It has been said that the unseen and untreated can break down any system — this phrase could not be more accurate than in the world of wastewater treatment when considering the infiltration of grit into a system. Infiltration happens in the collection system, whether it’s from living on the coast, aging infrastructure or just plain old build up over time.
For many applications, water should be free — or nearly free — of organic compounds. In drinking water, the impact is optimal taste, appearance, and safety. While the problem of organics finding their way into source water continues to grow, newer monitoring technology is making it easier for water treatment plants to rapidly detect the substances and apply the appropriate fix.
Source water monitoring is commonly viewed as a sophisticated and expensive task requiring extensive labor and high-tech equipment. Budget-minded municipal water authorities therefore tend to see it as unnecessary unless there’s a significant, imminent threat to source water quality. However, there are low-cost — in many cases, no-cost — methods to monitor source water to determine if looming issues warrant extra attention.
Business people love to talk about "disruption." They pride themselves on eating their competitors' lunch. Where their markets used to be about raving fans, now it's about inspiring craving fans, fueled by "hunger marketing" and the fear of missing out. There's a lot of dog-eat-dog philosophy...which is why it's important for companies to be willing to cannibalize their own technologies.
Traditional processes used to remove iron and manganese from groundwater have commonly included oxidation with chlorine followed by a filter with sand or other media.
The U.S. EPA has released details about a “Water Reuse Action Plan” meant to encourage water recycling through facilitated discussions between federal and state stakeholders and the treatment sector.
The City of Silverton is known as Oregon’s Garden City and sends one million gallons a day of treated effluent to the Oregon Gardens, returning the remainder to Silver Creek.
There are many facets to industrial processes — raw materials, skilled labor, well-designed equipment, and sound methodologies. Optimizing those manufacturing processes requires consistent, reliable feedback on performance efficiency and output quality. Here are several guidelines for implementing continuous monitoring to keep process integrity at optimum levels.
Increased treatment processes apparently haven’t been enough to curb levels of a potentially dangerous contaminant in a North Carolina water supply.
Potable reuse offers a massive opportunity to recover water from the wastewater process, but projects face a variety of barriers to getting off the ground. Most successful early adopters engaged early with their constituents and implemented smaller-scale demonstration projects that were accessible to the public to prove the technology and process.
Large-scale water-reuse treatment plants have had sustainable impact in populated areas where the volume of water to be treated and reused in a concentrated area makes them practical. Today, the flat-sheet membrane aerated biofilm reactor (MABR) technology that is delivering high-quality wastewater treatment to remote locations is poised to realize the promise of sustainable water reuse in those same locations.
In a nod to just how important water quality has become for Lake Erie — a source body that has been plagued by toxic algal blooms for years — locals have decided to grant it the type of legal rights usually reserved for human beings.
An aquifer recharge plan in Virginia will now move forward under stricter legislative and scientific oversight.
Secondary metabolites of algae — including algal toxins and taste and odor compounds triggered by a harmful algal bloom — can find their way into source water, creating the risk that they will ultimately reach the water treatment plant to cause water-quality problems. Here is a checklist of considerations for mitigating those effects through cost-effective oxidation, or combined oxidization processes, across a variety of source water conditions.
One of the most commonly used measurements in the water and wastewater industry is pH. A measurement of how acid or alkaline a substance is, a pH reading can instantaneously indicate a problem with the water. Another common and useful measurement is oxidation-reduction potential (ORP). Treatment facilities use ORP sensors to optimize disinfection and biological nutrient removal processes.
For those who appreciate the old maxim about catching more flies with honey, the logic of creating a more favorable biological environment for better biological nutrient removal (BNR) makes perfect sense. Worldwide implementations of flat-sheet membrane aerated biofilm reactor (MABR) technology are doing exactly that — in less space, with less energy, and with lower operating expenditure (OPEX) for aeration and chemical treatment. Here’s how:
The Warsaw Water Filters in Poland, also known as Lindley’s Filters, were built in 1883 - 1886 by William Lindley, an English engineer who together with his sons designed water and sewerage systems for over 30 cities across Europe.
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.
With just over half a year to go until the divorce date, and roughly two months until European Chief Brexit Negotiator Michel Barnier’s self-imposed October deadline for a Brexit deal, it has started to feel like we are finally seeing some concrete progress when it comes to Brexit.
One of the nation’s largest four-service utility providers, Colorado Springs Utilities supplies energy and water to over 450,000 people. The state-certified laboratory of the Water Quality Assurance section processes over 14,000 samples and 80,000 analytes per year from eight watersheds, seven finished water treatment facilities, 38 finished water reservoirs, four post-chlorination stations, two wastewater treatment facilities, and over 2700 miles of pipeline.
In 2007, White House Utility District (WHUD), a water utility serving approximately 90,000 consumers and businesses in Tennessee, faced a dilemma: how to meet a projected growing demand for water within the budget and capital constraints faced by municipal and mid-sized utilities everywhere.
Located in Northern Missouri, the city of Trenton and its more than 6,000 residents pride themselves on self‐sufficiency and pragmatic decision making. During the spring of 2012, the utility embarked on the design and construction of chemical feed system upgrades at the existing water plant that would help the city manage the need for new capacity, better control of trihalomethanes (THM’s) and improve operator safety by removing gaseous chlorine as a disinfectant.
Overview of a recent study conducted to try to determine why there is so much variation and why there are so many inefficiencies and delays in study startup.
One of the great turnaround stories in the history of our nation’s water bodies is that of the Chesapeake Bay. Since 1976 when the Environmental Protection Agency (U.S. EPA) first undertook a comprehensive study of the Bay, efforts to address excessive nitrogen and phosphorous degradation of water quality have steadily improved the Bay’s complex ecosystem.
Many invasive species are found along U.S. coasts, including fishes, crabs, mollusks, and marsh grasses. Since the general opinion is that invasives are harmful, land managers and communities spend a lot of time and resources attempting to remove them. Often this happens before much is known about their actual effects, either good or bad.
Climate change is unfolding right before our very eyes. And for Denver Water it is serious business. Experts in Colorado point to rising temperatures, earlier spring runoff and extreme fire behavior as powerful evidence for climate shifts resulting from the buildup of greenhouse gases tied to power generation, tailpipe emissions and a wide array of additional human activities over decades.
For those who are curious about the natural world or have concerns about environmental issues such as air pollution or water quality, there are more and more opportunities to collect and report data to the public or government agencies. Using new technologies, it is easier than ever to collect, analyze, and report environmental data.
This is the second of two articles looking at the increasing reliance of Australian cities on desalination plants to supply drinking water, with less emphasis on the alternatives of water recycling and demand management. So what is the best way forward to achieve urban water security?
Most people think as little as possible about the wastewater that is produced daily from their showers, bathtubs, sinks, dishwashers and toilets. But with the right techniques, it can become a valuable resource.
Precise water quality is critical for municipal water treatment operations, but many industrial applications have even more rigorous requirements, regulations, and guidelines to follow. The energy, pharmaceutical, food processing, and other industrial fields require exact water quality in order to function efficiently.
This guide will help lab managers understand risks and best practices as they develop training for CO2 incubator users and establish a preventive maintenance program and setup criteria.
Did you know that the Environmental Protection Agency (EPA) had a published Contingency Plan in anticipation of the current government shutdown? I guess in hindsight, you would have expected it for an agency with 134 facilities dotted across the country. And in fact, it’s required by the Office of Management and Budget (OMB) under Circular A-11, Section 124 that all government agencies have plans for an orderly shutdown “in the event of an absence of appropriations.”
Cookie and biscuit manufacturers face many challenges to provide the highest quality products and it is vital that they implement effective food safety programs to overcome these issues, safeguard their brand reputation and prevent customer complaints.
A lot has changed over the past 15 years. Back in the early 2000s, many utilities weren’t interested in understanding what was in their water beyond the contaminant and disinfection byproduct levels they were regulated to comply with. But as Pat Whalen, President and CEO of LuminUltra, explains in this ACE 2018 Water Talk interview, a steady stream of ongoing education and the modern data storage and analytics that cloud computing provides, has developed some rabid fans eager to explore the microbiology of their water systems.
What is channel enablement exactly? Channel enablement has emerged as a leading concern for organizations that rely heavily on partners to sell and market their products and services.
Total nitrogen (TN) has become a compound of concern because of its impact on eutrophication on water sources. And as more states begin to set limits for TN, accurate testing becomes paramount. Unfortunately, multiple labs and variable test procedures can lead to disparities in final results. Many of today’s test methods are also time consuming, expensive, and even unsafe for lab technicians to use.
Filtration has been around for a long, long time, so it may be that most treatment plant operators feel pretty informed about its capabilities. But hearing from Brian Frewerd, Director of Application Engineering with Parkson Corporation and Water Talk guest, will likely prove enlightening. Frewerd provides background on sand filtration for tertiary treatment applications, followed by insight on notable technology improvements and performance milestones
Municipal wastewater operations require significant energy to operate, but the biogas produced solely through anerobic digestion of sludge isn’t typically enough to offset the electricity and heat load demand at plants. Advanced anaerobic digestion technology, however, can change the equation so wastewater treatment plants can get closer to energy neutrality and in some cases even generate an excess.
Ozone disinfection has long been a critical process in the wastewater treatment industry. And, because ozone is relied on so heavily to oxidize a wide variety of potential wastewater contaminants, water quality analysis during the disinfection process is paramount. Once the ozone process itself is understood, its water quality ramifications and the quality parameters that offer insight into its efficacy can be analyzed and taken into account.