sludge mixer Articles

  • Mixers and Flowmakers: Mixers for gentle treatment of activated sludge at Ringsend WWTW, Dublin

    Landia (UK) Ltd. was awarded the contract to provide the SBR tanks at the Ringsend WWTW with 74 submersible mixers. The project is the largest wastewater treatment contract in the history of the Irish State. The mixers were installed to homogenise the activated sludge in the secondary treatment of the wastewater during the phase of BOD/COD removal and partial nitrification. During this stage a ...


    By Landia

  • Mixers and Flowmakers: Mixers at Bremen-Seehausen WWTP

    Treatment of 50 million cubic meters of wastewater per year - find more information on their website. Landia has a total of 26 submersible mixers operating at this plant. 10 mixers in the denitrification (BNR = biological nutrient removal) process, 6 of them in the denitrification tanks, 4 of them in effluent channels leading to these tanks for mixing of ...


    By Landia

  • Mixers and Flowmakers: Mixers at BNR plant in Borås, Sweden

    Borås Treatment Plant, the Gässlösaverket, is situated at the river Viskan which is also the recipient. The plant is the largest single discharge to the Viskan, and since the water does not pass any lakes on its way to the sea, the reduction of nitrogen is small. Due to requirements with regard to the reduction of nitrogen discharge set out by the Swedish environmental authorities, the Borås ...


    By Landia

  • Mixers and Flowmakers: Flowmakers at the Rugby WWTP, UK

    We have installed 8 flowmakers, type POPL-I, in the aeration tank at the municipal wastewater treatment plant in Rugby Newbold. The flowmakers create the specified velocity in the tanks which are equipped with bottom aeration. At the same time the sludge is homogenized and sedimentation is prevented. The units have operated continuously since 1999. Landia supplied mixers to the sludge tanks in ...


    By Landia

  • WWTP Sludge reduction case study

    Introduction The City of Spring Valley, IL was seeking bioaugmentation to reduce the economic burden of sludge dredging and disposal and to evaluate the possibility of restoring the microbiological activity in the lagoon. The lagoon was flooded several times from the near-by Illinois River, which created different strata of inorganic silt/organic sludge and densely packed sludge at the ...

  • Mixers and Flowmakers: Flowmakers at the Voreppe WWTP, France

    We have installed 8 flowmakers, type POPL-I, in aeration tanks with bottom aeration – each tank is 9,000 m³. The flowmakers create the specified average velocity of 0.3 m/sec. The sludge is homogenized and sedimentation is prevented. The plant has been in operation since 1994. The units have a total operating time of more than 80,000 ...


    By Landia

  • Mixers and Flowmakers: Flowmakers at the Lynetten WWTP, Copenhagen

    In 1995 Landia installed 95 flowmakers, type POPL-I, in the aeration tanks at the Lynetten Wastewater Treatment Plant in Copenhagen. The wastewater treatment plants Lynetten and Damhusåen to which Landia also supplied mixers treat a total of 75-100 mio m³ wastewater a year - approx. 1.1 mio. person equivalents. The Lynetten WWTP is the largest wastewater treatment plant in Denmark. The client ...


    By Landia

  • Case study - Sludge digestion/thickening optimizes treatment

    Overview: Big Park Domestic Wastewater Improvements District in Arizona had constructed a new 500,000 gallons per day biological wastewater treatment system in 1997. As time passed, the aging plant was unable to keep up with increasing demands. Challenge: In 2012, the District started working with Sunrise ...

  • Mixers and Flowmakers: Mixing mine water precipitate from a Tin Mine in the UK

    Landia (UK) Ltd. was awarded a contract to provide the pre-reaction chambers and sludge holding tanks at Wheal Jane Mine Water Treatment Plant, Cornwall with a total number of 7 submersible mixers. Working conditions are very harsh on this plant where the mixers will be homogenizing sludges in the process of purifying a heavily contaminated industrial effluent. The mixers were supplied in ...


    By Landia

  • Common Treatment Technologies for Radionuclides in Soil, Sediment, and Sludge

    Unlike organic contaminants (and similar to metals), radionuclides cannot be destroyed or degraded; therefore, remediation technologies applicable to radionuclides involve separation, concentration/volume reduction, and/or immobilization. The most commonly used treatment technology for radionuclides in soil, sediment, and sludge is solidification/stabilization (S/S). This treatment technology is ...

  • Processing Wastewater Sludge Using Dewatering Containers

    The relative cost of dewatering equipment varies widely and is directly related to the processing rate. For smaller utilities that need to dewater sludge in batches, dewatering containers are an alternative that can be relatively inexpensive and simple when compared to other technologies on the market. The most common type of dewatering container is based on a roll-off box design, although any ...


    By Flo Trend® Systems, Inc.

  • Komax teflon lined mixer simplifies acid injection for power plant

    A major source of waste water in many power plants is the waste stream that results from ion exchange used for demineralizing the boiler feed water. The alkaline regeneration waste stream produced by the ion exchange process requires the addition of an acid to this stream before discharge from the plant. Regulatory authorities typically require the effluent to have a near neutral pH before ...


    By Komax Systems, Inc.

  • Sludge suspension from numerous differing steel industry residues

    econ have been active for many years as a supplier of mixing units for the metal and steel industry. One of our long term clients requested that econ quote a system to produce a highly viscous suspension from nu-merous differing residues. The aim was to use this suspension as a protective layer inside the transport ves-sels of the hot, molten slag. Thus, a number of differing technical ...


    By econ industries GmbH

  • Towards energy neutrality by optimising the activated sludge process of the WWTP Bochum-Ölbachtal

    As a result of Ruhrverband's regularly performed energy audits the wastewater treatment plant (WWTP) Bochum-Ölbachtal shows substantial deficits concerning energy efficiency. Due to the energy consumption of internal recirculation, mixers and return activated sludge (RAS) pumping the existing pre-denitrification process configuration offers a specific energy consumption for biological ...


    By IWA Publishing

  • Solidification / Immobilisation of sludge from physical-chemical WWT process

    In 2003 econ received an inquiry from a service company operating an industrial waste water treatment plant. At the end of the physical-chemical WWT process this client generated metal-hydroxide sludge from his chamber filter presses. Originally he discharged the sludge into skips and brought it to a hazardous waste landfill. At this landfill, a solidification process was used to stabilise ...


    By econ industries GmbH

  • Activated Sludge Treatment Plant - Eatonton, Georgia - Case Study

    Solids management at municipal wastewater treatment plants is crucial in maintaining operating efficiencies and permitted discharge levels. Drying beds and mechanical methods of dewatering bio-solids can be labor intensive and inefficient for rapid solids removal. Miratech Geotube" Dewatering Technology offers munic-ipalities a cost effective solution for rapid solids removal and long term solids ...

  • Case study - Supplemental aeration nearly eliminates filamentous sludge bulking

    The Dubai Investments Park Wastewater Treatment plant in the United Arab Emirates faced challenges in their oxidation ditch due to filamentous sludge bulking, resulting in poor sludge settling in the secondary clarifier. Supplemental aeration was needed to eliminate the filamentous sludge bulking. Challenge: The oxidation ditch is treating an ...

  • The source for floating WWT equipment brush rotors - mixers - polishing RBCs - Case Histories

    Products have been utilized in all types of wastewater applications including Activated Sludge Basins, Oxidation Ditches, Aerobic Digesters, EQ Basins, as well as Lagoons. Products can be used in anyaerated basin or lagoon that needs aeration, no matter the size or shape. These are not just surfaceunits -Mixing Depth & Homogeneous Mixing are not issues. Upgrade of 200 HP Orbal Oxidation ...


    By S & N Airoflo, Inc.

  • Homogenous mixing for shortening of composting processes - Case Study

    Various treatment processes are used today for manufacturing compost, of which two are of particular interest in terms of mixing and treatment technology. They are open composting and container composting. In both cases e.g. sewage sludge (wet and dry), chopped paper, loppings, green waste, and sawdust are pre-mixed with the possible addition of small amounts of active substances. The task of ...


    By AVA - Huep GmbH u. Co. KG

  • Case study – Gem-D series

    Introduction Clean Water Technology, Inc., the creator of the Gas Energy Mixing (GEM) System, introduces their newest in technology The GEM - D Series for municipal water and wastewater applications. The GEM-D Series is a hybrid dissolved air – flotation system. What makes the GEM-D Series better than the rest? Introduction of air through Liquid Solid Gas ...


    By Clean Water Technology, Inc.

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