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Activated Sludge Applications

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    Water & wastewater treatment solutions for municipal industry

    Fluence has decades of experience delivering sustainable water and wastewater solutions to communities large and small. Fluence has more than 30 years of experience in the design, construction, and operation of water and wastewater treatment plants for municipal clients, government entities, communities, emergency relief, and private use.

    By Fluence Corporation based in White Plains, NEW YORK (USA).

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    Hazardous waste treatment solutions for oil and gas industry

    There are a wide amount of applications for our VacuDry® process within the oil and gas industry. A large variety of wastes and by-products that are generated in the oil & gas production chain can be treated effectively and sustainably. In past decades, numerous thermal desorption processes have been implemented worldwide, using a variety of heating chamber designs to separate hydrocarbons from the mineral solids. Such standard TDUs work under atmospheric pressure which can lead to safety risks, high energy consumption, larger emissions and limited flexibility regarding altering feed materials. Due to its unique design, the complications outlined above are avoided throughout the VacuDry® process. When it comes to treating standard oily wastes, mercury-containing waste streams, NORM, and especially for the recovery of highly valuable drilling fluids from drill cuttings; our vacuum thermal desorption process (i.e. vacuum distillation) is economically unbeatable.

    By econ industries GmbH based in Starnberg, GERMANY.

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    Water & wastewater treatment solutions for food & beverage industry solutions

    Our best-in-class solutions serve the needs of a wide range of food and beverage manufacturers across the globe. Fluence has more than 30 years of experience in delivering water, wastewater, and waste-to-energy projects to the food and beverage industry across the globe. Our unique technologies provide best-in-class treatment for incoming ingredient water, reduce operating costs by turning waste into a resource, and help our customers enhance their products.

    By Fluence Corporation based in White Plains, NEW YORK (USA).

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    Aeration and mixing technologies for activated sludge systems

    The activated sludge process uses a mass of organisms to aerobically treat wastewater and is used to remove biodegradable organics from both municipal and industrial wastewaters.

    By Aeration Industries International (AII) based in Chaska, MINNESOTA (USA).

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    Treatment, Optimization and Design for WWTP's

    The purpose of the work is to demonstrate the rationale, procedures and advantages of using process simulation to evaluate the steps involved in process upgrades from conventional or fully aerobic process conditions to multi stage systems capable of operating as a BNR system. In the author's experience and the conclusions of this presentation are that the use of these systems in daily operations and in the preparation for process upgrading is empowering and economically advantageous. SASSPRO(Steady State Activated Sludge Simulator, Program)

    By WeDoTanks.com LLC based in Sahuarita, ARIZONA (USA).

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    Determination of water-soluble forms of inorganic and organic anions in soils, clays, peat, wastewater silt, activated sludge, and bottom sediments

    The method allows determination of water-soluble forms of inorganic (chlorides, sulfates, nitrates, fluorides and phosphates) and organics (acetates, formates, and oxalates) anions in soils, clays, peats, wastewater silts, activated sludges and bottom sediments by capillary electrophoresis method. 

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Real-time Control System for Wastewater Treatment Plants

    Wastewater treatment plants (WWTP) are subject to large variation in flow and load, not to speak of uncertainties on the composition of the incoming wastewater. On top of that, the activated sludge treatment process, as used by the vast majority of treatment plants, is difficult to control due to the complex behaviour of the biological process. Nevertheless WWTPs are run 24/7, with operators and management challenged to meet ever tightening environmental regulations.

    In order to meet the operational demands of modern-day plants, a new control system was developed. Proprietary control algorithms were introduced based on a large set of data from nutrient measurements in various WWTPs. The customer`s benefits are twofold: (1) achieving optimum effuent quality and, at th same time, (2) lowering energy needs and dosing of commidity chemicals.

    By AppliTek NV based in Nazareth, BELGIUM.

  • Waste water respirometry solutions for process optimisation

    Respiration rate of activated sludge has been recognised as a key controlling element in the modelling of process control, by the International Water Association Task Group. Actual respiration rate of the sludge in the aeration tanks, as well as the endogenous and maximum respiration rates are variables that indicate the rate of BOD removal and aeration requirements. The maximum respiration rate is also closely linked to the Critical Oxygen Concentration point, that is, the point at which diffusion over the bacterial cell walls ceases and therefore biodegradation is significantly compromised.

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

  • Waste water monitoring solutions for wastewater treatment industry

    Improved waste management through automation can deliver more efficient waste treatment, reduced energy and chemical consumption and improved effluent quality. The cost of treatment and trade discharge can thus be significantly reduced.

    By Pollution & Process Monitoring Ltd based in Sevenoaks, UNITED KINGDOM.

  • Waste processing and composting solutions for waste and recycling industry

    QM Environmental Services offers a range of products that can help to improve the processing and composting of organic waste forms or to solve odour problems associated with the transport, storage and processing of waste in general

    By QM Environmental Services Ltd. based in The Hague, NETHERLANDS.

  • Pi² Technologies for Water Treatment

    The waste water treatment plants are often singled out by local resident as the source of bad odours in the neighbourhood. The sources of these odours are numerous: pre-treatment, activated sludge, etc.

    By Pi² Technologies Inc based in Montreal, QUEBEC (CANADA).

  • Waste water respirometry solutions for toxicity testing

    If industrial wastewater entering a treatment works contains toxic components the rate of biodegradation will be inhibited or stop completely. This can result in failed consents and will certainly give rise to operational problems. Visible indications include deflocculation, bulking and the appearance of filamentous bacteria. Sometimes, there are no visible effects. When the sludge bacteria are inhibited, there is the possibility of toxicity carryover in the effluent that is discharged to receiving waters. With new environmental legislation being introduced, worldwide, to protect the natural environment, toxin discharge is now a serious concern for treatment plant managers.

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

  • Biological waste water treatment

    Biological waste water treatment - activated sludge systems - biofilm systems - submerged fixed film system - MBBR-Systems - MBR-Systems - SBR Systems

    By Environmental Engineering Doellerer GmbH based in Seefeld, GERMANY.

  • Waste water respirometry solutions for monitoring activated sludge health - sour test

    Respiration rate monitoring of Antwerp treatment works showed periods when the activated sludge was up to 40% inhibited, with resultant sludge washout episodes. Using the Health monitoring test, a pattern of ‘normal’ respiration rates for a plant can be determined. Lower respiration rates will alert the treatment works to a chronic toxicity problem, allowing corrective actions to be taken. Toxicity monitoring can now be carried out on a routine daily basis, at all treatment works receiving potentially toxic wastewaters. This is especially important if there has been a history of poor plant performance.

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

  • DigeTherm™ Hydrolysis and themphilic digestion

    Project comprises ca. 200m3/d of municipal Waste Activated Sludge mixed with primary sludge (includes some waste from milk industry). Optional delivery of additional WAS, ethanol stillage, corn substrates etc.

    By Symbiona SA based in Warszawa, POLAND.

  • Microbial formulations for municipal sector

    MICROCAT microbial formulations from Bioscience, Inc., are blends of specialized, naturally occurring microbes and other ingredients that work together to solve the most common, damaging problems inherent to municipal wastewater plants. By augmenting existing microbial populations, MICROCAT products naturally aid in stabilizing municipal sewage treatment and collection systems, enhancing their ability to break down difficult-to-degrade wastes and handle highly variable waste treatment conditions.

    By Bioscience, Inc. based in Allentown, PENNSYLVANIA (USA).

  • Filamentous Bulking Control with Hydrogen Peroxide

    Basis of Control with Hydrogen Peroxide Hydrogen peroxide may be used to correct a serious filamentous bulking situation or, preferably, to prevent one from occurring until adjustments can be made to remove the cause. When applied to the return activated sludge, hydrogen peroxide supplies dissolved oxygen which helps restore the microbial activity necessary for effective operation, while selectively oxidizing the filaments which retard settling. The effective dose of hydrogen peroxide is a function of time and concentration, and varies from plant to plant. To correct a serious bulking problem, immediate results may be obtained by adding 100 - 200 mg/L H2O2 to the biosolids recycle line. Once control of bulking is obtained, the dose may be reduced to 25 - 50 mg/L H2O2 to prevent re-occurrence. Practical Considerations Filamentous bulking of municipal activated sludge is not a normal occurrence, and suggests more fundamental problems may be at work (e.g., low dissolved oxygen, high sulfide input, heavy organic loading, nutrient imbalance, improper sludge age, or rapid changes in influent characteristics). Consequently, the use of chemicals such as hydrogen peroxide to control bulking should be pursued in concurrently with more fundamental corrective measures.

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

  • Ozone Water Treatment for Activated Sludge Process Plants

    Ozone breaks up filaments and improves settling characteristics of the sludge... Filamentous sludge is a common problem at activated sludge plants. With ozonation of the return sludge flow it is possible to reduced the amount of filamentous bacteria in the sludge and significantly increased the settling properties of the sludge.This in turn means better performance of the activated sludge process. When a bioreactor is connected to the sludge line the removal of the damaging filamentous bacteria means higher quality sludge in the bioreactor, which leads to higher biogas production.

    By Primozone Production AB based in Löddeköpinge, SWEDEN.

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