WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES

Closed Vessel UV Successful In El Paso County, TX

Horizon City is located in El Paso County, the most western county in Texas. The city is home to a rapidly growing population of 19,000 people, up from 5,000 during the 2000 Census. The City takes its name from the real estate development company, the Horizon City Corporation. With less than 9 inches of annual rainfall, water conservancy is a routine way of life in this part of the State.

  • SuperDisc™ Filtration System Case Study
    SuperDisc™ Filtration System Case Study

    Glendale Heights Wastewater Treatment Plant discharges treated water to the East Branch of the DuPage River in Illinois.

  • Largest Compressible Media Filter In The World
    Largest Compressible Media Filter In The World

    After many years of planning, design, and pilot testing, the world’s largest compressible media filter is now under construction.

  • Water Utility Turns To State-Of-The-Art UV Technology To Help Address Drought
    Water Utility Turns To State-Of-The-Art UV Technology To Help Address Drought

    The 2013 year was the driest in recorded history with many areas of the San Joaquin Valley reporting groundwater levels more than 100 feet below previous historical lows. 

  • AnoxKaldnes Hybas™: Meeting New Limits
    AnoxKaldnes Hybas™: Meeting New Limits

    In 2008, AnoxKaldnes Hybas™ designs were completed by Veolia for the upgrade of the Field’s Point Wastewater Treatment Facility to meet new seasonal effluent limits for TN and TIN.

  • VLR® System For Biological Treatment Case Study
    VLR® System For Biological Treatment Case Study

    Economic development has its price and sometimes calls for major upgrades to a community’s wastewater treatment facilities.

  • Replacement Vacuum Feeders For Hypo Treatment End Heavy Feeder Maintenance Burden At WWTP
    Replacement Vacuum Feeders For Hypo Treatment End Heavy Feeder Maintenance Burden At WWTP

    The instrumentation supervisor for the City of Baltimore, MD’s 150-MGD Back River wastewater treatment plant (WWTP) reports that replacement of problematic vacuum feeders with more advanced vacuum feed units has ended heavy maintenance burdens associated with sodium hypochlorite (hypo) treatment of plant effluent. By Cliff Lebowitz

  • Disinfection Performance Testing Of High-Efficiency Ultraviolet Water Treatment Chamber
    Disinfection Performance Testing Of High-Efficiency Ultraviolet Water Treatment Chamber

    This is the second in a series of three white papers describing the design and performance of the NeoTech Aqua ReFlex™ treatment chamber. The first describes in detail the theoretical basis for the very high efficiency demonstrated by the chamber. The third paper describes how this chamber design leads to some highly desirable operational advantages beyond just energy ad cost reduction. By J. R. Cooper, Ph. D. and Gwynne Cavender, NeoTech Aqua Solutions, Inc.

  • Theoretical Operation Of High-Efficiency Ultraviolet Water Treatment Chamber
    Theoretical Operation Of High-Efficiency Ultraviolet Water Treatment Chamber

    The NeoTech Aqua ReFleX™ water purification chambers are the most efficient and compact units available today. They require an order of magnitude less energy and less than 25% of the system volume to achieve the same or better purification result as competing chambers. This is the first in a series of three white papers explaining the benefits of these systems. By J. R. Cooper, Ph.D, NeoTech Aqua Solutions, Inc.

  • Three Channel's A Charm: MD WWTP Chooses UV
    Three Channel's A Charm: MD WWTP Chooses UV

    The Seneca Wastewater Treatment Plant (WWTP) receives wastewater from the greater Washington, DC area. Heightened security and concerns over the hazards of using chlorine gas had the Washington Suburban Sanitary Commission (WSSC) reconsidering their wastewater disinfection process equipment.

  • Removal of Metaldehyde & Environmental Contaminant Treatment - Lincoln, United Kingdom (Case Study)
    Removal of Metaldehyde & Environmental Contaminant Treatment - Lincoln, United Kingdom (Case Study)

    Anglian Water (Anglian) is one of the largest suppliers of drinking water and wastewater services in the United Kingdom. As an alternative to ozone, Anglian decided to install a TrojanUVTorrent™ECT UV-oxidation system, as part of a multi-barrier approach, to ensure it produced a potable water supply that matched the high standards required by its regulators and customers.

Not All UV Lamps Are Created Equal

When the Summerville, GA, WWTP was looking to convert from chemical disinfection to UV, staff made the common mistake of purchasing low-price aftermarket lamps to keep costs down. Within eight months, the lamps in the UV system failed to meet expectations for permit requirements, and they had to gain approval for emergency procurement of WEDECO’S ECORAY® lamps as replacements. Today, the plant achieves the required disinfection with a significant reduction in energy use.

More White Papers & Case Studies

WASTEWATER DISINFECTION PRODUCTS

Wastewater Equipment Retrofit, Rehab and Aftermarket Solutions

Wastewater Equipment Retrofit, Rehab and Aftermarket Solutions

When demand increases, regulations change, and components reach their useful life, Evoqua Water Technologies responds.

Wallace & Tiernan® Chlorine Gas Feed Systems

Wallace & Tiernan® Chlorine Gas Feed Systems

About 100 years ago, Charles F. Wallace and Martin F. Tiernan installed the first chlorinator in New York, and since, chlorine gas has been the predominant chemical for the disinfection of water.

Wallace & Tiernan® Analyzers and Controllers

Wallace & Tiernan® Analyzers and Controllers

Wallace & Tiernan MFC analyzer/controller offers a broad combination of drinking water analysis and disinfection/chemical control in a single unit.The MFC analyzer/controller offers an easy, software selectable range of control modes from flow proportional, residual control only, compound loop and set point trim enabling precise control of a chlorinator or metering pump to maintain the desired level of disinfection and water quality.

TrojanUVFit™ — Wastewater Disinfection System

TrojanUVFit™ — Wastewater Disinfection System

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 closed-vessel systems disinfect filtered effluent without breaking head in the treatment process.

Ozone Destruction System

Ozone Destruction System

NeoTech Aqua Solutions’ line of 254 nm wavelength low-pressure lamps effectively destroys residual ozone and a member of our technical staff will professionally size your UV system. 

Envirex® Biological Treatment and Clarification

Envirex® Biological Treatment and Clarification

Evoqua's biological treatment and clarification business is rooted in the first chain systems applied to a wastewater plant. A REX® system from the Chain Belt Company, a precursor to Envirex®, was installed in 1910 and operated for almost seventy years with the support of our experts and aftermarket services. Envirex branded wastewater technologies from Evoqua has continued to be an innovative leader for equipment designs and services for aeration, biological treatment, anaerobic treatment, clarification, digestion, and separation treatment equipment for municipal and industrial applications.

OMNIPURE™ Marine Sewage Treatment System

OMNIPURE™ Marine Sewage Treatment System

OMNIPURE™ systems are the only marine sewage systems that oxidize sewage in the electrochemical cell as well as generate NaOCl for the disinfection of the marine waste streams. OMNIPURE marine sewage treatment units provide effective electrolytic treatment of both black and grey water, meeting personnel treatment capacities ranging from one to more than five hundred people, through a patented and certified process. OMNIPURE systems range in capacity from 781 to 15,842 gals/day as individual units that can be combined for an increased capacity.

ReFleX™ Efficiency

ReFleX™ Efficiency

For both disinfection and TOC-reduction applications, NeoTech Aqua Solutions’ patented ReFleX™ UV chamber technology represents the state-of-the-art in high-efficiency UV systems by reflecting over 99% of the UV we generate back into the water.

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WASTEWATER DISINFECTION PODCASTS

Bio-Augmentation: Adding Bacteria To Wastewater Treatment Plants

Bio-Augmentation: Adding Bacteria To Wastewater Treatment Plants

Novozymes is the world’s largest industrial biotech company. The largest segment of the company deals with enzyme products, and they innovate products and develop applications in a variety of industries including first and second generation biofuels, bio-agriculture, detergents, and wastewater applications.

Ozone: An Emerging Star For Disinfection

Ozone: An Emerging Star For Disinfection

There are many places around the country where water shortage is a big issue. Water is the most precious resource we have, and in light of the shortage, people have started trying to investigate creative ways of ‘what’s my next water resource,’ Chris Milligan, vice president, director of engineering with BlueInGreen, told Water Online Radio in an interview.

UV Disinfection With LEDs

UV Disinfection With LEDs

UV LEDs offer the chemical free disinfection of traditional UV while avoiding mercury lamps. In certain applications where customers are concerned about the potential hazards of mercury contamination in the water from a broken lamp, UV LEDs are interesting because they don’t contain any mercury content at all.

Keeping Costs Down By Focusing On A Smaller Footprint

Keeping Costs Down By Focusing On A Smaller Footprint

Focused on creating solutions with a smaller environmental footprint for its customers, Severn Trent Services recently enhanced one of its gas regulators from handling 100 pounds of chlorine per day to handling 250 pounds per day for the same price.

How Do You Disinfect? Electrolysis Offers Alternative To Chlorine

How Do You Disinfect? Electrolysis Offers Alternative To Chlorine

Though the company has only been around about a decade, MIOX is making a notable impression on the water and wastewater treatment industry.

The Evolution Of Low-Energy UV Disinfection

The Evolution Of Low-Energy UV Disinfection

Conventional ultraviolet (UV) disinfection is a great, but often expensive, solution for the destruction of pathogens in drinking water. All those lamps and power emissions add up. But what if you could perform the same job with 1/10 of the power used by conventional systems?

More Wastewater Disinfection Podcasts
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WASTEWATER DISINFECTION VIDEOS

Package Solution Helps Local Water Utility Save Energy, Environment

Package Solution Helps Local Water Utility Save Energy, Environment

The water utility in Lawrenceburg, IN, was dealing with an aging water treatment system and wanted to solve problems with a package solution.

Efficient, Operator Safe, And Non-Clogging Wet Well Mounted Pump Stations

Efficient, Operator Safe, And Non-Clogging Wet Well Mounted Pump Stations

This City of Perryville, MO appreciates the above grade pumping approach provided by Smith & Loveless. From safety, to efficiency and performance, the Wet Well Mounted Pump Station is the preferred pump station in this Missouri town.

Biological Denitrification Evolves

Biological Denitrification Evolves

As regulation regarding nutrients evolves, so does the technology to remove them.

Oxelia: An Ozone-Enhanced Biologically Active Filtration System

Oxelia: An Ozone-Enhanced Biologically Active Filtration System

Xylem’s Leopold Oxelia is designed for municipal wastewater treatment. The ozone-enhanced biologically active filtration system and multi-barrier solution combines ozone, filtration and analytical instrumentation to deliver optimal wastewater treatment for water reuse and discharge into sensitive waters.

Compact Solids Separation And UV Disinfection Technologies Showcased At WEFTEC (Video)

Compact Solids Separation And UV Disinfection Technologies Showcased At WEFTEC (Video)

Salsnes Filter offers an alternative to traditional primary clarification for solids separation by using a rotating belt filter to remove suspended solids to high levels but also thickening and dewatering the solids in one compact footprint.

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WASTEWATER DISINFECTION NEWS

ABOUT WASTEWATER DISINFECTION

 

Wastewater disinfection takes place after primary, secondary and sometimes tertiary wastewater treatment. It is typically a final step to remove organisms from the treated water before the effluent is released back into the water system. Disinfection prevents the spread of waterborne diseases by reducing microbes and bacterial numbers to a regulated level.

A variety of physical and chemical methods are used to disinfect wastewater prior to it being released into natural waterways. Historically, the chemical agent of choice for municipal wastewater treatment has been chlorine, due to its disinfecting properties and low cost. However, the rising cost of chlorine and concerns that low chlorine concentrations can still be toxic to fish and other wildlife, has given rise to more physical methods of wastewater disinfection being adopted such as ozonation or ultraviolet (UV) light.  

The use of ozone as a disinfection agent has the added benefit of increasing the dissolved oxygen content of the treated wastewater. However, because the ozone has to be generated, ozonation can require prohibitive up-front capital expenditure compared to traditional chlorination. UV disinfection has been growing in popularity as a wastewater disinfection method, in large part because of the life-cycle economics of the equipment and the fact that, like ozone, there is no toxic residual.