Until 2012, the Kaufman, TX, Wastewater Treatment Plant (WWTP) operated two separate aeration basins with mechanical surface aerators. As the plant’s equipment aged and required more frequent and expensive repairs and maintenance, the City of Kaufman followed its engineering firm’s recommendation to install a new, more efficient, fine bubble-diffused air system rather than simply replacing its old mixers with in-kind equipment.
Lee Wastewater Treatment Facility (WWTF), located in Massachusetts, received an award for its excellent treatment performance in 2012 from the Environmental Protection Agency (EPA), 4 years after start-up.
This paper presents two types of DAF applications together with biosorption (the “Captivator system”) as primary treatments. In one case, the Captivator system is the sole primary treatment for a new plant installation and helps to gain 65 percent more biogas while requiring only 44 percent of aeration for COD oxidation, compared to a conventional process.
Pronal, a recycled paper plant, produces craft paper. The plant produces an average flow of 14,000 m3/day (3.7 MGD) of wastewater with high contents of Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and Total Suspended Solids (TSS).
Sims Bayou begins near Missouri City, TX, and meanders northeast until it reaches Buffalo Bayou.
The Old Orchard Beach Wastewater Treatment Plant (WWTP) serves the town of Old Orchard Beach, Maine, a coastal resort community where the population swells from 9,000 year-round residents to 75,000 in late June through early August, when seasonal residents and day trippers descend for the peak summer months.
The technology to produce low pressure air, an energy intensive ingredient in the wastewater process, has made significant steps forward in recent years. Unfortunately, the specifications for testing these new sophisticated air producers have not kept pace.
The US Army Corps of Engineers chose RWL Water when they needed expert technology to treat wastewater at the largest Afghan National Army military post in the Nangahar Province of Afghanistan.
Aeration is the heart of most industrial and municipal wastewater treatment and we have a new, cutting-edge solution.
Dissolved Air Flotation (DAF) is a physical/chemical technology designed to treat wastewater containing particles that are slow settling, of neutral density, or buoyant. The DAF works by producing a stream of micro-fine bubbles that attach to solids and lift the solids to the surface where they can be removed by a surface scraping mechanism. This technology is particularly applicable to food and other industries where solids are fluffy, light and slow to settle such as fats, oils and greases. Our systems are designed and customized to handle a wide variety of influent water quality and flow rate. RWL Water provides robust systems that have a small footprint, and are easy to install, operate, service and clean.
System controls are critical to a wastewater blower system. Without them, a system with multiple blowers operating on their individual controls will run more than necessary and result in wasted energy. Maintenance costs increase and worst of all: process performance suffers.
Aqua-Jet® aerators are installed in a wide variety of wastewater treatment schemes including activated sludge systems such as SBRs, MSBRs and extended aeration, as well as aerobic digesters, sludge holding, and equalization basins. It is also UL approved for TTHM stripping in potable water applications.
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.
For more than 60 years, Philadelphia Mixing Solutions Limited has been providing customers with a full range of globally proven in-tank mixing solutions.
Measuring dissolved oxygen (DO) in the aeration process has gone from a helpful, if vague, step for information gathering to a precise imperative for increased efficiency and reduced costs.
Aerzen supplies blowers for industrial and for wastewater treatment. Tom McCurdy, Regional Sales Manager at Aerzen, told Water Online radio in an interview that his company is unique in that they have the ability to help customers pick the right technology for the application without bias because they have multiple technologies available. They will work with the customer within what they need in terms of maximum and minimum flows, pressure swings, on-off cycles, etc., and will help guide a customer towards the right technology.
Ovivo, a worldwide leader in providing advanced water and wastewater treatment solutions, in partnership with the University of Akron, has developed BioAlgaNyx™, a bioengineered algae based technology for wastewater and sludge management.
RWL Water will be back in the Big Easy for WEFTEC 2016. Stop by booth #5628 to discuss how we can help to solve your specific challenges in wastewater, waste-to-energy, and reuse.
Stop by booth #2307 at WEFTEC 2016 to see Kaeser’s energy-saving aeration solutions with blower packages and system controls for wastewater treatment plants.
Rotating Biological Contactors are an efficient fixed-film wastewater technology for secondary and/or advanced biological treatment. To maintain these units and extend their useful life, Evoqua provides OEM parts for Envirex®, Lyco, and Autotrol brands along with process expertise and complete turnkey replacements.
The Reliant Lagoon Master Water-Moving Aeration System (formerly Model WQA) is not just an aerator, but it is a water-mover with the ability to deliver large amounts of dissolved oxygen (DO) using a minimum of energy.
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.
