Trojan UV - Water Confidence

Solutions / Municipal / Wastewater / Products

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TrojanUVFit

Depending on site and design conditions, wastewater treatment plants producing filtered effluent sometimes prefer a disinfection solution using closed-vessel or pressurized UV reactors.

The TrojanUVFit™ offers an effective and energy-efficient closed-vessel UV solution. This compact reactor is available in multiple configurations to treat a wide range of flow rates. The streamlined hydraulic profile of closedvessel systems disinfect filtered effluent without breaking head in the treatment process. These benefits along with UV’s ability to provide environmentally-friendly, chemical-free treatment for chlorine resistant microorganisms (such as Cryptosporidium and Giardia) make the TrojanUVFit™ closed-vessel solution an attractive option for wastewater disinfection.

>> Download the TrojanUVFit™ Brochure
Regulatory-Endorsed Bioassay Validation
Performance data is generated from actual field testing over a wide range of flow rates and water quality (UV transmission).The bioassay testing conducted on the reactors offers peace of mind and improved public and environmental safety due to verified dose delivery – not theoretical calculations.
 
Compact Reactor for Installation Flexibility
The reactor's compact footprint simplifies installation and minimizes related capital costs. Lamps and sleeves are fully serviceable from the reactor end – allowing the system to be installed against walls, other equipment or piping. Multiple flange orientations are also available – increasing design flexibility.
 
Amalgam Lamps Require Less Energy
These energy efficient lamps only draw 250 Watts per lamp. They have been validated to provide 98% of the original UV output during entire lamp life – 20% less decline than competitive UV lamps.
 
Built for Reliable Performance and Easy Maintenance
Access to internal components (lamps, sleeves, cleaning system) can be done through the service entrance at one end. A safety switch automatically deactivates the reactor if the service entrance cap is removed - added protection for operators. To minimize O&M, the reactors have an automatic wiping system to maintain sleeve cleanliness and an intensity sensor continuously monitors UV output to ensure dose delivery.
System Characteristics
Number of Lamps 
  • 4 to 144 lamps per reactor
Lamp Type
  • High-efficiency, High-output, Low-Pressure Amalgam
Sleeve Wiping
  • Automatic Wiping System
    (Optional Off-line Chemical Cleaning)
Ballast
  • Electronic, constant output (100% power) 
  • Electronic, variable output (60 to 100% power)
Reactor Chamber
Materials of Construction 
  • 316L Stainless Steel
Standard Flange Size (ANSI/DIN)
  • 6 inches (150mm) to 20 inches (500mm)
Outlet Flange Orientation
  • 3, 6, 9, or 12 o’clock position
Power Distribution Center
Electrical Supply
  • Various options available
Available Materials of Construction
  • Mild Painted Steel
  • 304 Stainless Steel
Panel Rating 
  • NEMA 12
  • NEMA 3R
  • NEMA 4X 
System Control Center
Controller 
  • Microprocessor 
  • PLC-based
Typical Outputs Provided 
  • Reactor status, common alarms and SCADA communication (others available)

  • What is ultraviolet (UV) light?

     Ultraviolet (UV) light is a form of light that is invisible to the human eye. It occupies the portion of the electromagnetic spectrum between X-rays and visible light. The sun emits ultraviolet light; however, much of it is absorbed by the earth’s ozone layer.
     
    A unique characteristic of UV light is that a specific range of its wavelengths, those between 200 and 300 nanometers (billionths of a meter), are categorized as germicidal – meaning they are capable of inactivating microorganisms, such as bacteria, viruses and protozoa. This capability has allowed widespread adoption of UV light as an environmentally friendly, chemical-free, and highly effective way to disinfect and safeguard water against harmful microorganisms.

  • How does UV work?

     Unlike chemical approaches to water disinfection, UV light provides rapid, effective inactivation of microorganisms through a physical process. When bacteria, viruses and protozoa are exposed to the germicidal wavelengths of UV light, they are rendered incapable of reproducing and infecting.
     
    Microorganisms are inactivated by UV light as a result of damage to nucleic acids. The high energy associated with short wavelength UV energy, primarily at 254 nm, is absorbed by cellular RNA and DNA. This absorption of UV energy forms new bonds between adjacent nucleotides, creating double bonds or dimers. Dimerization of adjacent molecules, particularly thymine, is the most common photochemical damage. Formation of numerous thymine dimers in the DNA of bacteria and viruses prevents replication and inability to infect.

  • Why is UV better than chlorine?

     UV offers a key advantage over chlorine-based disinfection, due to its ability to inactivate protozoa that threaten public health – most notably Cryptosporidium and Giardia. UV does not add any chemicals to the water and does not produce disinfection by-products. 
     
    Chlorine gas is a highly toxic chemical that must be transported and handled with extreme caution. It is a strong oxidizing agent that can be extremely dangerous to humans. The increasing concerns about the hazards of chemical disinfection to the public, the operators, and the environment have dramatically increased the cost of chemicals and the administrative efforts required to meet safety regulations. As a result, UV disinfection has increasingly become the choice for wastewater disinfection due to some significant advantages over chemical-based disinfection.

  • Water Reuse

    The advanced treatment and reuse of wastewater is becoming increasingly common as municipalities address high water demands and shrinking supplies. Australia, Spain, Italy, California and Florida, to name a few, must balance increasing population growth, dry climates and heavy irrigation/agricultural demands.

    More

  • Secondary & Tertiary Disinfection

    The vast majority of wastewater treatment plants around the world provide secondary treatment through conventional activated sludge processes. Secondary processes are effective upstream of UV disinfection since they remove particles and improve water clarity.

    More

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