Surface flow constructed wetland for heavy oil-produced water treatment

Heavy oil-produced water from China’ Liaohe Oilfield was purified in a surface flow constructed wetland (SFCW) during a 3-yr field experiment. Treatment showed high mean removal efficiencies of 80%, 93%, 88% and 86% for COD, oil, BOD and TKN, respectively for reed bed #1 and 71%, 92%, 77%, and 81% f...

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Veröffentlicht in:	Bioresource technology 2007, Vol.98 (2), p.436-441
Hauptverfasser:	Ji, G.D., Sun, T.H., Ni, J.R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Biological treatment of waters Biotechnology COD Environment and pollution Fundamental and applied biological sciences. Psychology Heavy oil Industrial applications and implications. Economical aspects Petroleum - analysis Produced water Surface flow constructed wetland Time Factors Water Pollutants, Chemical Water Pollution, Chemical - prevention & control Water Purification - methods Wetlands
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Zusammenfassung:	Heavy oil-produced water from China’ Liaohe Oilfield was purified in a surface flow constructed wetland (SFCW) during a 3-yr field experiment. Treatment showed high mean removal efficiencies of 80%, 93%, 88% and 86% for COD, oil, BOD and TKN, respectively for reed bed #1 and 71%, 92%, 77%, and 81% for COD, oil, BOD and TKN, respectively for reed bed #2. The results also showed that in the third year of the system’s operation, the oil-produced water had mainly positive impacts on the reed’s health parameters. Thus, reed can be used as a feasible wetland macrophyte for treating such wastewater, and this SFCW system can operate for a long time.
ISSN:	0960-8524 1873-2976
DOI:	10.1016/j.biortech.2006.01.017