Anaerobic Digestion Articles

  • PUB - Singapore - Jurong - Case Study

    Client: PUB Solution: CambiTHP - B6 Jurong The Jurong WRP, owned and operated by PUB (Public Utility Board, Singapore) is located in the Jurong district, in the west part of Singapore. The plant is treating sludge from the waste water plant. As part of the Phase 4 Expansion project PUB choose to ...


    By Cambi Group AS

  • Dairy feeds Biogas plant with whey - Case study

    Fluence added anaerobic digestion to the existing WWTP at an Italian dairy farm – without halting production. ...


    By Fluence Corporation

  • Safety Considerations at Anaerobic Digestion Plants

    Anaerobic digestion is a collection of processes which naturally breakdown organic matter to eventually produce biogas - a methane rich gas which is burned to produce both heat and electricity. The methane can also be used as vehicle fuel or injected into the gas grid. The industry is growing fast and is forecast to continue to do so with many farmers adding bio-gas plants alongside their ...

  • ADM1 modelling of large-scale covered in-ground anaerobic reactor treating sugarcane vinasse

    In this paper, we demonstrate in a clear procedure the application of the Anaerobic Digestion Model No. 1 (ADM1) to model a large-scale covered in-ground anaerobic reactor (Cigar), processing sugarcane vinasse from a biorefinery in Brazil. The biochemical make-up (carbohydrates, proteins, and lipids) of the substrate was analysed based on the food industry standards. Two distinct subsets of ...


    By IWA Publishing

  • 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

  • Evaluation of alkalinity spatial distribution in an up-flow fixed bed anaerobic digester

    In this paper, an experimental study upon alkalinity and hydrodynamic behavior in an anaerobic up-flow fixed bed reactor for the treatment of tequila vinasses is presented. Measurements of volatile fatty acids, pH, alkalinity and bicarbonate were obtained at three sampling points in the reactor in the axial axis. Then, the spatial distribution of alkalinity is studied and discussed. Moreover, ...


    By IWA Publishing

  • Degradation rate of anaerobically digested sewage sludge in soil

    The objective of this study was to monitor the degradation and obtain the mineralization fraction of anaerobically digested sludge, also known as digestate, under field conditions, when applied to the surface or incorporated into the soil. Sludge was applied to a dystrophic Inceptisol at a dose of 500 kg ha–1 yr–1 of total nitrogen, where the monitoring period of the mineralization ...


    By IWA Publishing

  • Anaerobic Digestion Reduces Microplastics in Sludge

    Anaerobic digestion can help remove microplastics — a large cause of water pollution — during the sewage treatment process Microplastics, or tiny fragments of plastic, include microbeads, the plastic pellets present in thousands of household and personal care products, including toothpaste, cosmetics, and beauty scrubs. They also include fragments from the breakdown of anything in our ...


    By Fluence Corporation

  • Using Anaerobic Biomass Digestion to Produce Hydrogen and Biofuel

    For many years, hydrogen has been considered as an alternative to fossil fuels. Now, Scientists are aiming to develop an environmentally friendly method to produce hydrogen from biomass by optimizing anaerobic digestion systems.1 Climate change, dwindling fuel resources and energy prices have spearheaded intensive efforts to detect and optimize ...


    By Edinburgh Sensors Ltd

  • The effect of different mesophilic temperatures during anaerobic digestion of sludge on the overall performance of a WWTP in Sweden

    This project was initiated to evaluate the effect of alternative process temperatures to 38 °C at the anaerobic digestion step in a Swedish wastewater treatment plant (WWTP) treating mixed sludge. The efficiency of the different temperatures was evaluated with respect to biogas production, volume of sludge produced and nutrient content in the reject water to find the optimum temperature for ...


    By IWA Publishing

  • 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

  • Methods of ammonia removal in anaerobic digestion: a review

    The anaerobic digestion of substrates with high ammonia content has always been a bottleneck in the methanisation process of biomasses. Since microbial communities in anaerobic digesters are sensitive to free ammonia at certain conditions, the digestion of nitrogen-rich substrates such as livestock wastes may result in inhibition/toxicity eventually leading to process failures, unless ...


    By IWA Publishing

  • Influence of chemically enhanced primary treatment on anaerobic digestion and dewaterability of waste sludge

    To lower energy consumption at a sewage treatment plant (STP), primary settling could be enhanced to direct more chemical oxygen demand (COD) to anaerobic digestion (AD) for increased biogas production and decreased aeration. Primary settling can be chemically enhanced by applying flocculation aids (FAs). FAs are refractory compounds that may affect all sludge treatment facilities. In this ...


    By IWA Publishing

  • Implementation of the anaerobic digestion model (ADM1) in the PHREEQC chemistry engine

    Anaerobic digestion is state-of-the-art technology to treat sludge and effluents from various industries. Modelling and optimisation of digestion operations can be advantageously performed using the anaerobic digestion model (ADM1) from the International Water Association. The ADM1, however, lacks a proper physico-chemical framework, which makes it difficult to consider wastewater of complex ...


    By IWA Publishing

  • Experimental power of laboratory-scale results and transferability to full-scale anaerobic digestion

    Anaerobic digestion is today internationally acknowledged as an environmentally sound process for energy and nutrient recovery from organic wastes, and it is the dominant sludge treatment technology in most countries’ wastewater treatment plants. Laboratory- or pilot-scale experiments are commonly used as a first step to investigate the potential of new ideas or to confirm research hypothesis ...


    By IWA Publishing

  • Modified ADM1 for high-rate anaerobic co-digestion of thermally pre-treated brewery surplus yeast wastewater

    Co-digestion of surplus yeast with brewery wastewater is a potentially economical method for recovering energy, in the form of biogas, from this difficult to dispose of by-product. In this work a modified version of the ADM1 (Anaerobic Digestion Model No. 1) was calibrated for an anaerobic digester fed with thermally pre-treated brewery yeast surplus wastewater. The model could predict changes ...


    By IWA Publishing

  • Ferrrate(VI) and freeze-thaw treatment for oxidation of hormones and inactivation of fecal coliforms in sludge

    This study examined the individual and combined effects of potassium ferrate(VI) additions and freeze-thaw conditioning for the treatment and dewatering of wastewater sludge in cold climates, with particular focus on the inactivation of fecal coliforms and oxidation of estrogens, androgens, and progestogens. The first phase of the study evaluated the effects of potassium ferrate(VI) ...


    By IWA Publishing

  • Study examines anaerobic digestion’s role in water, agriculture, and biofuels issues

    According to a new analysis, working on both clean water and biofuels production in tandem may reap significant environmental and economic benefits. For example, using anaerobic digestion to treat manure could prevent nutrient-runoff pollution and create a renewable energy source, according to the study by EcoEngineers and Goss & Associates. Looking at Iowa farming, the analysts estimated ...


    By Fluence Corporation

  • 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 ...

  • Start-up of a decentralized pilot plant for the anaerobic treatment of domestic wastewater

    This paper is about the set-up and start-up of a decentralized anaerobic pilot plant for producing domestic service water from domestic wastewater. The plant consists of a two-stage anaerobic digestion process for degrading organic matter and a third-stage for ammonium removal using the Anammox process. Each reactor was started independently with synthetic wastewater of stage-specific ...


    By IWA Publishing

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