Dynamic model validation and advanced polymer control for rotating belt filtration as primary treatment of domestic wastewaters

Boiocchi, Riccardo; Behera, Chitta Ranjan; Sherratt, Anthony; DeGroot, Christopher T.; Gernaey, Krist V.; Sin, Gürkan; Santoro, Domenico

doi:10.1016/j.ces.2020.115510

Cited by 8 publications

(2 citation statements)

References 19 publications

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“…It is important to point out that this is an intrinsic problem related to the calibration of full-scale models as the monitoring is usually carried out with the main aim of verifying compliance with regulation in force (Regional Council of Veneto 2009). Conversely, given its high demand in terms of costs and staff to be involved, long-term detailed monitoring for modelling purposes is opted more sparingly and restricted to few treatment units and short time periods (Liwarska-Bizukojc et al 2011;Boiocchi et al 2020). Furthermore, emerging issues such as N 2 O emissions are not always the top priority.…”

Section: Novelties and Limitations Of The Workmentioning

confidence: 99%

Evaluating the potential impact of energy-efficient ammonia control on the carbon footprint of a full-scale wastewater treatment plant

Boiocchi

Bertanza

2022

Water Science and Technology

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An assessment was performed for elucidating the possible impact of different aeration strategies on the carbon footprint of a full-scale wastewater treatment plant. Using a calibrated model, the impact of different aeration strategies was simulated. The ammonia controller tested showed its ability in ensuring effluent ammonia concentrations compliant with regulation along with significant savings on aeration energy, compared to fixed oxygen set point (DOsp) control strategies. At the same time, nitrous oxide emissions increased due to accumulation of nitrification intermediates. Nevertheless, when coupled with the carbon dioxide emissions due to electrical energy consumption for aeration, the overall carbon footprint was only marginally affected. Using the local average CO2 emission factor, ammonia control slightly reduced the carbon footprint with respect to the scenario where DOsp was fixed at 2 mg·L−1. Conversely, no significant change could be detected when compared against the scenarios where the DOsp was fixed. Overall, the actual impact of ammonia control on the carbon footprint compared to other aeration strategies was found to be strictly connected to the sources of energy employed, where the larger amount of low CO2-emitting energy is, the higher the relative increase in the carbon footprint will be.

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Section: Novelties and Limitations Of The Workmentioning

confidence: 99%

Evaluating the potential impact of energy-efficient ammonia control on the carbon footprint of a full-scale wastewater treatment plant

Boiocchi

Bertanza

2022

Water Science and Technology

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“…The fundamental working principle of these technologies is based on physical and/or biological processes. Specifically, while some PTTs typically remove suspended solids only through physical processes such as settling [13] or filtration [14][15][16][17], other PTTs such as septic and Imhoff tanks incorporate an additional removal mechanism, namely anaerobic digestion [18,19]. The latter occurs consequently to the fact that, differently from primary clarifiers or rotating filters where separated solids are continuously removed, within septic and Imhoff tanks the solids are allowed to accumulate in the system over long periods.…”

Section: Introductionmentioning

confidence: 99%

Carbon Footprint and Energy Recovery Potential of Primary Wastewater Treatment in Decentralized Areas: A Critical Review on Septic and Imhoff Tanks

Boiocchi,

Mainardis,

Rada

et al. 2023

Energies

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The present work is a critical review on the carbon footprint and energy recovery potential of septic and Imhoff tanks for primary wastewater treatment. From an online search of research papers, a lack of up-to-date research about gas emissions from Imhoff tanks emerged. Additionally, available literature data should be extended to incorporate the effect of seasonal variations, which may be relevant due to the fact that both systems work under environmental conditions. The literature generally agrees on the positive effect of temperature increase on biogas and methane production from both septic and Imhoff tanks. Additionally, sludge withdrawal is an important operational feature for gas production in these reactors. More recently, the application of electrochemical technologies and the installation of photovoltaic modules have been studied to enhance the sustainability of these decentralized solutions; in addition, sludge pretreatment has been investigated to raise the obtainable methane yields due to limited sludge biodegradability. Further research is needed to assess the effective sustainability of biogas collection and valorization from existing septic and Imhoff tanks, considering the limited biogas generation and the implementation of these systems in decentralized wastewater treatment scenarios (rural or mountain areas). Contrary to the intensive research on greenhouse gas mitigation strategies applied to centralized systems, solutions specifically designed for gas emission mitigations from septic and Imhoff tanks have not attracted the same scientific interest up to now. More generally, given the widespread application of these two options and their potential significant contribution to the overall carbon footprint of wastewater treatment technologies, much more research must be performed in the future both on the quantification of gas production and on the applicable strategies to reduce their carbon footprint.

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A process synthesis tool for WWTP – An application to design sustainable energy recovery facilities

Behera

Gernaey

et al. 2020

Chemical Engineering Research and Design

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Dynamic model validation and advanced polymer control for rotating belt filtration as primary treatment of domestic wastewaters

Cited by 8 publications

References 19 publications

Evaluating the potential impact of energy-efficient ammonia control on the carbon footprint of a full-scale wastewater treatment plant

Evaluating the potential impact of energy-efficient ammonia control on the carbon footprint of a full-scale wastewater treatment plant

Carbon Footprint and Energy Recovery Potential of Primary Wastewater Treatment in Decentralized Areas: A Critical Review on Septic and Imhoff Tanks

A process synthesis tool for WWTP – An application to design sustainable energy recovery facilities

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