WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES

BNR + MBR Equals Success At Water Reclamation Facility

Biological Nutrient Removal (BNR) is allowing many wastewater treatment plants to achieve extremely high effluent quality. Still, for some applications even the most advanced BNR processes can’t address concerns with trace organics, pharmaceuticals, and other endocrine disrupting compounds (EDCs).

FGD Purge Treatment In Coal-Fired Power Generation

Stricter environmental policies and regulations worldwide are changing how industry approaches all aspects of business. Likewise, EU (European Union) environmental policies governing air, soil, and water quality have become progressively stringent.

These policy changes affect the power industry’s balance of meeting growing European energy demands with compliance to environmental standards. In order to conform with EU standards specific for flue gas, a coalfired generation plant (at the time owned by Endesa, Italia, S.p.A.) in Monfalcone, Italy, undertook the measure of installing a state-of-the-art FGD (flue gas desulfurization) system at their facility. This system would remove SO2 (sulfur dioxide) from the emissions for the 336 MW coal-fired power station.

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WASTEWATER DISINFECTION PRODUCTS

C<sup>3</sup>500&trade;D Ultraviolet Disinfection System

C3500™D Ultraviolet Disinfection System

The C3500™D open channel series is an advanced, cost effective solution for the ultraviolet (UV) disinfection of wastewater using high powered (500W), low-pressure lamps.
Brands You Know. Performance You Trust

Brands You Know. Performance You Trust

While the Evoqua name is new, the brands you know and the performance you trust are not. Evoqua continues a 100-year tradition of helping consulting engineers and municipalities respond to market needs and evolving water standards for new plants, upgrades and retrofits.

Municipal UV Wastewater Treatment

Municipal UV Wastewater Treatment

C3 Series™ UV open-channel wastewater disinfection system uses ultraviolet light to disinfect wastewater and prevents the spread of waterborne pathogens to lakes, streams, rivers and coastal waters.

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.

Disinfection Technologies

Disinfection Technologies

When determining the best water disinfection method, considering the countless design and operational factors can be daunting, but Severn Trent Services makes it easy

TrojanUV3000&trade;B &mdash; Wastewater Disinfection System

TrojanUV3000™B — Wastewater Disinfection System

The TrojanUV3000™B is available with a controller that enables flow pacing to maximize operating efficiency and extend lamp life. The system turns UV lamp banks on and off automatically to ensure the required dose is met using the fewest lamps and least electricity. These simple, robust, and operator-friendly systems have demonstrated their effective, reliable performance in thousands of installations around the world.

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.

MicroDynamics® Series OCS 660 Open Channel Wastewater Microwave UV Technology

MicroDynamics® Series OCS 660 Open Channel Wastewater Microwave UV Technology

Severn Trent Services offers the patented MicroDynamics® OCS 660 open channel microwave ultraviolet (UV) system for efficient and effective disinfection of secondary and tertiary wastewater effluent.

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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?

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WASTEWATER DISINFECTION VIDEOS

AccuFAS Aeration Pattern

AccuFAS Aeration Pattern

The Brentwood-engineered AccuFAS Submerged Fixed-Film system adds a fixed-growth surface for biomass to provide enhanced biological treatment and increase capacity for municipal and industrial wastewater. Composed of Brentwood’s structured-sheet, fixed-film media, AccuFAS was developed to optimize airflow and mixing while maximizing contact between the waste stream and biomass.

A Vacuum System That Truly Cleans The Basin Floor

A Vacuum System That Truly Cleans The Basin Floor

Brentwood’s SedVac Sediment Removal System can be used across a wide range of sludge removal applications because of its ability to remove the compression zone layer of settled solids that traditional pipe systems leave behind. SedVac’s unique design funnels the sludge and scrapes the floor, resulting in consistent solids removal of 3 percent concentration without wasting water or clogging.

Waste-To-Energy 101

Waste-To-Energy 101

According to the International Energy Agency, “Renewable, sustainable energy generation is projected to be the fastest-growing energy sector over the next two decades.” In fact, many countries, including the USA, encourage waste-to-energy systems through government financial incentives. Anaerobic Digesters reduce waste streams, control water pollution, divert organics from landfills, produce organic fertilizer and generate energy. Learn the basics here.

Small Tank Mixing Simulation, Part 2

Small Tank Mixing Simulation, Part 2

This video demonstrates how Vaughan Company's Small Tank Mixing Assembly can be utilized to mix only the bottom portion of a tank while leaving the top in a non-turbulent state.

Small Tank Mixing Simulation, Part 1

Small Tank Mixing Simulation, Part 1

Introducing Vaughan Company's new Small Tank Mixing system, this product is meant for smaller applications where there is a need to create a homogenized slurry. This is perfect for getting the most out of your F.O.G. (Fats, Oils, and Greases) application. Part 2 illustrates how this product can be utilized within a Salt Water Disposal application.

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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.