污染物

Photocatalytic oxidation used for degrading and mineralizing organic contaminants is a promising technology of wastewater treatment.

光催化氧化能降解直至矿化多种有机污染物，是一种极具应用前景的水处理技术。

Advanced Oxidation Process for wastewaters treatment is the reaction characterized by -OH radical oxidating and mineralizing all sorts of pollutants in aqueous solution.

水处理高级氧化技术其本质是利用羟基自由基氧化降解水相中的各种污染物的化学反应。

Due to food pressure, grain product in the western Jilin Province will be enhanced in the near future. Farmland areas in the area will be decreased slowly in the near future, but with the technique development of irrigation establishment, paddy areas and utilization amount of fertilizer and pesticides will be increased rapidly. So, the NPS pollution from farmland will be more serious. The main lakes in the areas such as Moon Lake and Qagan Lake have been polluted by N and P, and the content of salt in the Nenjiang River has been increasing since last 30 years. All of these show that the negative effects of NPS pollution in the area have been serious and should not be neglected by the scientific research and corresponding government management. To deal with the contradiction of agriculture development and water pollution, the trend of increasing paddy area and using amount of fertilizer, pesticide and herbcide in the western Jilin Province should be controlled. Also, the drainage of return flow from paddy should be controlled and return flow should be disposed with ecotechniques by use of the large areas of lakes and mires in the area. Through these measures, the quality of surface water could be protected and the degeneration of ecoenvironment in the area could be contained.

我国由于粮食压力，未来吉林西部的粮食生产还将进一步加强，随着种植业结构的调整，垦殖率会略有下降，但随灌溉设施的建设与完善，水田面积将进一步扩大，化肥、农药的用量还将快速增加，农业活动引起的非点源污染将更加突出，而研究区的主要湖泊月亮湖、查干湖目前已达中等富营氧化水平，嫩江水质的咸化趋势明显，因此农田非点源污染物的流失及其内流区外流化面积的增加对地表水体富营养化、咸化的作用愈来愈明显，农田非点源对地表水水质的影响已不容忽视，应引起社会的关注，为协调农业发展与水污染这一矛盾，吉林西部应遏制化肥、农药施用量增长过快和水田过度开发的势头，控制洗盐回归水的排放量，利用区内广泛分布的大量泡沼对农田径流和回归水进行生态处理，既保护了地表水的水质，又有利于生态环境的改善。

Certain air pollutants become more reactive and form noxious compounds in photochemical reaction s.

某些空气污染物在光化学反应中变得活性更强，形成有毒的化合物。

Certain air pollutants become more reactive and form noxious compounds in photochemical reactions.

某些空气污染物在光化学反应中变得活性更强，形成有毒的化合物。

Certain air pollu tan ts become more reactive and form noxious compounds in photochemical reactions.

某些空气污染物在光化学反应中变得活性更强，形成有毒的化合物。

About 74.6% of soluble organic substance was degraded in the lower 40 cm of media, while most ammonia was nitrified in the upper media.

生物量和生物活性的大小对污染物的沿程去除率影响较大，74.6%的有机物在进水端40cm厚的填料层内得到降解，而氨氮（NH+4-N）的硝化集中在上层填料层内。

There are currently few studies published in China, although it is the largest producer of chlorinated paraffins in the world.

短链氯化石蜡作为一类新型持久性有机污染物已经引起全球的关注，我国是氯化石蜡第一大生产国，但对其研究还处于起步阶段。

Short chain chlorinated paraffins are one new kind of extremely complex persistent organic pollutants and have attracted extensive concerns worldwide.

短链氯化石蜡作为一类新型持久性有机污染物已经引起全球的关注，我国是氯化石蜡第一大生产国，但对其研究还处于起步阶段。

Short chain chlorinated paraffins ; persistent organic pollutants; determination method

短链氯化石蜡；持久性有机污染物；分析方法

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。