Treatment of sidestream dewatering liquors from thermally hydrolised and anaerobically digested biosolids

Journal article (2020)

Authors

W Driessen Paques B.V.
J. T.A. Van Veldhoven Waterschap De Dommel
M. P.M. Janssen Waterschap De Dommel
Mark C.M. van Loosdrecht BT/Environmental Biotechnology - AS
Research Group
BT/Environmental Biotechnology (AS) (TU Delft)
Copyright: © 2020 W. Driessen, J. T.A. Van Veldhoven, M. P.M. Janssen, Mark C.M. van Loosdrecht
DOI: https://doi.org/10.2166/wpt.2020.007
More Info
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Published Date

2020

Language

English

Faculty

Applied Sciences

Department

BT/Biotechnologie

Research Group

BT/Environmental Biotechnology

Abstract

A long term operation (22 months) of the sidestream treatment plant at the water and resource recovery facility at the Tilburg sewage works in The Netherlands is presented. This plant treats dewatering reject liquor from thermally hydrolysed (THP) and mesophillic anaerobically digested (MAD) biosolids. The sidestream plant is comprised of a Phospaq struvite reactor for removal and recovery of phosphate and an Anammox reactor for removal of ammoniacal nitrogen. Potential inhibiting characteristics of THP-MAD reject liquor were successfully mitigated by various measures like pre-aeration and addition of dilution water. The sidestream plant demonstrated excellent performance in handling large fluctuations in load and composition, producing effluent with stable low NH4 and BOD concentrations achieving removal efficiencies up to 90% on both NH4 and BOD.