Improved Energy Recovery by Anaerobic Grey Water Sludge Treatment with Black Water

T.H. Tervahauta; I.M. Bryant; L. Hernandez Leal; C.J.N. Buisman; G. Zeeman

doi:10.3390/w6082436

Improved Energy Recovery by Anaerobic Grey Water Sludge Treatment with Black Water

T.H. Tervahauta, I.M. Bryant, L. Hernandez Leal, C.J.N. Buisman, G. Zeeman

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

26 Citations (Scopus)

Abstract

This study presents the potential of combining anaerobic grey water sludge treatment with black water in an up-flow anaerobic sludge blanket (UASB) reactor to improve energy recovery within source-separated sanitation concepts. Black water and the mixture of black water and grey water sludge were compared in terms of biochemical methane potential (BMP), UASB reactor performance, chemical oxygen demand (COD) mass balance and methanization. Grey water sludge treatment with black water increased the energy recovery by 23% in the UASB reactor compared to black water treatment. The increase in the energy recovery can cover the increased heat demand of the UASB reactor and the electricity demand of the grey water bioflocculation system with a surplus of 0.7 kWh/cap/y electricity and 14 MJ/cap/y heat. However, grey water sludge introduced more heavy metals in the excess sludge of the UASB reactor and might therefore hinder its soil application.

Original language	English
Pages (from-to)	2436-2448
Journal	Water
Volume	6
Issue number	8
DOIs	https://doi.org/10.3390/w6082436
Publication status	Published - 2014

Keywords

municipal solid-wastes
grease trap sludge
co-digestion
sewage-sludge
decentralized sanitation
biogas production
uasb reactor
systems
reuse

UN SDGs

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

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title = "Improved Energy Recovery by Anaerobic Grey Water Sludge Treatment with Black Water",

abstract = "This study presents the potential of combining anaerobic grey water sludge treatment with black water in an up-flow anaerobic sludge blanket (UASB) reactor to improve energy recovery within source-separated sanitation concepts. Black water and the mixture of black water and grey water sludge were compared in terms of biochemical methane potential (BMP), UASB reactor performance, chemical oxygen demand (COD) mass balance and methanization. Grey water sludge treatment with black water increased the energy recovery by 23% in the UASB reactor compared to black water treatment. The increase in the energy recovery can cover the increased heat demand of the UASB reactor and the electricity demand of the grey water bioflocculation system with a surplus of 0.7 kWh/cap/y electricity and 14 MJ/cap/y heat. However, grey water sludge introduced more heavy metals in the excess sludge of the UASB reactor and might therefore hinder its soil application.",

keywords = "municipal solid-wastes, grease trap sludge, co-digestion, sewage-sludge, decentralized sanitation, biogas production, uasb reactor, systems, reuse",

author = "T.H. Tervahauta and I.M. Bryant and {Hernandez Leal}, L. and C.J.N. Buisman and G. Zeeman",

year = "2014",

doi = "10.3390/w6082436",

language = "English",

volume = "6",

pages = "2436--2448",

journal = "Water",

issn = "2073-4441",

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T1 - Improved Energy Recovery by Anaerobic Grey Water Sludge Treatment with Black Water

AU - Tervahauta, T.H.

AU - Bryant, I.M.

AU - Hernandez Leal, L.

AU - Buisman, C.J.N.

AU - Zeeman, G.

PY - 2014

Y1 - 2014

N2 - This study presents the potential of combining anaerobic grey water sludge treatment with black water in an up-flow anaerobic sludge blanket (UASB) reactor to improve energy recovery within source-separated sanitation concepts. Black water and the mixture of black water and grey water sludge were compared in terms of biochemical methane potential (BMP), UASB reactor performance, chemical oxygen demand (COD) mass balance and methanization. Grey water sludge treatment with black water increased the energy recovery by 23% in the UASB reactor compared to black water treatment. The increase in the energy recovery can cover the increased heat demand of the UASB reactor and the electricity demand of the grey water bioflocculation system with a surplus of 0.7 kWh/cap/y electricity and 14 MJ/cap/y heat. However, grey water sludge introduced more heavy metals in the excess sludge of the UASB reactor and might therefore hinder its soil application.

AB - This study presents the potential of combining anaerobic grey water sludge treatment with black water in an up-flow anaerobic sludge blanket (UASB) reactor to improve energy recovery within source-separated sanitation concepts. Black water and the mixture of black water and grey water sludge were compared in terms of biochemical methane potential (BMP), UASB reactor performance, chemical oxygen demand (COD) mass balance and methanization. Grey water sludge treatment with black water increased the energy recovery by 23% in the UASB reactor compared to black water treatment. The increase in the energy recovery can cover the increased heat demand of the UASB reactor and the electricity demand of the grey water bioflocculation system with a surplus of 0.7 kWh/cap/y electricity and 14 MJ/cap/y heat. However, grey water sludge introduced more heavy metals in the excess sludge of the UASB reactor and might therefore hinder its soil application.

KW - municipal solid-wastes

KW - grease trap sludge

KW - co-digestion

KW - sewage-sludge

KW - decentralized sanitation

KW - biogas production

KW - uasb reactor

KW - systems

KW - reuse

U2 - 10.3390/w6082436

DO - 10.3390/w6082436

M3 - Article

SN - 2073-4441

VL - 6

SP - 2436

EP - 2448

JO - Water

JF - Water

IS - 8

ER -

Improved Energy Recovery by Anaerobic Grey Water Sludge Treatment with Black Water

Abstract

Keywords

UN SDGs

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