黄尾密鲴在苏州重污染水体放养试验研究

采用生物操作技术,在苏州重污染河道里放养黄尾密鲴以改善重污染水体水质。不仅进行了静态试验,而且在苗家河开展了示范区研究。结果表明:黄尾密鲴单位体重(g-1)的好氧量为0.339mg/(L·h),窒息点仅为0.25mg/L;黄尾密鲴在浮圈中主要摄食悬浮有机物,其占食物总量的79.74%;静态试验和现场试验均表明黄尾密鲴24h都在摄食,日食率可达到50%以上。     

关于长江水资源保护问题

通过具体的数据资料说明了目前长江水资源已遭受污染的情况,分析了长江主要被污染的河段及其污染的特性,提出了治理长江污染的原则,在此基础上提出了保护长江的策略:建立、健全水资源保护法规,加强监督管理;紧密结合流域规划和经济发展规划,制订和实施流域及重点地区的水资源保护和污染防治规划;控制岸边污染;预测污染负荷并制订预防对策;加强监测以及时发现问题;开展水资源保护重大课题的科研工作。     

污染水中营养物质去除的新技术探讨

从廉价高效的角度出发，介绍了三种去除污染水中N、P等营养物质的新技术：渗透性反应墙、人工湿地、水生附着物-鱼系统，并简要分析了其存在的问题及发展前景。希望通过这次探讨，为污染水净化提供一种新思路。     

新沂河污水资源化生态工程可行性研究

新沂河污水资源化生态工程是以蔷薇河送清水工程为依托 ,将新沂河北偏泓作为排污专道 ,排污专线可构建成为五级河道稳定塘。其技术路线是控源导流 ,清污分流 ,通过河道稳定塘来自然降解城市污水。本文以科学的预测数据论证了工程的可行性。     

一种处理熟料造纸厂污水的新方法

研究了采用适量的硫酸铝和一种助凝剂复配，利用絮凝法处理ＣＯＤｃｒ为１０００ｍｇ／ｄｍ＾３以上的废纸造纸污水，实践证明，除污效果明显，处理后的污水可以达到排放标准。     

改进的灰色变权聚类法在水质评价中的应用

本文以灰色系统理论和模糊数学理论为基础，改进了传统灰色聚类法隶属函数的构建模式，通过扩充函数的取值区间，变更函数型式，保证了评价信息的完整性和精确性；通过修正污染因子权系数的标定模式，既考虑各因子在不同污染级别中作用的不同，同时也充分考虑各因子各自在不同污染级别中的权重不同，把二者相结合，进行权系数标定，提高了评价的准确性和分辨率。     

低温条件下陶粒滤池生物膜特性研究

针对官厅水库下游三家店水库水源进行生物陶粒滤池预处理的现场试验 ,研究低温条件下生物陶粒滤池的微生物学特性。试验结果表明 ,随温度降低生物陶粒滤池去除污染物的效果下降主要是由于陶粒表面微生物活性随温度的降低而下降造成的。陶粒表面的微生物量也随温度的降低而减少 ,但是受影响的程度比微生物活性小得多。陶粒表面的微生物活性与生物量沿水流方向呈明显的下降趋势     

紫花苜蓿在柴油污染土壤中的萌发状况

选择以柴油作为土壤污染物，以单-外源环境因子污染水平为主要调控因子，采用室内盆栽试验的方法并且以不同质量分数的柴油污染土壤，在此情况下观察不同土壤柴油污染质量分数控制下紫花苜蓿种子的萌发与生长情况。结果表明，紫花苜蓿种子发芽抑制率与土壤柴油污染质量分数呈现指数线性相关关系，并且发现苜蓿发芽之后，高质量分数柴油处理组的幼苗出现黄叶和干枯现象。文章最后从土壤内柴油和柴油在土壤-大气界面间的迁移对种子萌发的影响进行了探讨。     

Measurement of hydrogen peroxide and organic hydroperoxide concentrations during autumn in Beijing, China

Gaseous peroxides play important roles in atmospheric chemistry. To understand the pathways of the formation and removal of peroxides, atmospheric peroxide concentrations and their controlling factors were measured from 7:00 to 20:00 in September, October, and November 2013 at a heavily trafficked residential site in Beijing, China, with average concentrations of hydrogen peroxide (H₂O₂) and methyl hydroperoxide (MHP) at 0.55 ppb and 0.063 ppb, respectively. H₂O₂ concentrations were higher in the afternoon and lower in the morning and evening, while MHP concentrations did not exhibit a regular diurnal pattern. Both H₂O₂ and MHP concentrations increased at dusk in most cases. Both peroxides displayed monthly variations with higher concentrations in September. These results suggested that photochemical activity was the main controlling factor on variations of H₂O₂ concentrations during the measurement period. Increasing concentrations of volatile organic compounds emitted by motor vehicles were important contributors to H₂O₂ and MHP enrichment. High levels of H₂O₂ and MHP concentrations which occurred during the measurement period probably resulted from the transport of a polluted air mass with high water vapor content passing over the Bohai Bay, China.     

LAND SURFACE PARAMETERIZATIONS OF GCMs AND MACROSCALE HYDROLOGICAL MODELS1

ABSTRACT: Climatic variation and the possibility of anthropogenically-caused climatic change have emphasized the need for global hydrological cycle models able to simulate the impacts of climate on the atmosphere, continents and oceans. To date, global atmospheric and oceanic models have been developed but, to the best of the author's knowledge, there are no continental hydrological models. Instead, hydrological models continue to develop at the catchment scale and the land phase component of the global hydrologic cycle is modeled as parameterizations within atmospheric models. The author argues that this is not the best solution; that the present land surface components of atmospheric models do not accurately model land phase hydrology and that, instead, atmospheric and oceanic models should be linked to continental-scale hydrological models to form a true model of the global hydrological cycle.