Biological detoxification of precious metal processing wastewaters
作者:
JamesL. Whitlock,
期刊:
Geomicrobiology Journal
(Taylor Available online 1990)
卷期:
Volume 8,
issue 3-4
页码: 241-249
ISSN:0149-0451
年代: 1990
DOI:10.1080/01490459009377896
出版商: Taylor & Francis Group
关键词: Biofilm;cyanide;detoxification;mining operation;precious metals;Pseudomonas;rotating biological contactors;wastewater
数据来源: Taylor
摘要:
A biological treatment plant is utilized at the Homestake Mine in Lead, SD, to effect detoxification of a daily discharge of 4 million gallons of wastewater. The wastewater matrix requiring treatment contains cyanide, ammonia, toxic heavy metals, and a variable component of toxic chemicals associated with extractive metallurgy and mining operations. Rotating biological contactors (RBCs) are used to attach the biofilm. Cyanides and heavy metals concentrations are reduced by 95–98%. The treated discharge makes up as much as 60% of the total flow in a cold‐water trout fishery. This receiving stream, which remained lifeless for over 100 years as a mine drainage, has now become an established trout fishery and recently yielded a state record trout.
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