A plant-wide wastewater treatment plant model for carbon and energy footprint: Model application and scenario analysis

Alida Cosenza, Giorgio Mannina, Giorgio Mannina, Kartik Chandran

Risultato della ricerca: Article

3 Citazioni (Scopus)

Abstract

A new model for accounting carbon and energy footprint of wastewater treatment plants (WWTPs) is proposed. The model quantifies direct and indirect greenhouse gas (GHG) emissions related to biological and physical processes of a WWTP. The model takes into account several innovative aspects with respect to already available literature models: i. kinetic/mass-balances; ii. nitrification as a two-step process; iii. nitrous oxide (N 2 O) formation during nitrification and denitrification both in dissolved and off-gas forms. A full-scale application has been performed by adopting the case study of a real WWTP. A scenario analysis was performed to quantify the influence of: composition of inflow wastewater (scenario 1), operating conditions (scenario 2), and oxygen transfer efficiency (scenario 3). Results have underlined the key role of the ratio between influent biodegradable carbon and nitrogen concentration on influencing direct and indirect GHG emissions. Direct GHG emissions increase from 0.49 to 0.63 kgCO 2 eq m −3 with the decrease of the influent ratio of the readily biodegradable carbon and organic and ammonia nitrogen. The increase of the influent organic and ammonia nitrogen favours the daily production of active ammonia oxidization biomass. The simultaneous variation of the investigated factors has amplified direct and indirect GHG emissions to a maximum value of 0.94 and 0.24 kgCO 2eq m −3 , respectively.
Lingua originaleEnglish
pagine (da-a)244-256
Numero di pagine13
RivistaJOURNAL OF CLEANER PRODUCTION
Volume217
Stato di pubblicazionePublished - 2019

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Gas emissions
Greenhouse gases
footprint
Wastewater treatment
greenhouse gas
Ammonia
Carbon
Nitrification
ammonia
carbon
Nitrogen
energy
nitrification
nitrogen
Denitrification
nitrous oxide
biological processes
denitrification
mass balance
Biomass

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Strategy and Management
  • Industrial and Manufacturing Engineering

Cita questo

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title = "A plant-wide wastewater treatment plant model for carbon and energy footprint: Model application and scenario analysis",
abstract = "A new model for accounting carbon and energy footprint of wastewater treatment plants (WWTPs) is proposed. The model quantifies direct and indirect greenhouse gas (GHG) emissions related to biological and physical processes of a WWTP. The model takes into account several innovative aspects with respect to already available literature models: i. kinetic/mass-balances; ii. nitrification as a two-step process; iii. nitrous oxide (N 2 O) formation during nitrification and denitrification both in dissolved and off-gas forms. A full-scale application has been performed by adopting the case study of a real WWTP. A scenario analysis was performed to quantify the influence of: composition of inflow wastewater (scenario 1), operating conditions (scenario 2), and oxygen transfer efficiency (scenario 3). Results have underlined the key role of the ratio between influent biodegradable carbon and nitrogen concentration on influencing direct and indirect GHG emissions. Direct GHG emissions increase from 0.49 to 0.63 kgCO 2 eq m −3 with the decrease of the influent ratio of the readily biodegradable carbon and organic and ammonia nitrogen. The increase of the influent organic and ammonia nitrogen favours the daily production of active ammonia oxidization biomass. The simultaneous variation of the investigated factors has amplified direct and indirect GHG emissions to a maximum value of 0.94 and 0.24 kgCO 2eq m −3 , respectively.",
keywords = "Energy consumption, GHG, Plant-wide model, Simplified model, Wastewater treatment",
author = "Alida Cosenza and Giorgio Mannina and Giorgio Mannina and Kartik Chandran",
year = "2019",
language = "English",
volume = "217",
pages = "244--256",
journal = "JOURNAL OF CLEANER PRODUCTION",
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TY - JOUR

T1 - A plant-wide wastewater treatment plant model for carbon and energy footprint: Model application and scenario analysis

AU - Cosenza, Alida

AU - Mannina, Giorgio

AU - Mannina, Giorgio

AU - Chandran, Kartik

PY - 2019

Y1 - 2019

N2 - A new model for accounting carbon and energy footprint of wastewater treatment plants (WWTPs) is proposed. The model quantifies direct and indirect greenhouse gas (GHG) emissions related to biological and physical processes of a WWTP. The model takes into account several innovative aspects with respect to already available literature models: i. kinetic/mass-balances; ii. nitrification as a two-step process; iii. nitrous oxide (N 2 O) formation during nitrification and denitrification both in dissolved and off-gas forms. A full-scale application has been performed by adopting the case study of a real WWTP. A scenario analysis was performed to quantify the influence of: composition of inflow wastewater (scenario 1), operating conditions (scenario 2), and oxygen transfer efficiency (scenario 3). Results have underlined the key role of the ratio between influent biodegradable carbon and nitrogen concentration on influencing direct and indirect GHG emissions. Direct GHG emissions increase from 0.49 to 0.63 kgCO 2 eq m −3 with the decrease of the influent ratio of the readily biodegradable carbon and organic and ammonia nitrogen. The increase of the influent organic and ammonia nitrogen favours the daily production of active ammonia oxidization biomass. The simultaneous variation of the investigated factors has amplified direct and indirect GHG emissions to a maximum value of 0.94 and 0.24 kgCO 2eq m −3 , respectively.

AB - A new model for accounting carbon and energy footprint of wastewater treatment plants (WWTPs) is proposed. The model quantifies direct and indirect greenhouse gas (GHG) emissions related to biological and physical processes of a WWTP. The model takes into account several innovative aspects with respect to already available literature models: i. kinetic/mass-balances; ii. nitrification as a two-step process; iii. nitrous oxide (N 2 O) formation during nitrification and denitrification both in dissolved and off-gas forms. A full-scale application has been performed by adopting the case study of a real WWTP. A scenario analysis was performed to quantify the influence of: composition of inflow wastewater (scenario 1), operating conditions (scenario 2), and oxygen transfer efficiency (scenario 3). Results have underlined the key role of the ratio between influent biodegradable carbon and nitrogen concentration on influencing direct and indirect GHG emissions. Direct GHG emissions increase from 0.49 to 0.63 kgCO 2 eq m −3 with the decrease of the influent ratio of the readily biodegradable carbon and organic and ammonia nitrogen. The increase of the influent organic and ammonia nitrogen favours the daily production of active ammonia oxidization biomass. The simultaneous variation of the investigated factors has amplified direct and indirect GHG emissions to a maximum value of 0.94 and 0.24 kgCO 2eq m −3 , respectively.

KW - Energy consumption

KW - GHG

KW - Plant-wide model

KW - Simplified model

KW - Wastewater treatment

UR - http://hdl.handle.net/10447/367166

UR - https://www.journals.elsevier.com/journal-of-cleaner-production

M3 - Article

VL - 217

SP - 244

EP - 256

JO - JOURNAL OF CLEANER PRODUCTION

JF - JOURNAL OF CLEANER PRODUCTION

SN - 0959-6526

ER -