Grey water biodegradability

Abu Ghunmi, L.; Zeeman, G.; Fayyad, M.; Van Lier, J.B.

doi:doi:10.1007/s10532-010-9385-5

Grey water biodegradability

Title

Grey water biodegradability

Author

Abu Ghunmi, L.
Zeeman, G.
Fayyad, M.
Van Lier, J.B.

Faculty

Civil Engineering and Geosciences

Department

Water Management

Date

2010-06-25

Abstract

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, k 20, 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.

Subject

anaerobic
aerobic
biodegradability
rate
grey water
temperature

To reference this document use:

http://resolver.tudelft.nl/uuid:8695b9b4-9971-46ac-9688-7c8604294f9d

DOI

https://doi.org/10.1007/s10532-010-9385-5

Publisher

Springer

ISSN

0923-9820

Source

http://www.springerlink.com/content/g211030266581207/