In late 2005, the City of Newberg, Oregon, decided to upgrade their water treatment plant disinfection process from gas chlorine to on-site hypochlorite generation (OSHG) in an effort to simplify operations and increase operator safety. The plant produced an average of 2.5 million gallons per day (MGD), with a peak capacity of 5 MGD.
The Hagerstown Wastewater Treatment Plant in Maryland incorporated several plant modifications, one of which was the conversion of their disinfection process from the use of ozone to UV.
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.
Installing and operating an ozone oxidation system for wastewater remediation at a gold mine located in a remote region of Alaska is full of challenges.
In April 2013, City Utilities started up three Microclor Model MC‐1500 skid systems, each rated at 1,500 pounds per day of free available chlorine.
Chatsworth Water Works Commission provides both water and wastewater services to the 5,000 residents of the cities of Chatsworth and Eton, GA.
The Cheyenne Board of Public Utilities (BOPU) operates the water and wastewater systems for the capital of Wyoming which has a population of more than 63,000. Located in the fast growing Front Range Urban Corridor, BOPU is challenged by growth, periodic water scarcity and aging infrastructure.
In 2017, a municipal water treatment plant was commissioning a new elevated tank. The tank had been cleaned, flushed and disinfected, but initial test results indicated unacceptable water quality. After a second cleaning, the tank was refilled and water samples were sent to the lab for follow-up testing.
The Metropolitan Water Reclamation District of Greater Chicago (MWRD) — of which the Terrence J. O’Brien Water Reclamation Plant (WRP) is part of — has made a number of upgrades to its treatment process in recent years.
Significant innovation had occurred in the 17 years since the TrojanUV4000™ was installed at the Murfreesboro Water Resource Recovery Facility. Advancements associated with system efficacy, simplified maintenance, and energy efficiency had been introduced, all of which correlate to cost savings. Such advancements can all be found in the TrojanUVSigna™ – the UV system that was selected for the upgrade.
After a 17-year run, a plant’s UV disinfection system was limping toward the finish line. The city needed to identify a replacement UV system that fit into the same channel, offered lower power consumption, and contained a practical ease of maintenance to reduce the amount of labor consumed on the equipment. The new system requires dramatically less power to run while simultaneously streamlining upkeep.
The water treatment plants (WTP’s) manager for the city of Midlothian, TX reports significant reduction in chemical costs, gaining new management control for their generation and feed equipment, and ending a pesky maintenance burden, by switching to three-precursor vacuum generator-feed, from batch-generator-pumping, for introducing chlorine dioxide (ClO2) into their 8 MGD plant #2. As a result, he plans to make the same change at their 12 MGD plant #1.
USP Technologies completed North America’s first bulk delivery of peracetic acid (PAA) on July 29th, 2015 to Metro Vancouver’s Northwest Langley Wastewater Treatment Plant located in Vancouver, BC.
Ovivo Inc. (“Ovivo”) signed an unprecedented, multi-year agreement, with Microdyn-Nadir (‘’Microdyn’’) to service the membrane bioreactor (MBR) market.
The International Ultraviolet Association (IUVA) installed Dr. Kati Bell, the MWH Water Reuse Global Practice Leader, as the group’s new President at the biennial IUVA World Congress, February 1-3 in Vancouver, Canada.
TrojanUV has supplied their TrojanUV4000Plus UV disinfection system to Yorkshire Water Services of the UK.
Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, has launched a new, more energy efficient and virtually maintenance free generation of its Wedeco SMOevo and PDOevo ozone oxidation systems.
Desalitech was named the winner of the 2016 Global Water Award for Breakthrough Water Technology Company of the Year.
MIOX Corporation, the technology leader in on-site chemical generation, announced it will launch the new RIO Zuni at the Association of Water Technologies (AWT) Conference on September 19, 2012 in Palm Springs, CA.
ClorTec systems have been a proven, cost-effective, reliable and safe alternative to chlorine gas and bulk sodium hypochlorite since 1995.
Blue Earth Labs (http://www.BlueEarthLabs.com), a leading specialty water chemical research and development company building an innovative chemical platform to solve water infrastructure issues, today announced pHaze™, its non-hazardous formulation for neutralizing acidic runoff generated during chemical water treatment with the Company’s line of Floran® and neXt™ surface cleaning and filter rehabilitation products.
Clean Chemistry, a chemical technology company, announced recently that its patented PeroxyMAX chemistry has received EPA (Environmental Protection Agency) biocide registration.
BioLargo Inc. (OTCQB:BLGO), an innovator of sustainable science and technology and a full-service environmental engineering company, announced today the completion of a study that demonstrates the effectiveness of its Advanced Oxidation System (“AOS”) water treatment platform for treatment of poultry wastewater and municipal tertiary wastewater.
The Swedish ozone generator manufacturer Primozone has been elected to join the American Water Works Association’s ozone standards committee.
Ozone treatment efficiently removes many micropollutants contained in wastewater, but in some cases, it can lead to the formation of toxic byproducts.
The Swedish ozone generator supplier, Primozone, has been awarded further more funding.
Xylem, a leading global water technology company focused on addressing the world’s most challenging water issues, has won a contract valued at approximately $2.75M to supply Xylem’s Wedeco-brand ultraviolet (UV) technologies to a wastewater treatment facility in the Vigo region of southwest Spain.
The U.S. Environmental Protection Agency has issued a legal order directing the Vaquería La Josefina Dairy Farm to stop wastewater from flowing from a manure storage lagoon on the farm into a nearby creek that is a tributary of the Río Culebrinas.
New technologies implemented by the Metropolitan Water Reclamation District of Greater Chicago (MWRD) to disinfect water through ultraviolet rays have earned high praise from the American Council of Engineering Companies (ACEC) Illinois Chapter.
Wastewater disinfection takes place after primary, secondary and sometimes tertiary wastewater treatment. It is typically a final step to remove organisms from the treated water before the effluent is released back into the water system. Disinfection prevents the spread of waterborne diseases by reducing microbes and bacterial numbers to a regulated level.
A variety of physical and chemical methods are used to disinfect wastewater prior to it being released into natural waterways. Historically, the chemical agent of choice for municipal wastewater treatment has been chlorine, due to its disinfecting properties and low cost. However, the rising cost of chlorine and concerns that low chlorine concentrations can still be toxic to fish and other wildlife, has given rise to more physical methods of wastewater disinfection being adopted such as ozonation or ultraviolet (UV) light.
The use of ozone as a disinfection agent has the added benefit of increasing the dissolved oxygen content of the treated wastewater. However, because the ozone has to be generated, ozonation can require prohibitive up-front capital expenditure compared to traditional chlorination. UV disinfection has been growing in popularity as a wastewater disinfection method, in large part because of the life-cycle economics of the equipment and the fact that, like ozone, there is no toxic residual.