辽宁大伙房水库水质变化趋势研究

于1979-2003年调查了大伙房水库理化指标,对水质变化趋势进行了研究。入库和库区水体总氮、总磷含量多年平均分别为1.61mg·l-1和0.036mg·l-1;1.23mg·l-1和0.036mg·l-1,均超过国家地表入库Ⅲ和库区Ⅱ类水质标准。库区其他17项水化指标符合国家地表水库区Ⅱ类标准。大伙房水库水体只受到轻度污染,水质等级为近Ⅱ级,属浮游植物响应型中营养水体。     

分光光度法测定嘉陵江中总磷

采用美国HACH公司DR/5000紫外可见分光光度计,及其专用试剂测定嘉陵江(南充段)上游、下游水样中总磷含量.测定总磷含量(以PO3-4计)适用范围(0.06 mg/L～3.50 mg/L),精密度和灵敏度较好,准确度高,标准物质的回收率都近于100%.对于样品中存在的干扰因素进行了有效的消除.简化了实验操作过程,使测试方法更加简便、快捷、试剂用量少,该方法通过美国环保局(USEPA)认可.     

我国中小城市大气污染总量控制研究

本文提出了一套适合于我国中小城市大气污染总量控制研究的技术路线和模型。通过环境容量规划和污染综合治理规划的有机结合，从而达到以优化的方式协调经济发展与环境保护的矛盾。对镇江市的应用结果表明，本文提出的技术路线和模型是合理可行的。所给出的总量控制方案既能符合经济发展的需要，又能经济有效地控制并改善区域的大气环境质量。     

Influence of hydrogeochemical processes on zero-valent iron reactive barrier performance: a field investigation

Geochemical and mineralogical changes were evaluated at a field Fe0-PRB at the Oak Ridge Y-12 site concerning operation performance during the treatment of U in high NO3- groundwater. In the 5-year study period, the Fe0 remained reactive as shown in pore-water monitoring data, where increases in pH and the removal of certain ionic species persisted. However, coring revealed varying degrees of cementation. After 3.8-year treatment, porosity reduction of up to 41.7% was obtained from mineralogical analysis on core samples collected at the upgradient gravel-Fe0 interface. Elsewhere, Fe0 filings were loose with some cementation. Fe0 corrosion and pore volume reduction at this site are more severe due to the presence of NO3- at a high level. Tracer tests indicate that hydraulic performance deteriorated: the flow distribution was heterogeneous and under the influence of interfacial cementation a large portion of water was diverted around the Fe0 and transported outside the PRB. Based on the equilibrium reductions of NO3- and SO4(2-) by Fe0 and mineral precipitation, geochemical modeling predicted a maximum of 49% porosity loss for 5 years of operation. Additionally, modeling showed a spatial distribution of mineral precipitate volumes, with the maximum advancing from the interface toward downgradient with time. This study suggests that water quality monitoring, coupled with hydraulic monitoring and geochemical modeling, can provide a low-cost method for assessing PRB performance.     

废水除磷技术的研究与发展

目前 ,人们越来越重视污水除磷技术。本文介绍与评述了化学和生物两种除磷方式及其除磷机理和工艺 ,并着重介绍了生物除磷的现状、发展和研究动向     

Effects of uncontrolled particulate matter release on precipitation under warfare conditions

This study has shown theoretical, observed and experimental evidence of pollutants released, transported and deposited during the Kosovo conflict in 1999 and their effects on precipitation in Serbia. The greatest bombardment of the chemical industry, oil refineries and fuel storage in Serbia which occurred during April, resulted in releases of many hazardous, toxic and cancerogenic substances. The number of April's days with precipitation greater or equal to 0.1 mm in 1999 are compared to those in the period from 1961 to 1990 registered at thirty meteorological stations in Serbia and especially at the Belgrade-Observatory station in the period from 1888 to 1995. The maximums of days with precipitation greater or equal to 0.1 mm were at the wider Belgrade area and at the central and southwestern parts of Serbia during April 1999. This is confirmed by using the Eta trajectory analysis.     

脉冲供电在锌沸腾炉电除尘器上的应用

介绍了一种电除尘器脉冲供电的基本原理及其在锌沸腾炉电除尘器上的应用试验情况。结果表明，在基本保持同一工况条件下，脉冲供电比直流供电降低出口烟气含尘浓度50.4%～79.6%；脉冲供电能改善电除尘器运行性能，提高电除尘器改善系数达1.32；脉冲供电运行安全可靠。     

大气污染物总量控制方法的研究

污染物总量控制是目前我国广泛应用的一种控制区域环境质量达标的方法 ,在总量控制中 ,环境容量分配的科学化、合理化和各点浓度的合理值计算是至关重要的。本文就此做些研究 ,以确保实现从局部到区域的环境质量达标。     

常熟河网区水污染物总量控制研究

基于常熟河网原型调水实验和水功能区划，建立了感潮地区河网水量水质模型，对常熟河道水质降解系数及水环境容量进行了计算，并按照点源和面源对区域内污染源进行统计，在此基础上进行了常熟河网水污染物总量控制值和现状削减量的计算，为该地区的水污染防控提供了科学依据。     

总氮测定中的注意事项

碱性过硫酸钾消解紫外分光光度法测定总氮中，对空白值偏高的影响因素进行了实验和分析，提出了几点建议及改进措施。