Cleveland Biotech Ltd, market leaders in the field of applied environmental biotechnology, have developed another market leading application system - The Bactaerator™. Sumps, wet wells and pumping stations provide continual problems to all those responsible with managing and maintaining them, from pubs and supermarkets to drainage contractors and water companies. The problem most ...
When a St. Louis area high school determined it needed to replace an underground pump station after nearly 40 years of faithful service, school officials implemented a best value approach to the project with a local design-build firm. They evaluated three options: (1) replace all of the pumps and valves in the existing buried pit, along with associated electrical and control work; (2) abandon ...
Cleveland Biotech Ltd, market leaders in environmental biotechnology, have developed a solution-focused product to banish the common problems of sumps and pumping stations called The Bactaerator®. Many businesses from pubs to supermarkets, drainage contractors to water companies suffer with maintenance and management issues stemming from the problems caused by sumps, wet wells and pumping ...
For most small to medium-sized operations groups like Klein Independent School District in the suburbs of Houston, the conventional choice of submersible wastewater pumps holds little wisdom. Above-ground pump stations reduce exposure to designated confined spaces, and associated safety requirements, allowing these groups to operate in a more convenient and cost-effective manner. “With the ...
The Challenge Tough-to-access submersible pumps complicated life and increased costs for maintenance workers at the Royal Cornwall Hospital in Truro, United Kingdom. “Our original submersible pump sets were no longer maintainable by our in-house staff,” said Leslie Dey, Estates Officer for the hospital, “Keeping up with the training to send anyone down there would have been ...
“We knew our biggest problem was (our) lift stations, we just didn’t know exactly what to do about it.” The words of Jon Brown, former sewer system supervisor for Idaho’s Fremont County Public Works Department no doubt resonates with many of his peers around the country who are managing sewer and water treatment infrastructure. Lift stations (or pump stations) operate as ...
Oversized wet wells in wastewater pumping stations lead to the accumulation of grit, sludge and floatable materials. Trench-type wet wells in compliance with ANSI/HI 9.8, the American National Standard for Pump Intake Design, minimize wet well volume and facilitate wet well cleaning through periodic pump down operations. Two pumping stations, the Cross-Irondequoit Pump Station (CIPS), Monroe ...
The Carlisle Regional Water Pollution Control Facility, a 7 MGD wastewater treatment facility, serves the Borough of Carlisle and portions of North Middleton, South Middleton and Middlesex Townships. Constructed in 1981, the raw wastewater enters the facility through a gravity sewer over 20 feet below grade. The raw wastewater discharges into a pump station wet well, where it is lifted to the ...
Cleveland Biotech Ltd, market leaders in the field of applied environmental biotechnology, have developed another market leading application system – The Bactaerator. Sumps, wet wells and pumping stations provide continual problems to all those responsible with managing and maintaining them, from pubs and supermarkets to drainage contractors and water companies. The problem most commonly ...
Treatment plant hydraulics is often overlooked as one of the most important aspects of treatment plant design, especially in plant upgrade scenarios where retrofitting new equipment or processes into the existing treatment train will create additional hydraulic restrictions. Many existing plants already have a minimal amount of head available for passing peak flows through the system, which can ...
Wastewater treatment plants are essential structures in cities and small communities. Such facilities are closely monitored by several professional institutions, such as OSHA and the NFPA. When it comes to the latter group, guidelines set forth in NFPA 820 are regulations that dictate fire hazards in such facilities. Fire related accidents in wastewater treatment facilities are uncommon. However, ...
Treatment plant hydraulics is often overlooked as one of the most important aspects of treatment plant design, especially in plant upgrade scenarios where retrofitting new equipment or processes into the existing treatment train will create additional hydraulic restrictions. Many existing plants already have a minimal amount of head available for passing peak flows through the system, which can ...
The GridBee® AP500 wet well mixer for lift stations officially launched in April 2015. From its very first installation it became clear this little mixer had some huge benefits in the world of lift station wet wells. Even then we didn’t have a true picture until bits and pieces of success story after success story started to make it our way. We thought we’d share a couple of them ...
Description This project, completed in 2002, included 17 manholes located within the Yellowstone National Park. The manholes had significant deterioration from wastewater chemical corrosion. The structure pictured below was a rectangular vault. Solution Custom fabricated liner was manufactured by Poly-Triplex Industries, LLC to fit the size and shape of the box structure. Liner was saturated ...
Description This project, completed in 2002, included 17 manholes located within the Yellowstone National Park. The manholes had significant deterioration from wastewater chemical corrosion. The structure pictured below was a rectangular vault. Solution Custom fabricated liner was manufactured by Poly-Triplex Industries, LLC to fit the size and shape of the box structure. Liner was saturated ...
Connecticut town employs managed SCADA to maintain accuracy The town of Darien is home to 21,000 people on the Gold Coast of Connecticut. Residents pride themselves on being good environmental stewards who work to preserve their pristine waterways and natural habitat. Prior to 2012, the Darien collection system was monitored by programmable logic controllers (PLC) and phone lines. Darien ...
This paper presents details of a fuzzy logic system developed for the control of sewer pumping stations for energy costs savings. This is part of an ongoing collaborative project between Anglian Water and the University of Sheffield. The model rules and operation are developed for one representative pumping station in order to enable the identification of potential benefits and inhibitors to ...
Charlotte-Mecklenburg Utilities (CMUD) and CDM are currently involved in the design of several treatment plant upgrades at the Sugar Creek wastewater treatment plant (WWTP) in Charlotte, North Carolina. Implementation of this project, which includes a 200-million-gallonper- day (mgd) screenings and influent pump station with dual self-cleaning trench-type wet wells, will provide CMUD with the ...
Traditionally pump intake hydraulics have been investigated using scale physical hydraulic models. Computational fluid dynamics (CFD) is a rapidly improving technology that in some cases can be used as a cost or time effective alternative to traditional physical model methods for evaluation of pump intake hydraulics. This paper presents a case study on the use of CFD modeling to re-evaluate and ...
Abstract This paper provides an overview of organic and inorganic protective linings for collection systems and wastewater treatment plants from a field application perspective. The dynamic nature of corrosion, pre-job inspections, specification development, application “challenges” and inspection techniques are reviewed utilizing several case histories. Introduction Municipalities ...