Abstract：
:DS-EBPR is an alternative to the conventional activated sludge process which face great challenge for treatment of seawater-based highly saline wastewater. This study aims to investigate the impacts of long-term (248 days) 20% and 30% seawater fractions and short-term shock of 30%, 40%, 70% and 100% seawater fractions (corresponding to 1.0, 1.4, 2.5 and 3.5% of salinity) on the DS-EBPR performance, kinetics and microbial community structure. Long-term operation with high fraction (30%) of seawater marginally decreased the sulfur conversion and phosphorus uptake, which correlated well with the microbial dynamics. Temporal salinity shock from 1.0% (30% seawater) to 3.5% (100% seawater) remarkably reduced the phosphorus release/uptake by 36-44%, which was partly due to the decrease in the abundance of functional bacteria and chlorapatite (Ca5[PO4]3Cl) forming as P precipitates with 70-100% seawater addition. The formed chlorapatite contributed to approximately 8-26% of total P removal estimated by X-ray photoelectron spectroscopy analysis.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wu Z,Guo G,Kumar Biswal B,Dai J,Chen Gdoi
10.1016/j.biortech.2020.123574subject
Has Abstractpub_date
2020-10-01 00:00:00pages
123574eissn
0960-8524issn
1873-2976pii
S0960-8524(20)30846-4journal_volume
313pub_type
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