digester equipment Articles

  • Equipping Digester For Feedstock Flexibility

    Bayview Flowers is a high value, greenhouse floriculture operation in Jordan Station, Ontario, Canada, that supplies wholesalers and retailers across North America. In 2007, the company installed an anaerobic digester (AD) plant to generate 250 kW of renewable energy. The system was installed to take advantage of a province-wide Feed-In-Tariff (FIT) incentive program to increase the amount of ...


    By BioCycle Magazine

  • Kranj (SLO) Municipal Plants - Case Study

    Digester: 5.000 m³ sewage sludge digestion Scope of services: sewage sludge digester agitator, flare, gas equipment, gas storage, desulphurization Start-up: ...

  • What The AD Industry Can Learn From Solar Standardization

    Applying a proven project finance model to the anaerobic digestion industry is the best way to ensure projects get built and operate profitably over the long-term. THE U.S. anaerobic digestion (AD) market represents an attractive, multibillion dollar investment opportunity. However, structural industry obstacles must be overcome before the market can realize its full potential. As a ...


    By BioCycle Magazine

  • Recycling Energie AG (CHE) Disposal Company - Case Study

    Digester:  2x 2.000 m³ Post digester: 2 x 2.600 m³ Gas storage: 2 x 930 m³ Input substrates: manure, grass cuts, food waste Scope of services:  concept creation, consulting, detail engineering, delivery of equipment, general project supervision, start-up, operational support and service Start-up: ...

  • CS Bioenergia (BRA) Disposal Company - Case Study

    Digester: 2 x 5.000 m³ Post Digester: 3.400 m³ Gas storage: 3.250 m³ Input substrates: primary and secundary sludge, food waste Scope of services:  concept creation, consulting, detail engineering, delivery of equipment, general project supervision, start-up, operational support and service Estimatet completion date: ...

  • Golf and a Small Anaerobic Digester

    Golf course associations and golf clubs around the world are looking at ways to improve the sport’s environmental criteria.  Sustainable developments and low carbon footprint operations are the name of the game.  As golf courses use fertiliser for the courses, power for the maintenance machinery, and power for the golf carts, there are many areas where sustainability of the sport ...


    By SEaB Energy Ltd.

  • Innovation Key To Biosolids Digestion

    A $400 million project at the Blue Plains Advanced Wastewater Treatment Plant (AWTP) in Washington, D.C., involves building an innovative biosolids management system comprised of a thermal hydrolysis process, four 3.8-million gallon mesophilic digesters (measuring 70-ft tall by 100-ft in diameter) with fixed covers, a cogeneration system consisting of three 4.6-MW Solar Mercu ry 50 gas turbines ...


    By BioCycle Magazine

  • Aerators Enhance Aerobic Digestion Process

    The city of Eden,N.C.,operates an extended aeration process designed for an average flow rate of 13.5 mgd with a mixed liquor suspended solids concentration that typically checks in about 6,000 mg/l. This high biomass concentration is necessary to provide a well-settling sludge and good effluent quality. Further, the plant influent is approximately 40% domestic wastewater and 60% industrial ...


    By S & N Airoflo, Inc.

  • 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 ...

  • The effect of mixing conditions on anaerobic digester performance

    The basic principle of aerobic wastewater treatment is the conversion of some parts of organic matters to biomass and this causes production of excessive sludge in aerobic processes. This excessive sludge is withdrawn from time to time to prevent accumulation of biomass in aeration basin. In most cases, this sludge requires the stabilization before the dewatering and disposal. Different processes ...


    By ORBIT e.V.

  • Digester Developer Taps Natural Gas Markets

    IN the late 1990s, Dan Eastman and two colleagues were researching business opportunities in the renewable energy industry. They were looking for a commercially viable technology that could take renewable energy from an experimental phase to a solid business investment. In 1999, Eastman and his partners founded Microgy, Inc., with its base in Wisconsin. The company licensed the Xergi anaerobic ...


    By BioCycle Magazine

  • Molecular Chemical Grinder Improves Digestion in Sludge

    Municipal wastewater treatment plants (WWTPs) can reduce the costs and liabilities of sludge handling and disposal and increase their organic solids conversion rate with the Advanced Fluidized Composting (AFC) Process or the Advanced Fluidized Co-Digeson & Co-Generaon (AFC2) Process from BioConversion Soluons, LLC (BCS). The conventional sludge treatment techniques of aerobic and anaerobic ...

  • New processes for the improvement of sludge digestion and sludge dewatering

    INTRODUCTIONThe examination of numerous sewage sludges from municipal wastewater treatment plants leads to the conclusion that on the one hand dewaterability of these sludges worsens and that on the other hand dewaterability of sludges becomes more and more important due to increasing disposal costs. Especially wastewater treatment plants with inflows from the food processing industry often face ...


    By Cambi Group AS

  • Digester Developers Target Mixed Organic Waste Streams

     emerging group of commercial companies see a viable business opportunity in North America around building, owning and operating larger scale anaerobic digestion (AD) facilities to process mixed organic waste streams. In some instances, the projects being proposed and constructed only include anaerobic digester operations. In others, there is a combination of digestion with back-end ...


    By BioCycle Magazine

  • Combined experiences of thermal hydrolysis and anaerobic digestion – latest thinking on thermal hydrolysis of secondary sludge only for optimum dewatering and digestion.

    ABSTRACT The basic principles of batch thermal hydrolysis process (THP) are well known as a pre-treatment to anaerobic digestion (AD) . Early work done in the 70s in the USA and the 80s in Japan demonstrated the optimum time and temperature for thermal hydrolysis being 340 F for 30minutes. These principles have been put into full practice in 20 plants around the world at plants ranging from 5 ...


    By Cambi Group AS

  • Optimising thermal hydrolysis for reliable high digester solids loading and performance

    Chertsey (Thames Water) Cambi thermal hydrolysis was refurbished during the early part of 2005 and started operation in August 2005 under a separate contract to Cambi operations.  The plant has run continuously since that time except for planned shut downs (inspection and Christmas day) with 2 hours of unplanned shut down.  Initially it was envisaged the plant would achieve an average ...


    By Cambi Group AS

  • The Cambi Thermal Hydrolysis Process (THP) – dramatically improving sludge digestion and dewatering

    CAMBI MILESTONES 1990 - First development work following research work of Li and Noike 1995 – HIAS Norway – first full scale plant – still working very well after 11 years 1998 - 2002 rapid increase in projects, Denmark, England, Norway, Scotland, Japan, Ireland – new challenges and risks to be overcome 2000 - 2005 some problem solving ...


    By Cambi Group AS

  • Measuring methane at the UK`s first viable compact anaerobic digester plant

    At the UK's first viable compact anaerobic digester (AD) plant aimed at local food waste treatment, a Geotech GA3000 fixed biogas analyser monitors methane (CH4), carbon dioxide (CO2), oxygen (O2) and hydrogen sulphide (H2S). The plant, a modular scalable AD system, unveiled by React Environmental in July 2012 at Llangadog, Carmarthenshire, can handle some 1,000 ...


    By Geotech

  • Manure Spills: Prevention, Detection, Control Options, and the Role of Anaerobic Digesters

    Manure Spills: Prevention, Detection, Control Options, and the Role of Anaerobic Digesters FOR IMMEDIATE RELEASE By Steven Sell, Biologist & Application Engineer Wednesdays August 27, 2014 ...


    By BIOFerm™ Energy Systems

  • Low energy mixing to optimize anaerobic digestion at the Kitchener WWTP

    The existing Kitchener Wastewater Treatment Plant (WWTP) is a conventional secondary treatment facility, with a rated capacity of 122,745 mVd. The plant is comprised of two separate secondary treatment plants (Plant 1 and Plant 2) served by a common headworks facilities and primary clarifier facilities. Plant 1 was constructed in the early 1960s and Plant 2 was constructed in the mid-1970s. Both ...

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