concentration to determine water-quality effects on quantum yields and overall formation potential during UV disinfection of drinking water with polychromatic, medium-pressure (MP) Hg lamps. Quantum yields measured at 228 nm are approximately 2 times higher than ...

Jun. 21, 2007

By Hanovia Ltd - a Halma Company

Effects of UVGI filtration on indoor air contaminants and HVAC systems

Proprietary High Intensity UVC (Germicidal 254 nm) Mercury Vapor Quartz Lamps designed to prevent and destroy mold and other microbial growth on the A/C coil and eliminate biological contaminants and chemicals in the air. Ultraviolet light destroy biological & chemical contaminants TOMIES proprietary High-Intensity Mercury Vapor Quartz Lamps produce UVC and UVV (both wavelengths are fused ...

Mar. 23, 2010

By TOMI Environmental Solutions, Inc.

Common Types of UV lamps for Ultraviolet Disinfection (UV Lamps) for Chemical Free Water Disinfection

Types of Ultraviolet Disinfection (UV) Lamps for Chemical Free Water & Wastewater Treatment When it comes to water and wastewater treatment systems, operational and performance variation will come from different components. This variance can come from the differences treatment processes deployed, whether chemicals are utilized or how much power the treatment processes require. With many ...

Feb. 27, 2020

By Genesis Water Technologies, Inc.

Common Types of UV Lamps for Ultraviolet Disinfection of Water & Wastewater

When it comes to water and wastewater treatment systems, operational and performance variation will come from different components. This variance can come from the differences treatment processes deployed, whether chemicals are utilized or how much power the treatment processes require. With many treatment systems, there is much consideration given to a particular central component akin to the ...

Feb. 27, 2020

By Genesis Water Technologies, Inc.

What You Need To Know About Hydroxyl Generators

http://www.randrmagonline.com/articles/86169-what-you-need-to-know-about-hydroxyl-generators The main benefit of using a true hydroxyl generator is that they are safe to use in occupied areas for deodorization purposes. Insurance companies do not have to cover a homeowner’s hotels or meals. Business owners do not have to shut down and loose precious business. If people and animals can ...

Aug. 6, 2016

By International Ozone Technologies Group, Inc.

Aging evaluation of medium-pressure mercury lamps under typical operating conditions for drinking water disinfection applications

Little is known regarding how medium pressure (MP) ultraviolet (UV) lamps age under typical operating conditions, yet a number of assumptions regarding lamp aging are utilized when UV reactors are validated, often as unfounded approximations. This study was designed to evaluate the aging of MP UV lamps utilized with a closed-vessel UV reactor technology for drinking water disinfection ...

Jan. 1, 2007

By Degremont Technologies - a subsidiary of Suez Environnement

How UV technology helps your entire HVAC system

What Ultraviolet Light Ultraviolet (UV) light is one form of electromagnetic energy produced naturally by the sun. UV is a spectrum of light just below the visible light and it is split into four distinct spectral areas – Vacuum UV or UVV (100 to 200 nm), UVC (200 to 280 nm), UVB (280 to 315 nm) and UVA (315 to 400 nm). ...

Jul. 21, 2020

By Aluminox SA

Subscribe to our eBulletins