水中硝酸盐氮检测方法准确度的探讨与改进

对GB 5750-85中二磺酸酚分光光度法测定水中硝酸盐氮的准确进行探讨。实验结果表明，该方法在标准曲线的制作上存在一定的误差（相对误差10.4%）。采用改动后的方法制作标准曲线后，保证了标准曲线制作与样品检测的同步性，消除了原有的误差（相对误差2.8%），提高了准确度。     

突发性水体污染对船舶海上行驶影响建模分析

传统的研究模型在分析突发性水体污染对船舶海上行驶影响这一问题上,建模有效率低,分析结果准确率差。为了解决这一问题,在传统研究的基础上建立一个新的模型,对船舶海上行驶进行坐标系建立,根据动力定位船舶在海上行驶的具体运动状态,建立固定于地表的坐标系与以船舶为重心的形式坐标系,从初始坐标数据中实现对船舶的海上行驶数据的掌控,根据船舶的整体构造进行精准分析,查找其可能出现的海上行驶信息错误位置,检测受到突发性水体污染后的海浪形状,构建模型。实验结果表明,给出的模型能够精准地分析突发性水体污染对船舶海上行驶影响,有效性高。     

南京大学孙成专家来校讲学

2005年10月27日,南京大学环境学院孙成专家来我校作题为《谈谈当前中国水体污染控制技术》的讲座。孙先生以太湖——镇江“863”重大项目为例,介绍了我国当前水体污染的特点和原因,重点讲授我国水体污染控制技术,尤其是太湖和镇江治理水体污染的工程进度。以无锡梅梁湾的水污染为例,比较详细解释工程从科研到招标再到工程示范的全过程。以镇江内江和金山风景区为例,     

湘江水体污染治理采用BOT模式的探讨

分析了湘江沿岸城市污水处理存在的问题;讨论了BOT模式在城市污水处理行业的优点,认为该模式是一种长期的、稳定的投资模式,并论证了湘江流域采用该模式的可行性.经分析表明,采用BOT模式在湘江沿岸城市修建污水处理厂是解决湘江水体污染问题有效的途径之一.     

Improvement of oil/water selectivity by stearic acid modified expanded perlite for oil spill cleanup

Ecological disasters and economic losses resulting from oil spills have reminded us the necessity for finding an environmentally friendly, cost-effective, and available in large-scale materials to minimize the oil spill effects. The development of high oil/water selectivity mineral sorbent for the removal of oil from the water is of great interest for oil spill cleanup. In this work, highly oil/water selectivity sorbent of expanded perlite modified with stearic acid was prepared by solution-immersion processes, and the characterization of sorbent was analyzed by Fourier transformation infrared (FT-IR) spectroscopy technique. The optimized amount of loaded stearic acid (SA) on the expanded perlite surface was found to be 2.0%. Then the sorption characteristics of unmodified expanded perlite (UMEP) and stearic acid modified expanded perlite (SMEP) were tested. The effects of different particles size, oil/water volume ratio and sorption simulated condition were investigated. It was found that expanded perlite modified with stearic acid could adsorb selectively oil from water in oil/water system. The maximum oil/water sorption ratio of SMEP was 46, which was about 191 times that of UMEP (0.24) in studied experimental range. The FT-IR analysis demonstrated the presence of long-chain alkyl group in the SMEP samples, which played an important role in oil/water selectivity of SMEP samples. The equilibrium were tested with Langmuir and Freundlich isotherm models, and oil sorption process of SMEP showed good correlation with the Langmuir isotherm model.     

浅谈洪涝期间水体污染与饮水安全

铁路是洪涝灾害侵扰的重灾区。洪涝期间,水体最易受到含有病原菌、病毒、寄生虫卵和有机物等人畜粪尿、污水的污染,预防介水传染病流行和确保饮水卫生安全,成为洪涝期间确保铁路运输生产安全和铁路职工家属身体健康的重要任务。     

环境矿物材料在土壤、水体、大气污染治理中的利用

环境矿物材料是一种能自发净化污染物的特殊矿物材料,这类材料有些是天然存在的,有些是人工加工的,其共同特点除了污染净化功能外,还包括了易于取得、设备简单、成本低廉等特点。这类材料对土壤污染、水体污染和大气污染都能发挥极好的净化效果,本文将从这三方面对环境矿物材料的特点和应用进行分析,希望能令其在未来得到更高效、广泛的应用。