Wet Wells Articles

  • ‘Smart’ flood alleviation system protects Portsmouth

    In late 2014, Southern Water completed a major project to reduce the risk of sewer flooding in parts of Portsmouth and Southsea. Substantial works were undertaken to divert runoff and tidal ingress, and a ‘smart’ hydrometeorological monitoring system was installed to enable prompt diversion of excess water during periods of high rainfall. Sewer level monitoring is undertaken in ...

  • How to Assess Fall Hazards

    Fall hazards are an ongoing concern in most workplaces and include both falls from heights as well as falls from the same level. Slips, trip and falls from both categories consistently rank among the top causes of both disabling injuries and deaths in all types of workplaces, from construction sites, to manufacturing operations to warehouses to offices. In fact, the only other category of ...


    By SafetySmart

  • Wastewater Level Measurement Techniques

    Level monitoring and control is a fundamental requirement in any wastewater treatment process. You will find level instrumentation installed at even the simplest treatment plants for pump control, chemical storage tanks and process level controls or alarms. Operators have only limited or emergency control over treatment plant influent, so level controls and instrumentation play an important role ...


    By Greyline Instruments Inc.

  • An artificial intelligence approach for optimizing pumping in sewer systems

    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 ...


    By IWA Publishing

  • The Bactaerator - the natural sump solution case study

    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 ...


    By Cleveland Biotech Ltd.

  • Municipal waste water treatment plant case study

    A municipal WWTP in the North of England was experiencing significant problems with accumulations of FOG in the Wetwell at the head of the treatment plant. The FOG would form a solid cap over the well several feet thick. This put considerable strain on the pumping gear, interrupted the performance of the float switches and required regular manual intervention from the staff. High costs were also ...


    By Cleveland Biotech Ltd.

  • North Creek pumping station, King County, WA

    The new North Creek Pumping Station in King County, Wash., had to maintain the Department of Natural Resources' national reputation for outstanding reliability. To make sure it did, the design team applied the most advanced pump technology and vibration prevention methods. And the designers and utility put extra attention on meeting operations and maintenance needs. "We included folks from ...


  • Suwanee Creek pumping station, Gwinnett County, GA

    That's high head," says Roger Toebben, P.E., about the 350 feet of total dynamic head handled by the Suwanee Creek Pumping Station, which has been up and running since January 2001. "There are a few sewage pumping stations like this, but they're not real common." Very high static head and a long force main (42,500 feet) led to the notably elevated dynamic head, which meant that a ...


  • THE BACTAERATOR™ - for odour and blockage free pumping stations

    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 ...


    By Cleveland Biotech Ltd.

  • THE BACTAERATOR™ - The Natural Sump Solution

    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, ...


    By Cleveland Biotech Ltd.

  • Permanent Multipath Clamp-On Transit Time Flow Meter

    For many years now, ultrasonic flow measurements with "wetted" sensors have been a well established procedure to measure discharge in big pipes in the field of hydro power plants. A lot of research studies show that very precise measuring results can be achieved, under the provision of correct application and consideration of diverse ancillary conditions. Depending on the flow conditions and the ...


    By HydroVision GmbH

  • Computation Fluid Dynamic Modeling of a Proposed Influent Pump Station

    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 ...

  • Vibration – What is It? How does it Affect My Operation? What can I Do About It?

    ABSTRACTThis paper describes how pump vibration can create problems in conveyance systems. Potential sources of vibration are reviewed as well as factors that affect pump vibration. Examples are presented that demonstrate pump vibration problems: (1) when a wet well level was lowered to obtain system storage capacity, (2) in a new installation, and (3) when one pump in an installation functioned ...

  • Trouble Shooting for Trenchless Liner Installation During Sewer Line Rehabilitation

    ABSTRACTLining is being used by the utility industry as a cost effective solution to rehabilitate utility lines. Many types of liners, such as, cured-in-place-pipe (CIPP), fold and form PVC, deformed & reformed HDPE, etc., are being used to restore structural integrity of deteriorated pipes and to reduce inflow/infiltration. Most of the lining installation is carried out without any problem, ...

  • An Update on the Columbus Wet Weather Management Plan

    ABSTRACTUndergoing a system wide program for a metropolitan area of over 1 million people to address SSOs is a challenge. The same can be said for addressing CSOs throughout a system. Columbus is addressing both at once, creating a particularly daunting challenge. Columbus submitted one large report, the Wet Weather Management Plan (WWMP), to the Ohio EPA on July 1, ...

  • Pumping Station Modifications to Comply with ANSI/HI 9.8 Improve Performance While Lessening O&M Requirements --- Two Case Studies

    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 ...

  • Model Testing Optimizes and Verifies Design of a 200-MGD Trench Wet Well for the Sugar Creek WWTP

    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 ...

  • Municipal Wastewater Pump Station Design Problems and Solutions

    The growth of the Northern Virginia Area around Washington D.C. has resulted in the requirement for numerous new wastewater pumping stations and the upgrade and expansion of existing pump stations. This paper presents practical problems and solutions associated with the following pump station design issues: 1.) Concrete Corrosion Protection, 2.) Corrosion Resistant Materials, 3.) Pump Protection ...

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