WASTEWATER DISINFECTION ARTICLESMore From Wastewater Disinfection Articles
WASTEWATER DISINFECTION WHITE PAPERS & CASE STUDIES
The 2013 year was the driest in recorded history with many areas of the San Joaquin Valley reporting groundwater levels more than 100 feet below previous historical lows.
Replacement Vacuum Feeders For Hypo Treatment End Heavy Feeder Maintenance Burden At WWTP
The instrumentation supervisor for the City of Baltimore, MD’s 150-MGD Back River wastewater treatment plant (WWTP) reports that replacement of problematic vacuum feeders with more advanced vacuum feed units has ended heavy maintenance burdens associated with sodium hypochlorite (hypo) treatment of plant effluent. By Cliff Lebowitz
Disinfection Performance Testing Of High-Efficiency Ultraviolet Water Treatment Chamber
This is the second in a series of three white papers describing the design and performance of the NeoTech Aqua ReFlex™ treatment chamber. The first describes in detail the theoretical basis for the very high efficiency demonstrated by the chamber. The third paper describes how this chamber design leads to some highly desirable operational advantages beyond just energy ad cost reduction. By J. R. Cooper, Ph. D. and Gwynne Cavender, NeoTech Aqua Solutions, Inc.
Theoretical Operation Of High-Efficiency Ultraviolet Water Treatment Chamber
The NeoTech Aqua ReFleX™ water purification chambers are the most efficient and compact units available today. They require an order of magnitude less energy and less than 25% of the system volume to achieve the same or better purification result as competing chambers. This is the first in a series of three white papers explaining the benefits of these systems. By J. R. Cooper, Ph.D, NeoTech Aqua Solutions, Inc.
Three Channel's A Charm: MD WWTP Chooses UV
The Seneca Wastewater Treatment Plant (WWTP) receives wastewater from the greater Washington, DC area. Heightened security and concerns over the hazards of using chlorine gas had the Washington Suburban Sanitary Commission (WSSC) reconsidering their wastewater disinfection process equipment.
Removal of Metaldehyde & Environmental Contaminant Treatment - Lincoln, United Kingdom (Case Study)
Anglian Water (Anglian) is one of the largest suppliers of drinking water and wastewater services in the United Kingdom. As an alternative to ozone, Anglian decided to install a TrojanUVTorrent™ECT UV-oxidation system, as part of a multi-barrier approach, to ensure it produced a potable water supply that matched the high standards required by its regulators and customers.
Not All UV Lamps Are Created Equal
When the Summerville, GA, WWTP was looking to convert from chemical disinfection to UV, staff made the common mistake of purchasing low-price aftermarket lamps to keep costs down. Within eight months, the lamps in the UV system failed to meet expectations for permit requirements, and they had to gain approval for emergency procurement of WEDECO’S ECORAY® lamps as replacements. Today, the plant achieves the required disinfection with a significant reduction in energy use.
Genuine TrojanUV3000Plus Lamps Vs. Non-Genuine Lamps: A Side-By-Side Comparison (Case Study)
Perform Lamp Output And Aging Study On Trojan UV3000™ Lamps And Non-Genuine G64T5 Low Pressure UV Lamps
Top 10 Considerations When Converting To On-Site Hypochlorite
Transporting pure salt - the raw material needed to generate sodium hypochlorite onsite – is more cost effective, stable, and safer, than transporting and storing bulk sodium hypochlorite, or gaseous/liquid chlorine cylinders from local chemical suppliers. The conversion to on-site hypochlorite generation can be achieved by adhering to these design guidelines.
Conversion To UV Disinfection: A Natural Wastewater Treatment Alternative
The city of Auburn, AL has two wastewater treatment facilities – the Northside Water Pollution Control Facility and the H.C. Morgan Water Pollution Control Facility. In 2012, the H.C. Morgan facility was upgraded, and disinfection was converted from chlorine to UV. This case study will provide you with details about the selection process, why our TrojanUVSigna™ was chosen, and how we helped simplified the conversion from chlorine.
Size Your Ozone System In 5 Minutes Or Less
The most common questions about using ozone for the treatment of industrial wastewater relate to system sizing and pricing. Here are five quick rules of thumb to get a ‘ballpark size’ for your next ozone project.
Water resources are becoming more constrained. Obtaining surface or groundwater withdrawal permits is becoming increasing difficult. By Randy Turner, Technical Director, Swan Analytical USA
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WASTEWATER DISINFECTION NEWS
Xylem Wins 2014 Water Reuse Equipment Manufacturer Of The Year
Xylem, a leading global water technology company focused on addressing the world’s most challenging water issues, was awarded the 2014 WateReuse Equipment Manufacturer of the Year by the WateReuse Association at their 29th Annual Symposium in Dallas, Texas.
Power, Water And Wastewater Are Three Big Water Treatment Chemicals Markets
The power industry will buy 20 percent of the water treatment chemicals purchased by industries around the world in 2015. This is the conclusion of the McIlvaine Company in its Water and Wastewater Treatment Chemicals: World Market.
EPA And TDEC Recognize Tennessee Water And Wastewater Utilities For Energy Savings
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.
Ventura Water Completes Initial Evaluation Of New, Non-Toxic Wastewater Treatment Technology
Ventura Water, the City of Ventura’s Water Department, has completed an initial evaluation phase of a project to transition its wastewater treatment plant to a safe, non-toxic, sustainable technology to replace the current chlorine-based disinfection process in use at the Ventura Water Reclamation Facility.
Severn Trent Services To Showcase Latest Technological Developments In Water And Wastewater Treatment At Singapore International Water Week
Severn Trent Services, a leading global supplier of water and wastewater solutions, will be exhibiting at Singapore International Water Week from 1 – 5 July 2012. The company will be showcasing its innovative technologies for water and wastewater treatment on stand J28.
UV Disinfection System Recognized With Prestigious Aaees Grand Prize
Carollo Engineers, CDM Smith, and Greater Cincinnati Water Works (GCWW) were recently awarded a grand prize by the American Academy of Environmental Engineers and Scientists (AAEES) for their work on a state-of-the-art ultraviolet (UV) system at GCWW’s Richard Miller Treatment Plant (RMTP).
Silver Bullet System Recognized As An Advanced Oxidation Process Water Treatment Solution
Silver Bullet, an award-winning, cutting-edge water treatment company, announces that its technology has been proven by third party researchers as an Advanced Oxidation Process or AOP.
Primozone Elected To Join The American Water Works Association’s Ozone Committee
The Swedish ozone generator manufacturer Primozone has been elected to join the American Water Works Association’s ozone standards committee.
Advanced Water Treatment Plant Project To Explore New Source Of Water
In an effort to diversify its water supply, while also reducing its dependency on imported water, Padre Dam Municipal Water District is embarking on an advanced water treatment plant project to explore a new source of water in Santee, California.
New Castle, DE Replaces Open Channel UV With A Safer, More Efficient Neptune Benson ETS- Ultra Violet Disinfection System
The County of New Castle, Delaware has awarded the contract to upgrade the UV disinfection system at their wastewater facility to ETS-UV by Neptune Benson. The upgrade will convert the existing chlorine based system to a state of the art closed vessel UV system.
Geoffrey Whynot Named President Of Mazzei
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.
NeoTech Aqua Solutions, Inc. And Bluewater Bio International Sign Exclusivity Agreement For High-Efficiency Ultraviolet Technology
NeoTech Aqua Solutions, Inc., the industry leader in High-Efficiency Ultra-Violet (UV) water treatment systems, announces its first exclusivity agreement, signed with Bluewater Bio International, a leading global provider of innovative, high performance water and wastewater treatment technologies.
Aquionics And Hanovia Open UV Application Center In China
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.
Process And Water Chosen To Supply Industrial Wastewater And Recycling System For Manufacturer Of Aircraft Components In Eastern Europe
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.
Xylem’s Wedeco Brand Launches Next Generation, Energy Efficient Ozone Oxidation Systems
Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, has launched a new, more energy efficient and virtually maintenance free generation of its Wedeco SMOevo and PDOevo ozone oxidation systems.
WesTech Launches New Website
The new website will better assist municipalities, industries, minerals processing entities, engineers, contractors, and maintenance personnel in selecting equipment and solutions for water and wastewater processing applications.
Grundfos Digital Dosing Solves Maintenance Issues For Multinational Food Manufacturer
A multinational food manufacturer was experiencing problems with the sodium hypochlorite feed, commonly known as bleach or liquid chlorine, used for disinfection in its Nebraska factory.
ABOUT WASTEWATER 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.