Significant innovation had occurred in the 17 years since the TrojanUV4000™ was installed at the Murfreesboro Water Resource Recovery Facility. Advancements associated with system efficacy, simplified maintenance, and energy efficiency had been introduced, all of which correlate to cost savings. Such advancements can all be found in the TrojanUVSigna™ – the UV system that was selected for the upgrade.
Located in New Haven County, Connecticut, in the eastern USA, the wastewater treatment plant in Meriden has a design inlet flow of 43,911 m3/day (11.6 mgd) with a maximum inlet flow of 143,386 m3/day (38.0 mgd). Upgraded in the 1960s and 1980s, the plant has been in existence since the 1800s.
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.
The first Santa Claus Club in the United States was formed in 1946 by World War II veterans to provide gifts for critically ill children in the village of Valatie, New York. It has since grown to the point that on Christmas Eve, a Santa visits every child in the village below the age of 10 and gives him a gift.
The primary fluid used in hydraulic fracturing is water and the completion process can require from 2.75 - 8.25 million gallons per well. This white paper discusses the different water management and instrumentation requirements for controlling and processing drilling mud, hydraulic fracturing fluid, flowback water and produced water.
The City of Windsor in Ontario, Canada, owns and operates two wastewater treatment plants.
The term wastewater can be applied to a wide range of water sources from municipal sewage to storm runoff to industrial discharge water. By Michael Sheedy, Vice President of Technology and George Di Falco, Marketing Communications, Eco-Tec Inc.
The City of Chester, IL was getting only about 6 months life out of the mechanical seals in their former non-clog lift station pumps. While replacing seals twice per year was difficult and expensive, the more serious problem occurred when the seals failed with the Mississippi River at flood stage and with the sealed lift station underwater.
A comparison of conventional and recycled thermoplastic systems
Wastewater facilities in various industries face challenges in day to day operations. Some of these treatment issues can be addressed by incorporating high-purity oxygen into the wastewater treatment process. Below are three common wastewater treatment issues and how oxygen may help.
This application note presents comparative data obtained on influent and effluent wastewater samples using laboratory and on-line TOC analyzers employing the heated sodium persulfate oxidation technique in USEPA-approved methods 415.3 and SM 5310C.
The NEOSEP® MBR system features Kruger’s uniquely designed K-120C and K-240C flat sheet membrane modules. The modules offer several innovative design features that enhance ease of installation, operation and maintenance. This includes an integrated central lifting eye, offering an incredibly well balanced module that makes installation and retrieval a simple and stress-free process.
Microbial contamination of food and beverage products is a potentially catastrophic occurrence resulting in foodborne illness or food spoilage. The same nutritive properties that render cheese and dairy products such a valuable food also provide an ideal growth medium for microbes if contamination occurs.
3M™ Liqui-Cel™ Membrane Contactors offer a modular skid option for off-shore oil platforms that is significantly smaller and lighter than traditional vacuum towers.
The analysis of Total Organic Carbon (TOC) in seawater can be both challenging and expensive. The concentration of organic carbon in seawater is of considerable interest. The effect this matrix can have on TOC analyzers can lead to rapid consumable turnover, costly maintenance and repairs.
There are several basic methods for reducing harmonic voltage and current distortion from nonlinear distribution loads such as adjustable frequency drives (AFDs). Following is a description of each method, along with each method’s advantages and disadvantages.
Hypochlorite has some significant environmental concerns associated with DBPs and residual toxicity.
The Dallas County Water and Sewer Authority (DCWSA) in Selma, Alabama recently found itself in a tough spot: under the scrutiny of the Alabama Department of Environmental Management (ADEM). The wastewater treatment system needed better means for control. Ammonia, TSS, cBOD, and TKN readings were out of compliance. Then they discovered a new testing method known as simplified-TKN (s-TKN), and with it, better process control to achieve regulatory compliance. By Andrew Antonio, Municipal Wastewater Market Manager and Derek Walker, Applications Development Manager
Levels of phosphorus, a chemical element that promotes organic growth, must be controlled in wastewater coming from beverage, food and dairy processing plants. Failure to control phosphorus accurately has a negative impact on water quality and can lead to large fines.
East Africa’s Kariba Dam is almost empty due to diminishing rains. In Brazil, Sao Paulo’s reservoirs were reduced to dried mud three years ago, and experts say the city is heading toward another dry spell. Catastrophic floods recently wreaked havoc in southern England, Texas, and Bangkok.
It’s a four-peat.
For the fourth consecutive year, the University of Maryland, College Park has won high honors in EPA’s Campus RainWorks Challenge, a national collegiate competition to design the best ideas for capturing stormwater on campus before it can harm waterways.
While point level measuring approaches are regarded as simple and user-friendly, they lack the capabilities of more sophisticated continuous measuring instruments.
Growing cities are generating higher volumes of wastewater and putting a strain on clean water supplies, calling for solutions that extract value from “waste” and ensure the sustainability of resources — with the added bonus, or imperative, of protecting the environment.
A Q&A with Gary Wong, chairman of the SWAN North American Alliance
Ralph Spagnolo and Ellen Bryson know their way around the state capitals in EPA’s Mid-Atlantic Region. The regional Water Protection Division employees have been on the road helping states launch an innovative online mapping tool that prioritizes sites for watershed preservation or restoration.