Reactivation potential of denitrifying bioelectrochemical systems at low temperatures after prolonged no flow conditions

Francesco Savio; Borja Valverde Pérez

Reactivation potential of denitrifying bioelectrochemical systems at low temperatures after prolonged no flow conditions

Francesco Savio^*
, Borja Valverde Pérez^*

^*Corresponding author for this work

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

Abstract

This study investigates the potential of denitrifying bioelectrochemical systems (d-BES) as tertiary polishing step of wastewater treatment plant effluents. The performance of reactors under seasonal conditions, particularly focusing on the effects of prolonged shut-down periods simulating summer months, was assessed. Reactors were evaluated for their ability to reactivate after periods of no flow, assessing changes in nitrogen removal and biofilm dynamics. Results showed that after shut-down, biofilm performance was initially hindered by high dissolved oxygen concentrations, but both reactors regained denitrification potential comparable to pre-shut down periods, reaching NO₃ removal efficiency above 80%

Original language	English
Publication date	2025
Number of pages	4
Publication status	Published - 2025
Event	7th IWA International Conference on Ecotechnologies for Wastewater Treatment - Stockholm, Sweden Duration: 23 Jun 2025 → 26 Jun 2025

Conference

Conference	7th IWA International Conference on Ecotechnologies for Wastewater Treatment
Country/Territory	Sweden
City	Stockholm
Period	23/06/2025 → 26/06/2025

Keywords

Bioelectrochemical reactors
Cold climate
Reactor reactivation

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title = "Reactivation potential of denitrifying bioelectrochemical systems at low temperatures after prolonged no flow conditions",

abstract = "This study investigates the potential of denitrifying bioelectrochemical systems (d-BES) as tertiary polishing step of wastewater treatment plant effluents. The performance of reactors under seasonal conditions, particularly focusing on the effects of prolonged shut-down periods simulating summer months, was assessed. Reactors were evaluated for their ability to reactivate after periods of no flow, assessing changes in nitrogen removal and biofilm dynamics. Results showed that after shut-down, biofilm performance was initially hindered by high dissolved oxygen concentrations, but both reactors regained denitrification potential comparable to pre-shut down periods, reaching NO3 removal efficiency above 80\%",

keywords = "Bioelectrochemical reactors, Cold climate, Reactor reactivation",

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note = "7th IWA International Conference on Ecotechnologies for Wastewater Treatment, ecoSTP2025 ; Conference date: 23-06-2025 Through 26-06-2025",

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Reactivation potential of denitrifying bioelectrochemical systems at low temperatures after prolonged no flow conditions. / Savio, Francesco ; Valverde Pérez, Borja.
2025. Abstract from 7th IWA International Conference on Ecotechnologies for Wastewater Treatment, Stockholm, Sweden.

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

TY - ABST

T1 - Reactivation potential of denitrifying bioelectrochemical systems at low temperatures after prolonged no flow conditions

AU - Savio, Francesco

AU - Valverde Pérez, Borja

PY - 2025

Y1 - 2025

N2 - This study investigates the potential of denitrifying bioelectrochemical systems (d-BES) as tertiary polishing step of wastewater treatment plant effluents. The performance of reactors under seasonal conditions, particularly focusing on the effects of prolonged shut-down periods simulating summer months, was assessed. Reactors were evaluated for their ability to reactivate after periods of no flow, assessing changes in nitrogen removal and biofilm dynamics. Results showed that after shut-down, biofilm performance was initially hindered by high dissolved oxygen concentrations, but both reactors regained denitrification potential comparable to pre-shut down periods, reaching NO3 removal efficiency above 80%

AB - This study investigates the potential of denitrifying bioelectrochemical systems (d-BES) as tertiary polishing step of wastewater treatment plant effluents. The performance of reactors under seasonal conditions, particularly focusing on the effects of prolonged shut-down periods simulating summer months, was assessed. Reactors were evaluated for their ability to reactivate after periods of no flow, assessing changes in nitrogen removal and biofilm dynamics. Results showed that after shut-down, biofilm performance was initially hindered by high dissolved oxygen concentrations, but both reactors regained denitrification potential comparable to pre-shut down periods, reaching NO3 removal efficiency above 80%

KW - Bioelectrochemical reactors

KW - Cold climate

KW - Reactor reactivation

M3 - Conference abstract for conference

T2 - 7th IWA International Conference on Ecotechnologies for Wastewater Treatment

Y2 - 23 June 2025 through 26 June 2025

ER -

Reactivation potential of denitrifying bioelectrochemical systems at low temperatures after prolonged no flow conditions

Abstract

Conference

Keywords

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