sewage sludge energy Articles
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Sludge digestion instead of aerobic stabilisation – a cost benefit analysis based on experiences in Germany
As a consequence of a worldwide increase of energy costs, the efficient use of sewage sludge as a renewable energy resource must be considered, even for smaller wastewater treatment plants (WWTPs) with design capacities between 10,000 and 50,000 population equivalent (PE). To find the lower limit for an economical conversion of an aerobic stabilisation plant into an anaerobic stabilisation ...
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Conversion of sewage sludge to commodity chemicals via syngas fermentation
Gasification of sewage sludge allows the recovery of energy, and produces a mix of CO, CO2 and H2 called synthesis gas (or syngas), which can be fermented by acetogenic bacteria to added-value products. This work presents the conversion of syngas to organic acids and alcohols using both pure and mixed cultures. Pure culture kinetic experiments with Clostridium carboxidivorans P7 resulted in the ...
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Sewage sludge treatment: evaluation of the energy potential and methane emissions with COD balancing
Sewage sludge is an important resource for the generation of electricity and heat within a wastewater treatment plant (WWTP). Taking a holistic approach to such use involves considering the greenhouse gas emissions. In particular, for anaerobic sludge treatment, methane emissions are a matter of concern. Therefore, the utilization of a carbon balance, based on the chemical oxygen demand ...
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What Is the Sludge Treatment Process?
Raw, untreated sewage is a serious hazard to the environment as well as to the nearby population. However, through proper treatment, wastewater facilities can keep up with demand, reduce pathogenic risks, and reintroduce clean water back into the environment. Learn more about the role of sludge treatment in improving wastewater processing. Sewage Sludge When municipal wastewater treatment ...
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Optimization of municipal sludge and grease co-digestion using disintegration technologies
Many drivers tend to foster the development of renewable energy production in wastewater treatment plants as many expectations rely upon energy recovery from sewage sludge, for example through biogas use. This paper is focused on the assessment of grease waste (GW) as an adequate substrate for co-digestion with municipal sludge, as it has a methane potential of 479–710 LCH4/kg VS, as well as the ...
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Project case study: pyrobustor for KSV GmbH
Preventing transport of sewage sludge over long distances and avoiding incalculable costs by outsourcing sludge disposal were the objectives of this project. Under the leadership of the public utility Stadtwerke Crailsheim GmbH, 27 municipalities in southern Germany set up a special-purpose association, KSV GmbH. This special-purpose association disposes of the regional sewage sludge in a ...
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How do Wastewater Treatment Plants Transform in the Era of Carbon Neutrality?
In November 2019, the Danish government signed a "Danish climate partnership" with 13 business representatives, which basically covers the greenhouse gas emissions of all industries in Denmark. The members of the Climate Partnership need to provide emission reduction recommendations in their respective fields to help the Danish government realize its 2030 commitment-that is, Denmark’s ...
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