灰色关联分析在铅锌矿区地表水重金属污染评价中的应用

介绍了灰色关联分析法用于地表水环境质量评价的基本步骤,并以陕西凤县寺沟铅锌矿区为例,在实验室采用火焰原子吸收分光光度计法,对该矿区6个监测点的水样进行测试.在该矿区地表水分析测试资料的基础上,采用灰色关联分析法对地表水环境质量的现状进行评价.结果表明,基于灰色关联分析的地表水重金属污染评价方法能较完整地反映地表水环境质量污染程度,是一种实用而准确的评价方法,且易于推广使用.     

高炉出铁口烟尘捕集技术浅析

介绍了高炉出铁口烟尘捕集的重要性和困难性,分析和比较了三种主要大型高炉出铁口烟尘捕集方式的特点,指出了其发展趋势。     

Temporal variability of iron concentrations and fractions in wetland waters in Sanjiang Plain, Northeast China

Chemical forms, reactivities and transformation of iron fractions in marshy waters were investigated with cross-flow filtration technique to study the iron environmental behavior. Iron fractions were divided into four parts: acid-labile iron (pre-acidification of unfiltered marshy water samples, 0.7 μm), high-molecular-weight iron (0.7-0.05 μm), medium-molecular-weight iron (0.05-0.01 μm), and low-molecular-weight iron ( 0.01 μm). The cross-flow filtration suggested that iron primarily exist in both the 0.7 μm and 0.01 μm size fractions in marshy waters. Rainfall is the key for rain-fed wetland to determine fate of iron by changing the aquatic biochemical conditions. By monitoring the variation of iron concentrations and fractions over three years, it was found that dissolved iron and acid-labile iron concentrations exhibit a large variation extent under different annual rainfalls from 2006 to 2008. The seasonal variation for iron species proved that the surface temperature could control some conversion reactions of iron in marshy waters. Low- molecular-weight iron would convert to acid-labile iron gradually with temperature decreasing. The photochemical reactions of iron fractions, especially low-molecular-weight iron had occurred under solar irradiation. The relative proportion of low-molecular-weight in total dissolved iron ranging from 28.3% to 43.2% were found during the day time, which proved that the observed decreasing concentration of acid lability iron was caused by its degradation to low molecular weight iron.     

大屯矿区矿井水和生活污水处理利用技术

随着煤炭矿区经济的高速发展,矿区缺水问题越来越突出,解决矿区缺水问题的有效途径是合理开发利用矿井水和生活污水资源。以大屯矿区矿井水与生活污水处理利用工程实例为背景,以处理后的矿井水与生活污水回用途径为依据,论述了大屯矿区矿井水净化处理与深度处理、生活污水二级生化处理与深度处理及利用工艺技术,介绍了大屯矿区矿井水与生活污水处理后的利用模式,供其他类似矿区开展矿井水和生活污水资源化借鉴。     

鄂尔多斯市伊金霍洛旗某煤矿矿井水回用工程

采用过滤-气浮-活性炭吸附-消毒的处理工艺处理矿井水,出水水质达到了生活饮用水卫生标准（GB5749-2006）,出水可用于洗浴,其处理过程为煤矿矿井水回用提供了参考实例。     

关于钢铁企业发展低碳经济的思考

低碳经济是以低能耗、低污染、低排放为基本特征的一种经济发展模式。介绍了发达国家及我国为了发展低碳经济,所制定的法律法规及采取的措施。指出我国发展低碳经济所面临的困难和挑战,特别是我国钢铁工业发展低碳经济所面临的困难更大。提出钢铁企业创新理念、迎难而上,实现钢铁企业低碳化、生态化目标的具体思路。     

短流程钢铁企业发展循环经济的模式

大力发展短流程钢铁企业,是钢铁工业节能减排、发展循环经济、实现可持续发展的重要途径。介绍了国内外电炉短流程钢铁企业的发展情况,阐述了短流程钢铁企业三低两高发展循环经济的模式,提出提高我国短流程炼钢产量占总产量比重必须采取的战略措施,以及短流程钢铁企业发展循环经济亟需解决的关键问题。     

钢铁工业发展循环经济要解决的关键问题

作为经济发展的重要基础产业,钢铁工业在我国国民经济建设中发挥了不可替代的作用。针对钢铁工业发展过程中存在的矛盾和问题,提出发展循环经济,建设资源节约型、环境友好型钢铁工业重点要解决的几个问题。     

石灰和混凝沉淀相结合处理含SO42-和F-矿井水

采用石灰和混凝沉淀相结合的方法去除含SO42-和F-矿井水,并对去除机理及影响因素进行了研究。结果表明：石灰沉淀的最佳处理条件为石灰乳浓度5%,投加比20：1,沉淀平衡时间为6h;混凝沉淀的最佳条件为PAC溶液浓度25%,用量2 mL/100 mL,沉淀平衡时间为20 min,pH值6～8,温度20℃。处理后,SO42-脱除率大于91.0%,SO42-含量小于30 mg/L;F-脱除率大于78.5%,F-含量小于0.3 mg/L。     

邻菲哕啉分光光度法测定水中总铁的改进

对邻菲哕啉分光光度法测定水中总铁的方法进行了改进：采用50ml比色管水浴还原水样--分光光度计比色测定水中总铁。测试结果表明,改进法精密度和准确度均优于标准方法,是测定水中总铁较为理想的方法