Molecular behavior and interactions with microbes during anaerobic degradation of bio-derived DOM in waste leachate

It is the key to control bio-derived dissolved organic matters (DOM) in order to reduce the effluent concentration of wastewater treatment, especially for waste leachate with high organic contaminants. In the present study, the anaerobic degradation of aerobically stabilized DOM was investigated with DOM substrate isolated through electrodialysis. The degradation of bio-derived DOM was confirmed by reduction of 15% of total organic carbon in 100 days. We characterized the molecular behavior of bio-derived DOM by coupling molecular and biological information analysis. Venn based Sankey diagram of mass features showed the transformation of bio-derived DOM mass features. Occurrence frequency analysis divided mass features into six categories so as to distinguish the fates of intermediate metabolites and persistent compounds. Reactivity continuum model and machine learning technologies realized the semi-quantitative determination on the kinetics of DOM mass features in the form of pseudo-first order, and confirmed the reduction of inert mass features. Furthermore, network analysis statistically establish relationship between DOM mass features and microbes to identify the active microbes that are able to utilize bio-derived DOM. This work confirmed the biological technology is still effective in controlling recalcitrant bio-derived DOM during wastewater treatment.     

神府东胜矿区生态环境问题及对策

在调查研究分析的基础上，从分析矿区生态环境影响的特点入手，针对矿区开发建设中存在的主要生态问题，提出了保护生态环境的对策和措施，对于矿区的生态环境保护和可持续发展具有一定的参考价值。     

填埋处理场易发的各种环境问题及其对策

固体废弃物的填埋处理法在处理量和处理成本等方面比起其他方法有很强的优势，然而填埋处理场如果得不到正确的运转和管理，将成为新的污染源，易引发地表水和地面水污染、大气污染以及甲烷气体爆炸等环境问题。鉴于上述问题，文中针对上述事例介绍了排气设备、诱引气床等物理和化学方面的防止对策。     

对地勘安全工作的认识和安全教育工作思考

随着国家机构改革，原地勘队伍进行了属地化管理，在国家安全管理体制变化影响下，省级及以下部门安全管理体制也发生了相应变化，本文就变化过程中出现的新情况进行了阐述，对新形势下加强地勘安全教育工作进行了探讨。     

矿区土地复垦与对策

较系统地总结了从开矿到复垦过程中需要在土地整理方面做的工作，研究借鉴目前国内外土地复垦的方法，讨论土地复垦过程中出现的问题及复垦后所应采取的对策。     

Mercury consumption and contamination of environment in gold mining in China

1　ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｇｏｌｄｉｎｄｕｓｔｒｙｉｎＣｈｉｎａｇｒｏｗｓｕｐｑｕｉｃｋｌｙｗｉｔｈｔｈｅｇｒｏｗｔｈｒａｔｅｏｆａｂｏｕｔ 10 %ｓｉｎｃｅ 90’ｓ.Ｉｎ 1995,ｔｈｅｐｒｏｄｕｃｔｉｏｎｏｆｇｏｌｄｗａｓｏｖｅｒ10 0ｔｏｎｓ/ａ,ａｎｄｉｎ 1996ｒｅａｃｈｅｄ 12 0ｔｏｎｓ/ａ .Ｉｔｉｓｒａｎｋｅｄｓｉｘｔｈｉｎｔｈｅｗｏｒｌｄ(Ｃｈａｎｇ ,1995) .Ｔｈｅｉｒｍａｉｎｐｒｏｃｅｄｕｒｅｓｏｆｇｏｌｄｅｘｔｒａｃｔｉｏｎａｒｅ :(1)ｃｙａｎｉｚａｔｉｏｎｉｎｔｏｔａｌｏｒｅ ｃａｒｂｏ…     

选矿尾砂综合利用的探讨

对选矿尾砂采用再磨再选工艺回收尾矿砂中的金、银、铜、铁 ,再选尾砂采用全尾砂水淬渣膏体充填技术充填井下采场 ,实现微渣排放 ,再选产生的废水经净化处理后回用于选矿作业     

铁法煤田地面沉降状况及治理对策

煤的开采，地论是露天采还是地下采都必然给环境带来一定的破坏，尤其是采空区的地面沉陷给当地的地形地貌环境造成了长久甚至是永久性的破坏，给人们的生产和生活带来一定的影响，在对矿井开采区进行地面沉降的基础上，提出了几方面的治理对策。     

Environmental impact of China''''s village and township industry(1988-1992): a comparison with urban industry

１ＩｎｔｒｏｄｕｃｔｉｏｎＶｉｌａｇｅａｎｄｔｏｗｎｓｈｉｐｉｎｄｕｓｔｒｙ（ＶＴＩ）ｉｓｂｅｃｏｍｉｎｇａｖｅｒｙｉｍｐｏｒｔａｎｔｃｏｍｐｏｎｅｎｔｏｆＣｈｉｎａｓｅｃｏｎｏｍｙａｎｄｅｎｖｉｒｏｎｍｅｎｔ．Ｉｎ１９９２，ＶＴＩｐｒｏｄｕｃｅｄ...     

现代测绘技术在解决矿区资源与环境问题中的应用探讨

以“３Ｓ”技术及其集成为代表的现代测绘技术在解决我国矿区存在的资源浪费及环境污染问题中具有重要的应用,本文对此进行了探讨。