In the past several years, Aquarion Water Company had been monitoring their system’s THM formation and attempting to lower them through treatment and distribution system changes. Aquarion engineers decided that reducing THM formation in the Laurel High Service Clearwell at the Stamford Water Treatment Plant (WTP) would eliminate concerns of elevated THM formation in the distribution system served by the WTP.
In an effort to lower operational costs and extend the life of the dewatering centrifuge, operators in Springboro, OH, began to look at the polymer activation equipment in use at the plant. The Polyblend® M-Series emulsion polymer activation systems had been in steady operation for over 10 years. The equipment still performed reliably, but operators were interested in ways to achieve greater efficiency. They were aware of the new Polyblend® Magnum mix chamber, with its enhanced two-zone mixing energy.
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.
Chatsworth Water Works Commission provides both water and wastewater services to the 5,000 residents of the cities of Chatsworth and Eton, GA.
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.
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 Environment Research Foundation will begin new studies addressing Ebola and antibiotic resistance challenges.
A scientific breakthrough has taken an emerging biotechnology a step closer to being used to treat wastewater in the Developing World.
Parkson will showcase their innovative water and wastewater treatment equipment via virtual reality at WEFTEC, the Water Environment Federation’s 90th conference to be held in Chicago, IL (exhibition October 2-4).
Many harmful substances in waste water stubbornly resist being broken down by biological waste water treatment plants. Fraunhofer researchers have developed a photochemical reaction system in which water can be reliably treated at high flow rates by UV light without having to add chemical catalysts.
Pulsafeeder, a global leader in fluid handling technology since 1942, today announced the availability of “Just-in-Time” standard Chemical Feed Systems for its Eclipse Series and PulsaPro Series dosing pumps
World Water Works, Inc., a leading designer and manufacturer of wastewater treatment solutions, announces their IDEAL Moving Bed Biofilm Reactors (MBBRs) for BOD removal, nitrification, and denitrification at municipal treatment plants.
The ribbon has been cut at the Terrence J. O’Brien Water Reclamation Plant (WRP) in Skokie, Illinois.
U.S. Environmental Protection Agency (EPA) has awarded $2,544,000 to the South Dakota Department of the Environment and Natural Resources to help protect human health and the environment through a Nonpoint Source Program Clean Water Act Section 319 grant.
Ohio EPA has finalized the 2018 Program Management Plan for the Water Pollution Control Loan Fund (WPCLF). The fund provides financial and technical assistance for projects that improve the quality of Ohio's rivers, streams, lakes and other water bodies.
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.
Deepika Kurup from Nashua, N.H. was named the U.S. winner of the 2014 Stockholm Junior Water Prize (SJWP)—the most prestigious international competition for water-related research—during a ceremony this past weekend at the Hilton Dulles Airport Hotel in Herndon, Va.
After successful completion of land-based tests with marine, brackish and fresh water – all using the current ballast water treatment system design – a test report package for PureBallast has now been finalized by the independent lab DNV GL.
ClorTec systems have been a proven, cost-effective, reliable and safe alternative to chlorine gas and bulk sodium hypochlorite since 1995.
A report concludes that blooms of toxic cyanobacteria, or blue-green algae, are a poorly monitored and underappreciated risk to recreational and drinking water quality in the United States, and may increasingly pose a global health threat.
A $15M upgrade to the Morgan Water Treatment Plant began this week, to help meet future demand growth and further enhance the quality of drinking water SA Water supplies to more than 130 000 regional South Australians.
World leader in electrochemical technologies enhances its water and wastewater treatment portfolio by adding MIOX technologies to its product line.
The County of New Castle, Delaware has awarded the contract to upgrade the UV disinfection system at their wastewater facility to ETS-UV by Neptune Benson. The upgrade will convert the existing chlorine based system to a state of the art closed vessel UV system.
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.