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 shopping center in Ventura, CA with several major retail stores, was suffering from a sewer odor problem.
The treated effluent from all wastewater treatment plants across the country must meet local dissolved oxygen (DO) limits before discharging into receiving waters.
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 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.
A design/build contractor needed a quiet, efficient aeration system for a 250,000 GPD field erected WWTP that was to be located adjacent to a school.
The challenge for Sulzer was to prove that the new products are even better than the reliable and proven components previously used in two aeration basins of the new Pulawy wastewater treatment plant in Poland.
A fish flour and fish oil processing company produces 100 tons of flour a day from fish waste resulting from the broth concentration plant and from drying of flour, washing water, boiler blowdown and cooling towers. The company needed to treat its wastewater and to reduce its water supply costs.
The disc diffuser ROEFLEX® stands out for its simple and robust design. It consists of a unique, convex shaped support disc. The disc is covered by a flexible, slotted membrane of elastomer, a ring secures the membrane in place. Due to the disc’s unique convex shape the membrane is slightly lifted off the disc when air is supplied, therefore allowing an even distribution of the generated fine bubbles. The membrane can be delivered in different rubber (EPDM) qualities and slot patterns (HL, SL) according to the application.
Sanitaire fine bubble ceramic disc aeration systems incorporate superior and advanced engineering features in the ceramic element, the diffuser sealing method and the piping system joints and supports. The premier line of SANITAIRE fine bubble ceramic disc diffusers is considered the most efficient technology available for oxygen transfer in wastewater treatment applications.
Consider us your expert lab partners. We work with you and your unique application to optimize rubber compounds. The result: a customized, chemically-correct solution.
The VertiCel® system is superior to other aeration technologies because it saves energy and space, while producing an unparalleled effluent quality. It is ideally suited for wastewater treatment plants with process flows above two million gallons per day. The VertiCel® tanks in series design consists of an aerated-anoxic tank followed by an aerobic tank.
The Aqua-Jet® SS-PW surface mechanical aerator, manufactured by Aqua-Aerobic Systems is certified to NSF/ANSI 61 by UL for use in potable water applications. These units can be utilized for THM stripping applications or circulation in potable water treatment systems and reservoirs with a minimum volume of 100,000 gallons.
For those applications where mixing requirements are the controlling factor, the AquaDDM® can reduce power costs, while delivering 3-4 times the mixing of any aerator of the same size.
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.
With a variety of blower combinations available to optimize aeration performance at wastewater treatment plants, efficiencies are now being found by focusing in on aeration control systems. Eric Bennett, Controls Product Manager with Aerzen, recently discussed the advantages operators are finding by deploying the company's AERProcess solution in managing energy use, optimizing biological processes and reducing wear and tear on blowers and valves.
Find out the importance of total cost of ownership in wastewater treatment applications and how Atlas Copco supports this approach.
Fluence’s Membrane Aerated Biofilm Reactor (MABR) technology is an innovative wastewater treatment solution which saves up to 90 percent energy consumption. It is the ideal solution for decentralized applications such as rural villages, housing developments, municipalities, hotels, resorts, and golf courses.
Surrounded by agricultural fields where water is a vital resource, the rural region of Hayogev, Israel chose Fluence’s energy-efficient Membrane Aerated Biofilm Reactor (MABR) solution for wastewater treatment suitable for reuse.
Mazzei’s GDT process delivers rapid and efficient ozone mass transfer under pressurized contacting conditions resulting in greater gas solubility. Additional mixing and rapid gas bubble removal is provided by the system’s degas separator. With high operational flexibility and low capital, installation and operating costs ― and all within a compact footprint ― the GDT mixing and contacting system is the best solution.
Mazzei’s wastewater basin aeration system thoroughly agitates bulk water and mixes ambient air or pure O2 into the wastewater. Utilizing in-house CFD modeling, Mazzei systems are designed to ensure efficient mixing and aeration. Unlike blowers, Mazzei aeration is virtually silent, and requires little to no maintenance.
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.
