CASE STUDIES AND WHITE PAPERS

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.

  • Surface Water Treatment & LT2 Compliance - Surprise, Arizona (Case Study)
    Surface Water Treatment & LT2 Compliance - Surprise, Arizona (Case Study)

    The White Tanks Regional Water Treatment Facility (White Tanks) is located in Surprise, Arizona, and treats surface water from the Colorado River that is delivered by a 336 mile (540 kilometer) man-made canal.

  • Model Behavior: Evaluating Instrumentation And Control In The Coagulation Process
    Model Behavior: Evaluating Instrumentation And Control In The Coagulation Process

    An electrical engineer does the math on coagulation process control, using computational modeling to determine best practices.

  • Ion Exchange: A Viable Water Treatment Alternative To Membranes
    Ion Exchange: A Viable Water Treatment Alternative To Membranes

    Five decades ago, ion exchange using charged resins was one of two processes used in the water industry for water treatment.

  • Endocrine Disrupting Compounds And Their Treatment
    Endocrine Disrupting Compounds And Their Treatment

    Endocrine disrupting compounds (EDC) are a subset of chemicals identified as contaminants of emerging concern, or “CECs.” EDCs are chemicals that can affect the endocrine (hormonal) systems of humans and animals. Hormones regulate reproduction, growth, and behavior. Anything that can potentially disrupt those functions must be studied carefully.

  • The UV Uprising: How UV Disinfection Will Claw Its Way To Prominence
    The UV Uprising: How UV Disinfection Will Claw Its Way To Prominence

    Chlorination in all of its forms — gas, liquid, or solid — has been the primary way for treatment plants to disinfect the treated wastewater. The treatment plants that use gas chlorination must face federal regulatory oversight in the form of a Risk Management Program (RMP). Liquid chlorine plants trade in the regulatory oversight for a more expensive and less effective product. While chlorine in its solid form is good for small treatment facilities known as package plants (named for their mobility). However, ultraviolet (UV) technology is rapidly altering the landscape of disinfection throughout the industry.

  • The Role Of UV In Solving Next-Generation Water Challenges
    The Role Of UV In Solving Next-Generation Water Challenges

    The global market for water treatment technologies is growing and becoming increasingly important as the quality and quantity of freshwater sources are stressed and the link between fresh water sources and wastewater — returned to the environment — is more and more obvious. By Rick VanSant, President & CEO, UV Pure Technologies, Inc.

  • GAC Solution For Ohio's Most Challenging Water
    GAC Solution For Ohio's Most Challenging Water

    Over the course of many years the City of Celina, Ohio has been challenged with supplying drinking water to the 11,647 residents of the city and the East Jefferson District.

  • UV Disinfection: An Ideal Solution For One Beverage Bottler
    UV Disinfection: An Ideal Solution For One Beverage Bottler

    A well known bottler of teas and sports drinks uses a dose-paced UV system from ETS to accommodate changes in flow and water quality when switching between water sources.

  • Arsenic Removed From Drinking Water With Iron Oxide Adsorption Treatment
    Arsenic Removed From Drinking Water With Iron Oxide Adsorption Treatment

    When high levels of arsenic were found in the drinking water in the community of Alto Lampa outside of Santiago de Chile, municipal water provider Aguas Adinas faced a predicament. AdEdge Water Technologies was contacted to design a treatment approach. This case study describes how iron oxide adsorption helped Alto Lampa reduce arsenic levels in treated water to non-detectable concentrations.

  • MIOX Achieves Increased Efficacy Against Biofilm And Legionella Vs. Common Biocides

    Comparative disinfection studies using 3 oxidizing biocides and 3 commonly used non-oxidizing biocides against Legionella pneumophilia.

  • 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.

  • Known For “Healing Waters,” Pagosa Springs Restores Its Potable Water System With Help From SolarBee® Mixers
    Known For “Healing Waters,” Pagosa Springs Restores Its Potable Water System With Help From SolarBee® Mixers

    Located in the high desert plateau of southwestern Colorado, Pagosa Springs is famous for its geothermal hot springs, which draw visitors worldwide to soak in the mineral-rich water. The Utes called the sulfur springs “Pah-gosah,” meaning “healing waters.” You might say the town’s potable water system is healed now as well.

MEMCOR® Continuous Microfiltration System Maximizes Water Resources For The City Of Scottsdale, Arizona

The desert community of Scottsdale, Arizona had no natural surface water sources and a decreasing groundwater supply. Scottsdale had historically treated and disposed of its wastewater.

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CONTAMINANT REMOVAL PRODUCTS

NeoTech D222™

NeoTech D222™

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

Disinfection Series

Disinfection Series

The NeoTech Aqua Disinfection Series is specially designed to disinfect water and is an essential component in advanced oxidation processes.

WEDECO MiPRO Advanced Oxidation Solutions

WEDECO MiPRO Advanced Oxidation Solutions

Xylem’s WEDECO MiPRO™ solution is based on three key components: Ozone, Hydrogen Peroxide, and UV light. By combining these technologies, flexible oxidation solutions for individual micropollutant requirements are available.

ETS-UV for Drinking Water Disinfection

ETS-UV for Drinking Water Disinfection

The ETS range of drinking water UV systems are modeled using CFD and FEA emulation tools and have been independently validated to demonstrate performance under a variety of operating conditions.

NeoTech D322™

NeoTech D322™

The NeoTech D322™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

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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DRINKING WATER CONTAMINANT REMOVAL PODCASTS

Radium And Iron Removed From Radioactive Water To Solve Water Scarcity Crisis In Texas

Radium And Iron Removed From Radioactive Water To Solve Water Scarcity Crisis In Texas

Jim Jackson, National Sales Manager for Mazzei, discusses a San Angelo, TX project removing radium and iron from a radioactive water source to solve the city’s water scarcity problem.

Chromium-6 Treatment Becomes Key Issue Following California Regulations

Chromium-6 Treatment Becomes Key Issue Following California Regulations

With water scarcity driving populations to new or previously abandoned water sources out West, Chromium-6 is becoming a significant treatment issue. 

The Pros And Cons Of Ion Exchange Versus Membrane Technology

The Pros And Cons Of Ion Exchange Versus Membrane Technology

Frank Caligiuri, Sales Manager for Hungerford & Terry, discusses the merits of ion exchange versus membrane technology with a focus on the constituents being removed

The Value Of Wastewater: Closed Vessel UV Disinfection For Water Reuse

The Value Of Wastewater: Closed Vessel UV Disinfection For Water Reuse

Jon McClean, President of Engineered Treatment Systems (ETS), explains how UV disinfection of wastewater provides an effective and sustainable solution to growing water shortages.

Safer Disinfection With Peracetic Acid

Safer Disinfection With Peracetic Acid

John Maziuk, Technical Development Manager at Solvay Chemicals, discusses the benefits of peracetic acid over other wastewater and stormwater disinfection methods, including no harmful byproducts, a simpler process, and a longer shelf life.

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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CONTAMINANT REMOVAL VIDEOS

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).

MIOX Flowback Water Disinfection For Recycle

MIOX Flowback Water Disinfection For Recycle

Watch as MIOX’s patented mixed oxidant technology dramatically changes, and treats hydraulic fracturing flowback water on-the-fly. MIOX’s water treatment solution has a small footprint, and utilizes only salt and electricity which helps provide low treatment costs.

Leopold® FilterWorx® Overview

Leopold® FilterWorx® Overview

FilterWorx® is a complete water filtration system engineered to improve efficiency and reliability. Ideally suited for applications such as potable drinking water treatment, tertiary wastewater treatment, nutrient removal in water or wastewater, pretreatment prior to low-pressure membrane systems, and RO membrane desalination pretreatment, FilterWorx performance filters feature a flat-bottom flume, fiberglass backwash water troughs, engineered media, three types of underdrains, and media retainers in two different sizes. In addition, FilterWorx control systems provide the longest filtration run cycles to reduce energy consumption and wastewater generation, thereby lowering operating costs.

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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).