Forward osmosis membrane bioreactor for wastewater treatment with phosphorus recovery
Journal
Bioresource Technology
Journal Volume
198
Pages
418-423
Date Issued
2015
Author(s)
Abstract
A forward osmosis membrane bioreactor (OMBR) with a thin film composite membrane was seeded with flocculated sludge and aerobic granules to treat a synthetic wastewater with 1M NaCl as draw solution. The tested OMBR showed 96%, 43% and 100% removal of PO43--P, NH4+-N, and total organic carbon. Salinity was accumulated in OMBR principally owing to membrane rejection and salt leakage from draw solution. At high salinity level membrane fouling could be induced. Intermittent withdrawal and replenishment of supernatant from OMBR maintained its operation stability, while phosphorus in withdrawn supernatant was recovered by pH adjustment. The OMBR enriched phosphorus concentration from 156mg/L in feed solution to 890-990mg/L. At pH 8.5 with 2.65-2.71g3M NaOH/g-P, 814-817mg-P/L was recovered in the form of sodium hydrogen phosphite hydrate. The OMBR is a volatile wastewater treatment unit with capability for enrichment and recovery of phosphorus at reduced chemical costs. © 2015 Elsevier Ltd.
Subjects
Aerobic granule; Forward osmosis; Membrane bioreactor; Phosphorus recovery; Thin-film composite membrane
SDGs
Other Subjects
Bioconversion; Bioreactors; Carbon; Composite membranes; Granular materials; Granulation; Membrane fouling; Membranes; Organic carbon; Osmosis membranes; Phosphorus; Recovery; Thin films; Aerobic granules; Forward osmosis; Membrane bioreactor; Phosphorus recovery; Thin film composite membranes; Wastewater treatment; phosphorus; sodium chloride; artificial membrane; phosphorus; sewage; waste water; bioreactor; cost-benefit analysis; film; flocculation; membrane; osmosis; oxic conditions; pH; phosphorus; pollutant removal; recovery; sludge; sodium chloride; thin section; wastewater; water treatment; Article; bioreactor; film; forward osmosis; membrane reactor; osmosis; pH; priority journal; salinity; sludge; total organic carbon; waste water; waste water management; artificial membrane; chemistry; economics; osmosis; procedures; sewage; water management; Bioreactors; Membranes, Artificial; Osmosis; Phosphorus; Salinity; Sewage; Waste Water; Water Purification
Type
journal article