returned activated sludge News

  • Using ozone to reduce sludge

    Untitled Document An excess of sludge in a sewage treatment plant is not a new problem. For a long time, “end of pipe” ...


  • Sludge Finder 2 - Energy-saving and reliable at Wessex Water

    Pulsar Process Measurement have supplied seven of their latest sludge blanket monitors, Sludge Finder 2 to Wessex Water for use at Christchurch STW. The acoustic technology replaced outmoded dipping probes which were unreliable and led to poor control of the system. At Christchurch, the final settlement tanks are set up to run at an ideal sludge blanket of 15-20% of tank depth, controlled by the ...

  • Pulsar Sludge Finder 2`s, Wirelessly Helping with Final Treatment Compliance

    Pulsar have supplied 14 Sludge Finder 2 sludge blanket detectors to Severn Trent for their Barnhurst STW near Wolverhampton, automating the critical final treatment process to aid Compliance and reduce out of hours call-outs. On this large, well-established site, it would have been impossible to cable the units back to the control ...

  • Suspended Solids Density Meter: Maintain Your Concentration!

    Markland's Meter offers real-time knowledge of sludge/silt concentrations in pipes, tanks & clarifiers, and automates sludge removal. Its non-intrusive, ultrasonic sensor provides continuous %SS readings of primary, secondary, return-activated and backwash sludge, allowing users to program underflow pumps to shut off before sludge density becomes too thin, and helping operators optimize ...

  • Product Highlight – The CMD Device

    The CMD device allows non-destructive access to the concentric return activated sludge line found in suction riser pipe clarifiers.  This saves time and costs when retrofitting this type of clarifier. The CMD adapter is a stationary circular ring serving as the lower segment of the center influent/support column. It forms a support base for the upper section of the column. It is ...

  • Wineries Saving Big in Wastewater Treatment

    Successfully Treating Winery Wastewater Save $135k Treating Winery Wastewater Many smaller wineries have outgrown their septic tanks, and larger wineries have outgrown their treatment ponds, a BioReactor gives increased capacity at a fraction of the cost of ...


    By Integrated Engineers Inc.

  • Dynatec receives PO for Anaheim recycling project

    Dynatec received a purchase order to supply a DynaLift MBR system to provide reuse water for the city of Anaheim, CA. This is a water mining project, where waste from a sewer line will be treated to a high level of purity for reuse for flushing, irrigation and other local requirements. Waste activated sludge and screenings will be returned to the sewer line. The facility is to be placed ...


    By Dynatec Systems Inc.

  • Dosing upgrades enhance process performance at Hogsmill Sewage Treatment Works

    Three separate upgrades to the chemical dosing plant at Thames Water’s Hogsmill Sewage Treatment Works in Surbiton near Kingston-upon-Thames have improved efficiency and performance at the site and are also designed to meet the latest phosphate discharge consents into the River Thames. Working with partners, the upgrades were designed, built and installed by chemical dosing specialist, Gee & ...

  • Biowater Technology Offers Wastewater Treatment Package Plants

    Biowater Technology introduces a self contained Fixed Film system Providence, RI USA: Biowater Technology is now offering a prefabricated, containerized wastewater treatment system.  Our Biowater package plant is different than others in that it can be installed above or below ground and in either a skid mounted configuration or a trailer configuration depending on the ...


    By Biowater Technology

  • FlowTexTM disc filter by Entex Works to improve the nation`s water infrastructure

    The American Society of Civil Engineers 2009 report card gave the nation's water infrastructure a grade of D-. The FlowTex Filter can help raise the grade. FlowTex is a user-friendly, high performance tertiary filter, suitable for both small and large flow applications, that removes suspended solids as small as 10 microns. That's important for water and wastewater plants that have stringent ...


    By Entex Technologies Inc.

  • Removing hormones from wastewater

    Treated wastewater that is returned to waterways can contain trace organic pollutants that have a negative impact on the environment. In particular, chemicals known as endocrine disrupters, which mimic the effects of natural hormones or otherwise disrupt normal endocrine behaviour, have been found in treated wastewater. According to a recent study, treatment processes could be significantly, and ...

  • Corrosion-resistant screw pump retrofit

    The city of Woodland, California, USA, has retrofit the headworks and return activated sludge (RAS) systems at its Water Pollution Control Facility with five stainless steel Siemens Internalift pumps. The pumps replaced their more than 25-year-old carbon steel predecessors. The new pumps' stainless steel design is expected to be more corrosion-resistant, thus increasing expected equipment ...

  • EPA Settlement with Baltimore Companies Helps Provide Safe Handling of Hazardous Waste

    American Plating Service, Inc. and Monument Street Properties LLC have agreed to pay a $5,000 penalty to settle alleged violations of hazardous waste storage regulations at a commercial metal plating and finishing facility in Baltimore, the U.S. Environmental Protection Agency announced today. In a separate agreement with EPA, the companies further agreed to conduct a facility investigation ...

  • EPA orders removal of PCB-contaminated materials from Massena, N.Y. site and decontamination of buildings before demolition

    The U.S. Environmental Protection Agency (EPA) today ordered Motors Liquidation Company (MLC), formerly the General Motors Corporation (GM), to remove materials and soil contaminated with polychlorinated biphenyls (PCBs) from portions of the General Motors Central Foundry Division Superfund site in Massena, N.Y. MLC intends to demolish several buildings at the site, a former General Motors plant, ...

  • Process optimisation by Real-Time Control at Taunton STW

    Wessex Water is investing around £20m at Taunton (Ham) sewage treatment works to improve the facilities for wastewater and sludge treatment in a project that is due for completion by the end of March 2015. The upgrade to the works under the DWF Improvements Scheme will increase the site’s treatment capacity whilst also improving the efficiency and quality of the treatment process, ...


  • Chemineer™ Top-Entering Agitators Installed at Severn Trent Water’s WWTW in Birmingham, UK

    Chemineer agitators are playing a key role in six newly upgraded Activated Sludge Process (ASP) lanes at Severn Trent Water’s WWTW in Birmingham. Installed in six phases with no disruption to operations, the 24 Chemineer Model 20 GT agitators are successfully homogenizing fluid streams prior to aeration, as well as ensuring that there is no return flow from the aeration lanes back ...


    By National Oilwell Varco

  • Technology for TASi: High-tech equipment for waste treatment

    It wasn't a law but a simple administrative regulation in the form of a technical guideline that provided the key impulse for the diversion of waste flows in Germany away from landfill sites. In the course of the implementation of this Technical Directive on Residential Waste (TASi), the technology for treating waste underwent an extraordinary development. This is especially true of thermal ...


    By Koelnmesse GmbH

  • New Environmental Energy Announced 2009 Annual Results

    Hong Kong, Apr 28, 2010 - (ACN Newswire) - New Environmental Energy Holdings Limited ("New Environmental Energy" or the "Group", Stock Code: 3989.HK), formerly Hembly International Holdings Limited, today reported a revenue of HK$823 million in 2009, representing a decrease of 39.3% over lastyear. Net loss attributable to the Company's equity holders amounted to HK$978 million, incurred as a ...


    By Japan Corporate News - JCN

  • U.S. EPA conducts surprise inspections targeting SoCal, NoCal, metal finishers / agency fines facilities across LA, San Fernando Valley, for hazardous waste violations (CA)

    The U.S. Environmental Protection Agency is pursuing enforcement against California metal finishing companies for violations of federal hazardous waste laws. The violations were discovered during inspections conducted in Los Angeles, Rosemead, Sun Valley, Compton, Van Nuys, South El Monte and Santa Clara during the current fiscal year. As a result of these enforcement actions, all nine companies ...

  • Hydro International promotes Neumayer to General Manager of US Wastewater Operations

    Hydro International, a leading provider of environmentally sustainable products and innovative solutions that control and treat stormwater, wastewater and combined sewer overflows, today announced that it has promoted Adam Neumayer to the position of General Manager of the company’s US Wastewater business.Adam most recently served as Applications Manager of the Wastewater unit. Prior to Hydro ...


    By Hydro International

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