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Titolo:
Oilfield wastewater treatment by combined microfiltration and biological processes
Autore:
Campos, JC; Borges, RMH; Oliveira, AM; Nobrega, R; SantAnna, GL;
Indirizzi:
Univ Fed Rio de Janeiro, COPPE, BR-21945970 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro Rio De Janeiro Brazil BR-21945970 BCeiro, Brazil Univ Fed Rio de Janeiro, NPPN, BR-21941590 Rio De Janeiro, Brazil Univ FedRio de Janeiro Rio De Janeiro Brazil BR-21941590 BCeiro, Brazil
Titolo Testata:
WATER RESEARCH
fascicolo: 1, volume: 36, anno: 2002,
pagine: 95 - 104
SICI:
0043-1354(200201)36:1<95:OWTBCM>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
WATER; OIL; ULTRAFILTRATION; COMPONENTS; REMOVAL; REACTOR;
Keywords:
oilfield wastewater; microfiltration; air-lift bioreactor; toxicity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Sant'Anna, GL Univ Fed Rio de Janeiro, COPPE, POB 68502, BR-21945970 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro POB 68502 Rio De Janeiro Brazil BR-21945970 BC
Citazione:
J.C. Campos et al., "Oilfield wastewater treatment by combined microfiltration and biological processes", WATER RES, 36(1), 2002, pp. 95-104

Abstract

This work deals with the treatment of offshore oilfield wastewater from the Campos Basin (Rio de Janeiro State, Brazil). After coarse filtration, this high saline wastewater was microfiltrated through mixed cellulose ester (MCE) membranes, resulting in average removals of COD, TOC, O&G and phenols of 35%, 25%, 92% and 35%, respectively. The permeate effluent was fed into a 1-L air-lift reactor containing polystyrene particles of 2 mm diameter, used as support material. This reactor was operated for 210 days, at three hydraulic retention times (HRT): 48, 24 and 12 h. Even when operated at the lowest HRT (12 h), removal efficiencies of 65% COD, 80% TOC, 65% phenols and 40% ammonium were attained. The final effluent presented COD and TOC values of 230 and 55 mg/L, respectively. Results obtained by gas chromatographyanalyses and toxicity tests with Artemia salina showed that a significant improvement in the effluent's quality was achieved after treatment by the combined (microfiltration/biological) process. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 28/01/20 alle ore 21:05:19