CASE STUDIES AND WHITE PAPERS

Treatment Of Cyanotoxins In Drinking Water With Activated Carbon
Treatment Of Cyanotoxins In Drinking Water With Activated Carbon

Recently, cyanobacteria and cyanotoxins have become a high profile drinking water quality concern in both the United States and abroad. The combination of weather conditions, agricultural phosphate runoff, and other factors has produced water conditions that have favored the formation of cyanobacteria in surface water supplies.

Small UV Plant Is Designed To Address Cultural And Safe Drinking Water Needs Cost-Effectively
Small UV Plant Is Designed To Address Cultural And Safe Drinking Water Needs Cost-Effectively

BI Pure Water worked with University of British Columbia researchers and Lytton First Nation to develop a water disinfection system that addresses the needs of native communities, both cultural values as well as the basic necessity of clean drinking water.

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CONTAMINANT REMOVAL PRODUCTS

SORB 07™ Nitrate Removal System SORB 07™ Nitrate Removal System

With more than 25 years of ion exchange treatment process experience, De Nora Water Technologies has designed the SORB 07™ nitrate removal system to treat nitrate (NO3) contamination in ground water supplies.

SORB 09™ Fluoride Removal System SORB 09™ Fluoride Removal System

The SORB 09 system treats a wide range of water qualities at capacities ranging from 50 to 3,000 gpm. The SORB 09 system features a small footprint and enhanced operation as compared to conventional activated alumina adsorption systems.

ClorTec® Inspection And Maintenance Program ClorTec® Inspection And Maintenance Program

De Nora Water Technologies has developed a comprehensive preventative inspection and maintenance contract program for our ClorTec® on-site sodium hypochlorite generation system.

Capital Controls® Series 1041A Automatic Switchover Capital Controls® Series 1041A Automatic Switchover

The Automatic Switchover system Series 1041 provides safe, reliable switching between two gas (pressure or vacuum) or two liquid (pressure or level) sources assuring an uninterrupted supply of chemical to the application. Automation of all functions (switchover, system initialization, configuration, lamp test, and safety functions) is done with an internal programmable logic controller for operational flexibility, enhanced reliability, and ease of use. If needed, local manual override is conveniently available for operator control to maintain continuous operation.

Aftersales Solutions And Services Aftersales Solutions And Services

At De Nora, we are strongly committed to providing aftersales and service support for our entire equipmen portfolio and similar competitive equipment.

Capital Controls® CHLOR-A-VAC® Series 1520 Chemical Industion Unit Capital Controls® CHLOR-A-VAC® Series 1520 Chemical Industion Unit

The Series 1520 CHLOR-A-VAC® affords high efficiency addition and mixing of gases and liquid chemicals resulting in substantial chemical cost savings.

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DRINKING WATER CONTAMINANT REMOVAL PODCASTS

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?

Combating Chromium The Smart Way Combating Chromium The Smart Way

Ever since Erin Brockovich discovered hexavalent chromium in California’s water supply in the early ‘90s, the contaminant has been on the minds of treatment plant operators everywhere.

Let’s Talk Adenovirus With TrojanUV (Audio) Let’s Talk Adenovirus With TrojanUV (Audio)

Adam Festger, Drinking Water & Environmental Contaminant Treatment market manager for TrojanUV, sat down with Water Online Radio to discuss UV trends and technologies. Hear all about TrojanUV’s “Let’s Talk Adenovirus” campaign, as well as the company’s growing installation base and recent product developments.

Will Peracetic Acid Replace Chlorine? Will Peracetic Acid Replace Chlorine?

Chlorine has long been a water treatment staple, but it’s not without its complications. As an alternative, some treatment facilities have been turning to peracetic acid (PAA) and enjoying several key advantages.

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.

LA Story: Advanced Treatment, Reuse Saves Scarce Water Resources LA Story: Advanced Treatment, Reuse Saves Scarce Water Resources

Officials in Los Angeles have grown tired of importing water, which is an expensive, unsustainable response to the region's persistent drought. The smarter solution, they concluded, is to reuse local resources through advanced purification and aquifer recharge. But how do you ensure safety and efficiency before committing to a treatment technology? A unique piloting tool from Xylem’s Wedeco brand offered the city clear answers.

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CONTAMINANT REMOVAL VIDEOS

biottta Biotreatment Pilot Case Study biottta Biotreatment Pilot Case Study

The Lincoln Pipestone Rural Water District in Minnesota had a high level of both nitrate and manganese in the groundwater. Piloting of the biottta treatment solution proved to be successful.

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.

Building Water Confidence With UV Disinfection (Video) Building Water Confidence With UV Disinfection (Video)

TrojanUV is dedicated to providing the world with more efficient, environmentally-friendly water treatment solutions. This video shows how we’re helping municipalities deliver water confidence to their communities.

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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).