Storey County, NV, just southeast of Reno, needed to replace an outdated wastewater treatment plant that serves the historic communities of Virginia City and Gold Hill. The new site was on the side of a hill, presenting challenges for the design of the plant and the orientation of its processes. Also, the new plant area was entirely within a district on the National Register of Historic Places. Read the full case study to learn how the new modular design allows for an efficient wastewater treatment solution.
A modern, master-planned community in the Texas Hill Country needed an affordable wastewater collection and treatment system that could be installed in phases and would perform as reliably as a large municipal system but without the cost, odor, or need for a full-time operator.
The Hagerstown Wastewater Treatment Plant in Maryland incorporated several plant modifications, one of which was the conversion of their disinfection process from the use of ozone to UV.
A leading fruit juice company had expanded over the past ten years and increased wastewater flow from 7,000 to 11,000 gallons per day (gpd), without upgrading its wastewater treatment plant.
The LeSourdsville WWTP in Butler County, Ohio, was required to meet their NPDES permit requirement of 6 mg/l dissolved oxygen at the plants Miami River outfall.
A carrot packing plant was having severe odor problems due to septic conditions in their truck washout water holding lagoon. In addition, nutrient and nitrogen levels were becoming an issue for land application of the wastewater for crop production.
The treated effluent from all wastewater treatment plants across the country must meet local dissolved oxygen (DO) limits before discharging into receiving waters.
A large vegetable processing facility was experiencing problems with its lagoon surface aerators. The company’s treatment process includes a collection and screening assembly, two anaerobic stabilization ponds and a 40 million gallon aerated lagoon.
The high-alpha factor and clean water oxygen transfer performance of KLa’s jet aeration technology results in low energy costs and reduced off-gas volume for industrial and biosolids applications.
Aerzen has the best machine technologies for the job, with blower, hybrid and turbo. AERsmart, the new intelligent machine control, raises their performance even further. AERsmart distributes air flows optimally between the various technologies and their individual efficiency levels. End result: standalone efficiency levels close to the theoretical maximum. Additional savings of up to 15 percent.
Sanitaire’s new Gold Series membrane diffusers have been designed to deliver superior energy efficiency. In fact testing indicates that Gold Series diffusers can lower energy consumption by 20% over conventional fine bubble systems, and will yield even greater savings over other aeration technologies.
Kaeser has been designing and manufacturing superior industrial machinery since 1919. With over 90 years of manufacturing experience, we pride ourselves on upholding our traditions of quality and craftsmanship. Our reputation for reliability, energy efficiency, and excellent service has helped us grow into a global leader in blower and compressed air technology.
EPDM elastomers’ fully saturated backbone lends these diffusers superb resistance to ozone and oxygen, while its non-polar nature provides resistance to ketones and alcohols. These economical membranes also offer excellent chemical, heat, acid and phosphate fluid resistance. With good low temperature flexibility, this series’ technology provides optimum performance and stability over a broad range of operating temperatures. Our Columbus, Drake and Magellan membrane technology is not recommended for applications where petroleum or mineral oils, or di-ester lubricants are present.
Otterbine’s 1/2HP Fractional Series Aerating Fountain and Mixer line includes 4 spray patterns and a horizontal mixer – the only unit like it on the market today!
Evoqua Water Technologies is the leader in Upgrade and Retrofit Solutions for refurbishing wastewater plant equipment and improving operating performance. Experienced technical experts can provide thorough evaluations to determine the most cost-effective options, and draw upon a library of original equipment drawings to speed project execution and lower costs. Evoqua’s installation base dates back more than 100 years.
Discussing the projects that RWL Water has been involved with in 2016, you understand just how variable the world of water treatment really is.
When it comes to wastewater lagoons, there are three main challenges that operators run into. The first, similar to other parts of the nation’s wastewater treatment infrastructure, is age. The second is compliance with new EPA ammonia, nitrogen and phosphorus limits which many lagoon plants weren’t designed to deal with. And the third is expansion as communities grow and need additional capacity.
At WEFTEC 2016, Evoqua Water Technologies explored six core challenges faced by wastewater treatment plants -- energy reduction, nutrient removal, odor and corrosion control, aging plant equipment, water reuse and disinfection. In this Water Online Radio interview, Paul Rice, Municipal Marketing Director with Evoqua Water Technologies, discusses energy reduction and nutrient removal in more detail.
At the wastewater treatment facility, the biggest energy consumer is almost always the multistage aeration blowers. Replacing these blowers with high speed turbo blowers can save energy but the short-term cost to replace the existing blowers, reroute pipe and set new foundations can make the change a hard sell.
Kaeser screw blowers use up to 35 percent less energy than conventional rotary blowers and even achieve significant energy savings compared to currently available screw blowers.
Founded in 2017, under the consolidation of global water industry leaders Emefcy and RWL Water, Fluence was established with a vision to become the key global provider in decentralized water and wastewater solutions.
This video clearly illustrates how successful the wet well wizard is at eliminating FOG (Fats, Oils, and Grease) from collection system lift station wet wells. The patent pending Wizard design is guaranteed never to allow air bubbles to cavitate wet well pumps, to eliminate H2S odor from forming in the well where it is located, and eliminate all negative odors.
Rich Gannon, Diffused Aeration Product Manager with Evoqua, explains the unique diamond punch pattern on the new Diamond S Plus membrane leading to more bubbles per square foot without increasing air flow rates to yield greater oxygen transfer efficiency.
Kevin Westerling interviews Mark Pamperin, a biological processes product manager with Evoqua, about retrofitting and rehab systems for wastewater treatment plants. Their discussion touches on circular clarifiers, anaerobic digestion, brush aerators, chain and scrapers, RBC systems and diffused aeration.
Walter Renz, Director of Business Development for Praxair, highlights the use and benefits of oxygen and carbon dioxide in the water treatment and wastewater industries with specific focus on a low-cost, high-efficiency dissolution process in this video interview with Bill King.
A common first step in the secondary treatment process is to send wastewater to an aeration tank. In an aeration tank, bacterium is used to effectively break down pollutants into less harmful components. Wastewater aeration provides the appropriate oxygen level so that aerobic bacteria can thrive in degrading pollutants such as iron and manganese as part of the wastewater treatment process. Aeration can also be used to destroy anaerobic bacteria that perish in the presence of oxygen. Aerobes that can break down pollutants 10-100 times faster than anaerobes are used most frequently.
Aeration is also used to improve waste lagoons and other waterways such as lakes and reservoirs where oxygen deficiency contributes to taste, odor and pollutant problems. Equipment used for wastewater aeration includes low cascades, jet fountains, spray nozzles, blowers, submerged perforated pipe and porous plates or tubes. Whether the water is thrown into the air via a fountain or diffused by air bubbles being blown or drawn into the wastewater in an aeration tank, aeration works by increasing the area of contact between the oxygen in the air and water.
The most common wastewater aeration process in use today is the air diffusion process, where air is introduced from blowers through diffusion tubes suspended in a spiral flow tank, or in some cases, through diffuser plates in the bottom of the aeration tanks.
