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选矿厂三废利用与治理生产实践 总被引:2,自引:0,他引:2
本介绍了水厂选矿厂产生的尾矿、废水、废气的现状及利用、治理方法和取得的经济效益。近几年来,为贯彻可持续发展战略,达到清洁生产的环保要求,加大了对三废利用与治理的技术攻关和资金投入,成功地实现了尾矿作为二次资源充分利用、废水不外排全部再利用、废气达标准放的目标,并取得良好的经济效益和社会效益。 相似文献
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A novel acidophile community populating waste ore deposits at an acid mine drainage site 总被引:1,自引:0,他引:1
Waste ore samples (pH 3.0) were collected at an acid mine drainage (AMD) site in Anhui, China. The present acidophillc microbial community in the waste ore was studied with 16S rRNA gene clone library and denaturing gradient gel electrophoresis (DGGE). Eighteen different clones were identified and affiliated withActinobacteria, low G + C Gram-positives, Thermomicrobia, Acidobacteria, Proteobacteria, candidate division TM7, and Planctomycetes. Phylogenetic analysis of 16S rRNA gene sequences revealed a diversity of acidophiles in the samples that were mostly novel. It is unexpected that the moderately thermophilic acidophiles were abundant in the acidic ecosystem and may play a great role in the generation of AMD. The result of DGGE was consistent with that of clone library analysis. These findings help in the better understanding of the generation mechanism of AMD and in developing a more efficient method to control AMD. 相似文献
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TIAN Dalun ZHU Fan YAN Wende Fang Xi XIANG Wenhu DENG Xiangwen WANG Guangjun PENG Changhui 《环境科学学报(英文版)》2009,21(3):340-345
Phytoremediation can be used as a sustainable technology for mine spoil remediation to remove heavy metals. This study investigated
the concentration of 7 heavy metal contamination in soil and plant samples at an abandoned mine site. We found that, after vegetation
remediation at the abandoned mine site, the reduction rates for 7 heavy metals were in the range of 4.2%–86%, where reduction rates
over 50% were achieved for four heavy metals (Zn, Mn, Cd, Ni). Transfer coe cients of the panicled goldenrain tree (Koelreuteria
paniculata Laxm) and the common elaeocarpus (Elaeocarpus decipens) for Zn, Mn, Ni, and Co were more than 1. Enrichment
coe cients of both trees for Mn were higher than 1. Our results suggest that the panicled goldenrain tree and the common elaeocarpus
tree may act as accumulators in remediation. Moreover, the woody vegetation remediation in abandoned mining areas play an important
role in improving scenery besides removing heavy metal from contaminated soil. 相似文献
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