CASE STUDIES AND WHITE PAPERS

Dissolved Air Flotation System Reduces Costs, Improves Process

With the town of Johnstown, CO's, water treatment plant began operating its circular clarifier systems at maximum capacity to meet summer peak demand rates, consultants recommeded increasing plant capacity and using dissolved air flotation technology for their clarification process.

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

NeoTech D428™

NeoTech D428™

The NeoTech D428™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

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 D438™

NeoTech D438™

The NeoTech D438™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

GFH® Media for Arsenic Removal in Drinking Water

GFH® Media for Arsenic Removal in Drinking Water

GFH® Media from Evoqua Water Technologies is a specially designed adsorbent media capable of removing arsenic and other heavy metals from raw water supplies.

Trough-Guard® Media Baffle

Trough-Guard® Media Baffle

The Leopold Trough-Guard media baffle is a stainless steel assembly that is fastened onto both sides of wash-water troughs to help prevent significant media loss during concurrent air/water filter backwash.

NeoTech D238™

NeoTech D238™

The NeoTech D238™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

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DRINKING WATER CONTAMINANT REMOVAL PODCASTS

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.

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.

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.

Activated Carbon Stays Strong

Activated Carbon Stays Strong

Sometimes the old ways are the best. Adsorption using porous carbons was described as early as 1550 B.C. on ancient Egyptian papyrus and the treatment method has remained useful for confronting today’s contamination problems.

Understanding The Benefits Of Chlorination

Understanding The Benefits Of Chlorination

Fletcher Roche, Product Manager at Evoqua Water Technologies, explains why chlorine gas is a safe and cost-effective disinfection solution.

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

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.

Trident® HS Package Water Treatment Plant Video

Trident® HS Package Water Treatment Plant Video

There are four stages in the Trident HS package treatment system, which provides multi-barrier protection for difficult-to-treat surface water, groundwater, industrial process water, and tertiary wastewater.

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).