玻璃纤维袋除尘器在水泥厂的应用

介绍玻璃纤维袋除尘器在水泥厂立窑中使用时存在的问题和解决办法，供选用玻璃纤维袋除尘器的水泥企业参考。     

酸性火山玻璃的脱玻化作用

本文阐述了酸性火山玻璃发生脱玻现象后的X射线衍射特征、镜下(偏光及扫描电镜)特征和形貌特征,重点讨论了对酸性火山玻璃脱玻化途径有重要影响的网络结构因素和化学成分因素,最终提出酸性火山玻璃的五种脱玻化途径及相应产物:SiO_2±H_2O纯架状、架状网络→“石英”质;SiO_2+Al_2O_3+H_2O±其它成分架状、层状网络→“伊毛缟石”质;SiO_2+Al_2O_3+K_2O(Na_2O,CaO)架状、层状网络→长石质;酸性火山玻璃(含不同的挥发份)架状、层状、链状网络→粘土质及其它可能的产物;SO_2+Al_2O_3+K_2O(Na_2O)+CaO、FeO、MgO(群聚?)等土挥发份层状、链状网络→绿泥石、辉石、闪石。     

空心玻璃微球附载TiO2清除水面漂浮的油层

以空心玻璃微球为载体，采用浸涂法制备出ＴｉＯ２／ｂｅａｄｓ光催化剂．研究了利用ＴｉＯ２／ｂｅａｄｓ光催化剂降解水面漂浮的正十二烷及甲苯的可行性．结果表明，３７５Ｗ中压汞灯照射１２０ｍｉｎ，正十二烷的光催化去除率达９３．５％，光照８０ｍｉｎ时甲苯被完全光催化去除；通入空气有利于正二十烷及甲苯的光催化去除，外加微量的Ｈ２Ｏ２（５．０ｍｍｏｌ／Ｌ）可大大提高光催化去除率，向反应液中加入少量Ｎａ＋对正十二烷及甲苯的光催化去除率无明显的影响．     

高性能水刺玻纤复合滤料性能的研究

通过实验对比水刺类与针刺类玻纤复合滤料的机械性能、过滤性能，阐述了针刺玻纤复合滤料存在的缺陷及水刺玻纤复合滤料的技术优势。     

玻璃纤维负载P25光催化接触氧化活性艳红X-3B

在玻璃纤维上焙烧P25制备了负载型TiO2光催化剂,探讨了焙烧温度对催化活性的影响,设计了光催化接触氧化反应器,并以活性艳红X-3B为模型污染物,考察溶液pH值、共存阴离子(CO₃^2-、SO₄^2-、Cl-)对光催化反应的影响.结果表明,焙烧温度直接影响负载后催化剂的活性,300℃负载时活性最高,SEM照片显示此时P25与载体结合牢固、负载颗粒均匀.酸性条件对活性艳红X-3B的降解有利,当溶液初始pH由2.0上升到10.0时,活性艳红X-3B的降解率从90.06%下降至42.71%.共存的CO₃^2-、SO₄^2-对活性艳红X-3B降解的影响不大,但Cl^-对氧化过程有明显的抑制,使活性艳红X-3B的降解率下降17.03%.利用成熟的光催化剂P25,通过烧结的方法制备负载型催化剂是当前替代粉末催化剂的较为可行的方案.     

Phototransformation of chlorimuron-ethyl on leaf surface

Chlorimuron-ethyl, a post-emergent herbicide selectively used in soybean and maize, degrades mainly through chemical hydrolysis. Photolysis has also an important role in the degradation of this compound. Phototransformation of chlorimuron-ethyl takes place through the cleavage of the sulfonylurea bridge, dechlorination, de-esterification and cyclization. Enzymatic de-esterification usually takes place in plant system to liberate the free acid, chlorimuron, which, in fact, inhibits the acetolactate synthase enzyme. In the non-enzymatic environment, de-esterification generally does not occur at normal pH and in moisture-free medium. But on the leaf surface of maize crop de-esterification of chlorimuron-ethyl takes place. The moisture deposited on leaf surfaces by virtue of evapo-transpirational loss of water may cause the de-esterification of chlorimuron-ethyl to the free acid, chlorimuron.     

玻璃熔窑烟气脱硫技术现状及分析

通过对玻璃熔窑烟气污染物排放情况的分析，结合国务院颁布的《排污费征收管理条例》的实施，提出脱硫治理的必要性，在阐述目前烟气脱硫技术的基础上，对脱硫技术在国内玻璃熔窑烟气治理中的应用及研究现状进行分析，提出烟气循环流化床（CFB FGD）同时脱硫脱氮技术的应用前景。     

再生水甲醇投加成本运算

再生水资源是水资源的一种特殊形式,它的价格是影响污水回用的重要因素之一。再生水价格有多种形式,其中甲醇的投加是一笔不小的成本。以污水处理厂二级出水为水源进行深度处理以实现污水资源化的过程中,存在着总氮含量高、有机物含量低的水质特点。再生水处理中反硝化阶段需要有机物,也就是碳源。碳源影响脱氮效果,投加甲醇为外碳源可以促进反硝化水平。     

Using Bacteriophages in Recycled Water Exposure Assessment Studies

Bacteriophages MS-2 and PRD-1 were used as indicators of human viral behaviour in a series of turf-grass irrigation and washing machine experiments to provide information about the level of human exposure to potential residual enteric viruses in recycled water that can affect health. Results provided evidence to support a potential inadvertent exposure volume of 0.01 ml for recycled water used for machine clothes washing. Results for irrigation experiments showed that a one log reduction in bacteriophage numbers on turf-grass was not achieved under exposure to high solar conditions after 4 h. Experimentation showed that bacteriophages may be usefully employed in exposure assessment studies based on the ease of their enumeration and logistical and cost considerations. In terms of future studies, observed differences in individual bacteriophage characteristics provide a rationale for using multiple viral indicators. However, limitations on the utility of bacteriophage also need to be considered.     

衡量法自校验实验室常用玻璃量器的程序与效果

玻璃量器所标示的容积与其真实容积之间都有误差,将影响检测结果的可靠性。进行自校验既可保证检测结果的可靠又不影响检测工作的正常运作。文章采用衡量法对常用的玻璃量器进行了自校验,容量误差在国家规定的允差之内的才能用于样品检测,保证了检测结果的准确度和精密度。经过自校验,计量认证和实验室认可的未知样测定都能顺利通过,项目的校准曲线经常能做到相关系数R≥0.999 99。