WASTEWATER CONTAMINANT REMOVAL WHITE PAPERS & CASE STUDIES
Self-Sufficient WRRF Completes In-House Grit Removal Upgrade
Aging, inefficient aerated grit facilities at North Davis Sewer District’s (NDSD) treatment plant headworks not surprisingly caused the typical headaches of poorly performing headworks: downstream process tanks filled with grit and process equipment wore much faster than it should. And not surprisingly, it became a costly hassle for plant staff with annual basin cleanouts.
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![WastewaterTreatmentPlant20]( "Kansas Wastewater Treatment Plant Makes A Long-Overdue UV System Upgrade (Case Study)")
Kansas Wastewater Treatment Plant Makes A Long-Overdue UV System Upgrade (Case Study)The UV disinfection system at the Plant 20 Wastewater Treatment Plant was installed in 2002, but over the years staff continued to struggle with PLC and controls-related issues, ballast failures, and water level management. An overhead crane was needed to operate the water level management device, and water level fluctuations of 12” were common, which contributed to an increase in fouling on the quartz sleeves.
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![Advanced On-Site Wastewater Treatment]( "Advanced On-Site Wastewater Treatment For Greenfield And Retrofit Applications")
Advanced On-Site Wastewater Treatment For Greenfield And Retrofit ApplicationsMany owners and operators of traditional decentralized municipal wastewater treatment plants, also referred to as on-site or off-grid treatment, are acutely aware their systems are at risk of becoming obsolete.
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![PAX-Mixer-PP-1071-Southgate-450_300]( "Dual Mixers Overcome Stratification And Prevent Ice Formation In Concrete Tank With Baffles")
Dual Mixers Overcome Stratification And Prevent Ice Formation In Concrete Tank With BafflesThe climate in Southgate, Ontario, is considered cold and temperate with significant rainfall throughout the year. Temperatures in winter average around -10°C and can drop as low as -30°C to -40°C for brief periods of time, which can wreak havoc on the local water storage tanks and distribution piping. Read more to learn how the installation of PAX Mixers has kept the tanks free from ice and has shown an improvement in disinfectant residual levels.
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![Raw water]( "Replacement Vacuum Liquid Feeder For Poly Aluminum Chloride Ends Feed Reliability Problem For SWTP")
Replacement Vacuum Liquid Feeder For Poly Aluminum Chloride Ends Feed Reliability Problem For SWTPThe Chief Operator for a surface water treatment plant (SWTP) reports that replacement of a troublesome vacuum liquid feeder for poly aluminum chloride (PACl), with a more advanced vacuum liquid feeder, ended the threat of a process upset for operations staff that was caused by the previous unit not being able to hold a constant feed rate. The ability to provide a consistent feed is needed as a key element in the plant pre-treatment process, which features turbidity reduction and clarification.
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![AquaStorm]( "City Saves Big Money By Using Cloth Media Filters To Treat CSO Discharge")
City Saves Big Money By Using Cloth Media Filters To Treat CSO DischargeThe City of Rushville, Indiana had to remedy a consent order filed in 2007 for its untreated combined sewer overflow (CSO) discharges that were polluting the Flatrock River, a violation of the Clean Water Act. The city originally planned to install a 1 MGD stormwater storage tank, but was approached by Aqua-Aerobic representatives with a pilot test proposal utilizing a new technology.
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![New InLine 16000+ UV Reactor]( "One Million Gallons Of Wastewater Reused Daily To Irrigate Award-Winning Botanical Garden")
One Million Gallons Of Wastewater Reused Daily To Irrigate Award-Winning Botanical GardenThe 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.
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![textiles]( "Textile Wastewater Treatment — An Application To Sustainably Reuse Water In The Textile Industry")
Textile Wastewater Treatment — An Application To Sustainably Reuse Water In The Textile IndustryThe textile industry is a water consumption intensive industry. Water is utilized for cleaning the raw material, and for the different steps in the textile dyeing process. Due to the effects of water scarcity and stricter environmental regulations, the cost of fresh water utilization has increased worldwide.
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![PSI-TRS-PP-043-Aquarion-CT-450_300]( "Connecticut Water Utility Successfully Removes 45% Of Trihalomethanes (THMs) With Quick-Turnaround Clearwell Intervention")
Connecticut Water Utility Successfully Removes 45% Of Trihalomethanes (THMs) With Quick-Turnaround Clearwell InterventionIn the past several years, Aquarion Water Company had been monitoring their system’s THM formation and attempting to lower them through treatment and distribution system changes. Aquarion engineers decided that reducing THM formation in the Laurel High Service Clearwell at the Stamford Water Treatment Plant (WTP) would eliminate concerns of elevated THM formation in the distribution system served by the WTP.
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![Standardizing On-Site Hypochlorite Generation Disinfection Technology in Water and Wastewater Treatment Plants Increases Safety and Eases Operations]( "Standardizing On-Site Hypochlorite Generation Disinfection Technology In Water And Wastewater Treatment Plants Increases Safety And Eases Operations")
Standardizing On-Site Hypochlorite Generation Disinfection Technology In Water And Wastewater Treatment Plants Increases Safety And Eases OperationsIn late 2005, the City of Newberg, Oregon, decided to upgrade their water treatment plant disinfection process from gas chlorine to on-site hypochlorite generation (OSHG) in an effort to simplify operations and increase operator safety. The plant produced an average of 2.5 million gallons per day (MGD), with a peak capacity of 5 MGD.
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![World’s Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient Pollution]( "World’s Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient Pollution")
World’s Largest Denitrification Plant Helps Tampa Bay Reduce Nutrient PollutionNutrient pollution is getting worse in many estuaries throughout the United States, especially those on the heavily populated East Coast.
On-Site Sodium Hypochlorite Generation Replaces Hazardous Cyanide In Precious Metal Extraction
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.
WASTEWATER CONTAMINANT REMOVAL PRODUCTS
Are you looking for a water treatment or wastewater treatment solution? Select below to begin this quick, 5-step process to design the right Fluence solution for your needs.
The AquaStorm™ cloth media filtration system is designed as an economical and efficient solution for the treatment of wet weather applications. This system utilizes a disk configuration and the exclusive OptiFiber PF-14® pile cloth filtration media to effectively filter high solids waste streams with and without the use of chemicals as determined necessary for application-specific water quality. This system is ideal for wet weather applications due to its proven removal efficiencies and high quality effluent, even under varying influent conditions.
SUBRE, a highly effective upgrade solution for wastewater treatment plants, intensifies the biological nutrient removal process and increases plant's capacity with no added footprint and reduced energy requirements. SUBRE utilizes Fluence’s Membrane Aerated Biofilm Reactor (MABR) technology to achieve a stable and high quality effluent.
Today’s high dosage ozone systems, such as those required by water reuse projects, place extraordinary energy and mixing demands on ozone mass transfer. Mazzei utilized multiphase computational fluid dynamics (CFD) analyses to develop the new PFR+ to address these challenges.
Environmental protection, consistent product quality, process optimization and safety – just a few reasons why liquid analysis is becoming increasingly essential. Liquids such as water, beverages, dairy products, chemicals and pharmaceuticals have to be analyzed day in and day out. We support you in fulfilling all these measuring tasks with application know-how and cutting-edge technologies. Discover our comprehensive portfolio and choose the product best suited to your process needs.
De Nora offers reliable, robust and proven ozone solutions to ensure peace of mind, backed by extensive global experience.
Evoqua's OMNIFLO® SBR MAX system with Jet Tech technology combines the benefits of a true-batch SBR with the benefits of a continuous fill batch reactor process to treat wastewater influent flows to over 5 times design. The OMNIFLO SBR MAX system optimizes hydraulic handling during storm flows, reduces equipment sizing and cost, and can trim energy costs over 15%!
Aspiral™ is a smart, packaged wastewater treatment solution based on the Membrane Aerated Biofilm Reactor (MABR) technology.
WASTEWATER CONTAMINANT REMOVAL PODCASTS
For water utilities facing various water contamination issues, there is no single catch-all treatment. That is why in this recent Water Talk interview Ronit Erlitzki and Doug Craver of AdEdge Water Technologies share treatment options that can be used alone or in combination to address diverse challenges. They introduce a new reverse osmosis (RO) treatment technique capable of raising recovery rates by 20 percent and reducing concentrate volume up to 70 percent vs. conventional RO (depending on water quality). They also explore biological processes for removing nitrate, VOC, ammonia, etc. and treating high brine concentrations in wastewater, plus techniques for resolving ammonia problems in water with high TOC concentrations.
Not all water is the same, so don't be sold on a "one-size-fits-all" solution. Many treatment providers will attempt to fit a square peg in a round hole, while others — a select few, in fact — can provide a fit-for-purpose solution based on broad, customized capabilities. That's the pitch from U.S. Water Services, which recently became part of Japan-based Kurita Water Industries, a resource- and technology-rich company with global reach.
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.
Engineered skid systems provide a compact configuration chemical feed at water and wastewater treatment plants. While these all-in-one metering pump solutions bring tremendous value to their users, traditional platforms have their pitfalls.
Capacitive deionization (CDI), sometimes called electrochemical demineralization, is referred to as Radial Deionization (RDI) by Atlantis Technologies, which has developed a proprietary form of the process. If you haven't heard of it by any name, or would like to know more about its considerable treatment capabilities, tune into this interview with Patrick Curran,
As water reuse becomes increasingly common, more utilities will get to know ozone. To explain its role in water treatment schemes, Water Talk welcomed Jim Lauria, Vice President of Sales and Marketing at Mazzei Injector Company, and Ben Kuhnel, Senior Project Manager for Arcadis. Learn how ozone works in concert with other processes to safely recycle water and treat contaminants of emerging concern — even in mobile/on-site applications.
WASTEWATER CONTAMINANT REMOVAL VIDEOS
There is a lot to be excited about at De Nora lately. The recent acquisitions of two new companies is just part of the story, told in this video by Mirka Wilderer, CEO of De Nora Water Technologies. Wilderer is key to the wave of developments, as she only recently took the CEO mantle. Along with an introduction, this video from WEFTEC 2019 offers insight into trends and challenges facing the water/wastewater industry, including the most problematic contaminants and the ongoing struggle to update infrastructure. Potential solutions, as well as the roadblocks and drivers that can impact industry progress, are also identified.
Trojan Technologies has been providing treatment solutions for the water/wastewater market for four decades, but 2018 stands out as the year Stephen Bell joined as its new president. Water Online had opportunity to catch up with Bell at WEFTEC, where he talked about the company's culture, philosophy, and drive to innovate. One particular innovation is the TrojanUVFlex, a drinking water disinfection and advanced oxidation system for both potable and non-potable reuse applications, as well as the destruction of chemicals such as 1,4-dioxane. Tune in for an introduction to Bell and a summary of Trojan's unique technology.
Water. It’s vital to human life, our economy, and ecosystem - the very survival of our planet. But water challenges are growing more intense than ever before. Increasing volatile weather patterns fueled by climate change, crumbling infrastructure, pollution, and over population that is causing a surge in the demand for water. This means the world’s supply of clean water is rapidly declining putting our future at risk.
CFD modeling was used to design, position and validate performance of the new, patented flow conditioning vanes and post-injection blending grid. The same, proven mass transfer mixing nozzles used in the original pipeline flash reactor (PFR), are also part of the PFR+.