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Forward osmosis membrane bioreactor for wastewater treatment with phosphorus recovery

  • Li-ying Huang
  • , Duu-Jong Lee*
  • , Juin-Yih Lai
  • *Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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withdrawal and replenishment of supernatant from OMBR maintained its operation stability, while phosphorus in withdrawn supernatant was recovered by pH adjustment.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.
Original languageEnglish
Pages (from-to)418-423
JournalBioresource Technology
Volume198
DOIs
Publication statusPublished - 1 Dec 2015
Externally publishedYes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 6 - Clean Water and Sanitation
    SDG 6 Clean Water and Sanitation

Research Keywords

  • Aerobic granule
  • Forward osmosis
  • Membrane bioreactor
  • Phosphorus recovery
  • Thin-film composite membrane

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