Solutions / Municipal / Environmental Contaminant Treatment / Products
TrojanUVPhox
The TrojanUVPhox™ (UV-Photolysis and UV-Oxidation) solution is a groundbreaking, pressurized ultraviolet (UV) light reactor that utilizes Trojan’s high-output, monochromatic amalgam UV lamps.
The TrojanUVPhox™ was designed to maximize efficiency - using 50%-90% less energy than other similarly sized UV reactors. Through the extensive use of computational fluid dynamics models and other computer simulation tools, it has been optically and hydraulically optimized to provide extremely efficient and cost-effective UV treatment. Its unique design allows for the use of multiple reactors in series. This gives the TrojanUVPhox™ an extremely compact footprint, making efficient use of space in a water treatment facility.
When applicable, the reactor is integrated via control algorithms with a hydrogen peroxide delivery system in order to provide UV-oxidation. The hydrogen peroxide delivery system is part of the TrojanUVPhox™ solution.
>> Download the TrojanUVPhox™ Brochure
>> Download the TrojanUVPhox™ Brochure
Modular Compact Reactor
The reactor chambers are modular and vertically stackable which allows for system expansion without increasing footprint. The reactors were designed using computational fluid dynamics modeling and other advanced computer simulation tools to ensure optimum lamp spacing, uniform flow field, and significant efficiency advantages.
High-Output Amalgam Lamps
Trojan amalgam lamps deliver even, stable UV energy output over a wide range of water temperatures. The energy-efficient design reduces electrical costs, reduces reactor footprint and can operate past 12,000 hours.
Sophisticated Controls
The UV controls are integrated with the hydrogen peroxide system to ensure smooth operation with minimal operator involvement. Easy-to-use, digital interfaces are menu-driven for simple operation. The controls interface integrates seamlessly with plant SCADA.
Operator-Friendly System with Optional Sleeve Wiping
The optional sleeve wiping system ensures lamps deliver maximum UV energy for disinfection and UV-oxidation of contaminants. The sleeve wiping takes place while the system is online and operating – so there is no need to shut down or bypass the reactor.
System Characteristics
Number of Lamps
Lamp Type
- 12 to 144 lamps per reactor
Sleeve Wiping
- High-efficiency, High-output, Low-Pressure Amalgam
Ballast
- None
- Automatic Wiping System
- Electronic, variable output (60 to 100% power)
Reactor Chamber
Materials of Construction
Standard Flange Size (ANSI/DIN)
- 316L Stainless Steel
Outlet Flange Orientation
- 4 inches (100mm) to 20 inches (500mm)
- 3, 6, 9, or 12 o’clock position
Power Distribution Center
Electrical Supply
Available Materials of Construction
- 480V, 3 phase, 4 wire + ground
- Other options available
Panel Rating
- Mild Painted Steel
- 304 Stainless Steel
- NEMA 12
- NEMA 4X
System Control Center
Controller
- PLC-based
What is UV-Photolysis?
UV-photolysis is the process by which chemical bonds of the contaminants are broken by the energy associated with UV light. When light is incident on an object, the photons may be reflected, transmitted, or absorbed. When UV photons enter a medium (water, for example), they are both transmitted and absorbed by the medium and its constituents (dissolved species including organic and inorganic substances). Photons that are absorbed may initiate a photolysis reaction.What is UV-Oxidation?
UV-oxidation is a photochemical process that breaks down organic constituents in water by the process of oxidation initiated by UV light plus an oxidant such as hydrogen peroxide. When UV photons are absorbed by hydrogen peroxide dissolved in water, hydroxyl radicals are formed. Hydroxyl radicals are highly reactive chemical species that then attack the contaminant molecule, breaking it into its component forms. Next to flourine (a poisonous, corrosive and malodorous gas), the hydroxyl radical is one of the most reactive species known - more reactive than ozone.Does UV-Photolysis and UV-Oxidation occur simultaneously?
Yes, UV-Photolysis and UV-Oxidation happen simultaneously. Most contaminants are broken down by a combination of both processes. Some compounds, such as 1,4-dioxane, are broken down only by UV-oxidation, with very little contribution from direct UV-photolysis. Other compounds, such as NDMA, are broken down almost exclusively by UV-photolysis.Is hydrogen peroxide safe?
Yes. Hydrogen peroxide is a natural metabolite of many organisms, which decomposes into oxygen and water. Hydrogen peroxide is also formed by the action of sunlight on water – a natural purification system for our environment. Consequently, hydrogen peroxide has none of the problems of gaseous release or chemical residues that are associated with other chemical oxidants.Why is UV-Oxidation better than ozone?
Most waters have some naturally occurring bromide that can react with ozone to form bromate. Ozone is also ineffective for NDMA treatment. Ozone is not as efficient as UV at inactivating the Cryptosporidium and Giardia since large doses or contact times are needed especially in cold waters. The capital investment for ozone is very high and can pose as a risk to operators since ozone is a dangerous gas.Why is UV-Oxidation better than activated carbon?
Large amounts of carbon are required to treat the taste and odor-causing chemicals MIB and geosmin, which have a low affinity for carbon. This technology only transfers a contaminant to the solid phase, but does not destroy it. The disposal of the contaminated carbon requires treatment, hauling, or regeneration, which significantly increases the overall treatment costs. It is also ineffective for treatment of NDMA, 1,4-dioxane, many pesticides, vinyl chloride, and other contaminants with a low affinity for carbon.Why is UV-oxidation better than membranes (i.e. reverse osmosis)?
Membranes separate contaminants from the bulk liquid (filtrate) into a concentrated side-stream (retentate or brine). The volume of retentate can be significant when water resources are in short supply. For example, Reverse Osmosis can reject up to 20% of the incoming water stream. This retentate requires disposal. By comparison, UV is a destructive treatment, requiring no retentate disposal. Membranes are also ineffective for NDMA and 1,4-dioxane treatment
Indirect Potable Reuse
The reuse of wastewater for augmentation of drinking water supplies (a process known as “indirect potable reuse”) is rapidly gaining support as a means of achieving a sustainable water supply and for protection against drought.Contaminant Treatment
Water sources, groundwater and surface water, are increasingly impacted by contamination. With population pressures, climate change, and overuse making every water source important, water providers are increasingly looking to advanced treatment technologies to restore contaminated sources.Groundwater Remediation
In many areas, localized releases of industrial chemicals, pesticides, petroleum additives such as MTBE, and fuel components such as benzene and hydrazine, have impaired groundwater quality. These groundwater “plumes” are commonplace, and in many cases impact public water supplies or impedes the redevelopment of potentially valuable land.
Video
Gallery
Designed for Easy Ma... All internal components can be accessed from the ends of the reactor. ...
Modular Reactor Desi... This 14.5 MGD (2,287 m3 hr) installation consist of modular reactors ...
World's Largest IPR ... At a design flow of 100 MGD (15,772 m3 hr), this Indirect Potable Reuse ...
Simultaneous Chemica... The UV-oxidation process not only destroys chemical contaminants, ...
