CASE STUDIES AND WHITE PAPERS

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.

  • 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.

  • 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.

  • Multi-Barrier Disinfection Strategy - New York City (Case Study)
    Multi-Barrier Disinfection Strategy - New York City (Case Study)

    New York City is home to more than 8 million people, making it the most populous city in the United States. The majority of New York's drinking water is supplied by the Catskill/Delaware watershed, located approximately 100 miles outside the city. Historically, NYC has not filtered the water from this system, nor did they require any additional barriers to microbial contaminants due to the pristine nature of the watershed.

  • Customized Calcium Hypochlorite System Steps Up To The Challenge
    Customized Calcium Hypochlorite System Steps Up To The Challenge

    Rainbow Water District has 2,400 service connections serving approximately 6,400 customers in the unincorporated portion of Springfield, OR. The district, approximately 100 miles south of Portland, is served by excellent quality groundwater from 10 wells at four well fields near the McKenzie River.

  • 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.

  • Solving A Taste and Odor Problem Step By Step (Article)
    Solving A Taste and Odor Problem Step By Step (Article)

    The City of Alliance Ohio’s water system has experienced annual Taste and Odor (T&O) events since the mid 1950’s, when the first of two reservoirs, Deer Creek Reservoir, was placed into service. Nutrient contaminants, in particular phosphorous, in the watershed accumulate in the reservoirs causing algal blooms. By Terry Keep of TrojanUV, Said Abou Abdallah of Arcadis, and Dr. Dean Reynolds, Department of Water Treatment City of Alliance, Ohio

  • 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.

  • 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.

  • An Alternative Mathematical Model For Oxygen Transfer Evaluation In Clean Water
    An Alternative Mathematical Model For Oxygen Transfer Evaluation In Clean Water

    Energy consumption from aeration system is a biggest part of the total energy cost in wastewater treatment plant and account for as much as 60% of the energy consumption for the activated sludge process. Therefore, it is very important to know how effective the aeration system and significant attention has been paid to development and upgrade of standard method for quantifying oxygen transfer efficiency of the aeration system. By Yanjun (John) He, PE, BCEE, Kruger Inc.

  • Top 10 Considerations When Converting To On-Site Hypochlorite
    Top 10 Considerations When Converting To On-Site Hypochlorite

    Transporting pure salt - the raw material needed to generate sodium hypochlorite onsite – is more cost effective, stable, and safer, than transporting and storing bulk sodium hypochlorite, or gaseous/liquid chlorine cylinders from local chemical suppliers. The conversion to on-site hypochlorite generation can be achieved by adhering to these design guidelines.

  • Ohio Water Plant Finds Effective Alternative To Chlorine Gas
    Ohio Water Plant Finds Effective Alternative To Chlorine Gas

    For many years, Huber Heights, OH, searched for an effective and affordable way to eliminate gaseous chlorine (Cl2) use at its 4.46 MGD Needmore Road Water Treatment Plant. An innovative dry calcium hypochlorite makeup and delivery system now provides a safer disinfection method for operators and the community.

  • 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.

Granular Activated Carbon As A Barrier Against Chemical Spills

Granular activated carbon can provide an effective barrier defense against chemical spills into our drinking water sources. Read this white paper describing how to put GAC to work defending your source waters.

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CONTAMINANT REMOVAL PRODUCTS

Resinex Ion Exchange Resins

Resinex Ion Exchange Resins

In many water treatment and food purification applications, activated carbon is used in conjunction with ion exchange resins to provide an end-product of the desired quality and purity.

NeoTech D322™

NeoTech D322™

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

Patriot™ Series

Patriot™ Series

NeoTech Aqua Solutions’ Patriot Series utilizes D438 chamber technology in a stacked and manifolded configuration to support larger flow volumes. By integrating NeoTech Aqua’s patented ReFleX chamber technology, Patriot systems provide the most efficient and versatile UV water treatment equipment available for large volume users. Further, when configured as an n+1 design, the NeoTech Aqua’s Patriot systems meet most redundancy requirements.

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.

AquaSorb® Activated Carbon

AquaSorb® Activated Carbon

Granular, powdered and extruded activated carbons for the primary treatment of water, recovery and recirculation of process liquors, and treatment of waste liquid streams. The AquaSorb® range of activated process water treatment carbon is manufactured from coal, coconut shell and wood raw materials through steam or chemical activation. Jacobi Carbons offers a supply of AquaSorb® in a range of granular, extruded (pelletised) and ground powder forms, which are specifically designed for use in the liquid phase adsorption systems. From use in large municipal treatment facilities, to small domestic use cartridges, AquaSorb® is synonymous with high efficiency, extended life and cost-effective solutions.

WEDECO DURON® UV System

WEDECO DURON® UV System

Xylem’s WEDECO brand has developed a new open channel ultraviolet (UV) disinfection system that delivers clean, safe treated wastewater of the highest standard using a minimum of energy. The WEDECO Duron UV system eliminates the need for chemical based disinfection as well as delivering lower operating and maintenance costs.

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DRINKING WATER CONTAMINANT REMOVAL PODCASTS

Challenges For Water Utilities Spur Technology Upgrades

Challenges For Water Utilities Spur Technology Upgrades

Lee Odell, Water Treatment Global Technology Lead at CH2M HILL, discusses some of the current challenges that water utilities are facing and how CH2M HILL is well-poised to address them.

Coconut Shell Activated Carbon

Coconut Shell Activated Carbon

Jim Knepper, Vice President of Sales for Jacobi Carbons, discusses the growth of the Company and the advantages of coconut shell activated carbon in complying with the EPA’s disinfection byproduct phase II ruling.

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.

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.

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?

Key Trends In Water And Wastewater Treatment: Non-Chemical Disinfection, Remote Management, And Urbanization

Key Trends In Water And Wastewater Treatment: Non-Chemical Disinfection, Remote Management, And Urbanization

Rick VanSant, President and CEO of UV Pure Technologies, explains some of the key trends currently shaping the water and wastewater market, including non-chemical disinfection, remote management, and urbanization.

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CONTAMINANT REMOVAL VIDEOS

WEDECO Duron UV Disinfection System Overview Video

WEDECO Duron UV Disinfection System Overview Video

WEDECO Duron is a new, open channel UV disinfection system for clean, safe treated wastewater that minimizes energy and footprint. Designed for mid-size to large open channel systems, the Duron eliminates the need for chemical based disinfection while simultaneously reducing electricity costs and the amount of space required. This video explains the overall function of the product.

Becancour Water Treatment Plant Video Testimonial

Becancour Water Treatment Plant Video Testimonial

Pinnacle Ozone Solutions is proud to present a new video featuring one of our newest Canadian installations in Becancour, Quebec. The video features the City’s Superintendent of Environmental Health, Mr. Michel Carbonneau. As you’ll see in the video, Michel has high remarks for Pinnacle’s modular capability, built in redundancy and ease of installation. Pinnacle’s vision of INVENTING a BETTER ozone generation platform centers around a technology that is flexible, reliable and efficient. This video exemplifies our vision and Pinnacle’s commitment to deliver, service and support our customers. Special thanks to Mr. Michel Carbonneau and The City of Becancour for entrusting Pinnacle Ozone Solutions with their ozone generation needs.

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.

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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).