2026-06-09T18:24:56+02:00 https://library.wur.nl/oai

oai:library.wur.nl:wurpubs/410159 2026-03-31

urn:nbn:nl:ui:32-410159 2026-03-31 urn:nbn:nl:ui:32-410159/mods Grey water biodegradability Abu Ghunmi L. 314605800 0000-0003-3385-5489 0000000395369208 aut Zeeman G. 07149040X 0000000387219648 aut Fayyad M. aut van Lier J.B. 091461901 0000000369415557 aut text info:eu-repo/semantics/article 2011 10.1007/s10532-010-9385-5 2-s2.0-78650520637 000286504100016 en Knowing the biodegradability characteristics of grey water constituents is imperative for a proper design and operation of a biological treatment system of grey water. This study characterizes the different COD fractions of dormitory grey water and investigates the effect of applying different conditions in the biodegradation test. The maximum aerobic and anaerobic biodegradability and conversion rate for the different COD fractions is determined. The results show that, on average, dormitory grey water COD fractions are 28% suspended, 32% colloidal and 40% dissolved. The studied factors incubation time, inoculum addition and temperature are influencing the determined biodegradability. The maximum biodegradability and biodegradation rate differ between different COD fractions, viz. CODss, CODcol and CODdiss. The dissolved COD fraction is characterised by the lowest degradation rate, both for anaerobic and aerobic conditions. The maximum biodegradability for aerobic and anaerobic conditions is 86 and 70% respectively, whereas the first order conversion rate constant, k20, is 0.119 and 0.005 day-1, respectively. The anaerobic and aerobic conversion rates in relation to temperature can be described by the Arrhenius relation, with temperature coefficients of 1.069 and 1.099, respectively WIMEK Environmental Technology greywater treatment microbial quality operation reactor reuse technologies WIMEK Milieutechnologie Biodegradation 22 163 174 09239820 urn:nbn:nl:ui:32-410159/obj 2026-03-31 http://purl.org/eprint/accessRights/RestrictedAccess