As global conditions place more stress on water resources, a great deal of attention is being paid to water reuse technologies, particularly those that facilitate the reuse of the next level of difficult-to-treat or highly variable raw water sources.
Orenco Systems® Inc. (Orenco) recently completed the sale and commissioning of a wastewater treatment system for the Soyo Municipal Hospital in Angola.
Many municipalities are facing the challenge of having to equalize large volumes of storm water sometimes mixed with raw sewage in order to continuously meet their permit limitations. The equalized flow is stored during a storm event and then slowly diverted to the treatment facility when influent flows return to normal levels.
The Seneca Wastewater Treatment Plant (WWTP) receives wastewater from the greater Washington, DC area. Heightened security and concerns over the hazards of using chlorine gas had the Washington Suburban Sanitary Commission (WSSC) reconsidering their wastewater disinfection process equipment.
The Brushy Creek Municipal Utility District (BCMUD) in Brushy Creek, TX contracted Pall in 2014 to perform a process study of a microfiltration system first commissioned in 2006, and expanded in 2009.
Without an appropriate control strategy, even the best wastewater treatment plant (WWTP) equipment can struggle to deliver maximum efficiency. Because energy costs represent up to 60 percent of WWTP plant operating expense, air distribution designs and changing loading (biochemical/biological oxygen demand [BOD]/chemical oxygen demand [COD], ammonia) demands require control strategies designed to adapt to all eventualities efficiently. The following checklists, plus important Do’s and Don’ts, can help in identifying an underperforming control strategy and developing a better one.
A brief introduction into sludge digestion by means of aerators and aerobic mixers that are located on-site is provided. Rationale for treating on-site as well, as is a discussion of sludge characteristics and how they may be addressed are similarly considered. This is an introduction only and will be followed by development of the topic in more detail in later papers. By Dr. J.H. Wakefield, consulting scientist/engineer
In late 2015 Reliant Water Technologies introduced the Wet Well Wizard, an aeration tool for the wet wells in collection systems. During 14 months of field testing the patent pending Wizard System, the primary objectives were to eliminate FOG (fat, oil and grease) caps and to reduce H2S, eliminating it if possible.
In 1993, the Duperon® FlexRake® entered the market as the first multi-rake wastewater screen to operate without a lower sprocket, bearing or track. Designed by Duperon Corporation founder Terry Duperon, the patented equipment reflected his belief that mechanics should operate as simply as possible. The result was a mechanically-cleaned bar screen that consisted of just three main components — screen, raking device and drivehead. Despite its simplicity, the unit quickly proved to be far more reliable than other, more complicated designs. Paired with the industry’s first five-year warranty in wastewater, the Duperon® FlexRake® soon became a benchmark for low maintenance and ease of operation.
Havre WWTP was in search of a replacement solution that would improve their screening process. The old system often became plugged with rags. The City learned quickly to depend on Huber’s RakeMax technology to help it overcome its challenges. The highly effective technology enables the City’s operations to remove such a high percentage of inorganics that the downstream processing are more effective and components are less stressed.
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