CASE STUDIES AND WHITE PAPERS

Hendersonville Water Treatment Plant Features Innovative Disinfection System
Hendersonville Water Treatment Plant Features Innovative Disinfection System

Hendersonville Utility District (HUD) serves one of the most populous suburbs of Nashville, Tennessee.

  • Midlothian, TX, Expands Water Treatment Plant With A Safe, Reliable Disinfection System
    Midlothian, TX, Expands Water Treatment Plant With A Safe, Reliable Disinfection System

    When the City of Midlothian, Texas, was ready to expand their water treatment plant to accommodate a growing population, they carefully considered and investigated their water disinfection options.

  • Wastewater Plant In Como, Italy, Upgrades To De Nora Ozone For Significant Savings
    Wastewater Plant In Como, Italy, Upgrades To De Nora Ozone For Significant Savings

    The Lariana Depur wastewater treatment plant in Fino Mornasco, Italy, treats wastewater from multiple textile manufacturers in the Como region, known as the heart of the textile industry. Since 1994, ozone has been used effectively as a polisher to remove the dark blue-purple color — the result of the dyes used in the textile dyeing and printing process — from the water.

  • Upgrading DWTP Operations In Kansas With The QbD1200 TOC Analyzer
    Upgrading DWTP Operations In Kansas With The QbD1200 TOC Analyzer

    For drinking water treatment plants (DWTPs), the EPA’s Disinfection Byproduct Rule (DBP) is a way of life. Unfortunately, for many facilities the equipment and operations haven’t evolved with the regulation mandates, leaving facilities in a tough spot. For a DWTP in Douglas County, KS, its challenges with accurate TOC measurement and testing, along with expensive calibrations and extended downtime with its prior TOC analyzer led it to trialing the Hach QbD1200 TOC Analyzer. Read the full case study to learn more.

  • Robust Encore® Pumps Replace Peristaltic Hose Pumps To Maintain Consistent pH For Finished Drinking Water
    Robust Encore® Pumps Replace Peristaltic Hose Pumps To Maintain Consistent pH For Finished Drinking Water

    Upper Deerfield Township, NJ relies on groundwater from four wells measuring 120 to 160 feet deep. The water is treated at two treatment plants with a capacity of 2.2 MGD and then pumped out to the distribution system with approximately 750,000 gallons of storage. Since the deep groundwater is hard, operators add lime to the finished water to raise the pH to reduce hardness.

  • Need More Water? Think Ozone-BAC For 'One Water' Resolution
    Need More Water? Think Ozone-BAC For 'One Water' Resolution

    If you thought reverse osmosis was the one and only choice for potable water reuse, think again. Ozonation followed by biological activated carbon (ozone-BAC) is more suited to inland communities and may be better at removing chemicals of emerging concern (CECs).

  • Full-Scale Installation Report For Z-88® Radium Removal – City of Bridgeton, NJ
    Full-Scale Installation Report For Z-88® Radium Removal – City of Bridgeton, NJ

    WRT’s Z-88® Radium Removal treatment system was selected to remove high concentrations of radium in two treatment facilities for the City of Bridgeton, NJ.  Both treatment facilities are now producing safer drinking water since the installation of the Z-88® Radium Removal treatment systems in 2009 and 2010.

  • Granular Activated Carbon Removes PFOA From Drinking Water
    Granular Activated Carbon Removes PFOA From Drinking Water

    In the fall of 2015, a small village on the border of Vermont in New York State, tested positive for Perfluorinated Compounds (PFCs), specifically Perfluorooctanoic Acid (PFOA), in the municipal drinking water. The influent levels of PFOA in the water were above 600 ng/L, and thus considered harmful to village residents. Realizing that PFOA was on the U.S. EPA Contaminant Candidate List, the Village solicited the services of engineering firm CT Male Associates to investigate treatment options and provide a treatment system.

  • Largest Ozone Facility In North America Meets Regulatory Requirements And Remediates Taste & Odor Problems
    Largest Ozone Facility In North America Meets Regulatory Requirements And Remediates Taste & Odor Problems

    The North Texas Metropolitan Water District began working to add ozone to its four interconnected water treatment facilities which operate as the Wylie Water Treatment Plant (WTP).

  • How To Know It’s Time To Replace Your RO Membrane
    How To Know It’s Time To Replace Your RO Membrane

    Reverse osmosis, or RO, is one of the finest technologies to purify water containing high total dissolved solids (TDS) levels of more than 500 ppm. Reverse osmosis plant exporters explain the technology as a separation technology where dissolved and invisible impurities in water are separated with the help of semi-permeable membrane or RO membrane that works under high pressure.

  • Arsenic Removal Pilot Study Meets California Standards
    Arsenic Removal Pilot Study Meets California Standards

    Well water from several locations in Ridgecrest, California area is high in arsenic, carbonates and pH. Due to the high levels of arsenic, some wells are not being used to supply municipal water to the city of Ridgecrest and were shutdown. Due to local demand, the feasibility of treating these wells to remove most of the arsenic before blending with water from other wells is being investigated.

  • Monoclor Chloramine Residual Management System Manages Residual For Problematic 5.5 Million Gallon Tank
    Monoclor Chloramine Residual Management System Manages Residual For Problematic 5.5 Million Gallon Tank

    Eastern Municipal Water District (EMWD) serves about 142,000 customers in Riverside County, CA. The EMWD service area is one of the largest for any water district in arid southern California. On the drinking water side, EMWD manages two water treatment plants and over 15 reservoirs. With 70% of the district’s water coming from the Metropolitan Water District with chloramine disinfection, EMWD has become reliant on chloramine disinfection to manage long transmission lines and longer detention times.

  • Maximum Ozone Transfer Efficiency Across Broad Range Of Water Flow
    Maximum Ozone Transfer Efficiency Across Broad Range Of Water Flow

    The design team for the intermediate ozone system at Buckingham Water Treatment Plant, Quebec, had limited space available for ozone contacting for the plant’s 1.3 – 7.4 MGD flow, so a standard fine bubble diffusion basin for ozone disinfection was not an option.

Full-Scale Installation Report For Z-92® Uranium Removal – City Of Grand Island, NE
Full-Scale Installation Report For Z-92® Uranium Removal – City Of Grand Island, NE

A single WRT Z-92® Uranium Removal treatment system was selected by the City of Grand Island, NE to remove high concentrations of uranium in three city wells.  When the Z-92® Uranium Removal treatment system was installed in 2012, it was the largest uranium treatment facility in the nation. The high uranium in the raw water source is consistently being reduced to levels below the Maximum Contaminant Level (MCL). 

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CONTAMINANT REMOVAL PRODUCTS

Aqua-Jet® SS-PW Surface Aerator For THM Removal Aqua-Jet® SS-PW Surface Aerator For THM Removal

The Aqua-Jet® SS-PW surface mechanical aerator, manufactured by Aqua-Aerobic Systems is certified to NSF/ANSI 61 by UL for use in potable water applications. These units can be utilized for THM stripping applications or circulation in potable water treatment systems and reservoirs with a minimum volume of 100,000 gallons.

Sodium Fluoride Feed Systems Sodium Fluoride Feed Systems

The IMS Fluoride Feed Systems are designed with separate saturator and solution tanks to ensure complete saturation, high reliability, low maintenance, and ease of use. Systems are sized to meet customer requirements.

Contaminant Removal Contaminant Removal

With 90 years of water treatment experience, Loprest has the expertise to design an effective treatment process for your water treatment challenges.  From basic filtration and ion exchange to multiple contaminant applications, challenge Loprest for an economic, effective solution of your water quality compliance issue.

Liquid Ammonium Sulfate Feed Systems Liquid Ammonium Sulfate Feed Systems

IMS’s custom-designed, modular LAS Feed Systems for water processes are pre-assembled, factory-piped, wired and tested, offering low installation costs and typical installation time of only 2 hours.

Ultra-High Recovery Reverse Osmosis Ultra-High Recovery Reverse Osmosis

AdEdge-ROTEC’s Flow Reversal technology is designed to be implemented in new and existing reverse osmosis desalination facilities for water purification, brackish water, process water, and other industrial applications. This high recovery technology addresses concerns often associated with desalination and enables significant system performance improvements, leading to higher profitability, reduced operating costs, and a lower environmental impact.

Carbon Systems Carbon Systems

Loprest designs and manufactures granular activated carbon (GAC) treatment systems for taste and odor applications, chlorine removal, PFC’s, 1 2 3 TCP, PCE/TCE, 1 4 dioxane, and many other contaminants. Loprest has a long, successful history in the selection and application of the proper carbon media for the application.

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DRINKING WATER CONTAMINANT REMOVAL PODCASTS

A True Lifesaver: Grundfos Provides Key Element For High-Quality Water A True Lifesaver: Grundfos Provides Key Element For High-Quality Water

The facilities run by the University of Iowa Hospitals & Clinics have strict standards for water quality, as staff must protect the very sensitive equipment and patients under their care. Safeguarding against such threats as Legionella, there is no room for treatment system downtime. As maintenance issues with the network's existing water treatment systems became ever-increasing, a new technology was sought.

PAA And UV Pair Up To Improve Disinfection Performance PAA And UV Pair Up To Improve Disinfection Performance

Peracetic acid (PAA)-based disinfection is growing in the US, both as a standalone disinfection method and in conjunction with other applications such as UV. Water Online Radio sat down with John Maziuk, Technical Development Manager with Solvay Chemicals to understand why.

The Growth Of A Carbon Company The Growth Of A Carbon Company

Jacobi Carbons Inc., the largest worldwide manufacturer of coconut shell activated carbon, will be celebrating it’s 100th birthday in 2016.

The Microbes Have Us Outnumbered 20 To 1: Should We Be Worried? The Microbes Have Us Outnumbered 20 To 1: Should We Be Worried?

A lot has changed over the past 15 years. Back in the early 2000s, many utilities weren’t interested in understanding what was in their water beyond the contaminant and disinfection byproduct levels they were regulated to comply with. But as Pat Whalen, President and CEO of LuminUltra, explains in this ACE 2018 Water Talk interview, a steady stream of ongoing education and the modern data storage and analytics that cloud computing provides, has developed some rabid fans eager to explore the microbiology of their water systems.

True BLEU: Underdrain Concept And Design By Tonka Water True BLEU: Underdrain Concept And Design By Tonka Water

Rick Mann, VP of sales with Tonka Water, shares details on an underdrain system that can fit into any plant – and is built to last.

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.

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CONTAMINANT REMOVAL VIDEOS

Calgon Carbon Reactivation Video Calgon Carbon Reactivation Video

After an activated carbon’s adsorptive capacity has been exhausted, it can be returned to Calgon Carbon for thermal reactivation. With high temperature reactivation followed by off-gas treatment, the adsorbed organic compounds are destroyed and reactivated carbon can be safely and cost-effectively recycled back to facilities for continued use.

Watch CoMag® System Deliver Rapid and Reliable Floc Settling Watch CoMag® System Deliver Rapid and Reliable Floc Settling

The CoMag® system from Evoqua improves chemical flocculation treatment in wastewater and drinking water applications by using magnetite (an iron ore) to ballast chemical floc, resulting in rapid, reliable and enhanced settling and clarification. The CoMag system settles floc up to 30 times faster than conventional treatments, which reduces plant investment costs by enabling greater treatment capacity in smaller or existing tanks.

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.

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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).