The UV disinfection system at the Plant 20 Wastewater Treatment Plant was installed in 2002, but over the years staff continued to struggle with PLC and controls-related issues, ballast failures, and water level management. An overhead crane was needed to operate the water level management device, and water level fluctuations of 12” were common, which contributed to an increase in fouling on the quartz sleeves.
The climate in Southgate, Ontario, is considered cold and temperate with significant rainfall throughout the year. Temperatures in winter average around -10°C and can drop as low as -30°C to -40°C for brief periods of time, which can wreak havoc on the local water storage tanks and distribution piping. Read more to learn how the installation of PAX Mixers has kept the tanks free from ice and has shown an improvement in disinfectant residual levels.
The Chief Operator for a surface water treatment plant (SWTP) reports that replacement of a troublesome vacuum liquid feeder for poly aluminum chloride (PACl), with a more advanced vacuum liquid feeder, ended the threat of a process upset for operations staff that was caused by the previous unit not being able to hold a constant feed rate. The ability to provide a consistent feed is needed as a key element in the plant pre-treatment process, which features turbidity reduction and clarification.
In 2008 Texas was facing an extended drought and the City of San Angelo was weighing its alternatives. The City felt the Hickory Aquifer well field was the best water option available, but this water contained significant amounts of radium and iron.
The City of Silverton is known as Oregon’s Garden City and sends one million gallons a day of treated effluent to the Oregon Gardens, returning the remainder to Silver Creek.
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 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 Baia Mare Aurul gold mine in North Western Romania suffered a historic catastrophe in January 2000, when its dam burst, streaming out 100,000 cubic meters of waste water, largely contaminated with cyanide, commonly used in the process of mining gold, into tributaries of the Tisza River, a major waterway in Hungary.
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.
U.S. Secretary of Commerce Penny Pritzker presented Bio-Microbics, Inc. with the President’s E” Star Award for Exports at a ceremony in Washington, DC. The President’s “E Star” Award (having received the prestigious “E” Award four years prior for eligibility) is the highest recognition any U.S. entity can receive for making a significant contribution to the expansion of U.S. exports.
Fluence Corporation Limited announced recently that it has secured a contract from the Yiyang City government for the deployment of an Aspiral L4 smart-packaged MABR-based solution (formerly known as C-MABR) for use in a municipal wastewater treatment plant. The plant will be located in Xielingang Township, Yiyang City, Hunan province, China.
Since 1996, a wastewater treatment plant serving the Town of Cave Creek, AZ, has drawn numerous complaints from residents and reached the end of its useful life. Located in the middle of an affluent neighborhood with minimal setbacks and minimal odor control, the plant was considered both an eyesore and a source of noxious odor, particularly to golfers playing on an exclusive course located nearby.
Neptune Benson, a leading manufacturer of commercial filtration systems, ETS- UV disinfection systems and accessories, effectively disinfects the wastewater for Eden Isle just west of Heber Springs, Arkansas.
Biwater and NeoTech Aqua Solutions have been selected for Padre Dam Municipal Water District’s new water reuse demonstration plant.
Neptune Benson has announced that its closed vessel ETS-UV system has received conditional acceptance from the California State Water Resources Control Board. The unit approved is an 800 watt, low pressure, high output, closed vessel UV system designed for high level reuse water disinfection.
PTG Water & Energy (PTG), innovator of onsite power generation technology optimized for craft breweries, has been selected by Smog City Brewing Co. to provide onsite electricity and process heat at its primary craft beer production facility in Torrance, California.
The UVT-LED-H handheld UV transmittance monitor delivers fast and accurate UV transmittance readings in any applications employing UV disinfection.
ICAP Patent Brokerage announces for license a multi-patented, revolutionary Advanced Oxidation Process (AOP) from Ecosphere Technologies, Inc. that is currently being used by Fortune 500 customers to reduce costs, increase treatment efficiencies and eliminate liquid chemicals from wastewater treatment operations around the United States.
Global leader of sustainable technologies, De Nora has named Dr. Mirka Wilderer to lead the company’s Water Technologies group as chief executive officer effective June 1, 2019.
Mazzei Injector Company, LLC, a manufacturer of innovative injection systems and fluid processing solutions, is pleased to announce the addition to the Mazzei team of Jim White as Regional Sales Manager.
Funded by Horizon 2020, the EU's biggest ever research and innovation programme, ECO-UV has as its central objective the"demonstration and characterisation of an innovative UV lamp and driving electronics technology for chemical-free water treatment and disinfection".
Ecosphere Technologies, Inc. (OTCQB:ESPH), a water engineering, technology licensing and innovative U.S. manufacturing company, today announced that its subsidiary, Ecosphere Exploration and Mining Services LLC (EEMS) has signed a Letter of Intent (LOI) with Dominion Water LLC of Sedalia, Colorado.
Ecolab Textile Care has signed an exclusive global agreement with Wisconsin based OMNI Solutions for its Smart Ultraviolet Light Advanced Oxidation System technology for commercial laundries.
As recycled water is increasingly used as a vital tool to address shortages and insure conservation, the International Ultraviolet Association (IUVA) is spotlighting the fast emerging implementation of ultraviolet technology (UV) to water reuse, as a way to help achieve water quality treatment targets at the 2018 IUVA Americas Conference, February 26-28 2018, Redondo Beach, CA.
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.
Xylem Inc., a leading global water technology company dedicated to solving the world’s most challenging water issues, has launched a cutting-edge, ozone-enhanced biologically active filtration system and multi-barrier solution for municipal wastewater treatment. Xylem’s Leopold Oxelia combines ozone, filtration and analytical instrumentation to deliver optimal wastewater treatment for water reuse and discharge into sensitive waters.
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.