水质污染

In some cases, some metals in sediments could be released into the overlying water, causing second pollution, and become a"chemical bomb"hiding under lake water.

另外，在一定条件下，沉积物中部分金属元素也可再次向上覆水体释放，造成"二次污染"问题，严重威胁到湖泊／水库的水质安全，成为埋藏在湖泊深处的一颗"定时炸弹"。

The disinfection effect on joint applications of potassium permanganate with chlorine or chloramine, and the effect on major factors of water quality are carried out systematically in the study of enhanced disinfection. The monitoring index of total count of bacteria and total coliforms group, and the water samples of prepared in laboratory and of polluted water are applied.

在强化消毒的研究中，分别以实验室配水和受污染的水为试验水样，以总大肠菌群和细菌总数为检测指标，系统研究了高锰酸钾与氯或氯氨联用消毒作用及主要的水质参数对消毒效果的影响。

Are China's urban water supply and the mainstream of traditional disinfection methods, and more and more studies have shown that, in the face of heavier pollution, excessive use of chlorination methods will instead have a negative impact on water quality and safety.

是中国的城市供水和传统的消毒方法的主流，越来越多的研究表明，在重污染面前，过度使用氯化方法将改为对水质安全的负面影响。

According to the source,character and using intention,as well as the site rules of Pingmei Group mine drainage,different water treatment technologies are adopted to clean the wastewater and at the same time a special water supply system is selected,which transports cleaned water dividedly on the whole and collectedly in the part,so the water resource is not only fully utilized,the environment is protected,but also the cost is lowest.

针对这种同一矿区既水满为患，又水贵如油的局面，为治理污染改善环境，根据矿井水的性质和特点，开展综合利用研究是非常必要的。1矿井排水水质特点根据集团各矿井排水的

Therefore corresponding pesticide management practices and water and soil losses prevention and cure measures were good for the water quality controlling. Fertilizer utilization, logging and steeper topographty of woodland which vulnerable to corrasion, excessive feed for fishery, stock raising waste, living pollution and the layout of industry caused the change in nitrate concentration.

硝酸盐氮的变化主要来源于农业上化肥的使用、林业采伐引起水土流失的增加和林地本身坡度较大易于引起水土流失、渔业饵料的过度投放、养殖业畜禽废弃物的排放、生活污染的排放和工业生产布局（区别与工业产值密度的相关性，工业产值则更倾向于工业布局对水质的影响）。

A case study shows that the optimal waste load allocation can achieve water quality standards in stochastic conditions, and the model's outcomes are clearly different from those of the conventional deterministic linear programming model.

研究结果表明，污染负荷优化分配结果能够满足随机条件下的水质达标率要求，并且与传统的确定性线性规划模型的分配结果相比有着明显差别。

The results are of importance to the water quality administration and pollution control in the Yangtze River estuary.

实验分析结果有助于长江口及临近海域富营养问题的研究，对长江口水质管理、污染控制具有指导意义。

The research result suggests that the water quality of this area could be delimited to eutrophic type.

结果表明，目前该水体明显受到有机污染，水质可初步划定为富营养型。

Environmental quality and pollution monitoring mainly includes the water quality monitoring and air and exhaust gas quality monitoring.

环境质量和污染监测部分主要包括水质监测和大气和废气监测。

In recent years , with common people improvement of living standard , build holiday village , school , trader live in floor district , new high-tech enterprise along the bank, demonstrate the good development prospect.

但是，由于在建设过程中的环境整治不够配套，宝圣湖的水质出现了较为严重的污染现象，极大地损害了这一区域的环境质量，既影响了周边群众的工作和生活，也有损于当地招商引资的形象，制约了经济的可持续发展。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。