Development of a staged anaerobic pond for methane recovery from domestic wastewater

P. H. Cruddas; E. J. McAdam; N. Asproulis; A. Antoniadis; I. Ansari; D. Best; B. Jefferson; E. Cartmell; Gavin Collins; E. Porca; M. R. Peña-Varón

doi:10.1016/j.ecoleng.2018.08.001

Development of a staged anaerobic pond for methane recovery from domestic wastewater

P. H. Cruddas^*
, E. J. McAdam
, N. Asproulis
, A. Antoniadis
, I. Ansari
, D. Best
, B. Jefferson
, E. Cartmell
, Gavin Collins
, E. Porca
, M. R. Peña-Varón

^*Corresponding author for this work

School of Civil Engineering & Surveying

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

Abstract

Since their inception in larger pond systems, the focus of anaerobic ponds has shifted from solids removal to optimising biogas production and reducing physical footprint to minimise land requirements. In this study, a horizontally baffled (HBAP) and vertically baffled (VBAP) anaerobic pond were compared. Distinct differences in the removal efficiency of COD fractions were observed, with particulate COD removal of 78% and 32%, and soluble COD removal of −26% and 19% in the HBAP and VBAP, respectively. A staged pond (SAP) was constructed through an HBAP placed upstream of a VBAP, with an additional HBAP used as a control (CAP). The SAP demonstrated superior biogas recovery potential over the control: methane production by the conclusion of the study was 6.09 and 9.04 LCH₄ m⁻³ wastewater treated for the CAP and SAP, respectively. Methanogenic activity in the ponds was higher closer to the outlet, and hydrogenotrophic methanogenesis dominated over acetoclastic pathways.

Original language	English
Pages (from-to)	169-176
Number of pages	8
Journal	Ecological Engineering
Volume	122
Early online date	8 Aug 2018
DOIs	https://doi.org/10.1016/j.ecoleng.2018.08.001
Publication status	Published - 15 Oct 2018

UN SDGs

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

SDG 6 Clean Water and Sanitation

Keywords

Anaerobic baffled reactors
Biogas
Psychrophilic treatment
Waste stabilisation lagoons

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10.1016/j.ecoleng.2018.08.001

https://dspace.lib.cranfield.ac.uk/handle/1826/13532

Cite this

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title = "Development of a staged anaerobic pond for methane recovery from domestic wastewater",

abstract = "Since their inception in larger pond systems, the focus of anaerobic ponds has shifted from solids removal to optimising biogas production and reducing physical footprint to minimise land requirements. In this study, a horizontally baffled (HBAP) and vertically baffled (VBAP) anaerobic pond were compared. Distinct differences in the removal efficiency of COD fractions were observed, with particulate COD removal of 78\% and 32\%, and soluble COD removal of −26\% and 19\% in the HBAP and VBAP, respectively. A staged pond (SAP) was constructed through an HBAP placed upstream of a VBAP, with an additional HBAP used as a control (CAP). The SAP demonstrated superior biogas recovery potential over the control: methane production by the conclusion of the study was 6.09 and 9.04 LCH4 m−3 wastewater treated for the CAP and SAP, respectively. Methanogenic activity in the ponds was higher closer to the outlet, and hydrogenotrophic methanogenesis dominated over acetoclastic pathways.",

keywords = "Anaerobic baffled reactors, Biogas, Psychrophilic treatment, Waste stabilisation lagoons",

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doi = "10.1016/j.ecoleng.2018.08.001",

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AU - Cruddas, P. H.

AU - McAdam, E. J.

AU - Asproulis, N.

AU - Antoniadis, A.

AU - Ansari, I.

AU - Best, D.

AU - Jefferson, B.

AU - Cartmell, E.

AU - Collins, Gavin

AU - Porca, E.

AU - Peña-Varón, M. R.

PY - 2018/10/15

Y1 - 2018/10/15

N2 - Since their inception in larger pond systems, the focus of anaerobic ponds has shifted from solids removal to optimising biogas production and reducing physical footprint to minimise land requirements. In this study, a horizontally baffled (HBAP) and vertically baffled (VBAP) anaerobic pond were compared. Distinct differences in the removal efficiency of COD fractions were observed, with particulate COD removal of 78% and 32%, and soluble COD removal of −26% and 19% in the HBAP and VBAP, respectively. A staged pond (SAP) was constructed through an HBAP placed upstream of a VBAP, with an additional HBAP used as a control (CAP). The SAP demonstrated superior biogas recovery potential over the control: methane production by the conclusion of the study was 6.09 and 9.04 LCH4 m−3 wastewater treated for the CAP and SAP, respectively. Methanogenic activity in the ponds was higher closer to the outlet, and hydrogenotrophic methanogenesis dominated over acetoclastic pathways.

AB - Since their inception in larger pond systems, the focus of anaerobic ponds has shifted from solids removal to optimising biogas production and reducing physical footprint to minimise land requirements. In this study, a horizontally baffled (HBAP) and vertically baffled (VBAP) anaerobic pond were compared. Distinct differences in the removal efficiency of COD fractions were observed, with particulate COD removal of 78% and 32%, and soluble COD removal of −26% and 19% in the HBAP and VBAP, respectively. A staged pond (SAP) was constructed through an HBAP placed upstream of a VBAP, with an additional HBAP used as a control (CAP). The SAP demonstrated superior biogas recovery potential over the control: methane production by the conclusion of the study was 6.09 and 9.04 LCH4 m−3 wastewater treated for the CAP and SAP, respectively. Methanogenic activity in the ponds was higher closer to the outlet, and hydrogenotrophic methanogenesis dominated over acetoclastic pathways.

KW - Anaerobic baffled reactors

KW - Biogas

KW - Psychrophilic treatment

KW - Waste stabilisation lagoons

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DO - 10.1016/j.ecoleng.2018.08.001

M3 - Article

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SN - 0925-8574

VL - 122

SP - 169

EP - 176

JO - Ecological Engineering

JF - Ecological Engineering

ER -

Development of a staged anaerobic pond for methane recovery from domestic wastewater

Abstract

UN SDGs

Keywords

Access to Document

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