黔中地区二级阶地堆积物边坡稳定性对工程建设的影响

结合在建工程清水河大花水电站实例,本文对黔中地区二级阶地堆积物边坡成因、堆积物物质成份、结构与其物理力学特性作了分析、总结,初步探讨了贵州省二级阶地堆积物边坡稳定性对工程建设的影响,望能给正在进行工程建设的同行以一定的参考,并对工程建设区的二级地堆积物边坡稳定性引起重视。     

GHG emission reductions and costs to achieve Kyoto target

Emission projection and marginal abatement cost curves (MACs) are the central components of any assessment of future carbonmarket, such as CDM (clean development mechanism) potentials, carbon quota price etc. However, they are products of very complex,dynamic systems driven by forces like population growth, economic development, resource endowments, technology progress and so on. The modeling approaches for emission projection and MACs evaluation were summarized, and some major models and their results were compared.Accordingly, reduction and cost requirements to achieve the Kyoto target were estimated. It is concluded that Annex I Parties‘ total reduction requirements range from 503--1304 MtC with USA participation and decrease significantly to 140--612 MtC after USA‘ s withdrawal. Total costs vary from 21--77 BUSD with USA and from 5--36 BUSD without USA if only domestic reduction actions are taken. The costs would sharply reduce while considering the three flexible mechanisms defined in the Kyoto Protocol with domestic actions‘ share in the all mitigation strategies drons to only 0--16%.     

我国热带地区胶—茶—鸡农林复合系统物质循环研究

以海南省文昌市典型的胶—茶—鸡农林复合模式为研究对象 ,以单作胶园、胶茶间作园为对照 ,采用定量研究与定性分析相结合的方法 ,研究其物质循环规律。结果表明 ,胶—茶—鸡农林复合系统的氮、磷输入、输出量最大 ,系统外物质投入率比另两系统明显减少 ,系统内养分循环量增加 ,因此 ,该系统具有较合理的物质循环结构。     

过氧化氢在处理煤气废水中的应用

过氧化氢作为氧化剂应用于煤气废水的处理.通过对过氧化氢投入量与COD的比例关系、反应时间对酚类物质去除的影响实验分析,当COD与H2O2的浓度比为11时,反应进行30 min后,可以使废水中可降解的酚类物质基本去除,并在实际应用中证明了它的可行性.     

控制乡镇企业污染的对策建议

乡镇企业的迅速发展，对经济发展作出了重要贡献，但由于乡镇企业还未彻底摆脱粗放经营的发展模式，存在设备陈旧，工艺落后，管理水平低等问题，对农村环境造成很大污染。污染物蔓延到农田和农村居民点，农村的生产和生活环境变坏，有毒物质还富集在农产品内，人和牲畜的健康受到威胁。农业是郓城经济的基础，     

Effects of the surface chemistry of macroreticular adsorbents on the adsorption of 1-naphthol/1-naphthylamine mixtures from water

The adsorption behaviors of 1-naphthol, 1-naphthylamine and l-naphthol/l-naphthylamine mixtures in water over two macroreticular adsorbents were investigated in single or binary batch systems at 293 K, 303 K and 313 K respectively. All the adsorption isotherms in the studied systems can be adequately fitted by Langmuir model. In the case of aminated macroreticular adsorbent NDA103, 1-naphthol is adsorbed to a larger extent than 1-naphthylamine; while, the opposite trend is found for nonpolar macroreticular adsorbent NDA100. It is noteworthy that at higher temperature（303 K and 313 K）, the total uptake amounts of 1-naphthol and 1-naphthylamine in all binary-component systems are obvious larger than the pure uptake amounts in single-component systems, which is presumably due to the cooperative effect primarily arisen from the hydrogen-bonding interaction between the loaded 1-naphthol and 1-naphthylamine molecules. The simultaneous adsorption systems were confirmed to be helpful to the selective adsorption towards 1-naphthol according to the larger selective index.     

松花江氯苯类有机污染物的水质标准制定

松花江具有冰封期较长,江水中有机毒物难降解、迁移距离长等环境特点.为了控制污染、保护生态环境、维护生态安全、结合松花江特点,研究并制定了松花江氯苯类有机污染物水质标准.本标准已列为地方标准(GB23/T901-2005).     

物化／两级好氧生化法处理皮革废水

广州市新星皮革厂污水处理站规模为200m^3／d，采用物化／两级好氧处理工艺，在进水CODCT为2500～3000mg／L。BOD5为1200～1500mg／L，SS为320～600mg／L，pH为6～10，Cr总≤52．7mg／L，Cr^6 ≤5．6mg/L色度约为240倍的条件下，处理后出水水质为CODCT≤80mg／L，BOD≤30mg／L，SS≤70mg/L，pH为6～9，Cr总≤1．2mg/L，Cr^6 ≤0.4mg／L，色度≤40倍。达到了《广州市污水排放标准》(DB44137-90)新扩改一级标准。     

pH样品实验室间比对报告

对25个实验室pH测定结果进行统计检验，按保证值及不确定度，评价各个实验室的分析能力。     

ISO14000与煤炭企业的可持续发展

本文结合煤炭企业的自身特点，论述了在煤炭企业开发ISO14000环境标准的重大意义和如何开发和实施ISO14000。此外，还就存在的问题提出了解决办法，以实现煤炭企业的可持续发展。