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.
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.
AquiSense Technologies, the world leader in UV-C LED disinfection systems, has been wholly acquired by Nikkiso America, Inc in a cash deal. With over a half century of product development, Nikkiso has provided original technologies to a range of industries, including medical, aviation, life sciences, and microelectronics.
Evoqua Water Technologies LLC today announced that Ronald C. Keating has been named Chief Executive Officer, and will be appointed a member of the Board of Directors effective December 1. He joins the company from Contech Engineered Solutions LLC, where he has been President and CEO. At Evoqua, Mr. Keating succeeds Gary Cappeline, Interim CEO and AEA Investors LP Operating Partner.
The global water treatment systems market size is projected to be valued at USD 44.01 billion by 2025, according to a new report by Grand View Research, Inc., exhibiting a 7.1% CAGR during the forecast period. Rising water pollution, along with growing awareness of a healthy lifestyle, is predicted to boost the market.
Xylem, a leading global water technology company dedicated to solving the world’s most challenging water issues, announced recently that its Wedeco brand – a pioneer in chemical-free, sustainable water treatment technologies – is this year celebrating its 40th anniversary.
Morgan Advanced Materials has applied its world-leading ultrasonic transducer technology to water purification, helping to deliver components which improve performance in wastewater applications.
The Swedish ozone generator supplier, Primozone, has been awarded funding of a project for removal of pharmaceutical residue from waste water.
De Nora Water Technologies has been awarded the Frost & Sullivan 2016 Best Practices Award for its product line strategy leadership for water disinfection products in the Asia Pacific region.
Aquatech, a global leader in water and wastewater technologies for the industrial and infrastructure markets, is highlighting its LoWatt™ desalination technology at the 2015 IDA World Congress, Booth 721.
The International Ultraviolet Association (IUVA) is proud to announce the dates and location for the 2019 IUVA World Congress, taking place February 3-6, 2019 at the University of New South Wales (UNSW) in Sydney, Australia.
The U.S. Environmental Protection Agency is proposing to modify a cleanup plan originally issued in 1996 to address soil and groundwater at the AVX property at the Olean Well Field Superfund Site in Cattaraugus County, Olean, NY.
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.
Alcoa has entered into an agreement with Germany-based engineering and construction company, Bauer Resources GmbH, to commercialize Alcoa’s Natural Engineered Wastewater Treatment technology that mimics natural wetlands to sustainably treat wastewaters.
De Nora, a leading global electrochemical and water technology company, has unveiled its new expansion and upgrade of its factory in Suzhou Industrial Park.
Chemists have found a way to use sunlight to purify wastewater rapidly and cheaply, and to make self-cleaning materials for buildings.
The U.S. Environmental Protection Agency (EPA) and Justice Department’s Environment and Natural Resources Division announced recently a settlement with Cal-Maine Foods, Inc., one of the nation’s largest egg producers, that resolves Clean Water Act violations at the company’s poultry egg production facility in Edwards, Miss.
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.
Ozone treatment efficiently removes many micropollutants contained in wastewater, but in some cases, it can lead to the formation of toxic byproducts.
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.