共查询到19条相似文献,搜索用时 100 毫秒
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结合贵州省广泛分布的碳酸盐岩与酸性高砷煤矿废水的特点,探讨利用碳酸盐岩处理酸性高砷煤矿废水的可行性,体现了其经济性,促进了矿山环境的修复,从而减少地表环境的有毒有害物质的含量。 相似文献
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采用好氧活性污泥法、悬浮载体膨胀床及厌氧生物反应器分别对含腈废水进行一级处理。实验结果表明,由于含腈废水的CN -毒性和难降解有机物含量高,好氧活性污泥法不适合处理含腈废水。随着活性污泥反应器运行时间的延长,污泥逐渐失去活性,大量微生物死亡。悬浮载体膨胀床处理含腈废水的效果较差,污染物去除率低于15%。厌氧生物反应器适于用作含腈废水的一级处理,污染物去除率可达到35%以上,而且可以改善水质,提高含腈废水的可生化性,有利于后续的生物处理工艺对含腈废水的深度处理。 相似文献
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黄土在我国广泛分布,而我国煤矿企业,为维持煤矿采掘正常进行,都要排放SO42-离子含量很高的酸性矿坑废水。本文通过分析黄土与煤矿酸性废水的成分以及可能发生的反应,来阐述利用黄土处理煤矿酸性废水的可行性。 相似文献
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全面阐述了西曲矿井下污水治理的现状和存在问题,分析了矿井污水污染的特点和BH净水工艺的处理效果通过深入现场和现场实验,得出了可行性结论,提出了改进方案,对其它煤矿矿井污水处理具有深远的意义。 相似文献
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煤炭开采过程中会产生大量的矿井水,而我国西北煤炭矿区水资源匮乏,因此对矿井水进行深度处理后回用是解决矿区水资源短缺的主要途径。对矿井水进行反渗透处理,是未来矿井水深度处理的发展方向。 相似文献
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针对矿井项目污水处理工程中水池的渗漏问题,主要从设计、施工、材料几个方面进行成因分析,然后依据施工经验及规范要求提出相应的防治措施,以提高矿井污水处理工程的质量,保证其正常安全使用。 相似文献
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阐述了神东矿区矿井水开发利用中存在的问题,分析了矿井水的水质特征,探讨了矿井水资源化的处理技术、综合利用途径以及进一步提高矿井水资源综合利用的措施,指出神东矿区矿井水的资源化和综合利用具有显著的经济、社会和环境效益,是缓解其水资源用水矛盾、建立资源节约型矿区的必然选择。 相似文献
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Phosphorus removal by acid mine drainage sludge from secondary effluents of municipal wastewater treatment plants 总被引:1,自引:0,他引:1
Acid mine drainage (AMD) sludge, a waste product from coal mine water treatment, was used in this study as an adsorbent to develop a cost-effective treatment approach to phosphorus removal from municipal secondary effluents. Batch tests were carried out to study the effects of pH, temperature, concentration, and contact time for phosphorus removal from wastewater. Batch tests were followed by continuous flow tests using a continuous stirred tank reactor (CSTR). Adsorption of orthophosphate onto AMD sludge particles followed the Freundlich isotherm model with an adsorption capacity ranging from 9.89 to 31.97 mg/g when the final effluent concentration increased from 0.21 to 13.61 mg P/L. P adsorption was found to be a rather rapid process and neutral or acidic pH enhanced phosphorus removal. Based on a thermodynamic assessment, P adsorption by AMD sludge was found to be endothermic; consequently, an increase in temperature could also favor phosphorus adsorption. Results from batch tests showed that leaching of metals common to AMD sludges was not likely to be a major issue of concern over the typical pH range (6-8) of secondary wastewater effluents. CSTR tests with three types of water (synthetic wastewater, river water, and municipal secondary effluent) illustrated that P adsorption by AMD sludge was relatively independent of the presence of other ionic species. In treating municipal secondary effluent, a phosphorus removal efficiency in excess of 98% was obtained. Results of this study indicated that it was very promising to utilize AMD sludge for phosphorus removal from secondary effluents and may be relevant to future efforts focused on the control of eutrophication in surface waters. 相似文献