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.
Fluence Corporation Limited (“Fluence” or the “Company”), a global leader in water and wastewater treatment solutions, recently announced the appointment of Arnon Goldfarb to the Board of Directors as a Non-Executive Director, effective immediately.
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.
As the United States forecast a surge in energy demand and consumption over the winter period, Biwater and NeoTech Aqua team up to highlight their energy-saving work in California, centred on a new and innovative water reuse demonstration project with the Padre Dam Municipal Water District.
Ecosphere Technologies, Inc. (OTCQB: ESPH), a U.S. technology licensing and innovative manufacturing company, today announced completion of manufacturing and delivery of an Ozonix® EF10M water treatment system for Brasil Clean Energy ("BCE"), an environmental services company and recent Ecosphere licensee in Brazil.
BlueTech Research has awarded Evoqua Water Technologies its Innovation Tracker Accreditation for Evoqua’s novel, innovative water technologies.
Mazzei Injector Company, LLC, the largest manufacturer of high efficiency Venturi injectors, is pleased to announce the promotion of Geoffrey Whynot to the position of President.
Silver Bullet, an award-winning, cutting-edge water treatment company, announces that its technology has been proven by third party researchers as an Advanced Oxidation Process or AOP.
The City of Oak Harbor has awarded the contract to supply the UV disinfection equipment for the wastewater plant improvement to ETS-UV by Neptune Benson.
Neptune-Benson, a leading manufacturer of commercial pool filtration systems, ETS-UV disinfection systems, and Lawson Aquatics components, is a proud to be chosen to supply their award-winning Defender® aquatic filtration system to the Lotte World Gimhae Waterpark in South Korea.
Kruger Inc., a Veolia business unit specialized in water treatment solutions for municipalities, will provide design services, process equipment and commissioning support to the Design Build Team of PC / CDM Smith as part of a contract from the District of Columbia (DC Water) to install its ACTIFLO® technology to process and treat wet weather flows.
Low-flow irrigation networks have become more in demand as agriculturalists have been working toward sustainability and saving water.
Peracetic Acid Market share is anticipated to cross USD 850 million by 2024 according to a new research report by Global Market Insights, Inc.
The webinar, advanced hollow fiber UF membranes improve performance in tertiary water treatment, will help you decide which membrane solution is best for your water treatment system.
Dow Microbial Control, a business group of The Dow Chemical Company, has received approval from the United States Environmental Protection Agency for its innovative, solid form of KATHON Antimicrobial.
Evoqua Water Technologies, an industry leader in mission critical water treatment solutions, recently announced it has acquired privately held ATG UV Technology Limited (ATG UV), a leading manufacturer of ultraviolet (UV) light disinfection systems used in a wide range of municipal, aquatics and industrial applications.
Pasteurization Technology Group (PTG), innovator of the only wastewater disinfection process that creates renewable energy, generated tremendous excitement when it shared the award podium with established industry powerhouses at the 86th Annual Technical Exhibition and Conference (WEFTEC® 2013) that took place in Chicago last week.
ENSERVCO Corporation (NYSE MKT: ENSV), a diversified national provider of well-site services to the domestic onshore conventional and unconventional oil and gas industries, today announced it has expanded its service mix with the launch of a new water management division -- Heat Waves Water Management, LLC ("HWWM").
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.