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

descriptionPublicationkeyboard_double_arrow_right Article , Journal , Other literature type 13 Aug 2014 Netherlands Publisher:MDPI AGJournal:Water, volume 6, pages 2,436-2,448 (eissn: 2073-4441,

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

doi: 10.3390/w6082436

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

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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.

Country

Netherlands

Related Organizations

WAGENINGEN UNIVERSITY
Netherlands
Université Wageningen
Netherlands
Wageningen University & Research
Netherlands

Keywords

uasb reactor, sewage-sludge, energy recovery; anaerobic treatment; grey water sludge; black water; heavy metals, energy recovery, biogas production, municipal solid-wastes, anaerobic treatment, co-digestion, decentralized sanitation, black water, heavy metals, TD201-500, grey water sludge, Water supply for domestic and industrial purposes, grease trap sludge, Hydraulic engineering, reuse, systems, TC1-978

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	26
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%