Energy recovery potential of anaerobic digestion of excess sludge from high-rate activated sludge systems co-treating municipal wastewater and food waste

Huseyin Guven; Mustafa Evren Ersahin; Recep Kaan Dereli; Hale Ozgun; Isa Isik; Izzet Ozturk

doi:10.1016/j.energy.2019.01.150

Energy recovery potential of anaerobic digestion of excess sludge from high-rate activated sludge systems co-treating municipal wastewater and food waste

Huseyin Guven^*
, Mustafa Evren Ersahin
, Recep Kaan Dereli
, Hale Ozgun
, Isa Isik
, Izzet Ozturk

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University
University College Dublin
Ondokuz Mayis University

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

Excess sludge from a pilot-scale high-rate activated sludge (HRAS) system was digested anaerobically under mesophilic conditions. The pilot-scale HRAS system was initially fed with only wastewater and following that, fed with wastewater together with food waste. Impact of food waste inclusion on anaerobic digestion performance was investigated. Thereafter, a feasibility study was carried out using the performance data obtained from the experimental studies. The results showed that digestion of HRAS sludge could be a preferable option unless excellent biomass-liquid separation could be employed and mineralization of influent chemical oxygen demand (COD) could be suppressed. Additionally, co-treatment of wastewater and food waste increased the methane yield and improved the energy balance of the wastewater treatment plants (WWTPs). Thus, WWTPs can have a surplus in the energy budget.

Original language	English
Pages (from-to)	1027-1036
Number of pages	10
Journal	Energy
Volume	172
DOIs	https://doi.org/10.1016/j.energy.2019.01.150
Publication status	Published - 1 Apr 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd

Funding

This study was conducted as part of a SAN-TEZ project ( 0534.STZ.2013-2 ), which was supported by Ministry of Industry and Technology of Turkey, and Istanbul Environment Management Industry and Trade Company (ISTAC) . Appendix A This study was conducted as part of a SAN-TEZ project (0534.STZ.2013-2), which was supported by Ministry of Industry and Technology of Turkey, and Istanbul Environment Management Industry and Trade Company (ISTAC).

Funders	Funder number
ISTAC
Istanbul Environment Management Industry and Trade Company
Ministry of Industry and Technology of Turkey
Bilim, Sanayi ve Teknoloji Bakanliği	0534.STZ.2013-2

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation
SDG 11 Sustainable Cities and Communities

Keywords

Anaerobic digestion
COD balance
Co-treatment
Energy surplus
Food waste
High-rate activated sludge system

Access to Document

10.1016/j.energy.2019.01.150

Cite this

@article{7e8ed3d033284bc0b5185e0d4cf17dd7,

title = "Energy recovery potential of anaerobic digestion of excess sludge from high-rate activated sludge systems co-treating municipal wastewater and food waste",

abstract = "Excess sludge from a pilot-scale high-rate activated sludge (HRAS) system was digested anaerobically under mesophilic conditions. The pilot-scale HRAS system was initially fed with only wastewater and following that, fed with wastewater together with food waste. Impact of food waste inclusion on anaerobic digestion performance was investigated. Thereafter, a feasibility study was carried out using the performance data obtained from the experimental studies. The results showed that digestion of HRAS sludge could be a preferable option unless excellent biomass-liquid separation could be employed and mineralization of influent chemical oxygen demand (COD) could be suppressed. Additionally, co-treatment of wastewater and food waste increased the methane yield and improved the energy balance of the wastewater treatment plants (WWTPs). Thus, WWTPs can have a surplus in the energy budget.",

keywords = "Anaerobic digestion, COD balance, Co-treatment, Energy surplus, Food waste, High-rate activated sludge system",

author = "Huseyin Guven and Ersahin, \{Mustafa Evren\} and Dereli, \{Recep Kaan\} and Hale Ozgun and Isa Isik and Izzet Ozturk",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = apr,

day = "1",

doi = "10.1016/j.energy.2019.01.150",

language = "English",

volume = "172",

pages = "1027--1036",

journal = "Energy",

issn = "0360-5442",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Energy recovery potential of anaerobic digestion of excess sludge from high-rate activated sludge systems co-treating municipal wastewater and food waste

AU - Guven, Huseyin

AU - Ersahin, Mustafa Evren

AU - Dereli, Recep Kaan

AU - Ozgun, Hale

AU - Isik, Isa

AU - Ozturk, Izzet

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Excess sludge from a pilot-scale high-rate activated sludge (HRAS) system was digested anaerobically under mesophilic conditions. The pilot-scale HRAS system was initially fed with only wastewater and following that, fed with wastewater together with food waste. Impact of food waste inclusion on anaerobic digestion performance was investigated. Thereafter, a feasibility study was carried out using the performance data obtained from the experimental studies. The results showed that digestion of HRAS sludge could be a preferable option unless excellent biomass-liquid separation could be employed and mineralization of influent chemical oxygen demand (COD) could be suppressed. Additionally, co-treatment of wastewater and food waste increased the methane yield and improved the energy balance of the wastewater treatment plants (WWTPs). Thus, WWTPs can have a surplus in the energy budget.

AB - Excess sludge from a pilot-scale high-rate activated sludge (HRAS) system was digested anaerobically under mesophilic conditions. The pilot-scale HRAS system was initially fed with only wastewater and following that, fed with wastewater together with food waste. Impact of food waste inclusion on anaerobic digestion performance was investigated. Thereafter, a feasibility study was carried out using the performance data obtained from the experimental studies. The results showed that digestion of HRAS sludge could be a preferable option unless excellent biomass-liquid separation could be employed and mineralization of influent chemical oxygen demand (COD) could be suppressed. Additionally, co-treatment of wastewater and food waste increased the methane yield and improved the energy balance of the wastewater treatment plants (WWTPs). Thus, WWTPs can have a surplus in the energy budget.

KW - Anaerobic digestion

KW - COD balance

KW - Co-treatment

KW - Energy surplus

KW - Food waste

KW - High-rate activated sludge system

UR - https://www.scopus.com/pages/publications/85061625377

U2 - 10.1016/j.energy.2019.01.150

DO - 10.1016/j.energy.2019.01.150

M3 - Article

AN - SCOPUS:85061625377

SN - 0360-5442

VL - 172

SP - 1027

EP - 1036

JO - Energy

JF - Energy

ER -

Energy recovery potential of anaerobic digestion of excess sludge from high-rate activated sludge systems co-treating municipal wastewater and food waste

Abstract

Bibliographical note

Funding

UN SDGs

Keywords

Access to Document

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