aerated lagoon Articles

  • Lagoon Aeration - Sleep Eye, MN

    Mazzei Aeration System Solves Lagoon Odors and High Maintenance Problems Sleepy Eye, MN The Problem: A large vegetable processing facility in central Minnesota was experiencing problems with its lagoon surface aerators. The company’s treatment process includes a collection and screening assembly, two anaerobic stabilization ponds and a 40 million gallon aerated lagoon. The aeration lagoon ...


    By Mazzei Injector Company, LLC

  • Tracer studies on an aerated lagoon

    The city of Palmerston North, New Zealand, has two aerated lagoons as its secondary treatment facility. Interest about treatment efficiency led to an investigation into the hydraulics in the second lagoon to determine if further optimisation was viable. A tracer study using rhodamine WT was undertaken to ascertain the stimulus response output. Samples were also taken at 24 points within the ...


    By IWA Publishing

  • Pulp and paper mill aerated lagoon phosphorus optimization

    The Domtar (formerly Weyerhaeuser) Kamloops, BC bleached Kraft pulp mill discharges treated process wastewater to the Thompson River. The River and downstream Kamloops Lake have historically been identified as nutrient sensitive, with phosphorus contributing to algal growth. The BC Ministry of the Environment required that the mill perform a phosphorus optimization study to minimize phosphorus ...

  • The relationship between BOD:N ratio and wastewater treatability in a nitrogen-fixing wastewater treatment system

    A BOD:N:P ratio of 100:5:1 is often used as a benchmark for nutrient addition in nutrient limited wastewaters. The impact of varying nitrogen levels, whilst maintaining phosphorus constant, was studied in a simulated aerated lagoon (BOD:N of 100:0; 100:1.3; 100:1.8; 100:2.7 and 100:4.9). A synthetic wastewater was prepared using methanol, glucose and acetate as the combined carbon source, ...


    By IWA Publishing

  • Case study - Mazzei aeration system solves lagoon odors and high maintenance problems

    The Problem: A large vegetable processing facility was experiencing problems with its lagoon surface aerators. The company’s treatment process includes a collection and screening assembly, two anaerobic stabilization ponds and a 40 million gallon aerated lagoon. The aeration lagoon is used for BOD reduction and polishing before the water is discharged to a near-by creek. Several surface ...

  • Performance of Floating Horizontal Aerators in Aerated Lagoons and Oxidation Ditches

    INTRODUCTION When selecting aeration equipment to use for a specific application, issues to address include reliability, serviceability, capital cost, system appurtenances, and cost of operation and maintenance. Another important consideration is oxygen transfer rate (OTR). Horizontal floating aerators have relatively high transfer rates and have been used successfully in aerated lagoons and ...


    By S&N Airoflo Inc.

  • Electro-coagulation treatment efficiency of graphite, iron and aluminum electrodes using alum and wood ash electrolytes on a Kraft pulp and paper mill effluent

    Specific power consumption and reduction of BOD, COD, TS, pH, and chemical elements were used to determine the treatment efficiency of Fe, graphite and Al electrodes with alum and wood ash as supporting electrolytes on the effluent from a Kraft pulp and paper mill in Kenya. Five sampling points were selected along mill's effluent treatment system: primary settling tank (SP1), first aerated lagoon ...


    By IWA Publishing

  • Amnite k100/k150 case study

    This trial was carried out in the waste water treatment plant of a paper mill with severe bulking problems. Large amounts of suspended solids regularly overflowed from the secondary clarifier and the aerated lagoon had a scum layer of about 20cm on top. This scum layer contained a lot of filamentous bacteria. The effluent from the clarifier flowed into a river resulting in visual floating clumps ...


    By Cleveland Biotech Ltd.

  • Amnite k100 & k150 case study

    This trial was carried out in the waste water treatment plant of a paper mill with severe bulking problems. Large amounts of suspended solids regularly overflowed from the secondary clarifier and the aerated lagoon had a scum layer of about 20cm on top. This scum layer contained a lot of filamentous bacteria. The effluent from the clarifier flowed into a river resulting in visual floating clumps ...


    By Cleveland Biotech Ltd.

  • Cold weather ammonia reduction in municipal/industrial treatment plant case study

    Problem During cold weather this municipal wastewater treatment plant with a high percentage of industrial flow from food processing and electronics manufacturing suffered from high ammonia loadings. As temperatures dropped the plant lost nitrification. The objective of this full-scale product application program was to reestablish ammonia oxidation and reduce ammonia-nitrogen in the lagoon ...


    By Bioscience, Inc.

  • Simultaneous organic matter removal and nitrification of an inert self-supporting immersed media to upgrade aerated lagoons

    A pilot study was performed to evaluate the potential of an inert self-supported immersed fixed film media to upgrade aerated lagoons. Simultaneous organic matter removal and nitrification was assessed under different loading rates and temperatures (near 0 °C) using 12 laboratory-scale reactors operated in parallel. Test results showed that both the temperature and the load have an influence ...


    By IWA Publishing

  • Performance of a dual-power, multicellular, aerated lagoon system in Corcoran, California

    A dual-power, multicellular, aerated (DPMC) lagoon system was designed and constructed for the city of Corcoran, California. The new process brought the plant into a full compliance with California Regional Water Quality Control Board (CRWQCB) effluent limits while saving approximately $110,000 per year in energy costs. The project was a modification of an existing aerated/ facultative (A/F) ...


    By Environetics, Inc.

  • Achieving nitrification in sewage lagoons with an innovative floating RBC

    The research involved the newly developed floating rotating biological contactor (FRBC), a unique unit consisting of a rotating cage filled with hollow, spherical packing of injection molded plastic. The cage rotates to provide biomass a chance to contact both substrate and air. A partially mixed three-cell aerated lagoon was selected for the study. The lagoon received about 114 m3/d of domestic ...

  • Wastewater lagoons – a new aeration concept

    The use of wastewater treatment lagoons, or stabilization ponds, is a common practice for rural municipalities and industrial facilities. Through the years there have been numerous designs for these ‘sludge settling basins,’ ranging from facultative, partial aerated, and fully aerated systems. But the primary reason for these systems is to utilize relatively shallow earthen ponds, or ...


    By Reliant Water Technologies

  • Linking sanitation and wastewater treatment (WST)

    In both developed and developing countries, centralised and on-site wastewater treatment systems have been developed for a long time. The main function of the wastewater treatment plants (WWTPs) should be removal of pollutants including organic carbon, nitrogen and phosphorus. Technologies applied to WWTPs are mostly with biological functions such as activated sludge, stabilization reservoir, ...


    By IWA Publishing

  • Canarina DESCAR software · wastewaters · complex organic chemicals industry · commands 6

    In the center of the program window, we will draw and we will calculate the different polluting processes. We can draw using two different planes: parallel to the surface of the water (XY) and perpendicular to the surface of the water (XZ). There is a grid in the XY-plane. The coordinate origin is on the left bottom corner (X=0, Y=0) in XY-planes (parallel to the surface of the water). In ...

  • Big energy savings through better mixing, less aeration runtime- USNHWW-LOC126.001 (ID135) - Case Study

    Topics: wastewater, energy savings, MLSS/TSS, ammonia, odor control, partial mix, sludge reduction Overview: This municipal wastewater treatment system serves a community of approximately 15,000 residents. The wastewater treatment facility is a partial mix lagoon system utilizing aeration, and comprised of 3 lagoons and 1 sludge storage basin. Lagoon 1 is 9.3 acres, 9.3 ...


    By Medora Corporation

  • Treatment of the city of Oudenaarde (Belgium) sewage discharge canal case study

    Executive Summaryc A canal responsible for carrying sewage away from the City of Oudenaarde to the Scheldt River was partially dammed in 1965 leaving an area of open water of approximately 1 hectare (600 meters by 17 meters). As the canal was only partially dammed, water from the canal continued to flow into the Scheldt River. Two large municipal sewage collection discharge pipes ...


    By Nordevco Associates Ltd.

  • How to prepare your WWTP for cold weather

    Being proactive during cold weather can noticeably reduce wastewater treatment plant upsets While most people enjoy the cooler temperatures that come with fall, they can cause a well-running wastewater treatment plant to have issues almost overnight. Bacteria do not reduce BOD or reproduce as effectively during the colder months of the year. They generally favor temperatures between 68 and ...

  • Hydroflux complete wastewater treatment plant for New queensland saleyard - Case study

    The redevelopment of Dalby Regional Saleyards will ensure Dalby continues to make a significant contribution long into the future. More than 200,000 head of cattle are sold each year at the Dalby Regional Saleyards making it a vital part of Queensland's $5.4 billion beef industry. Hydroflux were engaged to design and construct the wastewater treatment plant and associated sludge handling systems. ...


    By Hydroflux Pty Ltd

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