digester gas processing Articles

  • Digester gas - case study

    BV Dairy, of Dorset, is aiming to cut its carbon footprint by more than 65% as a pioneer of liquid Anaerobic Digestion (AD) technology BV Dairy, Shaftsbury, Dorset Established in 1958, BV Dairy processes around 35 million litres of milk per year, sourced from 35 farms located near its site. The product range includes fresh and cultured dairy products for sale to the UK’s ...


    By ENER-G

  • Anaerobic Digest

    Washington, DC: NOSB Considers Digestate Use Petition The National Organic Standards Board (NOSB) of the U.S. Department of Agriculture (USDA) has agreed to consider a petition from Cenergy USA, the makers of Magic Dirt™, to allow use of digestate from anaerobic digestion plants in organic agriculture. Magic Dirt is made from digested dairy manure fibers. The soil amendment products ...


    By BioCycle Magazine

  • Co-digestion - Processes, potentials and organization Forms

    Co-digestion of organic wastes together with livestock manure has received growing interest in Germany during the last 5 years because some waste acts have been changed in order to achieve a better protection of the environment and to promote the utilisation of wastes for the formation of renewable energy and secondary products which can substitute mineral fertilisers and conventional soil ...


    By ORBIT e.V.

  • Anaerobic Digest

    Wilsonville, Oregon: Food Scraps Digester Proposed An anaerobic digester with capacity to process 50,000 to 70,000 tons/year of commercial food waste is being proposed in Wilsonville by Sustainable Organics Recycling Technology (SORT) Bioenergy. Wilsonville is in the Portland metro area. Currently, a portion of commercial food scraps from the metro area are hauled to the ...


    By BioCycle Magazine

  • 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

  • Digester gas - Stornoway Scotland - case study

    Scottish Island to be the first to utilise Anaerobic Digestion in waste treatment Comhairle nan Eilean Siar Stornoway, Isle of Lewis, Scotland “We were convinced by ENER-G’s ability to install a system that met with our requirements for a facility that is an innovative combination of waste treatments and includes the UK’s first dry Anaerobic Digestion facility” ...


    By ENER-G

  • The Effect of the Microsludgetm Treatment Process on Anaerobic Digestion Performance

    ABSTRACT Thickened waste activated sludge (TWAS) from biological treatment processes is less amenable to anaerobic digestion than primary sludge. This is due to TWAS being composed mostly of cellular material and extracellular polymeric substances (EPS) instead of more easily digestible carbohydrates and fats that are typically found in primary sludge. In an attempt to improve TWAS digestion ...

  • 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

  • Green Apples, Oranges, and Bananas – Comparison and Pre-Selection of Digester Gas-Drive Advanced Cogeneration Systems for the CBFT3 Process

    Harnessing available energy from digester gas remains a relatively untapped resource in the wastewater treatment industry. Generating “Green Power” is a major component of the Columbus Biosolids Flow-Through Thermophilic Treatment (CBFT3) project being implemented by Columbus Water Works (CWW). The latest technology in lean-burn, sparkignition combustion engines, including the Advanced ...

  • Development and Application of Biological H2S Scrubbers for Treatment of Digester Gas

    ABSTRACTAs part of the California Energy Group (Former California Energy Commission) Public Interest Energy Research (PIER) Program, biological hydrogen sulfide (H2S) biogas cleaning was evaluated. The biological H2S scrubber uses bacteria to oxidize the sulfide to produce both elementary sulfur and sulfuric acid. This system was tested at the Inland Empire Utilities Agency’s Regional Plant 1 ...

  • January Anaerobic Digest

    San Francisco Bay Region, California: ABC Digester Operator Training Course The American Biogas Council (ABC) has organized a 3-day, hands-on operator training course, February 6-8, 2018 in the San Francisco Bay area, that focuses on digester operations overall with an additional emphasis on renewable natural gas (RNG) and codigestion at wastewater treatment plants. Each morning starts ...


    By BioCycle Magazine

  • Anaerobic Digester Mixing Modifications Ease Rising Natural Gas Prices

    By modifying the process used to thicken incoming raw and waste activated sludge to the City of Massillon’s anaerobic digesters and through the establishment of proper mixing and heating of the digester contents, the City has benefited by reducing their natural gas consumption for which the average cost of natural gas has increased 275 percent from 2003 to 2006. These modifications have resulted ...

  • Digester gas - countess wear sewage treatment works - case study

    South West Water leads the way with highly efficient biogas combined heat and power Technology, utilising otherwise harmful digester gas. South West Water (SWW) provides clean water and sewerage services to over 1.6 million people, 365 days a year. Dedicated to environment and conservation issues, SWW is committed to using energy efficient Combined Heat and Power (CHP) generation systems. SWW has ...


    By ENER-G

  • Case Study: Odor Abatement Solutions

    Odor issues related to industrial processes are not uncommon.  An odor is caused by one or more volatilized organic compounds (VOCs) that humans can perceive by the sense of smell.  The challenge is that “odor is subjective, and what is sweet to some, can be a nuisance to others.   In most cases the ...

  • Maximizing Energy Recovery through Digester Gas Management System Enhancement

    ABSTRACTAdvanced anaerobic digestion practices and maximum energy recovery call for a digester gas system that reliably allows for complete biogas collection and utilization. This paper will describe the planning, design, and construction of a new digester gas management system at the East Bay Municipal Utility District’s (District) Main Wastewater Treatment Plant. The need for an upgraded ...

  • Modeling Greenhouse Gas Emissions From Activated Sludge Processes

    Dynamic simulation of activated sludge process is a common tool for wastewater treatment design and optimization. Most activated sludge models predict only the uptake of BOD and nutrients, however, they can easily be supplemented with further information regarding greenhouse gas (GHG) production to predict the generation of components such as CO2. Many published anaerobic digestion models contain ...

  • Digester Gas Powers Energy Conservation at Baltimore`s Back River WWTP

    Performance contracting provided the City of Baltimore and the Back River Wastewater Treatment Plant with the expertise and guaranteed savings to warrant implementation of a significant digester gas utilization system as well as other energy saving facility improvements. The Back River process for wastewater treatment resulted in solids that were digested, producing methane gas, a good portion of ...

  • Bio-fuels- Anaerobic digestion

    Anaerobic digestion is a series of processes in which micro organisms break down biodegradable material in the absence of oxygen. It is widely used to treat wastewater sludges and organic (agricultural) wastes.  As part of an integrated waste management system, anaerobic digestion reduces the emission of gas into the atmosphere. Anaerobic digestion is a renewable energy source because the ...


    By Triangle Ltd

  • Anaerobic Digestion—What Are the Economics?

    Although solid waste AD facilities are just starting to emerge, haulers and their customers may see some benefits if the development trend continues. A Pro Forma Model objective can be constructed for strategic planning of an anaerobic digestion facility. Anaerobic digestion (AD) of food wastes in the U.S. is a developing market that is poised for continued growth in many regions. ...


    By Waste Advantage Magazine

  • Advances in Thermophilic Anaerobic Digestion

    ABSTRACTSignificant advances have been made in the knowledge base and practical options for improving thermophilic anaerobic digestion over the past 10 to 15 years. Today, more options exist that promise to enhance the degree of stabilization achieved and finished product quality in new and retrofitted existing processes. In parallel, the body of knowledge regarding pathogen inactivation in these ...

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