不同类型污染源颗粒物的粒度分布特征分析

对影响葫芦岛市城区环境质量可吸入颗粒物的各类污染源颗粒物的粒度成份、分布特征进行分析。采用斯托克直径ds(Stokes′Diameter)表示法,利用巴柯离心机对样品进行处理,得到各类排放源所排放的不同粒径的颗粒物重量百分比,为环境管理提供科学依据。     

粒子图像测速技术在往复隔板絮凝池中的应用

由于往复隔板絮凝池廊道狭窄、絮凝池拐弯水流结构复杂,致使整个流场的量测十分困难。采用了粒子图像测速技术,对其流场进行了量测与相关分析,提高了分析结果的准确性和可靠性。     

不同类型污染源颗粒物的粒度分布特征分析

对影响葫芦岛市城区环境质量可吸入颗粒物的各类污染源颗粒物的粒度成份、分布特征进行分析。采用斯托克直径ds（Stoke＇s Diameter）表示法，利用巴柯离心机对样品进行处理，得到各类排放源所排放的不同粒径的颗粒物重量百分比，为环境管理提供科学依据。     

湘东北中生代基性岩脉微量元素地球化学特征及岩石成因

湘东北中生代基性岩脉可以分为煌斑岩和辉绿岩两类 ,前者形成于 136 .6 1Ma ,后者形成于 86 .18Ma ,与华南中生代主要拉张时期相对应。岩石富集LREE ,Eu负异常不明显 ,其形成主要受地幔部分熔融作用制约。早期煌斑岩类微量元素和Sr、Nd同位素总体上具有富集地幔 (EMⅡ型 )洋岛玄武岩 (OIB)特征 ,富集Nd、P、Cs,而K、Rb、Sr、U、Th等富集程度不明显 ,Ta、Nb略有富集 ,具有软流圈地幔上涌地幔热柱玄武岩岩浆源区性质 ,表现出软流圈地幔上涌部分熔融的成岩特点。晚期辉绿岩类表现出Ta、Nb、Ti亏损 ,但LILE并不富集 ,反映地壳混染程度的增强 ,具有大陆拉张带 (裂谷初期 )形成的玄武岩岩浆源区性质 ,为岩石圈地幔部分熔融形成。二者具有不同的岩浆源区性质 ,从早期到晚期岩浆源区向上迁移并致使部分陆壳物质混入 ,反映由热点式拉张到岩石圈伸展 减薄的作用过程。     

延迟焦化复合废水处理研究

通过自由沉降和离心分离试验结果的比较，考察了加热离心分离法处理炼油厂含油焦化废水脱除固体颗粒的效果。结果表明，加热离心分离法大大改善了含油焦化废水的脱水和脱固性能，在加热到６０～８０℃时，７５％以上的固体颗粒可被脱除     

旋进型颗粒层除尘器的研究与试验

本文阐述了一种新型二级立式族进型颗粒层除尘器，它的关键技术采用独创的床外清灰及气流输送、滤料循环系统。该除尘器适用范围广、除尘效率高、成为新一代的除尘器专利产品。     

气浮过程中的界面相互作用

首先讨论了水体颗粒物的基本性质以及气泡的形成过程，而后对气液界面上胶体颗粒的吸附进行分析。其次讨论了气浮过程中，气泡与颗粒物之间的相互作用。对气泡与颗粒物之间的碰撞进行分析。结合紊流气浮的理论与应用，在气浮过程中的界面相互作用分析的基础上。设计了一种新型集成的溶气气浮水处理工艺，即逆流共聚气浮工艺，并对其运行情况进行了研究。探讨了其中的界面相互作用对气浮效果的影响，进一步与传统工艺进行了对比。     

脉动跟踪除尘技术的应用研究

针对粉粒状物料在散装发送过程中 ,容易引起粉尘飞扬的问题 ,利用现代脉动跟踪技术和表面过滤技术 ,设计研制的除尘系统 ,始终将吸尘罩与料堆扬尘点的动态相对位置控制在合理的范围内 ,实现了粉粒状物流连续自动的、环保高效作用     

Study of Pollution of the Plitvice Lakes by Water and Sediment Analyses

The process of eutrophication in form of intense plant growth has been observed in some lakes and water streams at the Plitvice Lakes National Park in central Croatia. Here we investigate whether this phenomenon is a consequence of anthropogenic pollution or due to naturally produced organic matter in the lakes. We applied chemical analysis of water at two springs and four lakes (nutrients, dissolved organic carbon (DOC), trace elements) and measurements of surface lake sediments (mineral and organic fraction analyses, trace elements) in four different lakes/five sites. The chemical composition of water does not indicate recent anthropogenic pollution of water because the concentrations of most trace elements are below detection limits. The concentrations of DOC and nutrients are slightly higher in the area of increased eutrophication-plant growth. Also the content of organic matter in the sediment is at the highest level in areas with highest C/N ratio indicating that the organic fraction of this sediment is mainly of terrestrial origin. There is no significant difference among the trace element concentration in the upper segment of all cores, deposited approximately during last 50 years when higher anthropogenic influence is expected due to development and touristic activity, and the lower part of the cores, corresponding to the period approximately 100–200 years before present. The content of trace elements and organic matter in sediments decreases from the uppermost lake downstream. According to our results there is no indication of recent anthropogenic pollution in water and sediment. Higher concentrations of DOC in water as well as phosphorus and some other elements in the lake sediment can be a consequence of input of natural organic matter to the lake water.