期刊
JOURNAL OF CLEANER PRODUCTION
卷 18, 期 3, 页码 248-253出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2009.10.013
关键词
AMD; Bioremediation; Irrigation water; Sulphate-reducing bacteria
资金
- Fundacao para a Ciencia e a Tecnologia (FCT) [POCI/AMB/58512/2004, PPCDT/AMB/60257/2004, SFRH/BD/29677/2006]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/29677/2006, POCI/AMB/58512/2004] Funding Source: FCT
The ability of two active bioremediation systems, based on the activity of sulphate-reducing bacteria, for the production of irrigation water from acid mine drainage (AMD), was compared. System I consisted of a packed bed reactor containing calcite tailing followed by an anaerobic packed bed bioreactor. System II consisted of a settler, fed with AMD and treated water recycle, and a sulphidogenic anaerobic packed bed bioreactor. fed with clarified settler effluent. Although efficient in terms of pH neutralisation and metals removal, system I did not allow continuous production of suitable irrigation water, since the concentration of sulphate in the effluent frequently exceeds the maximum recommended value by local legislation. On the other hand, in system II very high sulphate reduction (>99.0%) was achieved during the whole experiment, being the values in the effluent much lower than legislated limits for irrigation water. System II, not requiring the addition of any neutralising agent, can also be advantageous from an economical perspective. (C) 2009 Elsevier Ltd. All rights reserved.
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