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 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Storey County, NV, just southeast of Reno, needed to replace an outdated wastewater treatment plant that serves the historic communities of Virginia City and Gold Hill.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.
The Honouliuli Water Recycling Facility (WRF) includes filtration and UV disinfection to treat to Class R-1 reuse standards for various uses, including irrigation. In order to maintain high-level reuse, simplify maintenance, and reduce operation costs, the Honolulu Board of Water Supply decided to replace its 15-year-old TrojanUV4000™ with a TrojanUVSigna™. With the high cost of power in Hawaii, this system upgrade will provide significant power savings (estimated at 75%) and will enable equipment payback in less than 2.5 years.
In 2016 Hillsborough County Public Utilities, a forward thinking organization, initiated the first direct potable reuse pilot project in Florida. In its efforts to utilize 100 percent of its reclaimed water, the progressive utility created a successful program to effectively suspend surface water discharges. Read the full case study to learn more.
The Hudson River, in the Capital District of Albany, NY, is a popular recreational area for boating, swimming and fishing. Unfortunately combined sewer overflows following storm events and snow melt from sewer systems dating back to the 1800’s were causing increased fecal coliform counts which in turn resulted in health alerts and limited access to the river. After considering several alternatives, the Albany County Sewer District selected a Wedeco Duron 60i2-2.5X4, with high power Ecoray 600W lamps, for their disinfection system.
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.
Ozoniers.com, a brand of Qingdao Danjia Machinery, is solely into wastewater treatment research and development.
With accelerating global concerns about the need for water, air, and surfaces disinfection, the International Ultraviolet Association (IUVA) announces the 2017 IUVA Americas Conference, February 5-8, 2017 in Austin, Texas.
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.
Pinnacle Ozone Solutions, a leading supplier of ozone process technology and equipment is pleased to announce the addition of Goble Sampson Associates, Inc. to its sales network.
Biwater has been awarded a turn-key project to design and construct a new wastewater treatment plant in the city of Aourir, a tourist destination positioned centrally along Morocco’s extensive coastline.
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.
The ribbon has been cut at the Terrence J. O’Brien Water Reclamation Plant (WRP) in Skokie, Illinois.
RWL Water, a global leader in water, wastewater and reuse solutions and Química Apollo, one of the leading Mexican companies in chemical treatment services to the oil and gas, power and general industries, are pleased to announce the creation of a joint venture in Mexico.
Faith Critzer, a food safety specialist with University of Tennessee Extension, will lead a new multistate research and outreach project to help fruit and vegetable growers mitigate the risks their water sources might pose to the safety of their produce.
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.
After the completion of an extensive pre-selection and evaluation process, TrojanUV has been selected as the UV supplier for the disinfection conversion and upgrade project at the Ashbridges Bay Wastewater Treatment Plant in Toronto, Ontario.
A Fall River, Mass. company has taken significant steps to make its chemical manufacturing, warehouse, and distribution facility safer following an Administrative Compliance Order issued by EPA in March 2014 that identified several dangerous conditions arising from the company’s use, storage and handling of chlorine and ammonia.
Kruger will implement two 12.5 MGD ACTIFLO systems for Warwick’s Advanced Wastewater Treatment Facility phosphorus removal upgrade, as part of the city’s wastewater facility’s nutrient removal upgrade plan.
WE&RF recently signed a contract with MWH Americas Inc. to advance the science of peracetic acid (PAA) disinfection, as well as to examine design, implementation, and operational considerations.
Engineers at wastewater recycling plants can rest easy knowing that their methods for minimizing the formation of a potent carcinogen are targeting the right chemical compound.
The UVT-LED-H handheld UV transmittance monitor delivers fast and accurate UV transmittance readings in any applications employing UV disinfection.
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.