EPA’s Homeland Security Research Program (HSRP) aims to increase the United States’ capabilities to prepare for and respond to environmental disasters involving chemical, biological, radiological, and nuclear substances (CBRN). As part of this effort, EPA researchers develop scientific data, methods, and tools that can be used by various stakeholders, including laboratories and on-scene coordinators, to increase the effectiveness of response.
Nutrients in the environment from excess nitrogen and phosphorous can result in negative impacts on water quality. EPA is improving nutrient management by incentivizing the development of low-cost technology solutions, such as nutrient sensors, in collaboration with USGS, USDA, NIST, NOAA, and the U.S. Integrated Ocean Observing System (IOOS).
To make informed decisions about how to limit exposure to cyanotoxins, utilities need information to select and implement a comprehensive and technically sound management approach. The Water Research Foundation (WRF) has been actively involved in developing effective innovative solutions to help utilities address this challenge and protect public health.
August and September are peak months for harmful blooms of algae in western Lake Erie. This year’s outbreak covered more than 620 square miles by mid-August. These blooms, which can kill fish and pets and threaten public health, are driven mainly by agricultural pollution and increasingly warm waters due to climate change.
More public and private resources than ever are being directed to protecting and preserving aquatic ecosystems and watersheds. Whether mandated for land development, farming, or in response to the growing severity and number of natural disasters, scientists from Drexel University found evidence that decades of watershed restoration and mitigation projects have taken place, but their impact is mostly perceived.
Denver Water and engineering partners resolve major water quality challenge in crucial South Platte River exchange reservoirs.
University of Miami professors who study water treatment and civil engineering say that water contamination issues point to human error.
Recently, Denver Water’s board approved its proposed “Lead Reduction Program Plan” to fully replace the estimated 75,000 lead service lines (LSLs) in their system within 15 years. The plan is an innovative solution that will remove the primary source of lead within Denver Water’s system, while avoiding the use of orthophosphate that can further exacerbate nutrient pollution problems in rivers, streams, and oceans.
Wildfire is a natural part of many ecosystems, but recently these fires have become more severe, burning more acres and causing destruction in the western parts of the United States. Recently, U.S. EPA researchers have begun to look at the impact of these fires on our water supply, the natural resource we depend on for drinking, irrigation, fishing, and recreation.
Harmful algal blooms are a significant concern for many communities across the U.S. These blooms occur when cyanobacteria grow out of control in fresh and marine waters, often because of excess phosphorus and nitrogen from stormwater runoff and other sources such as fertilizers entering the water.
When a company stakes its reputation on delivering innovative technologies, products, and services, the specter of a changing regulatory landscape is considered more an opportunity than an obstacle. In this Water Talk interview, Mirka Wilderer, CEO of De Nora Water Technologies, discusses varying topics such as pharmaceuticals and nutrients in wastewater, the synergy of the company’s new MIOX and Neptune acquisitions, and how to address the growing concern over chlorate disinfection byproducts (DBPs) in drinking water. For example, De Nora’s new ClorTec Gen III onsite hypochlorite generators generate up to 3,000 lbs./day of chlorine-based disinfectants while reducing chlorate formation and cutting operating costs by 15 percent as compared to previously available models.
The challenges of complying with the Lead and Copper Rule (LCR) and other emerging regulations in a post-Flint world are high-priority for a variety of organizations — from government agencies, to public water systems, to individual facilities such as schools. This Water Talk discussion with Megan Glover of 120 Water Audit addresses the scope and execution of those challenges. It covers everything from providing point-of-use testing kits for sampling individual water spigots to managing overall Safe Drinking Water Act and LCR compliance through cloud-based software. Most important, it gives context to practical solutions for the many utilities and facilities coping with some level of lead exceedance.
With ever-growing demand for water resources, the reuse discussion has been building for years. More utilities are considering it, policy is being created around it, and new technologies are making it more efficient. To better understand the evolving landscape, Water Talk sat down with Brown and Caldwell's regional One Water leader, Allegra da Silva.
The U.S. EPA is gearing up to limit perchlorate in public drinking water systems, so municipalities should start preparing to adopt the appropriate testing and treatment technologies. In a recent report, the agency identified several technologies as the best available to address the perchlorate problem.
When I attended the U.S. EPA-hosted PFAS Summit held at the Horsham, PA high school auditorium on July 25, 2018, the education I received from state and municipal leaders focusing on the local problem was more than just a professional briefing. It was ominously personal, due to the fact that the Water Online editorial office where I work and drink water every day is served by a utility sitting smack-dab in the middle of one of the most concentrated PFAS hotspots in the U.S.
The use of chlorine to treat and disinfect drinking water and wastewater has been in practice for decades, with the earliest recorded attempt dating all the way back to 1893. Since then, it has come a long way.
Surprise objects in food, and the anger and fear they create, can turn into viral news faster than you can say “recall!” Here are five considerations when upgrading from metal detection to X-Ray inspection.
Everyone wants good-tasting water, but most water treatment plants (WTPs) are hostages to the composition of their local source water supplies. One of the components involved in taste is total dissolved solids (TDS), which can affect both the acceptability of finished water taste and its likelihood to corrode or clog pipes and fixtures. Here’s how to quantify the problem and what to do about it if it is excessive.
Fresh water sources around the globe are becoming increasingly stressed due to population growth, industry use, and changing climate patterns. These stresses drive the need to make the most out of every drop of water available. Water treatment systems inherently produce a waste stream that contains contaminants removed during the treatment process. This waste stream can often constitute 20-30% of the total water fed to the treatment system, representing a significant loss of a precious resource both in human and economic terms. Minimizing this waste stream is a key part of the solution to solving the water crisis for both industry and people.
Food manufacturers rely on magnetic separation equipment to reduce foreign object contamination. This article offers guidelines when field testing magnetic strength for the most accurate results.
Sampling and laboratory testing are major responsibilities for water professionals. Test results are used for process control, and ultimately to determine that water is safe for drinking, reuse, or discharge to the environment. Regulatory agencies rely on reported results for proof of permit compliance. So, obtaining representative, properly collected and preserved samples is the first critical step to ensure accurate test results.
Probability of detection (POD) seems like a relatively simple number which vendors use to reassure potential customers of a machine’s capabilities for contaminant detection. However, there is more to the numeric value of POD than just taking it for face value. This white paper explains how POD is calculated and why 100% POD is unachievable and it also looks at factors that affect sensitivity of contamination detection while lastly discussing how the latest innovations in x-ray inspection technology are designed to enhance detection performance, while explaining how food processors can ensure POD is consistent throughout the lifetime of their x-ray system.
Chlorate is a highly oxidized form of chlorine that can be introduced to a water source as an industrial or agricultural contaminant or into a finished water as a disinfection byproduct (DBP). As a DBP, chlorate can result from water disinfection with bulk sodium hypochlorite, chlorine dioxide, or hypochlorite formed through electrochlorination (EC) systems.
It is no secret that a large portion of the drinking water infrastructure in the United States is near or past its intended design life. Our nation’s water infrastructure needs an overhaul, and the cost of doing so is climbing rapidly. The American Society of Civil Engineering’s 2017 Infrastructure Report Card graded the nation’s drinking water infrastructure a D. According to the American Water Works Association, an estimated $1 trillion is necessary to maintain and expand drinking water service to meet demands over the next 25 years.
Wastewater plants treat effluent with chlorine as a final disinfection measure prior to its discharge into the environment. While this should be straightforward, there are still a significant number of small water systems facing big problems because they don’t have a solid grasp on the process. The good news is that a modern, cost-effective solution is available.
To further reinforce positive customer experiences, an ice cream manufacturer challenged themselves to further minimize its already small risk of foreign body contamination by implementing x-ray inspection.
Advances in metal detection technology are enabling more accurate and reliable detection of hard-to-detect metal contaminants in foods. Continue reading to learn more about these advancements.
The advanced oxidation process removes contaminants in water and wastewater by oxidation through reactions with highly reactive hydroxyl radicals (.OH). This chemical process uses ozone (O3), hydrogen peroxide (H2O2), and/or UV light.
In water and wastewater operations, optimizing energy use plays a huge role in cost efficiency, but how can you know if pumping equipment and other motors are running as efficiently as possible? Analytics systems that interpret performance from a variety of data points — pump curves, run time, flow rates, vibration, temperature, energy consumption, etc. — can quantify pump operation to keep performance efficiency on an upward track.
Fundbox is dedicated to helping small businesses grow by giving them access to credit that doesn’t require a personal credit score to get started. It uses cutting-edge technology, data science, and common sense to give small businesses access to previously unattainable financial options.
The Baia Mare Aurul gold mine in North Western Romania suffered a historic catastrophe in January 2000, when its dam burst, streaming out 100,000 cubic meters of waste water, largely contaminated with cyanide, commonly used in the process of mining gold, into tributaries of the Tisza River, a major waterway in Hungary.
Pneumatic conveying is an effective form of moving dry materials in food manufacturing. However, the long lengths of conveying pipe present challenges in terms of addressing cleanliness and sanitation.
Many times sponsors go with a site payment solution they thought would work - only to find out the "automation" is not so automatic - that customer support is outsourced, spreadsheets still need to be emailed back and forth and sites are still calling asking questions. Following is a list of things to consider when choosing to implement investigator payment technology to avoid this situation.