The district manager for the Pinetop-Lakeside Sanitary District (AZ) reports that a special gas chlorination system, featuring unique components and controls, and manufacturer-supplied service, has effectively replaced a chlorine tablet system.
Petron Bataan Refinery wanted to expand production to process 180 thousand barrels of crude oil per day while changing its feedstock from Arab Light to less costly heavy and sour crudes.
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.
De Nora Water Technologies has been awarded the Frost & Sullivan 2016 Best Practices Award for its product line strategy leadership for water disinfection products in the Asia Pacific region.
Officials at BlueInGreen, LLC announced the water treatment company's latest SDOX-CS® installation Wednesday, bringing the world's most efficient gas dissolution technology to the Jefferson Parish Department of Public Works in Louisiana.
Many harmful substances in waste water stubbornly resist being broken down by biological waste water treatment plants. Fraunhofer researchers have developed a photochemical reaction system in which water can be reliably treated at high flow rates by UV light without having to add chemical catalysts.
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.
NeoTech Aqua Solutions Inc., the leader in high-efficiency UV systems for disinfection, Advanced Oxidation Processes, and TOC Reduction in water and water reuse will be participating at the AWWA ACE Conference in Boston, MA, June 8-11, 2014.
The consistent expansion of Brazil's urban population has spawned a parallel demand for potable water; the country is expected to require 570.0 cubic meters per second in 2015.
In May 2014, Wichita Falls, Texas found itself under a stage 5 drought catastrophe ranking during the second worst drought in the city’s history.
The Orange County (California) Water District (OCWD), recipient of this year’s prestigious Lee Kuan Yew Water Prize, continues to implement the expanded Evoqua MEMCOR® modular membrane system at its pioneering Groundwater Replenishment System (GWRS).
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.
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.
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.
The Chemours Company (“Chemours”), a global chemistry company with leading market positions in titanium technologies, fluoroproducts and chemical solutions, announces that the world leader in chlorine dioxide (ClO2) water treatment has adopted a new name.
The Indian Water and Wastewater treatment market is at growth phase and is expected to reflect high growth rate for the next five years.
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.
Blue Earth Labs (http://www.BlueEarthLabs.com), a leading specialty water chemical research and development company building an innovative chemical platform to solve water infrastructure issues, today announced pHaze™, its non-hazardous formulation for neutralizing acidic runoff generated during chemical water treatment with the Company’s line of Floran® and neXt™ surface cleaning and filter rehabilitation products.
The U.S. Environmental Protection Agency (EPA) commends the efforts of the South Carolina Department of Health and Environmental Control (SCDHEC), farmers, and landowners for improving water quality in the Enoree River watershed.
The Round Table (RT) of International Shipping Organisations (comprising BIMCO, the International Chamber of Shipping, Intercargo and INTERTANKO) is deeply concerned if the international convention to regulate ships’ ballast water comes into force in the near future without a realistic implementation schedule that recognises the timetable for US type-approved Ballast Water Management Systems (BWMS) to be available in sufficient quantities.
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.