Evaluation of new alternatives in wastewater treatment plants based on dynamic modelling and life cycle assessment (DM-LCA)

Faria, Ana Barbara Bisinella de; Spérandio, Mathieu; Ahmadi, Aras; Tiruta-Barna, Ligia

doi:10.1016/j.watres.2015.06.048

Cited by 106 publications

(43 citation statements)

References 24 publications

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“…-With the development of urban agriculture projects, the additional amount of waste also needs to be considered [92]. -Finally, to increase the sustainability of projects with a long-term vision, a multi-criteria and systemic study such as LCA method seems pertinent during the pre-study stage [88,[93][94][95][96].…”

Section: Discussionmentioning

confidence: 99%

Anaerobic digestion and integration at urban scale: feedback and comparative case study

Angeli

Morales

Lefloc’h³

et al. 2018

Energ Sustain Soc

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Background: The anaerobic digestion process is well studied and developed since the last 50 years, notably for farming implementation. Furthermore, the international energy agenda has shifted in favor of renewable resources. In this context, anaerobic digestion has been highlighted as a valuable source of green energy. At urban scale, since the 2000s, some eco-friendly districts and cities tried to integrate this process as valorization treatment, with different approaches and results. The objective of this study is to provide a feedback from these anaerobic digestion projects at urban scale. Methods: To construct this paper, 15 international projects of urban waste valorization were selected and studied. Three of these projects are developed to describe the different elements and processes implied in these valorization systems. Thus, in situ and ex situ anaerobic digestions are described with functional implementation and units in development or abandoned. Once the leading steps and main parameters on waste management system identified, the discussion is performed to compare the operational systems implemented in the 15 cases studies. The analysis takes processes and biological parameters into account in addition to social, financial, and ecological elements available. The achievements and limits of case studied linked to their context, bringing advice and recommendations. Results: From these real cases and projects, we highlighted relevant information for further urban waste valorization system. Among others, the most frequent organic deposits produced at urban scale are identified, as well as the typical quantities generated. Collection, storage, and pretreatment processes were investigated to provide information about how they are conducted in situ and ex situ. Concerning some technical points, CSTR and UASB configurations are also identified as predominant reactors used to lead wet AD process at urban scale, due to practical aspects and characteristics of feedstock. Concerning the digestate, nutrients contents make it an interesting fertilizer for agricultural valorization. To its stabilization, the composting process is mainly deployed after anaerobic digestion of urban waste. The valorization of biogas produced with in situ urban AD is generally performed with CHP unit, due to the small quantity of methane. When the valorization is operated ex situ, processes are in link with local users' needs and energy transition policy.

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Section: Discussionmentioning

confidence: 99%

Anaerobic digestion and integration at urban scale: feedback and comparative case study

Angeli

Morales

Lefloc’h³

et al. 2018

Energ Sustain Soc

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“…Models are also used within benchmark simulation models to objectively evaluate the performance of control strategies by simulation at the level of the activated sludge unit (BSM1) or at the plant-wide level (BSM2) [8]. Dynamic Modelling is coupled with Life Cycle Assessment (DM-LCA) to evaluate new alternatives in wastewater treatment plants for energy efficient operation, indicating the importance of dynamic modelling versus steady-state approach [9]. Models for predicting the fate of micro-pollutants in WWTP have been developed to evaluate their removal [10] and impact on the receiving waters [11].…”

Section: Introductionmentioning

confidence: 99%

The Use of Dynamic Mathematical Models for Improving the Designs of Upgraded Wastewater Treatment Plants

Hvala¹,

Vrečko²,

Levstek³

et al. 2017

J. sustain. dev. energy water environ. syst.

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Mathematical models and simulation are becoming increasingly used tools in the optimization of wastewater treatment plants. In this paper, the use of these tools is presented for wastewater treatment plant upgrading. Two case studies are presented, which will be upgraded for tertiary treatment to achieve effluent total nitrogen and total phosphorous concentrations below 10 mg/l and 1 mg/l, respectively. The plant performance after upgrading was assessed by first designing the process model, before upgrading the model for future operation under dynamic influent conditions. Long-term simulations revealed some bottlenecks in the upgraded plant performance and thus helped to improve the plant designs. In one case the total volume of the reactors was increased subsequently, while in the other case tighter denitrification control or additional reject water treatment was proposed. These results indicate that mathematical models can be considered as valuable tools to complement the established wastewater treatment plant design procedures. Advantages are gained by simulating the operation under dynamic operating conditions, precise wastewater characterization, as well as adjustment of stoichiometric and kinetic parameters to a particular wastewater treatment plant operation.

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“…Indeed, detailed dynamic mechanistic models are recommended to better account for the strong non-linearity and interconnections among the different WWTP treatment units . Bisinella de Faria et al (2015) have recently attempt to combine dynamic WWTP modelling (BSM2 and the BioWin Activated Sludge/Anaerobic Digestion models) with Life Cycle Assessment to compare five wastewater treatment plant (WWTP) scenarios. However, the model of Bisinella de Faria et al (2015) has the limit of quantifying GHG by adopting emission factors which have the limit of neglecting the variability of GHG.…”

Section: Dynamic Mechanistic Modelsmentioning

confidence: 99%

“…Bisinella de Faria et al (2015) have recently attempt to combine dynamic WWTP modelling (BSM2 and the BioWin Activated Sludge/Anaerobic Digestion models) with Life Cycle Assessment to compare five wastewater treatment plant (WWTP) scenarios. However, the model of Bisinella de Faria et al (2015) has the limit of quantifying GHG by adopting emission factors which have the limit of neglecting the variability of GHG. The literature review presented above shows that despite the huge efforts to include GHG at a plant-wide scale, the studies performed thus far have taken place only at the research level and are often applied to hypothetic case studies (with exception of Ni et al (2013b), Guo (2014) and Lim and Kim (2014)), yet not currently within the realm of practitioners or WWTP operators.…”

Section: Dynamic Mechanistic Modelsmentioning

confidence: 99%

Greenhouse gases from wastewater treatment — A review of modelling tools

Mannina

Ekama

Caniani

et al. 2016

Science of The Total Environment

166

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Evaluation of new alternatives in wastewater treatment plants based on dynamic modelling and life cycle assessment (DM-LCA)

Cited by 106 publications

References 24 publications

Anaerobic digestion and integration at urban scale: feedback and comparative case study

Anaerobic digestion and integration at urban scale: feedback and comparative case study

The Use of Dynamic Mathematical Models for Improving the Designs of Upgraded Wastewater Treatment Plants

Greenhouse gases from wastewater treatment — A review of modelling tools

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