Water Reuse

UV Disinfection and Advanced Oxidation for Water Reuse

Meeting the Demand for Clean Water Supplies

Meeting the demand for clean water has never been more challenging. Communities around the world are facing a growing water stress – an insufficient supply, in terms of water quality or water quantity – and often both. Climate change, growing populations, aging infrastructure, and natural and man-made contaminants are contributing factors making it challenging for municipalities to meet the increasing demands for clean water.

Arid weather and prolonged droughts in areas have intensified the problem. Affected regions such as the southern United States, Australia, Italy, Spain and the Middle East and Northern Africa can no longer rely on natural replenishment of their water sources. Available surface water sources are declining and over-pumping of groundwater beyond natural recharge rates is lowering water tables, increasing groundwater salinity and depleting ground water sources.

Reuse Applications

A photo of a dried up lake or river in an arid region of the world


Efficient Water Reuse is Critical

Many water providers are turning to reuse as the solution to their water supply and quality challenges. Treating and disinfecting wastewater to stringent standards using advanced processes produces clean, safe water that can help augment and diversify water supplies.

Water reuse can help municipalities:

  • Secure future supply throughout unpredictable environmental effects, such as extended droughts
  • Keep local control of their water supply to reduce dependence on costly imported water
  • Protect natural resources by reducing withdrawals from aquifers and other natural water sources

Sprinklers spraying water on crops

Non-potable Reuse

Non-potable reuse is the process of recycling wastewater to be used or sold for a variety of purposes including:

  • Recreational and agricultural irrigation
  • Industrial processes
  • Construction
  • Equipment and vehicle washing
  • Street sweeping

Potable Reuse

Potable reuse is the process of recycling wastewater for the augmentation of drinking water supplies by:

  • Treating water for the replenishment of groundwater supplies (indirectly back to drinking water)
  • Adding highly treated water directly into drinking water reservoirs or into the drinking water network

TrojanUV Systems for Reuse

A photo of a TrojanUVFlexAOP 200 Series chamber

TrojanUVFlexAOP

The TrojanUVFlex®AOP is our latest UV advanced oxidation solution for the treatment of contaminants. It’s cross-flow lamp orientation enhances treatment efficiency and provides built-in redundancy. A compact and modular chamber design allows for easy expandability and installation in even the smallest of spaces.

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A photo of two TrojanUVPhox chambers stacked

TrojanUVPhox

Vertically stackable and modular, the TrojanUVPhox® allows for multiple chambers in series and the ability to expand without increasing footprint. It’s the industry-standard for UV advanced oxidation, currently installed at the world-renowned Ground Water Replenishment System in Orange County, California.

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A photo of a TrojanUVFit chamber

TrojanUVFit

Depending on site and design conditions, wastewater treatment plants producing filtered effluent sometimes prefer a disinfection solution using in-pipe (also called closed-vessel) UV chambers. The TrojanUVFit® offers an effective, compact, and energy-efficient solution for non-potable reuse.

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A photo of a TrojanUV3000Plus module

TrojanUV3000Plus

The TrojanUV3000Plus® is one of the reasons why UV is now a favored technology in wastewater disinfection. Often touted as a flagship UV system, it has demonstrated effective and reliable performance around the world. In fact, over 2,000 municipalities rely on it to disinfect over 30 billion gallons of wastewater every day.

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A photo of a TrojanUVSigna bank in a raised position

TrojanUVSigna

The TrojanUVSigna® incorporates innovations, including TrojanUV Solo Lamp® Technology, to reduce the total cost of ownership and drastically simplify operation and maintenance. It is the ideal solution for treatment plants in need of revolutionary UV technology.

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A photo of a TrojanUVFlex 100 Series chamber

TrojanUVFlex

The TrojanUVFlex® is ideal for non-potable reuse and other wastewater applications where the treatment of filtered tertiary effluent is required. It is designed with features to make installation and operation simpler, faster and more cost-effective than ever before. Built on the TrojanUV Solo Lamp Technology platform, TrojanUVFlex allows for energy-efficient high-intensity delivery of UV light in an extremely compact footprint.

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1.5 Billion Gallons of Recycled Water a Day

Over the last 20 years we’ve worked with hundreds of communities that are now collectively recycling over 1.5 billion gallons of wastewater every day. These maps showcase a select few of our water reuse installations in the United States and internationally.

Over 20 Years of Experience in Water Reuse

Our involvement in water reuse began over 20 years ago when we invested and participated in research initiatives to understand the science of using ultraviolet light for reuse.

This timeline  will take you through some of the most important milestones in our water reuse history, from today all the way back to 1991.

See Timeline

TrojanUV2000 installed at the Rapid Infiltration & Extraction treatment facility in California

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