ultraviolet disinfection water reuse Articles

  • 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 ...

  • Urban water reuse: microbial pathogens control by direct filtration and ultraviolet disinfection

    Physicochemical treatment efficiency for unrestricted urban water reuse was evaluated at a conventional activated-sludge wastewater treatment plant (WWTP). Pilot plant set-up consisted of an alum coagulation step, granular media upflow flocculation and direct downflow dual-media filtration followed by ultraviolet disinfection (dose of 95 mJ cm−2). Optimum aluminum sulfate dosage of 10 mg ...


    By IWA Publishing

  • Disinfection of an advanced primary effluent using peracetic acid or ultraviolet radiation for its reuse in public services

    The disinfection of a continuous flow of an effluent from an advanced primary treatment (coagulation-flocculation-sedimentation) with or without posterior filtration, using either peracetic acid (PAA) or ultraviolet (UV) radiation was studied. We aimed to obtain bacteriological quality to comply with the microbiological standard established in the Mexican regulations for treated wastewater reuse ...


    By IWA Publishing

  • Comparison of ultraviolet light emitting diodes with traditional UV for greywater disinfection

    The current technological status of ultraviolet light emitting diodes (UV-LEDs) has reached a point where small-scale ultraviolet (UV) water disinfection applications, that is, for greywater reuse appear increasingly promising. This study compares the germicidal and economical aspects of UV-LEDs with traditional UV. Pure cultures and environmental greywater samples were exposed to different ...


    By IWA Publishing

  • Water Reuse Terminology

    All water on Earth is used and reused, over and over, in an elegant water cycle. Water reuse occurs in various ways on a daily basis. It happens when a community’s treated wastewater is discharged into rivers or other water bodies. If you live in a community downstream of another, chances are you are reusing water from an upstream town. Scientifically proven advances in water technology ...


    By WateReuse

  • Color removal and disinfection with UV/H2O2 system for wastewater reclamation and reuse

    ABSTRACTReuse of wastewater effluents from secondary treatment processes in municipal wastewater treatment plants has been issued because of substantial volumes of relatively clean waters. The major components of criteria for wastewater reclamations are color, organic matter, and pathogens. An advanced oxidation process with low-pressure ultraviolet and hydrogen peroxide addition ...


    By IWA Publishing

  • 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 ...

  • Urban wastewater reuse: a pilot plant experience

    The results of a preliminary verification of domestic wastewater reusability in L'Aquila (Italy) are reported. A Tertiary Treatment Pilot Plant (TTPP), rotary filtration and Ultraviolet (UV) Radiation disinfection, was added to an Urban WasteWater Treatment Plant (UWWTP) to test the compliance with water quality indicated for reuse by the enforced Italian regulation. The TTPP was managed varying ...


    By Inderscience Publishers

  • 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 ...

  • Retirement community graywater reuse - Australia case study

    Project Background or Rationale RSL Care’s Sunset Ridge Retirement Community resides near the Pacific coast in Zilzie, Queensland, Australia. The retirement community includes 100 independent living villas, a 120-bed aged care residential complex, and resort style facilities. Although Zilzie averages 31 in (79 cm) of annual rainfall, RSL Care sought to install a graywater recycling ...

  • Sustainable wastewater separation treatment systems coupled with nutrient and water reducing greywater reuse technologies

    Nationally and internationally, pressure is increasing to introduce nutrient reducing, water conserving and recycling measures for sustainable residential and small community water/wastewater systems. Reports of inadequate water quality and quantity are being reported daily. Over the past thirty years the federal government and State of Alaska have invested over 4 billion dollars installing piped ...


    By Equaris Corporation

  • 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 ...

  • Sensor Setpoint Validation of Reclaimed Water UV Reactors

    ABSTRACTReclaimed water ultraviolet light (UV) disinfection system can be a critical component of a multiple barrier approach for public health protection. Current control methodologies rely upon assumed end of lamp life factors and sleeve fouling factors, which often result in overdosing when the lamps are new and the sleeves are clean and underdosing as the lamps ...

  • UV, a bright future for the water industry

    The use of Ultra Violet (UV) light has now become standard practice in most municipal waste water treatment processes.  Effluent is now starting to be recognised as a valuable resource, not a problem that needs to be dumped. Many waste water facilities are being renamed as water reclamation facilities, and whether the waste water is being discharged into a river, being used to irrigate ...


    By atg UV Technology

  • High quality bathing water protects human health

    The sewage treatment plant of Biarritz, France faced severe issues with inflowing water during heavy rain fall, resulting in untreated wastewater being diverted directly into the sea, alongside public beaches. A fast and reliable disinfection of the flow was needed. Kemira installed DesinFix disinfection technology which is designed for water reuse, and to handle such problematic flows ...

  • Putting recycled water to use in Washington state

    The LOTT Alliance is the regional wastewater treatment system serving the cities of Lacey, Olympia, Tumwater and northern Thurston County (LOTT) in Washington State. The core of LOTT's long-range wastewater resource management plan is production of Class A Reclaimed Water, which is the highest quality of reclaimed water as designated by the Washington Departments of Health and Ecology. The ...


    By BioCycle Magazine

  • A case study of urban wastewater reclamation in Spain: comparison of water quality produced by using alternative processes and related costs

    In Spain, and particularly in the Valencia Region, the scarcity of water resources means that water resource exploitation must be optimized. In this light, reusing the large amounts of treated wastewater is a top priority, especially in agriculture, urban use and the irrigation of golf courses. Rincón de León wastewater treatment plant–water reclamation plant (Alicante, Spain) supplies ...


    By IWA Publishing

  • 2015 North American Water Treatment New Product Innovation Award

    Background and Company Performance Industry Challenges Tertiary and advanced wastewater treatment (WWT) is one of three stages in the cleaning of wastewater generated by the municipal and industrial sectors. Building on and improving upon the results of treatment through initial primary and secondary WWT stages alone, tertiary treatment is performed prior to waste ...


    By Frost & Sullivan

  • Removal and Destruction of NDMA and Precursors during Wastewater Treatment

    N-Nitrosodimethylamine (NDMA) is a potent carcinogen that can form during disinfection processes, particularly in wastewater. To address research gaps associated with the understanding of NDMA formation and fate during conventional and advanced wastewater treatment, and to assess the efficacy of potential control strategies, the WateReuse Foundation funded a team of environmental professionals ...

  • Next generation of UV systems to showcased at WEFTEC 2010

    With atg UV Technology systems treating in excess of 5,000 m3/hr daily, Ultraviolet disinfection is no longer an ‘emerging' technology.  atg UV Technology will be attending WEFTEC 2010, (Booth 1438) and in addition to exhibiting their wide selection of conventional UV disinfection systems and services, technical experts will be on hand to discuss their soon to be released new range of ...


    By atg UV Technology

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