海绵铁处理洗浴废水中LAS的试验研究

研究了以海绵铁对洗浴废水中阴离子洗涤剂十二烷基苯磺酸钠(LAS)的处理。静态实验结果表明,在铁锰比为6∶1、反应时间为60min时,海绵铁对洗浴废水中LAS的处理效率可达83%以上。动态实验结果表明,LAS含量为4.3mg/L的洗浴废水,以4L/h的流量经海绵铁柱处理后,LAS去除率可达94%以上。     

闪锌矿常压酸浸含硫气体排放量控制研究

采用铁闪锌矿常压直接酸浸制取硫酸锌、研究了浸取条件对气体硫化物排放量的影响。试验结果表明:浸取时硫酸浓度为20％～40％(m),温度为120～140℃,液固比为(4:1)～(8:1)(m),通氧速度为35～50cm~3·(min.dm~3)~(-1),含硫气体排放量最低,常压酸浸2h,锌的一次浸取率达90％以上,闪锌矿中的硫绝大部分转化为单质硫。     

氧化铁系脱硫剂在移动床中脱除SO2的实验研究

分析了移动床和固定床吸附特性，认为移动床具有床层利用率高，空速大，可连续的优点，由实验确定了移动床适宜空速和固体物料流量。经１０３９小时运行，证实移动床的脱硫率，硫容均令人满意，床层利用率可达９５％。     

地热水除铁除锰工艺研究

通过对地热水的特点及其用途的分析 ,阐述了地热水除铁除锰机理 ,采用曝气充氧、天然锰砂接触氧化的除铁除锰工艺 ,并适当控制反冲洗强度和时间 ,使处理后地热水含铁、锰浓度达到标准 ,且不增加有害成分或减少有益成分。设备投资省、运行成本低 ,热损失小 ,是一种理想的地热水除铁工艺。     

利用绿矾开发超细氧化铁颜料的研究进展

硫酸法钛白副产物硫酸亚铁可用于制备细氧化铁颜料，该文主要评述利用绿矾开发超细绿化铁颜料的净化方法，颜料制备及其工艺条件对粒子形态的影响，认为此法既有利于环境保护，又能为废为宝，值得介绍推广。     

Removal of petroleum tar from bird feathers utilizing magnetic particles

A previously reported acute temperature dependency for the effective removal of tarry residue from feather clusters, utilising magnetic particles, has also been demonstrated to occur for the plumage of whole birds, whereby a maximum removal of up to 96% may be achieved. The experimental design allows an approximate equilibrium constant, for the distribution of contaminant between the residue and the magnetic particles, to be estimated at each temperature. This allows the thermodynamics of the process to be examined via application of the van't Hoff equation, suggesting an explanation for the phenomenon.     

Microscopic structure of soil Fe-Mn nodules: environmental implication

The internal structure, iron and manganese distributions of Fe-Mn nodules from imperfectly drained soils of central Greece were studied by scanning electron microscopy (SEM) and elemental analysis. Nodules exhibited a differentiated structure with discontinuous concentric rings as expression of their redox history. Fe and Mn have shown distinct repartition and were distributed mainly in concentric bands. The microstructure and the arrangement of iron—manganese compounds reflect the periodical development and the relative slow accretion rates of the studied nodules. These properties provide ample opportunity for adsorption and isolation of heavy metals from the soil system.     

Highly efficient photodegradation of the pesticide metolcarb induced by Fe complexes

Here we show the efficient photoinduced degradation of the pesticide metolcarb, in less than 400 min, using iron(III) aquacomplexes and 365 nm light. The degradation is mainly due to the formation of hydroxyl radical. It was complete when molecular oxygen was present. The analytical study gives evidence for the primary formation of several byproducts formed from 1) the scission of the O–C bond, 2) the hydroxylation of the aromatic moiety and 3) the attack of the two methyl groups. Under prolonged irradiation and in aerated solutions, efficient mineralization was evidenced by the study of total organic carbon evolution as a function of irradiation time.     

进一步保持和发扬我党的"真正优势"

本文在全面论述邓小平同志关于"共同的理想"和"铁的纪律"是我党"真正优势"光辉论断的基础上,指出目前我们在保持和发扬"真正优势"方面存在的不足,并认为中国共产党要顺利解决"两大历史性课题",必须进一步保持和发扬自己的"真正优势".     

难降解混合化工废水预处理试验研究

对某化工开发区混合化工废水进行预处理试验研究，分别对铁还原后加中和混凝沉淀以及直接中和混凝沉淀两种预处理方法进行了试验，重点讨论了铁还原工艺的各种影响因素。研究了曝气与不曝气，加炭与不加炭以及不同CODCr、不同pH值对铁还原处理效果的影响，并考察了铁的消耗与废水中铁离子的作用及变化情况。