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.
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.
The Rahway Valley Sewerage Authority (RVSA), which operates a large wastewater treatment plant in New Jersey, embarked on a green co-generation waste-to-energy project to power a portion of its operations. The plant’s management team became interested in pursuing the gas-to-energy power co-generation system for both environmental and cost reasons.
The Bordeaux region of St. Thomas had a pressing need for a wastewater treatment plant that produces high effluent quality. Its existing plant was old and did not meet regulation nor industry standards. Fluence, together with its partner SD&C Inc., built an MABR-based wastewater treatment plant from the ground up, utilizing whatever existing pieces of equipment could be used from the old plant.
Fairmont, Minnesota, known as the City of Lakes, is located in Martin County in southern Minnesota. The city’s water treatment plant serves a mix of customers including approximately 3,900 residential taps, 500 commercial and 17 industrial customers. Looking to the future, Fairmont city leaders began to investigate upgrading the city’s water treatment plant in 2010. The existing plant had been in operation for well over 70 years and relied on gas chlorine for disinfection.
Storey County, NV, just southeast of Reno, needed to replace an outdated wastewater treatment plant that serves the historic communities of Virginia City and Gold Hill. The new site was on the side of a hill, presenting challenges for the design of the plant and the orientation of its processes. Also, the new plant area was entirely within a district on the National Register of Historic Places. Read the full case study to learn how the new modular design allows for an efficient wastewater treatment solution.
When the Cobb County-Marietta Water Authority (CCMWA) anticipated the need to upgrade the Hugh A. Wyckoff water treatment plant, they turned to granular activated carbon (GAC) technology after vetting several alternatives. The plant, a wholesaler in a two-plant system, processes up to 72 million gallons per day and serves about 350,000 people. Comprising of Wyckoff and the James E. Quarles treatment plant, CCMWA is the second largest water provider in Georgia.
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 North Columbus Resource Facility recently completed a $12-million replacement of its settled water filtration, removing the existing Wheeler filters, their three-part media and 10-inch poured concrete underdrains, which were no longer efficient.
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.
When Plainfield, IN, needed to double their permitted capacity from 2 MGD to 4 MGD at their South wastewater treatment plant, they faced a dilemma. Like most treatment plants, space is at a premium, and compact design was needed not only for the current expansion, including the addition of a post aeration structure, but to preserve as much room as possible for projected future expansions.
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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.
For a low-cost method of measuring disinfection efficiency and contamination levels, Cole-Parmer presents the new GreenLight® Environmental Bacterial Count Systems.
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").
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.
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.
Envirocleanse LLC, division of Charter Brokerage, a BERKSHIRE HATHAWAY company, announces the completion of all land-based and shipboard testing for its patented inTank™Ballast Water Treatment System.
Water and wastewater treatment refers to enhancing the quality of water by eliminating contaminants, solid particles and disease causing microorganisms through the use of various technologies.
The ribbon has been cut at the Terrence J. O’Brien Water Reclamation Plant (WRP) in Skokie, Illinois.
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.
Cermaq aims to be leading in technology development that contributes to sustainable food production. FlexiFarm strengthens the competitive advantages of fish farming in coastal areas and addresses the concerns raised by politicians, authorities, NGOs, our customers, and not at least by the industry itself.
Neptune Benson, a leading manufacturer of water filtration products serving the aquatics, industrial and municipal markets, is pleased to announce that Emmett Jorgensen has joined the company as the Corporate Director of Marketing.
Tucson Water’s Advanced Oxidation Process (AOP) Water Treatment Facility was awarded the 2015 Grand Prize in Design from the American Academy of Environmental Engineers and Scientists (AAEES).
With accelerating global concerns about the need for water and air purification solutions, the International Ultraviolet Association (IUVA) announces the IUVA 2016 IUVA World Congress & Exhibition, January 31 to February 3, 2016 in Vancouver, Canada.
At a ceremony recently in Nashville, EPA and the Tennessee Department of Environment and Conservation (TDEC) officials recognized seven drinking water and wastewater utilities throughout Tennessee for their efforts to reduce energy demand at their facilities.
The Village of Oostburg has requested approval from the Wisconsin Department of Natural Resources for improvements to its wastewater treatment plant.
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.
AquiSense Technologies is pleased to announce that it has entered into a collaboration agreement with International Light Technologies (ILT) whereby ILT sensors will be offered in combination with the AquiSense PearlBeam, a bench-scale UV device for research applications.
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.