Surface Aeration Articles

  • Supplemental Aeration Nearly Eliminates Filamentous Sludge Bulking in Dubai - Case Study

    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 ...

  • TORNADO™ Surface Aerators Reduce Odors at Wastewater Reservoir - Case Study

    PROJECT DETAILS LOCATION Chicago, Illinois, U.S. CUSTOMER U.S. Army Corps of Engineers, for the Chicago O’Hare Reservoir SOLUTION Aeration of wastewater treatment reservoir TECHNOLOGIES 100-horsepower TORNADO® Surface Self-Aspirating Aerators ...


    By Fluence Corporation

  • The Climb To The Top

    Back in the late 1980’s when market drivers created the cost-effective option of using above-ground circular tanks for industrial activated sludge processes, there were some early valuable lessons for both aeration equipment manufacturers and plant operators. As production plants got away from in-ground basins, one of the more simple innate operational checks became more challenging; ...


    By KLa Systems, Inc.

  • Turbulence in continuous flow surface aeration systems

    Turbulence characteristics in an optimal continuous surface aeration system were investigated in this study. The experimental system consists of a rectangular tank, where flow is driven by equally spaced aerators placed on the liquid surface. The mass-transfer coefficient and turbulent parameters at the tank's inlet and outlet were measured to enable analysis of their interdependent ...


    By IWA Publishing

  • Case study - Pure oxygen injection pilot test

    Introduction: The Moccasin Bend WWTP uses pure oxygen produced by a cryogenic oxygen plant for activated sludge treatment of the influent waste stream, which consists of municipal and industrial wastes. The waste stream contains a high proportion of high strength industrial waste, which results in a typical COD loading of about 2000 mg/L, which is approximately four times the strength ...

  • Supplemental aeration nearly eliminates filamentous sludge bulking - Case Study

    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: ...

  • Cost-efficient ditch provides a sustainable solution - Case Study

    City needed a system that would weather the Upper Peninsula’s harsh winters This Wastewater Treatment Plant in Michigan sits on the shores of rugged and picturesque Lake Superior in the state’s Upper Peninsula. When the city ...

  • Slowhill Copse UK Aerators - Case Study

    Slowhill Copse Marchwood WTW (Southampton, Hampshire) was originally constructed in the 1960's. The latest upgrade includes an improvement of the existing treatment process to meet the newest requirements. Landustrie supplied sixteen (4 per aeration lane) low speed surface aerators, type Landy-7 complete with drive units, bottom baffles and foundation plates. The Landy aerators dimension ...


    By Landustrie Sneek BV

  • Vortex in baffled surface aerator

    Baffled surface aerator and mixing tanks are different on the basis of the rotor placement. In mixing tanks, rotors are placed very deep in the tank, thus vortex creation can be prevented by placing the baffles. By definition, rotors are placed at or near the surface of water in surface aeration systems; complete prevention of vortex creation cannot be achieved by installing the baffles. Vortex ...


    By Inderscience Publishers

  • Since 1984, mill reduces sludge, increases winter performance - Case Study

    An over-all improvement in the basin’s flow pattern is evident . Problem This southern pulp and board mill faced the problem of an aging aeration system in its wastewater treatment lagoon. Maintenance was getting prohibitive on the 50 hp (37 kW) & 100 hp (75 kW) slow speed surface aerators, totaling 1,200 hp. 'New slow speed aerators were very expensive and maintenance ...

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