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Enclosed UV Disinfection – Evoqua ETS

Evoqua ETS UV Technology is used disinfect the municipal wastewater before discharge into a water source. The ETS-UV™ system uses a closed vessel approach, which means greater operator safety, a smaller footprint and easier for plant staff to maintain. The enclosed approach is quickly gaining favor over the older open channel UV systems because of reduced operating life costs and greater operator safety. The UV chamber is fabricated from 316L stainless steel and contains an automated wiper system that keeps the quartz free from fouling. The chamber also features an access hatch that makes routine maintenance much easier and convenient for operators. Each chamber contains either low pressure/high output or  medium pressure lamps which can be removed with effluent in the UV chamber. The lamps use the Twist-LOK lamp connector for ease of connection. Municipal plants often achieve a two years of lamp life for low maintenance and operational costs.

Eenclosed Vessel UV Disinfection offers significant advantages over open channel including simple installation, floodproof, does not require complicated constant level controller, and energy efficient. These open, gravity flow channels suffer from many disadvantages; poor hydraulic mixing, very large footprint, expensive to build, difficult to maintain and are vulnerable to fluctuations in flow rate. Closed vessel ETS-UV disinfection systems are easy to install within existing pipework and new construction does not require the large footprint of concrete channels.  Disinfection into a closed pipe will ensure optimized hydraulics and prevent the operator for exposure to the wastewater and UV light

Disinfection

Ultraviolet (UV) irradiation is used for multifunctional purposes.  UV is most commonly used as an environmentally friendly alternative to chemical disinfection. It’s one of the most effective methods for inactivating harmful pathogens such as Listeria, E.coli, Giardia and chlorine tolerant pathogens like Cryptosporidium.  UV is also used for removal of organic and inorganic contaminants, including chlorine, ozone and Total Organic Carbon (TOC).  UV used in conjunction with an Advanced Oxidation Process (AOP) will remove Compounds of Emerging Concerns (CEC’s), Synthetic Organics (SO’s), Endocrine Disruptor Compounds (EDC’s) and Personal and Pharmaceutical Care Products (PPCP’s), as well as various taste and odor compounds from water.

Why ETS-UV?

Safety

  • Closed vessel UV, no open water source
  • Reduced UV exposure
  • Constructed from materials that will not produce harmful carcinogenic byproducts

Compact footprint, easy installation

  • Lower installation costs which allows for quicker and easier installations
  • Provides solutions for new installations or retro fit
  • Flexibility of installation either horizontally or vertically to accommodate the most challenging footprint restrictions

Reduced Maintenance

  • Wiping mechanism is external to the water
  • Wiper rings can be replaced without removing wiping carriage from chamber
  • Individual lamp and sleeve replacement offers a twist and lock connection
  • Access hatch available on many models

Many of our systems have been validated per rigorous industry specific standards.

  • Validation for drinking water per USEPA UVDGM and NSF/ANSI Standard 61
  • NSF 50 Listed (Recreational water)
  • Validated to the 2003 and 2012 NWRI Reuse Guidelines
  • Meets the requirements of all state and provincial codes and the Model Aquatic Health Code for recreational water
  • Meets all the requirements in the FDA’s Grade A Pasteurized Milk Ordinance (PMO) for UV pasteurized equivalent water in dairy facilities

ETS-UVLW UV – Low Pressure, High Output

The ETS UVLW model range is a multi-lamp low-pressure high output amalgam reactor with lamps positioned parallel to flow. The model is validated in accordance to the NWRI Reuse Guidelines. The chamber has been designed with a unique hatch for access into the chamber, which is a valuable feature when disinfecting wastewater applications. The ETS UVLW is known for its low head loss, high output lamp and advanced design features such as an effluent chamber

 

  • Flexibility of installation
    • Ability to be installed in a vertical or horizontal orientation
    • Easily incorporated into new installations or retrofitted solutions
    • Reduced footprint design
  • Compatible solution
    • flanges are standard ANSI 150 RF
    • flexible connection range of 8 to 20”
  • Lamps offer a variable power to meet rigorous NWRI performance requirements
    • Improve lamp life
    • reduce energy costs
  • Low voltage automated wiper
    • Keeps optical path free from fouling
      • reduction in maintenance
      • extends lamp life
  • Micro processing system for basic control to full plant integration

ETS-SW UV Disinfection Systems

The ETS-UV™ SW system is a medium pressure, multiple lamp, advanced disinfection system that is easily incorporated as retrofit or new construction applications. The system is designed with a unique hatch for access to the chamber and is prized for its ability to perform in harsh environments. Skid/container options and explosion proof packages available.  This closed vessel system in many cases, is replacing open channel disinfection in wastewater and reuse applications.

Flexible Design

  • Ability to be installed in a vertical or horizontal orientation
  • Easily incorporated into new installations or retrofitted solutions
  • Reduced footprint design
  • Flanges are standard ANSI 150 RF
  • Flexible connection range of 4″ to 30″, metric available
  • Energy Efficient: Continuously meets dosing requirements to reduce energy costs
  • Automated Wiper

 

Webinar: 5 Top Trends Driving the Use of UV Disinfection for Microbial Control

Summary

Discover the number of emerging microbial pathogens that now display an increased tolerance to chlorine and pasteurization methods.  Find out how to achieve protection of quality and brand integrity by utilizing validated UV disinfection technology in product liquids, process water or industrial effluent while reducing energy and operating costs.  Attendees will learn how effective UV treatment can be an alternative to pasteurization, reduce or eliminate the use of chemicals or additives to prevent contamination, achieve water reuse initiatives and meet industrial effluent requirements.

Key Learning Objectives

  • Discover how UV disinfection works
  • Learn about the top 5 trends driving the urgent need to use UV disinfection
  • Know what to expect in lamp technology, design and performance validation to achieve the most effective disinfection