scholarly journals What sewage sludge is and conflicts in Swedish circular economy policymaking

2022 ◽  
pp. 1-10
Author(s):  
Linus Ekman Burgman
Keyword(s):  
Sewage Sludge ◽  
Circular Economy

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

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 276
Author(s):  
Francesco Facchini ◽  
Giovanni Mummolo ◽  
Micaela Vitti
Keyword(s):  
Sewage Sludge ◽  
Scenario Analysis ◽  
Value Chain ◽  
Circular Economy ◽  
Solid Material ◽  
Sludge Treatment ◽  
Sewage Sludges ◽  
Recovery Processes ◽  
Sewage Sludge Treatment ◽  
New Perspective

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.

Sustainable use of sewage sludge in acid soils within a circular economy perspective

CATENA ◽  
2017 ◽  
Vol 149 ◽  
pp. 341-348 ◽  
Author(s):  
Rosa Mosquera-Losada ◽  
Alberto Amador-García ◽  
Nieves Muñóz-Ferreiro ◽  
José Javier Santiago-Freijanes ◽  
Nuria Ferreiro-Domínguez ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Circular Economy ◽  
Sustainable Use ◽  
Acid Soils

scholarly journals Biochar production from sewage sludge and microalgae mixtures: properties, sustainability and possible role in circular economy

2019 ◽  
Author(s):  
Silvia Bolognesi ◽  
Giorgia Bernardi ◽  
Arianna Callegari ◽  
Daniele Dondi ◽  
Andrea G. Capodaglio
Keyword(s):  
Sewage Sludge ◽  
Circular Economy

scholarly journals Optimisation of the co-combustion of meat–bone meal and sewage sludge in terms of the quality produced ashes used as substitute of phosphorites

2020 ◽  
Author(s):  
Zygmunt Kowalski ◽  
Marcin Banach ◽  
Agnieszka Makara
Keyword(s):  
Sewage Sludge ◽  
Circular Economy ◽  
Combustion Process ◽  
Raw Material ◽  
Cadmium Content ◽  
Bone Meal ◽  
High Quality ◽  
Fluorine Compounds ◽  
Production Complex ◽  
Meat Bone Meal

Abstract To obtain a high-quality phosphorus raw material comparable in quality to the best phosphorites used in the fertiliser industry, an analysis was carried out to determine the optimal mass proportions of a meat–bone meal and sewage sludge mixture to be used in a co-combustion process. The ashes obtained contained hydroxyapatite that could be considered a high-quality substitute for phosphorites, with an average P2O5 content of 33.5%. These ashes do not contain fluorine compounds, cadmium content is at trace levels and they do not contain the radioactive compounds that are present in trace amounts in all phosphates. The developed process is an example of a production complex using cleaner technologies and circular economy principles on a microeconomic scale.

scholarly journals The Water‑wastewater‑sludge Sector and the Circular Economy

2018 ◽  
Vol 21 (4) ◽  
pp. 121-137 ◽  
Author(s):  
Danuta Lipińska
Keyword(s):  
Sewage Sludge ◽  
Circular Economy ◽  
Descriptive Analysis ◽  
National Level ◽  
Wastewater Sludge ◽  
Analysis And Evaluation ◽  
Central Statistical ◽  
Central Statistical Office ◽  
Development Goals ◽  
The Subject

The objective of this paper is a theoretical and empirical analysis and evaluation of the role, importance and opportunities of the water‑sewage‑sludge industry in the implementation of the circular economy. To realize this objective, a review of both the literature and the EU strategic documents concerning the subject of the study was conducted. The applied research method is a descriptive analysis based on available statistical data (Eurostat, EEA, EIO and the Polish Central Statistical Office) as well as on source materials. The theoretical part of the work presents the essence of the circular economy and the general characteristics of the analyzed sector, with a particular focus on the potential for the recovery of water from sewage and the reuse of wastewater, as well as the recovery of phosphorus from the wastewater treatment, processing and disposal of sewage sludge. The results of the study show that: (1) there are significant links between the development goals of the water‑sewage‑sludge sector and the circular economy. (2) it is necessary to seek and implement new solutions and technologies leading to the increased recovery of energy and biogens from sewage sludge. (3) there are still many barriers to the recycling of rainwater and graywater as well as to the reuse of wastewater. (4) the circular economy creates new opportunities for water‑sewage and sludge management at the local and national level.

scholarly journals Directions and Challenges in the Management of Municipal Sewage Sludge in Poland in the Context of the Circular Economy

2020 ◽  
Vol 12 (9) ◽  
pp. 3686 ◽  
Author(s):  
Ksymena Rosiek
Keyword(s):  
European Union ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Circular Economy ◽  
Tap Water ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Sludge Management ◽  
Sludge Disposal ◽  
Sewage Sludge Management

Landfilling was the main method of sewage sludge disposal in Poland for decades. After Poland’s accession to the European Union (EU), many investments have been made into providing better access to tap water as well as to collect and treat municipal sewage. However, sewage sludge treatment has not been treated as an integral part of the implementation of wastewater management obligations. Stricter European Union regulations regarding the management of municipal sewage sludge (MSS) pose new challenges for Poland. The aim of this study was to analyze changes in the direction of the final management of municipal sewage sludge in Poland based on the analysis of strategic documents, regulations, literature, and available statistical data. The aim of the analysis was to search for directions to modify how sewage sludge is managed, given the approach promoted by the circular economy concept. The results prove that investments in wastewater treatment plants according to the EU sewage directive are not applied to the development of infrastructure that would enable the disposal of sewage sludge, which, for many years, has been stored (landfilling) or used directly in agriculture and ground reclamation. The introduction of stricter regulations in the area of sewage sludge usage and better wastewater treatment have increased the level of difficulties concerning sewage sludge management. Poland faces the challenge of defining sewage sludge management directions. The circular economy concept offers an approach that can be the basis for the creation of a new sewage sludge management strategy for Poland. The concept allows the combined goals of sewage sludge disposal and of energy and nutrients recovery to be achieved.

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