Operation experiences at the MBT Maresme, the latest wet anaerobic digestion plant for MSW built in Spain
© Wasteconsult International (5/2015)
The MBT Maresme is the latest wet anaerobic digestion plant for the Organic Fraction from Municipal Solid Waste (MOR -Materia Orgánica Residual), that has been built in Spain, in countercurrent to the observed development towards MBT plants with only composting technology. In the present paper a short presentation of the MBT Maresme is given before the operation experiences during the start-up phase and the guarantee tests are discussed. Despite the challenge the operation of this facility under aggravating circumstances implied, the achieved performance and clearly advantageous energetic balance confirm the integration of a digestion step in MBT plants as a valid and valuable concept.
© Wasteconsult International (5/2015)
The MBT Maresme is the latest wet anaerobic digestion plant for the Organic Fraction from Municipal Solid Waste (MOR -Materia Orgánica Residual), that has been built in Spain, in countercurrent to the observed development towards MBT plants with only composting technology. In the present paper a short presentation of the MBT Maresme is given before the operation experiences during the start-up phase and the guarantee tests are discussed. Despite the challenge the operation of this facility under aggravating circumstances implied, the achieved performance and clearly advantageous energetic balance confirm the integration of a digestion step in MBT plants as a valid and valuable concept.
Liquid Digestate-free Anaerobic Digestion with the HZI-KOMPOGAS® plug flow digester
© Wasteconsult International (5/2015)
The KOMPOGAS® plug flow fermentation is a highly efficient process for generate energy from waste. The digestate from the fermentation has in this case due to the System to a water content between 70 and 75 percent. Due to its high content of nutrient salts press water can generally be used without further purification as liquid manure in agriculture. In many regions or even countries, there is due to intensive livestock farming, already a large oversupply of liquid manures or spreading is not allowed by law. Also the logistic could be difficult and expensive.
© Wasteconsult International (5/2015)
The KOMPOGAS® plug flow fermentation is a highly efficient process for generate energy from waste. The digestate from the fermentation has in this case due to the System to a water content between 70 and 75 percent. Due to its high content of nutrient salts press water can generally be used without further purification as liquid manure in agriculture. In many regions or even countries, there is due to intensive livestock farming, already a large oversupply of liquid manures or spreading is not allowed by law. Also the logistic could be difficult and expensive.
Percolate anaerobic digestion plant as component of MBT Erfurt Ost
© Wasteconsult International (5/2015)
The GICON® Process, a two-phase, two-stage high solids anaerobic digestion process, has proven highly suitable for the processing of structurally-complex and often impurityladen feedstocks such as organic wastes of municipal or commercial origin for the Generation of biogas. Recently, this process was integrated into an existing mechanical and biological waste treatment facility in Erfurt, Germany, by modifying intensive composting boxes to produce percolate for fermentation in a GICON® Process fixed-bed methane digester. The application of the GICON Process enabled the exploitation of an energy source (the organic fraction of the feedstock) and the reduction of the residence time for the material in the composting boxes. GICON’s experiences with the development and realization of this project, as well as observations on the performance of the plant will be discussed.
© Wasteconsult International (5/2015)
The GICON® Process, a two-phase, two-stage high solids anaerobic digestion process, has proven highly suitable for the processing of structurally-complex and often impurityladen feedstocks such as organic wastes of municipal or commercial origin for the Generation of biogas. Recently, this process was integrated into an existing mechanical and biological waste treatment facility in Erfurt, Germany, by modifying intensive composting boxes to produce percolate for fermentation in a GICON® Process fixed-bed methane digester. The application of the GICON Process enabled the exploitation of an energy source (the organic fraction of the feedstock) and the reduction of the residence time for the material in the composting boxes. GICON’s experiences with the development and realization of this project, as well as observations on the performance of the plant will be discussed.
Compost-like material or thermal valorization – impact on MBT Plant economics and environmental aspects – Case studies in Portugal and UK
© Wasteconsult International (5/2015)
The paper focuses on the utilisation of the solid product from the biological Treatment stages of three MBT Plants which treat the organic fraction of MSW by means of wet mechanical pre-treatment units followed by anaerobic digestion. The experiences of two MBT Plants in Portugal (CVO Valorlis and CVO Suldouro) which produce compost-like material are contrasted with the experiences at the MBT Bredbury Parkway (UK) which, by drying the digested solids, produces a RDF with low calorific value for further use in thermal valorisation. The impact of these two different approaches on the operating costs for the treatment of the digested solids as well as the environmental aspects for both valorization paths is discussed.
© Wasteconsult International (5/2015)
The paper focuses on the utilisation of the solid product from the biological Treatment stages of three MBT Plants which treat the organic fraction of MSW by means of wet mechanical pre-treatment units followed by anaerobic digestion. The experiences of two MBT Plants in Portugal (CVO Valorlis and CVO Suldouro) which produce compost-like material are contrasted with the experiences at the MBT Bredbury Parkway (UK) which, by drying the digested solids, produces a RDF with low calorific value for further use in thermal valorisation. The impact of these two different approaches on the operating costs for the treatment of the digested solids as well as the environmental aspects for both valorization paths is discussed.
First year biomethane plant of BSR in Berlin: From biowaste to biofuel
© Wasteconsult International (5/2015)
Generation of biomethane from biowaste is thought to be a very interesting and climate friendly option for substitution of fossil fuels. However comprehensive data considering all relevant aspects of plant operation and subsequent processes with reference to emissions, energy efficiency and climate protection are rare. To close this gap an extensive program with data collection and measuring for 1 year was conducted by BSR in Berlin to get a detailed description of the recently installed Biogas West process and to evaluate the greenhouse gas balance of this process. The resulting key figures and balances give a reliable insight in what is fact today about generation of biofuel from biowaste by anaerobic digestion according to best practice and high emission reduction standards.
© Wasteconsult International (5/2015)
Generation of biomethane from biowaste is thought to be a very interesting and climate friendly option for substitution of fossil fuels. However comprehensive data considering all relevant aspects of plant operation and subsequent processes with reference to emissions, energy efficiency and climate protection are rare. To close this gap an extensive program with data collection and measuring for 1 year was conducted by BSR in Berlin to get a detailed description of the recently installed Biogas West process and to evaluate the greenhouse gas balance of this process. The resulting key figures and balances give a reliable insight in what is fact today about generation of biofuel from biowaste by anaerobic digestion according to best practice and high emission reduction standards.
Peripheral fermentation of organic waste – Insights and data from practice
© Wasteconsult International (5/2015)
The fermentation of organic waste is a valuable source for alternative energy and nutrients in form of fertiliser. To increase the treatment of organic waste quantities, peripheral digestion plants can have a significant contribution. Although small scale digestion units have higher Investment costs based on the waste quantities processed, a specialisation on suitable wastes and an efficient use of alternative energy and fertiliser can guarantee an economic and ecological success.
© Wasteconsult International (5/2015)
The fermentation of organic waste is a valuable source for alternative energy and nutrients in form of fertiliser. To increase the treatment of organic waste quantities, peripheral digestion plants can have a significant contribution. Although small scale digestion units have higher Investment costs based on the waste quantities processed, a specialisation on suitable wastes and an efficient use of alternative energy and fertiliser can guarantee an economic and ecological success.
HTC: Key technology in Biomass waste treatment
© Wasteconsult International (5/2015)
Hydrothermal carbonization is the physiochemical process by which organic waste materialis converted into HTC biocoal and process water in a wet procedure at about 230 degrees temperature and 25 bar pressure within several hours. Hydrothermal carbonization is the industrial reproduction of the natural process by which biomass has been converted into fossil coal for millions of years. In this paper and in the presentation of Alfons Kuhles is the procedure of “Hydrothermal carbonization” explained, the GRENOL continuously operating HTC reactor, the mass energy balance of the GRENOL HTC procedure, usages and benefits of Hydrothermal carbonization as compared to the more established procedures of combustion, fermentation and anaerobe conversion (e.g. biogas production). In sum, HTC offers a new alternative procedure to process organic waste in an environmentally friendly manner, and to close the cycle of waste Management.
© Wasteconsult International (5/2015)
Hydrothermal carbonization is the physiochemical process by which organic waste materialis converted into HTC biocoal and process water in a wet procedure at about 230 degrees temperature and 25 bar pressure within several hours. Hydrothermal carbonization is the industrial reproduction of the natural process by which biomass has been converted into fossil coal for millions of years. In this paper and in the presentation of Alfons Kuhles is the procedure of “Hydrothermal carbonization” explained, the GRENOL continuously operating HTC reactor, the mass energy balance of the GRENOL HTC procedure, usages and benefits of Hydrothermal carbonization as compared to the more established procedures of combustion, fermentation and anaerobe conversion (e.g. biogas production). In sum, HTC offers a new alternative procedure to process organic waste in an environmentally friendly manner, and to close the cycle of waste Management.
SolidWasteSim – Simulation of solid waste treatment
© Wasteconsult International (5/2015)
A critical analysis of mechanical processes in waste treatment plants hints at vulnerablespots in the interaction of plant units and deployed heterogeneous materials. The Simulation of mechanical processes in waste treatment may depict the total material flow in a plant and as such, contribute to a better understanding of the behaviour in heterogeneous materials, to identify bottlenecks, to check plant modifications and hence, to Support planning and reducing time for implementation period.
© Wasteconsult International (5/2015)
A critical analysis of mechanical processes in waste treatment plants hints at vulnerablespots in the interaction of plant units and deployed heterogeneous materials. The Simulation of mechanical processes in waste treatment may depict the total material flow in a plant and as such, contribute to a better understanding of the behaviour in heterogeneous materials, to identify bottlenecks, to check plant modifications and hence, to Support planning and reducing time for implementation period.
Development of a rotating fermentation reactor for Biogas production from organic waste
© Wasteconsult International (5/2015)
To maximize biogas yields, adequate substrate mixing during anaerobic digestion (AD) is of particular importance. In dry AD this may be hampered by high solid matter Contents causing a pronounced wear of mixing tools and triggering costly maintenance interruptions. This study aims at the development of a rotating drum fermenter (RDF) to overcome these problems. As a first step towards the development of a full-scale RDF for dry AD of biowaste, particular attention was given to the mixing performance. Therefore, a lab-scale RDF was constructed from acrylic glass to allow visual inspection of the radial mixing process.
© Wasteconsult International (5/2015)
To maximize biogas yields, adequate substrate mixing during anaerobic digestion (AD) is of particular importance. In dry AD this may be hampered by high solid matter Contents causing a pronounced wear of mixing tools and triggering costly maintenance interruptions. This study aims at the development of a rotating drum fermenter (RDF) to overcome these problems. As a first step towards the development of a full-scale RDF for dry AD of biowaste, particular attention was given to the mixing performance. Therefore, a lab-scale RDF was constructed from acrylic glass to allow visual inspection of the radial mixing process.
The APECS-biomass model
© Wasteconsult International (5/2015)
Organic wastes in all their different shapes and compositions have gained significant commercial, political and academic interest during the last decade. The main driver for this development is the widely accepted consideration of organic wastes as valuable resources rather than problematic or worthless stuff. With the aim to turn the economy from its fossil basis into a bio-economy with presumably higher resource efficiency and less negative or even positive climate impact, governments in many countries have startedto support the use of waste biomass in many ways including subsidies.
© Wasteconsult International (5/2015)
Organic wastes in all their different shapes and compositions have gained significant commercial, political and academic interest during the last decade. The main driver for this development is the widely accepted consideration of organic wastes as valuable resources rather than problematic or worthless stuff. With the aim to turn the economy from its fossil basis into a bio-economy with presumably higher resource efficiency and less negative or even positive climate impact, governments in many countries have startedto support the use of waste biomass in many ways including subsidies.
