In April 2013, City Utilities started up three Microclor Model MC‐1500 skid systems, each rated at 1,500 pounds per day of free available chlorine.
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 Bissell Point Wastewater Treatment Plant is the largest wastewater treatment facility in Missouri with an average flow rate of 123 MGD. In the mid-1980s, the facility expanded to provide secondary treatment. The goal of the upgrade was to select a reliable process that would achieve high-rate BOD removal.
The Village of Waterbury Wastewater Treatment Plant (WWTP) is located on the Winooski River floodplain, which poses challenges from significant flooding during the spring runoff and storm seasons to strong algal blooms in late spring.
As part of its Long Term Control Plan to reduce combined sewer overflows (CSOs) to the Merrimack River, the City of Nashua, NH constructed a new Screening and Disinfection facility (SDF) to reduce untreated discharges of CSOs to the Merrimack River.
The City of Hannibal, Missouri, sought a cost effective disinfection technology to meet upcoming National Pollutant Discharge Elimination System (NPDES) permit. Read the full case brief to learn how the full-scale test confirmed that VigorOx WWT II is a cost effective solution for this plant to achieve the disinfection goals.
The City of St. Helena, CA, uses a municipal wastewater system with aerated lagoon and an average flow rate of 0.5 million gallons per day. The performance of existing chlorination process becomes less effective during some periods of summer and fall months, and the city sought a cost effective technology that could provide more stable disinfection performance over a broad range of pH conditions and could easily retrofit the existing system.
The Valley East Wastewater Treatment Plant (Sudbury, Ontario, Canada) hired an engineering firm to evaluate three disinfection options including chlorination followed by dechlorination, ultraviolet (UV) light irradiation and VigorOx WWT II. Read the full case study to learn more.
Wastewater treatment plants are required to disinfect effluent prior to discharge in order to destroy any pathogenic organisms present and minimize public health concerns.
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.
A refinery needed to upgrade the wastewater treatment system to prepare for expected changes brought about by the use of a new crude feedstock with elevated concentrations of TDS and conductivity. Veolia Water Technologies supplied an AnoxKaldnes Moving Bed Biofilm Reactor (MBBR) treatment system to reduce the BOD and ammonia in the effluent.
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.
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.
Sterling Construction Company, Inc. (NasdaqGS:STRL) (“Sterling” or the "Company”) recently announced that Myers & Sons Construction (“Myers”), was awarded a $21.7M wastewater treatment facility project in Malibu, California.
Morgan Advanced Materials has applied its world-leading ultrasonic transducer technology to water purification, helping to deliver components which improve performance in wastewater applications.
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.
Sun Chemical Advanced Materials is pleased to announce that the Official SEPAREL® Website is now live. This new, immersive website details how SEPAREL assists the degasification and aeration of water by utilizing a proprietary non-porous membrane from the DIC Corporation.
Xylem, a leading global water technology company, will share expertise and highlight cutting-edge, sustainable solutions to optimize the efficiency of ozone oxidation and disinfection processes at theInternational Ozone Association’s Pan American Group Conference taking place in Las Vegas, Nevada next week (August 28-31).
In many parts of the world, the only way to make germy water safe is by boiling, which consumes precious fuel, or by putting it out in the sun in a plastic bottle so ultraviolet rays will kill the microbes.
Regional Utilities of Walton County, Florida has selected Evoqua, along with its sales partner AAG Electric Motors & Pumps, Inc., for a turnkey project to expand their biological wastewater treatment plant located in the coastal resort community of Point Washington.
Xylem,a leading global water technology company dedicated to solving the world’s most challenging water issues, successfully reduced the amount of sludge produced by a wastewater treatment plant in Ardea, Rome in Italy by 43 percent, saving more than €170,000 annually in landfill costs.
Inadequate sanitation services impact Indonesia’s economic growth potential, says the World Bank’s latest report on the country’s urban sanitation.
Her Majesty’s Ambassador to the Kingdom of Morocco, HE Mr. Clive Alderton, recently toured Biwater’s turn-key wastewater project in Aourir while under construction.
Xylem, a leading global water technology company dedicated to solving the world’s most challenging water issues, announced recently that its Wedeco brand – a pioneer in chemical-free, sustainable water treatment technologies – is this year celebrating its 40th anniversary.
During a monthly meeting co-sponsored by the Lake Michigan States Section of the Air and Waste Management Association and the Union League Club’s Environment and Public Affairs Committees, Metropolitan Water Reclamation District of Greater Chicago (MWRD) Executive Director David St. Pierre offered a glimpse into the future of the wastewater treatment agency.
Xylem, a leading global water technology company dedicated to solving the world’s most challenging water issues, has been awarded a $1.25M contract to provide advanced treatment technology to the South Wastewater Treatment Plant in the city of McAllen, in Texas, USA.
A report concludes that blooms of toxic cyanobacteria, or blue-green algae, are a poorly monitored and underappreciated risk to recreational and drinking water quality in the United States, and may increasingly pose a global health threat.
According to a new report by Allied Market Research titled "UV Disinfection Equipment Market - Size, Industry Analysis, Trends, Growth, and Forecast, 2013-2020", the global UV disinfection equipment market has a potential to reach $2.8B by 2020, registering a CAGR of 15.3% during 2014-2020.
Ultraviolet (UV) treatment specialist Hanovia and the Industrial Division of its US sister company Aquionics have launched a new UV Application Center in Shanghai, China.
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.