CASE STUDIES AND WHITE PAPERS

Poison In The Water: How To Defeat Toxic Algae

Like many municipalities, Hamilton, Ontario, is wary of harmful algal blooms and toxic cyanobacteria. To mitigate the threat and protect drinking water, a proactive, risk-based plan was developed.

Municipality Removes Biofilm, Improves Water Quality, Lowers Dosage With MIOX

Looking to reduce potential disinfection byproducts issues that new and difficult regulations were requiring, a Tennessee municipality began investigating alternative water treatment disinfection methods in an effort to reduce the potential liability (RMP) involved with using and storing gas chlorine. Within months of switching to a mix of oxidants (MOS), a difference was noted in the systems residual, residual was no longer dead spotting in low flow areas, and much higher residual was noted in areas that had been difficult to maintain At the end of the first year of operation the municipality had also documented a reduction in their disinfection byproducts formations, specifically both TTHMs and HAAs, which were both reduced by 50% in direct comparison with the quarterly results from the previous year.

More Features

CONTAMINANT REMOVAL PRODUCTS

NeoTech CU-4 X™

NeoTech CU-4 X™

The NeoTech CU4-X™ UV Water Treatment Control Interface is a remote and compact master controller capable of managing up to four NeoTech ultraviolet water treatment chambers independently and simultaneously.

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.

NeoTech D222™

NeoTech D222™

The NeoTech D222™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

Xylem’s Leopold Oxelia™ for Drinking Water Applications

Xylem’s Leopold Oxelia™ for Drinking Water Applications

Biological and chemical contamination in drinking water poses a significant public health risk and plant operators require a treatment system that allows them to produce a safe and reliable supply of clear, good-tasting and biologically-stable finished water with the lowest concentrations of non-desired substances.

TOC Reduction

TOC Reduction

NeoTech Aqua Solutions provides the most efficient and cost-effective UV systems for destroying Total Organic Carbons (TOC’s) in water.  Whether your destroying NDMA, 1,4-dioxane, TCE, MTBE, urea, endocrine disruptors or other organics, only NeoTech Aqua provides ultraviolet TOC reduction with a treatment chamber optimized for low pressure mercury lamps.  As a result, NeoTech Aqua’s UV systems achieve a three times greater TOC reduction per kilowatt compared to standard UV systems, reducing our clients’ costs and energy consumption. In addition to efficiently generating ample 185 nm UV for TOC reduction, NeoTech Aqua’s TOC reduction systems also generate significant levels of 254 nm UV which serve as a powerful disinfectant, providing you both TOC-free and organism-free product water.

TrojanUVTelos™ — Drinking Water Disinfection System

TrojanUVTelos™ — Drinking Water Disinfection System

TrojanUVTelos™ (télōs) is the latest evolution of UV for small communities and was created to address the needs of the energy- and maintenance-conscious buyer. This advanced system utilizes TrojanUV Solo Lamp™ Technology and TrojanUV Flow Integration (FIN™) hydraulic optimization technology, which leads to low power consumption, uniform UV dose delivery and a low lamp count. With these features, the advantages of TrojanUVTelos are clear — lower life cycle costs, easy maintenance and reduced environmental impact.

More Products

DRINKING WATER CONTAMINANT REMOVAL PODCASTS

Advanced Water Treatment Solutions To Solve The Modern Treatment Puzzle

Advanced Water Treatment Solutions To Solve The Modern Treatment Puzzle

Advanced treatment solutions continue to evolve as 1,4-Dioxin, N-Nitrosodimethylamine (NDMA) removal and Pharmaceuticals and Personal Care Products (PPCPs) appear on the regulatory horizon. Many times, advanced treatment requires combinations of different products in the treatment process.

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.

Clearing The Air With Activated Carbon

Clearing The Air With Activated Carbon

Think you know activated carbon? The range of capabilities is so robust that operators of all types — drinking water, wastewater, municipal, or industrial — should come to fully understand its usage.

UV-LED Technology: The Latest In Disinfection

UV-LED Technology: The Latest In Disinfection

Dan Shaver, Business Development Manager at Aquionics, talks about the advantages of UV-LED technology for disinfection: low energy requirements, chemical-free and customizable design, and proficiency in solar or battery-powered applications.

Biological Treatment Comes Of Age

Biological Treatment Comes Of Age

Biological treatment has been around quite a while at wastewater treatment plants, but it’s still undergoing evolution and innovation.

UV Examined (Audio)

UV Examined (Audio)

Adam Festger, Market Manager, Drinking Water and Environmental Contaminant Treatment for TrojanUV, highlights some of advances in UV technology over the last few years including UV groundwater treatment, UV chemical contamination treatment and UV lamp efficiency.

More Podcasts
Newsletter Signup
Newsletter Signup
By clicking Sign Me Up, you agree to our Terms and that you have read our Privacy Policy.

CONTAMINANT REMOVAL VIDEOS

Operation And Maintenance Made Easy (Video)

Operation And Maintenance Made Easy (Video)

Disinfect any type of effluent (including primary and CSO) with the TrojanUVSigna pilot trailer. The TrojanUVSigna plumbs right into a treated effluent sidestream and includes all of the features of a full-scale installation.

Water Purification Solutions From Severn Trent Services

Water Purification Solutions From Severn Trent Services

Severn Trent Services offers a broad range of water treatment technologies concentrated around disinfection and filtration. In this video, Sales Director John Dyson highlights the new Anchor-Rite® design for the TETRA® LP Block™, dual parallel lateral underdrains that are popular with plant owners as a retrofit or for new filter underdrain applications. Find out how the company is currently working with customers to identify needs and plan their product portfolio accordingly.

Innovation Spotlight: Real Tech Water Purification Technology

Innovation Spotlight: Real Tech Water Purification Technology

Real Tech Inc. is the subject of this Ontario Innovation spotlight, which details the company's cost-effective technologies to detect reactive organic matter in water and prevent disinfection byproducts (DBPs).

More Videos

ABOUT

The removal of contaminants from public drinking water systems in the US is mandated by the Environmental Protection Agency’s (EPA) National Primary Drinking Water Regulations. These are legally enforceable standards that protect public health by limiting the levels of contaminants in drinking water. Similar regulations are managed by agencies worldwide to protect their citizens from drinking water contamination.

There are a plethora of drinking water contaminant removal technologies that public and private water systems use to comply with the EPA’s drinking water regulations. These include reverse osmosis, membrane, nanofiltration, ultrafiltration, chlorine disinfection, UV disinfection and Ozone-based disinfection practices.

The EPA’s list of drinking water contaminants is organized into six types of contaminants and lists each contaminant along with its Maximum Contaminant Level (MCL), some of the potential health effects from long-term exposure above the MCL and the probable source of the drinking water contaminant.

The six types of contaminants are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

Examples of microbiological, organic contaminants are Cryptosporidium and Giardia lamblia. Both of these microorganic pathogens are found in human or animal fecal waste and cause gastrointestinal illness, such as diarrhea and vomiting.

A common disinfectant used in municipal drinking water treatment to disinfect microorganisms is chlorine. The EPA’s primary drinking water regulations require drinking water treatment plants to maintain a maximum disinfectant residual level (MDRL) for chlorine of 4.0 milligrams per liter (mg/L). Some of the detrimental health effects of chlorine above the MCL are eye irritation and stomach discomfort.

Similarly, byproducts from the chlorine-based disinfection methods used by public water systems to remove contaminants can be contaminants in their own right if not removed from the drinking water prior to it being released into the distribution system. Examples of disinfection byproducts include bromate, chlorite and total trihalomethanes (TTHMs). Not removed from drinking water, these disinfection byproducts can increase risk of cancer and cause central nervous system issues.

Chemical contamination of drinking water can be caused by inorganic chemicals such as arsenic, barium lead, mercury and cadmium or organic chemicals such as benzene, dichloroethane and other carbon-derived compounds. These chemicals get into source water through a variety of natural and industrial processes. Arsenic for example is present in source water through the erosion of natural deposits.  Many of the chemical contaminants are derived from industrial wastewater such as discharges from petroleum refineries, steel or pulp mills or the corrosion of asbestos cement water mains or galvanized pipes.

Radium and uranium are examples of radionuclides. Radium 226 and Radium 228 must be removed to a level of 5 picocuries/liter (PCI/L) and Uranium to a level of 30 micrograms/liter (30 ug/L).