Both rectangular and circular configurations have been commonly used in clarifier basins. The relative merits of the two have been discussed at length for decades. Historically, the selection of rectangular versus circular clarifiers has been based on past experience and the preference of the design engineer or design company.
Facing new limits on acceptable levels of DBPs in the drinking water, as well as age-old complaints about the taste of the water during the summer algal bloom, the North Texas Municipal Water District turned to ozone disinfection as a possible alternative able to address both concerns.
Misinformation about WirelessHART networks prevails among many instrument engineers in the process industries. This article attempts to set the record straight by debunking seven myths about these networks.
In court papers that were filed last month, Wilkesboro, NC, officials claimed that they did not illegally dump untreated wastewater into the Yadkin River and did not fire an employee over the allegations.
It’s raining in California. Is the drought over?
Complaints about a sewage backup in a Florida Keys neighborhood prompted an investigation that ended in tragedy when three men died in a wastewater trench.
Vaporization provides an environmentally friendly option for the delivery of natural Ecosorb®. No water is used in the vaporization process, only undiluted Ecosorb. Through the vapor phase unit, pure Ecosorb® products are pumped through a perforated pipe distribution system, creating a dry vapor to eliminate airborne smells.
The U.S. EPA has updated the list of approved test procedures that can be used to analyze wastewater for compliance under the Clean Water Act.
The effort required to develop water resources engineering models can be significant. But once developed, in many instances the models are only evaluated for a limited, or a single set of conditions. The results and predictions obtained from these evaluations are the ones used in design, presented in reports and conveyed to decision makers and the public.
The Illinois House of Representatives recently passed legislation requiring that lead testing take place in both schools and daycare centers.
A water main break in a Texas city recently flooded an entire neighborhood, displacing families and sending a stream through homes and lawns.
The Obama administration is fighting for a controversial water regulation until the very end of its tenure in power.
In wastewater treatment, aeration systems are more than just critical. They can be seen as the central nerve of the whole operation, the part of the process that usually costs the most to run and can cause the most havoc when it malfunctions.
Long Island, NY, has a growing problem with its drinking water. In August, the U.S. EPA released a survey that showed 1,4-dioxane, a manmade chemical, contaminated the island’s water and exceeded the national average.
Water managers say underground water storage is vital as California and other drought-plagued areas seek to capitalize on rain when it comes.
The Ohio city that made national news over two years ago during its algae crisis is considering ways to strengthen the resiliency of its water system.
cSince our humble beginnings in 2003, we at LuminUltra have always been keenly interested in water quality trends in different parts of the world.
Managing a water treatment facility that houses hundreds of assets can get downright complex and time-consuming, to say the least. Fortunately, modern technology makes it much easier to improve the efficiency of maintenance operations while reducing downtimes.
Agricultural production is one of the most important sectors of the U.S. economy, contributing more than $300 billion to the country each year. When food service and other agriculture-related industries are included, this figure rises to over $750 billion.
Ecosorb® atomizing systems offer odor control against malodors associated with various industrial processes as well as odorous material handling. To eliminate any odor, Ecosorb® atomization systems come in a variety of formats, including explosion-proof systems, high-pressure atomization systems, air atomization systems, fan atomization systems, portable systems and custom designed systems, if needed.
What would happen if there was an emergency in the U.S. that caused radioactive material to contaminate drinking water supplies? What steps could your utilities and government take?
The water crisis in Louisiana is taking a toll on baptisms, laundromats, and other normal aspects of daily life.
Legislation that will require Michigan communities to be informed faster than residents of Flint, MI, were about elevated lead levels in their drinking water was signed by Governor Rick Snyder this month.
Researchers say that upgrading wastewater treatment plants to improve effluent quality may lead to a reduction in the kind of water pollution that causes fish to become intersex — meaning they have both male and female sex organs — which hinders reproduction.
Three years have passed since a West Virginia chemical spill during which thousands of gallons of chemicals used to process coal spilled into the Elk River.
Officials in Corpus Christi, TX, told residents to completely stop using tap water last month after a dangerous chemical made its way into the water system.
Water utilities hoping to decrease the threat of lead contamination are part of a new collaboration that aims to get lead pipes replaced.
A special spray gel formulation of Ecosorb® odor eliminator topically encapsulates material, blocking odors from escaping into the atmosphere. Ecosorb® Spray Gel® is an ideal solution for sludge handling and transportation, open-bed waste trucks, working faces of landfills, soil remediation projects, and other solid/semi-solid odorous materials that continuously emit odors.
Increasingly, sewage is being seen less as waste and more as a potential source of energy.
Last month, residents of San Francisco were accosted by a smell that is all too familiar to certain wastewater treatment plants. The scent of rotten eggs wafted through the air.
Water utility managers have a lot of responsibilities, not the least of which is to keep up with the latest in the industry—contaminants, regulations, technology, and trends. And perfluorinated compounds (PFCs) are on the horizon as contaminants that may affect the public health. Water Online spoke with Calgon Carbon about these important emerging contaminants and how best to remove them.
Jacobi Carbons is a renowned voice in activated carbon (AC) solutions for water treatment, as its name would imply. But its employees also possess a high-level expertise on ion exchange (IX) and how the two processes can be combined for optimal results. Water Online tapped into this knowledge, speaking with Jeffrey Singer from Jacobi to break down the processes’ role in water treatment, the problems they can solve as a team, and who utilizes this synergy best.
Work on lowering levels of selenium in water for Casper, WY, will be put to the test in 2018 when the city’s wastewater treatment plant will have to apply for a new permit from the Wyoming Department of Environmental Quality (DEQ).
Residents of Flint, MI, say they are being shut out of official discussions of the water crisis.
Environmentalists are taking on an electric utility in a federal regulatory proceeding about the fate of mining wastewater.
Deep in the Israeli desert is an academic institute that is building peace in the region by putting nature at its center. The Arava Institute, in partnership with Ben Gurion University, brings students from Israel, Palestine, Jordan, and around the world to find common ground around environmental problems and build trust — and peace — from there.
Last October, Florida Governor Rick Scott enacted a new rule that required that the public be made aware of pollution accidents. Now, however, that rule appears to be no more.
As 80 percent of California continues to languish in drought conditions, state regulators are a step closer to allowing the practice of direct potable reuse (DPR).
Officials in Austin are undertaking a major review of how customers pay for water.
The City of Somersworth has a historical background dating back to the early 1900s when it became the first community to start using chlorine to disinfect it’s drinking water.
Many drinking water utilities have made or are considering the switch from chlorine to chloramine to avoid regulated disinfection byproducts. However, the Water Research Foundation warns that chloramination presents its own set of problems.
A new best practices guide from the U.S. EPA provides discharge permit writers and pretreatment coordinators with tips on helping wastewater treatment plants deal with industrial effluent.
UGSI Solutions, Inc. is pleased to introduce and release the new Polyblend® MAGNUM mix chamber for immediate sale. Specifically, the MAGNUM mix chambers are available for sale as a retrofit to existing M‐Series emulsion polymer activation units (models M240‐M2400) or as a completely new M‐Series unit.
Recognition that overall system water quality is increasingly dependent on proper disinfectant residual management in the distribution network has led UGSI Solutions to develop a family of network water quality management tools that range from tank mixing (Tank Shark®), tank boosting (ChemLocker™) to fully‐automated reservoir residual chemistry management (Monoclor™).
Osum Oil Sands Corp. in Alberta, Canada has awarded Veolia Water Technologies the Orion Phase I Crystallizer system, which reduces costly disposal of evaporator blowdown waste.
Huckleberry Finn wouldn’t recognize today’s lower Mississippi River. Massive walls separate the river from low-lying lands along the bank, an area called the floodplain. Floodplains were once the spillover zone for the river.
Mesofilter Inc., developer and manufacturer of innovative nanotechnology to filter heavy metals in water, recently announced that global public health organization NSF International has certified the first drinking water pitcher to reduce arsenic to NSF/ANSI 53 - Drinking Water Treatment Units – Health Effects, an American National Standard for drinking water treatment units.
Southwest Engineers Inc.,a full-service civil and environmental engineering firm, recently announced Refugio County Water Control and Improvement District (WCID) No. 1 in Tivoli, Texas has joined the customer roster.
The Water Environment & Reuse Foundation (WE&RF) is pleased to announce the election of two new members to the Board of Directors. Joining the Board, which is composed of volunteer members from municipal utilities, industry, government agencies, corporations, and academia, are Chris Hill of ARCADIS and Ken Lykens of HDR Engineering.
Water perceived differently.
KSB, Inc. in the USA offers a wide range of services with a first-class staff that is committed to customer service, comprehensive support and consultancy. In addition, our engineers and technicians draw on many years of experience with all KSB products as well as products of other manufacturers. In order to further improve our services offered to customers at a regional level, KSB, Inc.maintains business relations with trusted and selected distributors. Learn more.
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