The military plans to test water quality at hundreds of sites across the country amid fears that firefighting foam used in training operations has contaminated water sources with potentially carcinogenic chemicals.
A dioxane plume has become an issue for water providers and public health officials in Michigan.
Pollution from a nuclear power plant in Florida is endangering the drinking water supply and a nearby national park.
A new study demonstrates that nitrates in fertilizers pose a strong and enduring threat to drinking water.
As Vermont and New York undergo perfluorooctanoic acid (PFOA) scares, the chemical is grabbing attention from clean-water advocates who want to know why there is no federal drinking water limit on this industrial chemical.
The U.S. Air Force and the Centers for Disease Control are monitoring the health of people exposed to water contamination on a former Air Force site in New Hampshire while officials rely on new water-filtration systems to clean up nearby water sources.
Accurate flow measurement is often overlooked at a water treatment plant. Many operators look at flow as being what it is. In reality, accurately measuring your plant’s flow(s) is critically important for operational efficiency, from back-washing to chemical dosing and a host of other processes.
Hach’s off‐the‐shelf Real-Time Control System for Sludge Thickening (RTC‐ST) adjusts the sludge thickening process in real time. Thanks to the RTC-ST, a wastewater treatment plant improved thickened sludge consistency and gas production while reducing money spent on excessive polymer dosing and maintenance.
Jacobi Carbons Inc., the largest worldwide manufacturer of coconut shell activated carbon, will be celebrating it’s 100th birthday in 2016.
With more than 8,500 municipal installations over 40 years, TrojanUV is well-versed in UV disinfection. What’s next for the technology? Adam Festger, TrojanUV’s market manager for drinking water and environmental contaminant treatment, reveals new trends and products to Water Online Radio’s Todd and Kelly.
Welcome to the first edition of Disinfection Digest, a forum to share experiences using PeroxyChem’s VigorOx WWT II wastewater disinfection technology.
The City of Gordon Texas’s drinking water facility was struck by lightning. Thinking long term, and desiring the latest technology available, the City took this opportunity to upgrade their on-line instrumentation with a range of new continuous monitoring on-line instruments including chlorine analyzers, pH monitoring, temperature monitoring, and turbidity monitoring.
Aclara’s through-the-lid antenna lets you choose how to install communications modules in meter pits. You decide whether to reuse current metal lids or replace them with RF-permeable ones. Modules installed with the antenna provide equivalent communications performance to those mounted under RF-permeable lids.
Neptune Benson ETS-UV is used in Municipal, Industrial, and Recreational water markets. Many of our systems have been validated per rigorous industry specific standards.
Early in 2003, the City of Rome, Georgia, decided to upgrade their Blacks Bluff Waste Water Treatment Plant screening equipment.
The city of El Paso, TX, lies on the tip of the Chihuahuan desert, and it is not uncommon for a year’s worth of rain to occur in a matter of days during the summer.
This one's not on you, plant operators. Rather than a charge for utilities to aim higher in performance, the latest regulation to impact water treatment operations, as well as others, falls on equipment manufacturers — those who make pumps.
Name a contaminant, any contaminant, and chances are that the U.S. EPA’s new reference tool has you covered — or at least soon will. The recently revamped Drinking Water Treatability Database is set to include more than 200 contaminants, with detailed information on what they are, where they come from, and how to get rid of them.
The federal Lead and Copper Rule (LCR) is destined for changes attributable to hard times in Flint, MI, and the agreement from an EPA advisory council that lessons must be learned from the latest crisis.
For nearly a decade, public utilities that draw from surface waters have been contending with a developing regulation that is emblematic of the U.S. EPA and the systems under its charge.
The federal regulation for arsenic has been in place since 2002, and yet many utilities remain noncompliant. The culprit isn’t treatment capability, but cost. It happens that the most popular treatment technique is also quite expensive — but it doesn’t have to be.
With diminished rainfall, a depleted aquifer basin, near-empty recharge ponds, and an earthquake-vulnerable aqueduct system, the Santa Clara Valley Water District (SCVWD) in San Jose, CA, required additional water supplies to maintain regional economic vitality for its growing community.
Efficient control of microbial populations in municipal wastewater using peracetic acid (PAA) requires an understanding of the PAA decomposition kinetics.
A retreat and camp facility struggling with variable flow conditions and associated wastewater issues turns to a fixed-film treatment system designed just for that application. The results have far exceeded expectations: treatment quality surpasses permit levels and regular operation and maintenance requirements are at an all-time low.
To get the latest on the Promag 400 line of electromagnetic flow meters featuring specialized sensor technology, Water Online spoke with Endress+Hauser’s Flow Product Marketing Manager Nathan Hedrick and Environmental Industry Manager Alan Vance. The two served up details on the sensors’ web capabilities, proprietary Heartbeat Technology, and advanced safety features.
A major U.S. waste management company provided a sample of wastewater generated by an underwater ship cleaning operation. The sample was to be tested in the KASELCO laboratory for removal of copper and zinc and for improvement of clarity (suspended solids removal). Customer is interested in treating 50GPM.
In 2004, Headworks Inc. was selected to supply 22 screens to the George W. Kuhn Retention Treatment Basin (“GWK RT Basin”) located in the Detroit Metropolitan Area of Michigan.
Since 1969, Aqua-Aerobic Systems, Inc. has been a leader in the design, application and manufacture of wastewater treatment equipment and systems for municipal and industrial markets, worldwide. They are most noted for the Aqua SBR, the sequencing batch reactor, biological process, as well as now our cloth media filters.
The European Commission’s Aerosol Dispensers Directive (ADD) legislation (UN ADR 2013, 75/324/EEC) mandates that aerosol dispensers and small receptacles containing compressed gas (gas cartridges) must pass a leak-proof test before they are transported. Cascade’s CT2211 leak detection system detects and rejects leaking aerosol cans up to a rate of 500 cans per minute. The system is contactless, ensuring minimal product damage or contamination.
As part of an ongoing effort to improve efficiency and lifecycle costs across all of its projects, a Municipal Utilities Board in Albertville, Ala., set out to upgrade solids handling at the WWTP and pursue Class A biosolids certification, a U.S. Environmental Protection Agency (EPA) designation for dewatered and heated sludge that contains low levels of pathogens.
Precisely measuring and controlling the mixture of wastewater effluent, flocculants, and sludge is essential to efficient water treatment. The level/interface instruments that support the process liquid measurements must be capable of distinguishing between liquids with varying properties in order to detect the levels where the different liquids interface in the pond or tank.
This presentation will discuss the operation of a 4 MGD pressurized two-stage Ultrafiltration (UF) plant over a 14 month period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility, North Dakota.
Almost all wastewater collection system odor and corrosion problems are a result of the formation of sulfide. Sulfide is formed under the anaerobic conditions that typically exist in wastewater force mains.
Taking pH measurements may be the most common water quality testing performed around the world. From backyard pools to treatment plants serving millions, it has long been a reliable method of detecting red flags in water quality. But with rapid developments in sensor technology, is there room to innovate on such a routine practice? Water Online spoke with Thomas Roemer, the business development manager for KROHNE about the company’s efforts to do just that.
Brazos Electric Cooperative Power Plant in Cleburne, TX is a nominal 258 MW combined cycle gas fired power plant operating on AGC (Automatic Generation Control) load requirements. The plant uses approximately 54 million gallons of water per year for boiler feed water and NOx control of its combustion turbine.
The students at the University of Miami will know firsthand the importance of rethinking the way we handle wastewater and water with a Net-Zero water treatment system on site. The project showed the viability and feasibility to take buildings off the water grid to provide water recycling and how it can be achieved without raising the cost of high quality water.
Hinduja National Power Corporation Ltd. (HNPCL) constructed a 1040 MW coal fired power plant at Vishakhapatnam, Andhra Pradesh, India. The power generated from the plant is intended to supply to Andhra Pradesh, as well as to other states through interstate transmission system.
SCADA implementation or enhancement is a collaborative process. One of the hardest challenges is keeping up-to-date on the latest features available and determining whether or not the new benefits offset the cost of implementation.
The TETRA LP Block dual parallel lateral underdrain system delivers distribution of air and water during backwashing to enhance filter cleaning and extend run times. TETRA LP Blocks were developed to overcome problems with air/water distribution experienced with other systems.