锅炉除尘脱硫及其废水回用系统的经济损益分析

以燃煤锅炉掺烧固硫除尘脱硫及其废水回用系统为研究对象，利用环境系统费用效益分析方法，分析了该系统的环保投入和取得的环境效益。结果表明：对燃烧高硫煤的８０ｔ／ｈ规模的锅炉房，环保费用的现值为３１２６万元，环保效益的现值为９７２９万元，费用与效益之比为１∶３１１。结果说明锅炉掺烧固硫除尘脱硫及其废水循环技术具有很好的经济效益。该分析方法和结果为燃煤锅炉除尘脱硫工艺方案的选择和系统的优化研究提供了基础。     

煤矿矿井水除铁技术

本文从煤矿矿井水中铁的来发布和存在形式入手，剖析了接触氧化过滤除铁的机理，从曝气充氧方式，滤料选择，反冲洗条件及其参数确定等方面介绍含铁矿井水接触氧化除铁的技术关键，并结合工程实际证明该工艺技术的可行性和可靠性。     

催化动力学光度法测定痕量铈

根据前量铈在稀硫酸介质中对重铬酸根氧化ＥＤＴＡ而褪色的反应有催化作用，建立了测定痕量铈的新动力学光度法，测定范围为０￣２．４×１０＾－２μｇ／ｍＬ，检限限为５．２×１０＾－１０ｇ／ｍＬ，用于测定人发中的痕量铈，结果满意。     

模拟酸雨对浙东北红壤中盐基离子和铝的淋失影响研究

通过对浙江省东北部杭州至宁波地区两个红壤剖面的模拟酸雨淋溶实验研究表明，随着时间的延续，盐基离子的淋失浓度会在某一时期出现一个峰值。该峰值的出现与酸雨的ｐＨ值并不简单相关，Ａｌ＾３＋的淋失浓度只是在酸雨ｐＨ值＝２．５左右才显增高并在淋出液ｐＨ＝４．０时有一个阈值，经ｐＨ＝２．５－３．０模拟酸雨１０余年降水量的淋溶，红壤中淋出液的ｐＨ值下降不超过０．８。     

川西北哲波山微细浸染型金矿床岩浆岩特征

对川西北哲波山金矿区内出露的中 -酸性岩脉、岩株的类型、化学成分、地质特征以及微量元素、同位素、稀土元素等特征进行了研究 ,指出印支晚期和燕山早期的岩浆岩均属钙碱质岩系列 ,均起源于幔壳混源区 ,原始岩浆在成分上和演化上又存在着一定的差异性。岩浆岩为成矿提供了一定的物质基础。     

Hydrogen storage and distribution systems

Hydrogen storage and transportation or distribution is closely linked together. Hydrogen can be distributed continuously in pipelines or batch wise by ships, trucks, railway or airplanes. All batch transportation requires a storage system but also pipelines can be used as pressure storage system. Hydrogen exhibits the highest heating value per weight of all chemical fuels. Furthermore, hydrogen is regenerative and environment friendly. There are two reasons why hydrogen is not the major fuel of toady’s energy consumption: First of all, hydrogen is just an energy carrier. And, although it is the most abundant element in the universe, it has to be produced, since on earth it only occurs in the form of water. This implies that we have to pay for this energy, which results in a difficult economic task, because since the industrialization we are used to consuming energy for free. The second difficulty with hydrogen as an energy carrier is the low critical temperature of 33 K, i.e. hydrogen is a gas at room temperature. For mobile and in many cases also for stationary applications the volumetric and gravimetric density of hydrogen in a storage system is crucial. Hydrogen can be stored by six different methods and phenomena: high pressure gas cylinders (up to 800 bar), liquid hydrogen in cryogenic tanks (at 21 K), adsorbed hydrogen on materials with a large specific surface area (at T < 100 K), absorbed on interstitial sites in a host metal (at ambient pressure and temperature), chemically bond in covalent and ionic compounds (at ambient pressure), oxidation of reactive metals e.g. Li, Na, Mg, Al, Zn with water. These metals easily react with water to the corresponding hydroxide and liberate the hydrogen from the water. Finally, the metal hydroxides can be thermally reduced to the metals in a solar furnace.     

广东省危险废物处置设施与管理现状及对策

文章对广东省危险废物的产生与流向、处置设施建设、工艺技术、污染防治以及管理等现状及存在问题进行调查分析，针对所存在的问题，并结合规划要求，从管理、技术发展、处理处置设施建设和运营等方面提出较为系统的危险废物污染防治对策。     

影响宫山咀水库水体的藻类分布

利用水生藻类评价水体的污染情况是近年来环境监测工作的一个重要组成部分。宫山咀水库水生藻类的监测分析结果表明：水库水体呈现清洁特征，水质状况良好。     

用锅炉冲渣水为水源的湿式除尘器脱硫

通过对大连重工集团五台文丘里—麻石除尘器脱硫率的测定、各关键点pH值的测定、渣池中各金属含量的测定，说明了以锅炉冲渣水为水源进行湿法除尘，既经济又可达到稳定脱硫的目的。     

Catalytic dechlorination of chlorobenzene in water by Pd/Fe bimetallic system

IntroductionChlorinatedorganiccompoundshavebeenusedonalargescaleinthechemical,petrochemical,andelectronicindustries.Inrecentyears ,worldwideattentionhasbeengiventotheenvironmentalandhealthimpactofthemasaclassofcontaminants .Severalareknowntocauseozonedepletion ,whileothersproduceadverseeffectsonthehumancentralnervoussystemandhavebeenlinkedtodiseasessuchascancer.Almostallofthechlorinatedaromaticcompoundsaretoxicandthermallystable .Oncereleasedintoenvironment,theywillaccumulateinthesurroundings…