Analysis of Sewage Sludge Thermal Treatment Methods in the Context of Circular Economy

Tsybina, Anna; Wuensch, Christoph

doi:10.31025/2611-4135/2018.13668

Cited by 33 publications

(38 citation statements)

References 27 publications

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“…Despite the successful application of a series of technologies for use in phosphorus recovery, the legislative focus across the EU member states varies considerably (Abis, Calmano, & Kuchta, 2018;Tsybina & Wuensch, 2018;van Dijk, 2017). The performing of additional research in the field of nutrient recovery from sewage sludge and evaluation of potential related legislation will contribute towards setting clear goals and indicating a pathway towards the establishing of an EU-wide Directive.…”

Section: Discussionmentioning

confidence: 99%

Effects of the Different Implementation of Legislation Relating to Sewage Sludge Disposal in the Eu

et al. 2020

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The European Directive 86/278/EEC implemented in 1986 was a means adopted by the European Union to improve use of the valuables in sewage sludge by applying treated sludge on agricultural soils. To prevent an accumulation of pollutants, the Directive provided suggestions limiting concentrations of toxic elements in sewage sludge and agricultural soil. The Directive was implemented diversely throughout EU member states, with current national legislations only partly reflecting the initial intentions of the EU Directive from 30 years ago. This study demonstrates how the European Directive was implemented in three countries currently at different stages of replacing the agricultural application of sewage sludge with incineration (Netherlands, Germany and Sweden). Additionally, recent changes in the legislation with regards to the re-use and final disposal of sewage sludge in the three chosen member states are analysed. The aim was to investigate how each member state has solved the conflict between improvement of nutrient recovery from sludge and limitation of pollutants in agricultural soil. Based on this review, limit values are not necessarily reflected in application rates of sewage sludge in agriculture. Following changes in current legislation, phosphorus recovery will become a priority task. The recovery of other valuables from sewage sludge is currently not regulated in the legislation of the three member states investigated.

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Section: Discussionmentioning

confidence: 99%

Effects of the Different Implementation of Legislation Relating to Sewage Sludge Disposal in the Eu

et al. 2020

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“…In addition to the recovery of heat from combustion, the benefit due to further energy recovery treatments from the products of pyrolysis (i.e., pyrolytic oil, biochar, and non-condensable gases) and from the gas produced from gasification were evaluated [7]. Other thermal treatments such as incineration, pyrolysis, and gasification were discussed in [13,14]. An overview of the SS thermal treatments in terms of sustainability was provided in [14].…”

Section: Literature Review On Sludge-to-energy (Ste) Processesmentioning

confidence: 99%

Scenario Analysis for Selecting Sewage Sludge-to-Energy/Matter Recovery Processes

2021

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The sewage sludges are the byproducts of the wastewater treatment. The new perspective of the wastewater value chain points to a sustainable circular economy approach, where the residual solid material produced by sewage sludge treatments is a resource rather than a waste. A sewage sludge treatment system consists of five main phases; each of them can be performed by different alternative processes. Each process is characterized by its capability to recover energy and/or matter. In this paper, a state of the art of the sludge-to-energy and sludge-to-matter treatments is provided. Then, a scenario analysis is developed to identify suitable sewage sludge treatments plants that best fit the quality and flowrate of sewage sludge to be processed while meeting technological and economic constraints. Based on the scientific literature findings and experts’ opinions, the authors identify a set of reference initial scenarios and the corresponding best treatments’ selection for configuring sewage sludge treatment plants. The scenario analysis reveals a useful reference technical framework when circular economy goals are pursued. The results achieved in all scenarios ensure the potential recovery of matter and/or energy from sewage sludges processes.

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“…Otherwise stated, the contemporary level of technological development demonstrates that resources cannot be used an unlimited number of times. Research in science and technology aimed at the extension of the resource life cycle remains an urgent challenge [14][15][16].…”

Section: Circular Approach In the Global Economymentioning

confidence: 99%

Implementation of Circular Economy Principles in Regional Solid Municipal Waste Management: The Case of Sverdlovskaya Oblast (Russian Federation)

et al. 2019

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The circular economy entails the principles of rational waste management to the best advantage. Waste management in the Russian Federation is currently in a reform process, thus it is crucial to choose now the most efficient way for its development. Besides, in addition to general government strategic aims in such a vast country such as Russia, it is very important to take into consideration specific aspects typical of its territories, which will allow determining regional areas of activities. The article analyzes current municipal solid waste management in the Russian Federation. The case study is of one of the regions (Sverdlovskaya Oblast) characterized by some typical and specific problems which illustrate the results of the first stage of reforming. The authors analyzed the existing and planned mechanisms of state regulation in the waste management sector at regional and federal levels, and scrutinized changes in legislation. The development level of the circular economy in the region was determined on the basis of the index method. The life cycle analysis (LCA)-based evaluation approach made it possible to evaluate the economic efficiency of the production and economic activities at different stages of municipal solid waste (waste paper) recycling with due regard to externalities. The research showed that despite the current substantial economic potential of the secondary resources’ (waste paper) reuse, there was a low level of development of the circular economy index. Regional factors hindering and fostering the circular economy development were identified. Recommendations for improving the quality of governance of the municipal solid waste management were formulated.

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Analysis of Sewage Sludge Thermal Treatment Methods in the Context of Circular Economy

Cited by 33 publications

References 27 publications

Effects of the Different Implementation of Legislation Relating to Sewage Sludge Disposal in the Eu

Effects of the Different Implementation of Legislation Relating to Sewage Sludge Disposal in the Eu

Scenario Analysis for Selecting Sewage Sludge-to-Energy/Matter Recovery Processes

Implementation of Circular Economy Principles in Regional Solid Municipal Waste Management: The Case of Sverdlovskaya Oblast (Russian Federation)

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