air disinfection Articles

  • The Application of Ultraviolet Germicidal Irradiation to Control Transmission of Airborne Disease: Bioterrorism Countermeasure

    Synopsis Bioterrorism is an area of increasing public health concern. The intent of this article is to review the air cleansing technologies available to protect building occupants from the intentional release of bioterror agents into congregate spaces (such as offices, schools, auditoriums, and transportation centers), as well as through outside air intakes and by way of recirculation air ...


    By E-CO

  • UVC: Florida hospital puts HVAC maintenance under a new light

    HVAC system downtime during coil cleaning can compromise humidity and temperature control, potentially leading to air quality or comfort problems. Florida Hospital has found that high-output ultraviolet-C lights installed in the AHUs reduce or eliminate coil- cleaning programs — yielding ongoing energy savings, a reduction in HVAC system maintenance, and the elimination of cleaning ...


    By E-CO

  • UV Light Treatment for HVAC Systems

    Ultraviolet (UV) light can be applied to support numerous applications in a broad range of industries. In commercial paint spray booths and label manufacturing plants, UV lamps are used to streamline paint jobs and the printing of logos. Outside of such practices, the light source may also be utilized to eradicate harmful, disease-causing bacteria. Systems that rely on the light’s ability ...


    By Larson Electronics LLC

  • DBPs in a chlorinated indoor swimming pool: occurrences and modeling

    Swimming pool water contains higher chlorine residual and is maintained at a higher temperature than tap water. It constitutes environments with high levels of disinfection byproducts (DBPs) in water and air due to continuous disinfection and constant organic loading from the bathers. Exposure to DBPs is inevitable for any bather or trainer while such exposure can have cancer and non-cancer ...


    By IWA Publishing

  • Application of an optimized system for the well-defined exposure of human lung cells to trichloramine and indoor pool air

    In this study an in vitro exposure test to investigate toxicological effects of the volatile disinfection by-product trichloramine and of real indoor pool air was established. For this purpose a set-up to generate a well-defined, clean gas stream of trichloramine was combined with biotests. Human alveolar epithelial lung cells of the cell line A-549 were exposed in a CULTEX® device with ...


    By IWA Publishing

  • Use of CFD Modelling to Optimise the Design of Upper-room UVGI Disinfection Systems for Ventilated Rooms

    AbstractThe installation of upper-room ultraviolet germicidal irradiation (UVGI) devices in ventilated rooms has the potential to reduce transmission of infections by an airborne route. However, the performance of such devices is dependant on several factors including the location of the lamp and the ventilation airflow in the room. This study uses a CFD model to evaluate the performance of UVGI ...


    By SAGE Publications Ltd

  • Effects of UV Ozone for air room and deep cleaning disinfection purposes Version:1.0

    According to the EPA and American Medical Association (AMA), studies indicate that indoor levels of many pollutants may be 25 times and occasionally more than 200 times higher than outdoor levels. While older buildings present the issue of a large buildup of contaminants over time, today’s buildings are built so air tight that the health risks may be even greater. According to the EPA, ...

  • FF System - Compact WWTP

    Our “FF System” is the perfect solution created by our engineers to guarantee a flexible and long lasting treatment unit which is ready use due to the fact that it is completely pre-assembled. This compact system includes all the required unit operations such as screening, dissolved air flotation, biological oxidation, sedimentation and UV disinfection. This is the best available ...


    By Panta Rei Srl

  • Swimming pool

    SWIMMING POOL DEHUMIDIFICATION Most pool facilities, indoor swimming pools or spa rooms, need heat a majority of time for both the water and the air to a comfortable temperature, which will generate much humidity in the air. Besides, the humidity in these facilities also comes from ventilation, evaporation of the pool water and the damp ground. The damp air contains chlorine or bromine ...

  • Is Ultraviolet Ultra Safe?

    With retailers under pressure to meet increasing health and safety standards, it’s no surprise that many of our food & products are coming into contact with Ultraviolet (UV) radiation which is gradually becoming common as a cost effective method of reducing or eliminating pathogens Ultraviolet wavelengths are classified into three general areas: UV-A, UV-B and UV-C. These can be used in ...


    By Alpha-Purify

  • Swimming pool

    SWIMMING POOL DEHUMIDIFICATION Most pool facilities, indoor swimming pools or spa rooms, need heat a majority of time for both the water and the air to a comfortable temperature, which will generate much humidity in the air. Besides, the humidity in these facilities also comes from ventilation, evaporation of the pool water and the damp ground.   The damp air contains chlorine or bromine ...

  • Getting the bugs out of electronic devices - Case Study

    UV light quickly and effectively destroys Ozone. atg UV Technology worked with Ozonetech to develop a bespoke and compact ozone destruction system to keep their customers process sterile. The purest water in the world is not, as you might think, rain but the ultrapure water used in the manufacture of silicon semiconductor devices. The reason is quite ...


    By atg UV Technology

  • uHoo - Your First Step to Clean Air

    They say your home is where the heart is. Just like the heart, the home needs a tracker to know whether it is healthy or not. The uHoo indoor air quality sensor acts like a fitness tracker for your home’s indoor air quality. It measures nine parameters – making it – making it the most advanced indoor air quality sensor – that ...


    By uHoo Limited

  • Getting Ready to Re-open; What can be Done to Minimize Risks?

    Restaurants are being allowed to re-open in many parts of the country, typically with some level of restriction that may vary widely from state to state.  In my home state of Massachusetts, one of the hardest hit by COVID-19, restaurants have been able to re-open as of last week – for outdoor dining only. Texas is starting phase 3 of its re-opening, with restaurants now allowed to ...


    By Powerhouse Dynamics

  • Desalination for Resort - Kingdom of Bahrain, 550 m3/day - Case Study

    Project Description: Lenntech has engineered, installed and commissioned a turnkey desalination system, including multimedia filtration, particle filtration, conventional reverse osmosis and post UV treatment. The treated water is used for a multitude of utilities in the luxurious resorts complex. The complete system is equipped with top brand instrumentation, advanced automation and ...


    By Lenntech Water Treatment

  • Vapor Intrusion Issues Risk Occupants’ Health

    Vapor intrusion occurs when a gaseous substance migrates into a building.  For example, volatile organic compounds and other gases can migrate from contaminated soils and groundwater through cracks in foundations or sewer lines and enter a building.  Vapor intrusion can create an indoor environment that damages structural materials and puts building occupants’ health at ...


    By Ultraviolet Devices, Inc.

  • Monitor Volatile Organic Compounds (VOC’s) with PPM Technology’s IAQ Monitor

    Volatile organic compounds (VOC’s) are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects. Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors. VOC’s is one of numerous sensor options that can be incorporated into PPM Technology’s ...


    By PPM Technology

  • Importance of Air & Water Testing in Indoor Pools

    Have you ever wondered why your eyes hurt or why you have a cough after swimming at an indoor pool? We all assume that it’s from too much chlorine in the pool but that is false! If the pool staff doesn’t regularly test and monitor both the air and water indoors, the environment becomes very toxic and unsafe to everyone in the building. Water is an essential ingredient for all life as ...

  • Controlling Bacteria In a Clean Room Environment

    Maintaining the integrity of a cleanroom is a constant battle. The first step to deciding which method, or combination of methods, to employ is to identify the prime sources of contamination. There are three prime sources of contamination through which the integrity of a cleanroom might be breached. First, there is the human element. While many processes might be automated, many situations remain ...


    By GVS Filter Technology

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