With cuts being made to the budget of the federal EPA, individual states are having to step up and take matters of protecting drinking and source water into their own hands. Last year, none were more forceful with this change than Ohio.
As the U.S. EPA is reshaped under President Trump, some are concerned over what has been reported as an “exodus” of employees from the agency.
The latest trend in organic, natural culture may entice some consumers out there, but it is surely having treatment professionals shaking their heads.
The New Hampshire legislature plans to weigh a bevy of water bills this month.
As locales all over the country wrestle with lead contamination in their drinking water, one Michigan community is taking an aggressive approach to the problem.
The latest development in what has long been a hot button issue within the drinking water community could have major implications for the fluoridation debate.
The utility of the future will become an integral part of “smart cities.” These forward-thinking cities and utilities will have a complete sense of operations and millions of points of data streaming in at all times, allowing them to operate more efficiently and effectively. One component of the advanced water utility is already in the hands of many: smart meters.
Water professionals must plan and budget to meet new regulations on the horizon. They must find the best technology for removing emerging contaminants, such as perfluorinated compounds. Above all, they want to ensure the health and safety of their customers.
The task of managing the quantity and quality of potable water is unimaginable without online instrumentation to help water utilities to measure, treat and deliver drinking water to consumers. ABB’s Aztec 600 colorimetric and ion-selective electrode (ISE) analyzers have been designed to measure the key parameters that affect water quality – aluminium, iron, manganese, phosphate, color, ammonia and fluoride.
In spite of the recent abundance of water, many of California’s aquifers continue to balance on the edge of water scarcity. Decades of overpumping have reduced the amount of ground water available to supplement surface water resources diminished by drought. The Pure Water Monterey Ground Water Replenishment Project (Monterey Pure), addressed the need to replenish a local aquifer, by piloting Advanced Water Treatment (AWT) processes, to determine the best method to convert secondary wastewater into a pure water resource.
The sky is blue, grass is green, and, someday, your pumps are going to clog. It’s just another fact of life — or is it?
Gas control is an important concern in the beverage industry. Oxygen in the water can oxidize flavor components and shorten the shelf life of the product. Carbon dioxide can also have an impact on taste and pH of the product.
Utilities and industries need reliable and cost-effective treatment methods to protect critical water resources. Water professionals want proven technology to remove contaminants from drinking water, wastewater, and process water. These technologies must also be able to operate under a variety of flows and conditions.
MilliporeSigma is well known by many, but perhaps not within the water industry. That is changing, thanks to the company's work on total nitrogen (TN) testing, having recently developed a new method. Learn how and why MilliporeSigma branched out from life sciences and specialty chemicals into water, and what it means going forward.
Rather than scrap a pair of veteran pumps, a regional public water utility elected to have them rebuilt and reinstalled by experts to increase reliability, efficiency, and capacity.
Wastewater treatment plants (WWTP) are facing many challenges. Permits on nitrogen and phosphorus in the effluent water are progressively becoming stricter in order to protect surface waters from eutrophication. At the same time, plants are required to reduce both energy and chemical consumption and are often challenged with limited time and staff. In total, they are required to do more with less. In order to meet these challenges, a plant with a Sequencing Batch Reactor (SBR) in Green Lake, Wisconsin was upgraded with an advanced process control system – the OSCAR process performance optimizer with NURO controller.
With water treatment plant operators around the country relying on paper and pen to record critical quality data, there is an opportunity to make life easier online.
New analysis has found that perfluorinated compounds could be more than 20 times as prevalent in drinking water as previously thought. Will this revelation spur new regulatory action? And if so, what should that look like?
The legislative body responsible for ensuring that the federal government remains accountable has recently issued a report on the nation’s lead contamination problem. Its recommendations may be what finally save the country’s drinking water.
Everyone must answer to someone — even the rule-makers themselves. While it may seem to water and wastewater utilities that the U.S. EPA is the end of the line, there is yet another government agency that holds the EPA's feet to the fire.
The U.S. EPA has a job to do despite having its financial and human resources trimmed by the new presidential administration. Three U.S. EPA Office of Water directors, presenting at the 2017 Water & Wastewater Equipment Manufacturers Association (WWEMA) Washington Forum, laid out action plans for addressing the nation's most pressing water-quality threats in a manner that can (or must) achieve results efficiently.
Like many municipalities in urban and suburban areas, San Bruno’s source water comes both from its own groundwater supply and through a purchase agreement with a major water utility — in this case, San Francisco Public Utilities Commission (SFPUC). And, like many municipalities in California, SFPUC, along with San Bruno, switched from free chlorine to chloramines in 2003 largely to reduce disinfection by-products.
As fresh water supplies dwindle, whether due to drought, contamination, or overuse, desalination becomes more attractive. Desalination plants must ensure proper flow measurement to monitor the resource — so proper installation and operation of these meters is extremely important.
A key driver of economic development is the availability of water and wastewater services. For the Town and Village of Champlain, NY, this is no exception. To capitalize on the region’s economic potential and make more land available for new businesses, the Town and Village of Champlain are working together on the Shared Water Project, a major water system upgrade that includes installing 44,000 feet of AMERICAN ductile iron pipe.
A power plant in Egypt needed to use seawater from the nearby Red Sea as feed water for its plant processes. This case study shows how Fluence designed and built a new seawater demineralization plant that includes an ultrafiltration pretreatment, reverse osmosis, and mixed bed ion exchange.
A few years back, the Secretary of the International Farm Management Association (IFMA) announced that if the world’s population consumed food in the same manner as the citizens of the U.S., we would need 6 planet earths to keep up with demand. Now we know that the traditional diet of hamburgers, steaks and all-you-can-eat buffets across America’s heartland is slowly being diversified by a growing number of eating options, many far greener, i.e. Salad Works.
Most companies and agencies today operate with the concept of business sustainability. This is a holistic way of managing a business that includes environmental, social, and financial responsibilities. To meet this triple bottom line, companies must find ways to be cost-efficient, socially responsible, and eco-friendly at the same time.
The amount of insoluble matter present in drinking water is an essential quality indicator. Silt, sand, bacteria, spores, and chemical precipitates all contribute to the cloudiness or turbidity of water. Drinking water (DW) which is highly turbid can be unpalatable and unsafe. Consumption of even low concentrations of certain bacteria and other microorganisms can cause serious health effects. Consequently, an accurate and sensitive measurement of turbidity is vital for ensuring that drinking water is free of these contaminants.
The DEPOLOX® 700 M is designed for measurement and limited control tasks in the drinking and process water industry. The analyzer can incorporate up to six well proven measurement parameters: free chlorine, total chlorine, pH, oxidation reduction potential, conductivity and temperature.
While many water/waste water facilities stick with outdated supervisory control and data acquisition (SCADA) systems, Aguas de Saltillo in Mexico is taking a different path and accelerating toward Industry 4.0 — and is seeing numerous benefits today.
Unless you spent the last election cycle hiding under a rock (and no blame if you did), you are no doubt aware of the growing rift between the two major political parties of the United States. As reported in The Atlantic citing polling from the Pew Research Center for the People and the Press, those who identify as Democrats are becoming more liberal and those identifying as Republicans swing ever more conservative.
The overall wastewater treatment process is complex, and each step is integral to ensuring water is properly purified. Effluent ends up in the plants, containing substances that must be removed before the water can be properly cleaned and returned for use. The range of potential contaminants is almost endless, and can include food, pulp, waste, or other substances. Afterwards, the water requires further scrubbing, with the aid of bacteria. It is in this part of the process that compressed air (ideally provided by energy-efficient rotary lobe blowers) plays a vital role.
As regulatory requirements become more stringent, utilities and businesses look for more effective ways to remove contaminants. Technological improvements in water treatment include various forms of advanced oxidation processes. Calgon Carbon is a global leader in the activated carbon industry with complementary expertise in ultraviolet light (UV) technology. Water Online interviewed Steven Day, Director Product Management/Marketing, to find out more about UV oxidation and how the technology can help to improve water quality.
Today, over-the-counter and prescription drugs have become a serious threat to our water systems. Ozone (O3) is a naturally occurring compound in the form of a gas that is a powerful oxidizer and strong disinfectant. Water can be efficiently and effectively disinfected with Mazzei® Venturi injectors, GDT™ ozone technology, and Mazzei Pipeline Flash Reactors.
Utilities continually face new challenges. Where treatment facilities were once expected to simply disinfect the water, they must now avoid creating disinfection byproducts during the process. New and more stringent regulations require removal of additional micropollutants and emerging contaminants. Finding the best technology to accomplish these goals can be difficult.
Activated sludge has been a cornerstone of wastewater treatment since the early 1900s. Over the years, variations of the activated sludge treatment process have surfaced. These variants were efforts to improve treatment performance or reduce capital or operating costs. A new technology, known as Nereda®, uses aerobic granular sludge to meet all those criteria.
Angelo Mazzei has always thought locally and acted globally. Born and raised in California’s San Joaquin Valley — one of the world’s most productive farming regions — Angelo worked for his uncle’s 10,000-acre farming operation after graduating from college. There he saw a pressing need for a system that would allow farmers to safely and efficiently inject fertilizer into their irrigation water — a task made even more challenging with the 1968 introduction of high-pressure water supplies through the California Aqueduct, a 400-mile-long water conveyance system. A new approach was vital.
One way to control energy costs at the wastewater treatment plant is to remove as much organic waste as possible at the head of the plant, reducing the load going to aeration. In this Water Talk interview, Marc Roehl, Vice President and General Manager of the Municipal Wastewater Division with Evoqua, discusses the concept of Net Zero Energy and some of the ways a treatment plant can move to produce as much energy as it uses.
Chemicals are among the greatest allies that drinking water and wastewater treatment operations have in the fight against contaminants. But these operations are dependent on the proper technology to administer just the right amount of chemicals at just the right time, ensuring that effluent is neither under- nor overdosed.