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.
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.
The City of Dundee is a growing community with a strong economy boasting three wineries within the city limits and several others in the surrounding Willamette River Valley. The City’s existing WWTP was nearing capacity, and the limited discharge to the Williamette River would not adequately support Dundee’s planned growth.
Facing new limits on acceptable levels of DBPs in the drinking water, as well as age-old complaints about the taste of the water during the summer algal bloom, the North Texas Municipal Water District turned to ozone disinfection as a possible alternative able to address both concerns.
In an effort to reduce reliance on dwindling surface and groundwater supplies in Texas, the Colorado River Municipal Water District (CRMWD) constructed a new Raw Water Production Facility (RWPF) in Big Spring. Big Spring is a 27,000-member community located in West Texas approximately 300 miles west of Dallas. This RWPF treats secondary wastewater to a standard that allows it to be re-introduced directly into the raw water supply for the water treatment plants of Big Spring, Odessa, and other communities in the region.
Read the full case study to learn how the County of Maui Department of Water and IMS determined that spent caustic used at the local wastewater treatment plant and the acid wash solution generated during the cleaning process could be neutralized on-site and disposed through the local wastewater treatment system.
Bion Environmental Technologies, Inc. (OTC QB/BB: BNET) announced today that it has filed a new patent application for its next-generation livestock waste treatment technologies.
ClorTec systems have been a proven, cost-effective, reliable and safe alternative to chlorine gas and bulk sodium hypochlorite since 1995.
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").
Aqua-Aerobic Systems, Inc. (Loves Park, IL) officially introduced the AquaNereda® aerobic granular sludge system during the company’s national training seminar on April 6, 2017.
BakerCorp, a leader in water treatment technologies, recently completed an emergency treatment solution in response to unexpected flooding at the plant of a large plastics and chemical manufacturer.
Process and Water, a leading manufacturer and designer of advanced water purification, filtration and chemical treatment systems, today announced that it has completed manufacturing and has shipped an industrial wastewater and recycling system as part of a larger system for a Universal Alloy Corporation manufacturing plant in Romania.
The Swedish ozone generator supplier, Primozone, has been awarded further more funding.
Savannah River Remediation LLC group evaluated 26 aquatic augmentation remediation technologies and selected NewTechBio's NT-MAX Lake & Pond Sludge and Muck Digester, a microbial based beneficial bacteria, in conjunction with Hexa Armor/ Rhombo cover manufactured by AWTT, Inc., to correct deficiencies with National Pollutant Discharge Elimination System requirements.
The Jacobi Group announces that production has begun at its newest coconut shell carbon activation plant, based at Cagayan de Oro on the island of Mindanao in the Philippines.
Stanley Consultants has been awarded two Engineering Excellence awards for design of the wastewater treatment expansion at the South Plant in Iowa City, Iowa.
The open access article for the June 2015 issue of Water Environment Research (WER) examines biopolymers production by mixed culture and their applications in water and wastewater treatment.
The Asian Development Bank (ADB) is helping the People’s Republic of China (PRC) improve the quality of wastewater management and reuse through a $240M private sector loan package to Beijing Enterprises Water Group Limited (BEWG), an integrated water infrastructure operator.
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).
The Water Environment Research Foundation has awarded the University of Cincinnati, Southern Nevada Water Authority, and Iowa State University with contracts to support further research on trace organic compounds (TOrC) and pathogens.
After the completion of third-party validation testing under the National Water Research Institute (NWRI) Guidelines, TrojanUV recently announced that its open-channel wastewater ultraviolet light disinfection system TrojanUVSigna™ has received conditional acceptance from the California Water Board’s Division of Drinking Water (DDW) Recycled Water Unit (RWU).
Xylem, a leading global water technology company dedicated to solving the world’s most challenging water issues, has been awarded a contract to provide advanced treatment technology to the Werdhölzli wastewater treatment plant in Zurich, the largest wastewater treatment facility in Switzerland serving 434,000 people.
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.
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.