污染地

The research progresses in degradation technologies of benzene or some of its derivatives in water are reviewed.The macroscopical reaction mechanism of HNO2(NO2-)and C6H5Br in aqueous solution has been studied.Different influence factors have been discussed,including different pH condition,initial concentration,irradiation time,different anions and the optimization of experimental conditions.By using liquid chromatography,the degradation rate of bromobenzene has been qualitatively analyzed.The concentration variations of Br~and NO2- have been analyzed by using ion chromatography.

本文介绍了苯及其衍生物对水环境所造成的污染和危害，研究了365nm光照下HNO2(NO2-)与C6H5Br混合溶液的宏观反应过程，初步考察了混合体系中溴苯的降解及衰减行为，较为系统地探讨了影响溴苯降解过程的各种影响因素，包括溶液的pH值、初始浓度、光照时间、不同离子的影响以及实验条件的优化，并利用液相色谱法进行定量研究溴苯的降解率，利用离子色谱法分析检测实验过程中溴离子和亚硝酸根离子的变化。

It is changeover of straw utmost ground heat energy on one hand, use at generating electricity; on the other hand, put an end to 2 pollution that process of farmer combustion straw produces, can increase farmer income at the same time, what straw lights catenary furnace to arise continuously is cindery can serve as efficient farming fertilizer.

一方面将秸秆最大限度地转换为热能，用于发电；另一方面，杜绝农民燃烧秸秆过程产生的二次污染，同时可增加农民收入，秸秆直燃链炉产生的灰烬可作为高效农肥。

The invention discloses a synthetic using method of smelting high-furnace dust, which comprises the following steps: grinding the high-furnace dust with 1.5-15% zinc; proceeding magnetic cobbing; reclassifying to obtain the refined ferric ore; disposing ore tail through waste acid of titanium dioxide with 15-30% sulphuric acid; transmitting the zinc oxide in the solution at zinc sulfate pattern; separating solid and liquid solution through lime; obtaining refined zinc ore through S2-, CO32-, HCO3- ion; floating the immersed slag through neutral oil.

一种炼铁高炉炉尘资源综合利用的方法，含锌1.5％～15％的高炉炉尘经磨矿、磁选、重选回收铁矿物获得铁精矿，选矿尾矿用含硫酸15％～30％的钛白废酸处理，使其中的氧化锌以硫酸锌的形式转入溶液中，固液分离得出的溶液用石灰中和除铁后，再用S2-、CO32-、HCO3-离子沉锌获得锌精矿，浸出渣用中性油浮选获得炭精矿。该方法将钛白废酸和高炉炉尘结合在一起，使之成为互为所需的原料和试剂，有效地将两种废弃物变成了有价资源，较好解决了环境污染问题，同时又能产生好的经济效益。

The kinetic model of membrane fouling is in good agreement with experimental results of crossflow UF operation under different transmembrane pressure and shear rate.

不同操作条件下，本研究建立的横向流超滤膜污染动力学模型能很好有效地预测通量随时间的变化。

The habitat condition was more diversifiable and complicate.

河口上游区域的大面积围垦造地及环境污染是降低底栖动物食性功能群多样性的主要原因，缺乏杂食和碎屑食者，且肉食者物种很少，说明了区域生境破碎化明显，导致营养源的减少以及食物链的简单化。

Quantitative expression and effect of combined pollution of heavy metals and polycyclic aromatic hydrocarbons, including phenanthrene, fluoranthene and benzopyrene, on soil enzyme were investigated during 7 weeks of incubation.

以土壤脲酶和脱氢酶为探针物质，室内培养条件下较为系统地研究了重金属和多环芳烃复合污染对土壤酶活性的影响及其定量表征。

The bin would be even fuller and fouler had the London dumping convention not been signed in 1972, but the sea is still hideously polluted.

如果不是1972年签署伦敦倾倒协议，这个垃圾箱甚至将装得更满、更加污秽，但是海洋仍然被严重地污染着。

Although the quality of day lily of Qingyang city is best in the whole country, the day lily is planted fragmentarily at the residence, roadside, bank of the canal, low bank of border, and district of field, and also do not form the best product region and suitable planting technology. The product region environment condition of day lily in Qingyang city was analyzed from2001 to 2005, the advantageous product regions of day lily in Qingyang city was planned, and planting technology of day lily was studied. The main result of study were as follows:First. Qingyang city belongs to dry agricultural region, its solar radiation is quite rich, but the water resources is short in all district, the agricultural production depends on the natural precipitation.

生产的黄花菜质量在全国名列前茅，但是庆阳的黄花菜多在宅旁、路边、渠岸、田边地埂等零星地进行生产，没能形成优势产区，对栽培技术研究也较少。2001年～2005年我们分析评价了庆阳市黄花菜产区环境，进行了黄花菜优势产区区划和旱作栽培技术研究，主要研究结果如下： 1 庆阳市太阳辐射比较丰富，水资源缺乏，农业生产靠天然降水，属旱作农业区，河流大部分水质较好，灌溉水源基本未受到污染。

Furthermore, the foul air can literally stunt the growth of the next generation, according to recent research from Frederica P. Perera of Columbia University and her Chinese colleagues.

而哥伦比亚大学的弗雷德里卡·佩雷拉和她的中国同事的最新研究表明，污染的空气将会真正地阻碍下一代的生长发育。

Geostatistics; GIS; soil heavy metal; potential ecological threat; pollution load; space structure characteristic; early warning; Harbi

吉林大学；康彩霞地统计学； GIS；土壤重金属；潜在生态危害；污染负荷；空间结构特征；预警；哈尔滨

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。