Study on the Quantitative Evaluation of Greenhouse Gas (GHG) Emissions in Sewage-Sludge Treatment System

Liang, Zhiyi; Matsumoto, Toru; Zhang, Lei; Liu, Bing

doi:10.1007/978-981-15-6775-9_18

Cited by 3 publications

(1 citation statement)

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“…Similarly, the CO 2 , N 2 O, and CH 4 emissions from WWTPs account for 4%, 3%, and 5% of total emissions, respectively. The relevance of the environmental impact due to SS treatment is related to substance emitted and electricity consumption; in particular, the N 2 O and the energy consumption are individuated as the primary sources of GHG emissions [46].…”

Section: Economic and Environmental Background Of Sstsmentioning

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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Section: Economic and Environmental Background Of Sstsmentioning

confidence: 99%