UV disinfection system Articles

  • Importance of measuring UV transmittance (UVT) for UV disinfection

    UV disinfection systems disinfect water using UV light at the 254 nm wavelength. UV light at this wavelength actually destroys the DNA of microbiological material in the water which prevents dangerous viruses such as cryptosporidium and e-coli from reproducing and causing harm. UV Disinfection Dose and UV Transmittance (UVT) The effectiveness of a UV disinfection system is determined by the UV ...


    By Real Tech Inc.

  • UV disinfection at the finca - Nicaragua, 500 m3/d - Case Study

    Project Description: Lenntech has engineered, installed and commissioned an UV disinfection system for a horticultural finca in the Republic of Nicaragua. The treated water is used as irrigation water for the plants, disinfecting viruses and bacteria which are harmful to the plants. The UV disinfection system is equipped with top brand instrumentation and equipment. The system is completely ...


    By Lenntech Water Treatment

  • UV disinfection at a flower farm - Republic of Costa Rica, 3x 500 m3/d - Case Study

    Project Description: Lenntech has engineered, installed and commissioned three UV disinfection systems for a flower farm in the Republic of Costa Rica. The treated water is used as irrigation water for the flowers, disinfecting viruses and bacteria which are harmful to the flowers. The UV disinfection system is equipped with top brand instrumentation and equipment. The system is completely from ...


    By Lenntech Water Treatment

  • Importance of Measuring UV Transmittance for UV Disinfection

    UV disinfection systems disinfect water using UV light at the 254nm wavelegnth. UV light at this wavelegnth actually destroys the DNA of microbiological material in the water which prevents dangerous viruses such as crytosporidium and e-coli from reproducing and causing harm. Real Tech has several products that are commonly used to ensure the correct operation and performance of UV disinfection ...


    By Real Tech Inc.

  • UV disinfection at a seed grower - Republic of Colombia, 750 m3/d - Case Study

    Project Description: Lenntech has engineered, installed and commissioned three UV disinfection systems for a flower farm in the Republic of Colombia. The treated water is used as irrigation water for the seeds, disinfecting viruses and bacteria which are harmful to the seeds. The UV disinfection system is equipped with top brand instrumentation and equipment. The system is completely from ...


    By Lenntech Water Treatment

  • UV disinfection at a horticultural farm - Republic of Nicaragua, 1.000 m3/d - Case Study

    Project Description: Lenntech has engineered, installed and commissioned two parallel set up UV disinfection systems for a horticultural application in the Republic of Nicaragua. The treated water is used as irrigation water for the plants, disinfecting viruses and bacteria which are harmful to the plants. The UV disinfection system is equipped with top brand instrumentation and equipment. The ...


    By Lenntech Water Treatment

  • Benefits of UV Transmittance (UVT) field testing for selling & servicing UV Disinfection Systems

    The Real UV254 ‘P’ series portable meters can be used to measure UV transmittance (UVT) in a number of situations, and are especially beneficial when working with small UV disinfection systems. The following cases outline two situations in which Real Tech’s portable meters are invaluable. Servicing Small UV Disinfection Systems An existing customer is experiencing a problem ...


    By Real Tech Inc.

  • Using UV to Disinfect Low Quality Wastewater

    This paper discusses the issues involved in sizing ultraviolet (UV) disinfection systems for low quality water, such as those found in poor quality wastewater (primary effluents) or wet weather flows (combined sewer overflows). Discussions of UV reactor dynamics and the merits of bioassay validation are ...

  • Velocity Profiling Versus Checkpoint Bioassay for Performance Testing of UV Disinfection Systems

    As the recycled water industry is shifting from the use of theory based design of UV disinfection systems to a performance based design approach, there must be method for correlating the performance of one pilot-scale UV disinfection system to that of a full-scale system. Two methods for using existing performance data for the design and operation of future UV systems are presented in this ...

  • Selection and Installation of a UV Disinfection System as a Retrofit to an Existing Wastewater Treatment Plant

    Abstract New regulations affecting the management of chlorine and water quality concerns have led to an increasing popularity in the selection of ultraviolet light (UV) disinfection in the design and construction of new wastewater treatment facilities. For these same concerns, it also makes sense to retrofit existing wastewater treatment facilities to replace the existing chlorination systems ...


    By Arcadis

  • Illuminating Ultraviolet Disinfection for High-Level Reuse in Florida

    Chlorine has been the mainstay of the wastewater disinfection industry for more than 100 years due to its effectiveness, low cost and availability. However, due to various problems associated with chlorine, the Hillsborough County, Florida Water Resource Services Department decided to replace the high-level reuse water chlorine gas disinfection system at the Valrico Advanced Wastewater Treatment ...

  • Fluorescent-conjugated MS2 as surrogates for viruses during drinking water treatment

    Microfiltration/ultrafiltration (MF/UF) membranes and ultraviolet (UV) light disinfection serve as attractive alternative technologies to aid utilities in complying with both the LT2ESWTR and Stage 2 D/DBP. However, both technologies are limited in their ability to remove viruses and at the same time there is a lack of methods to accurately demonstrate virus removal in full-scale settings. In ...


    By IWA Publishing

  • UV Systems for Reclaimed Water Disinfection – From Equipment Validation to Operation

    The Sanitation Districts of Los Angeles County (Districts) operate seven tertiary water reclamation plants (WRPs) with a combined treatment capacity over 200 million gallons per day (MGD). Although chloramination has provided reliable and effective disinfection, the Districts decided to change this disinfection practice at one of the WRPs to ultraviolet (UV) irradiation to minimize ...

  • Shopping for a UV System? Design Considerations and Operation Maintenance Issues

    ABSTRACTThis paper reviews UV disinfection equipment lines from different manufacturers, and summarizes and/or compares different aspects of the design and maintenance of different types of UV systems. The successful performance of an UV disinfection system not only depends on good design but also proper operations and maintenance. When designing a UV system, following factors and system ...

  • Laboratory water supply - Netherlands, 4,0 m3/d - Case Study

    Project Description: Lenntech has engineered, manufactured and assembled a water supply system including reverse osmosis make up water station for a research and development branch of a research company. The water is used to research different oils and other fluids for the fluid medium viscosity The water water supply system is equipped with top brand instrumentation and equipment. The system is ...


    By Lenntech Water Treatment

  • Evaluation of UV System Performance and Challenges of UV Validation Testing at the Laguna County Sanitation District

    ABSTRACTThe Laguna County Sanitation District (LCSD) Water Reclamation Plant, with a design capacity of 3.7 mgd, produces tertiary water that was designed to meet California Title 22 unrestricted re-use criteria. The disinfection in LCSD is provided by an in-line Aquionics Model 7500 medium pressure UV system containing four UV banks. California Department of Health and Services (CDHS) require ...

  • Microwave UV: A New Wave of Tertiary Disinfection

    Currently UV disinfection technologies available for use in drinking water and water reuse applications typically utilize one of three types of mercury UV lamps. These three types of mercury UV lamps include low pressure, low-pressure high-output, and medium-pressure lamps. All of these lamps contain electrodes that facilitate in the generation of UV radiation. These electrodes are of delicate ...

  • Closed vessel or open channel UV disinfection systems

    Ultra violet disinfection is now a standard feature in most waste water disinfection systems. UV has also been adopted by the drinking water community, as a barrier against the chlorine tolerant species such as Cryptosporidium and Giardia. The technology is widely favored due to its non- chemical nature, the fact that no subsequent de-chlorination process is required, and its ability to be ...


    By atg UV Technology

  • Biodosimetry of a full-scale uv disinfection system to achieve regulatory approval for wastewater reuse

    In order to respond to the stringent disinfection requirements for reclaimed wastewater in the United States, Ozonia North America (ONA) undertook a bioassay validation study of a lowpressure nvery high-output (LPVHO) ultraviolet (UV) disinfection system. The disinfection performance of this process technology was verified via biodosimetry in accordance with the Ultraviolet Disinfection ...

  • SOFI - Case Study

    Liquid Sugar Disinfection atg UV Technology, market leaders in the Ultraviolet treatment industry have supplied SOFI, atg UV’s French distributors with three state-of-the-art, ultra compact SS-73-4 Ultraviolet disinfection systems for the treatment of sugar syrup solutions. The systems where supplied to a market leading Algerian food and beverage manufacture who required effective ...


    By atg UV Technology

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