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oxygen-consumed organic matter
相关语句
  相似匹配句对
     oxygen isolation;
     氧的隔绝;
短句来源
     Chemical Oxygen Source
     化学氧源
短句来源
     g~(-1) and high oxygen content.
     g~(-1),具有较高的氧含量。
短句来源
     The lnteraction of L-arginine and Oxygen Radicals
     左旋精氨酸与氧自由基的相互作用
短句来源
     Bioinorganic Chemistry of Oxygen(Ⅰ)
     氧的生物无机化学(一)
短句来源
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The so-called "Jing-Shan-Mon borderland" energy industrial area is situated between Shanxi and Shaanxi Provinces and Inner Mongolia Autonomous Region. The middle reaches of the Yellow River are located in the region. With an total area of 54 000km2, it is one of the major energy industrial bases in China. Coal. oil, natural gas and other natural resources are distributed widely in this borderland area. Yet, owing to the misuse of these resources, the environmental pollution is quite serious recently. In this...

The so-called "Jing-Shan-Mon borderland" energy industrial area is situated between Shanxi and Shaanxi Provinces and Inner Mongolia Autonomous Region. The middle reaches of the Yellow River are located in the region. With an total area of 54 000km2, it is one of the major energy industrial bases in China. Coal. oil, natural gas and other natural resources are distributed widely in this borderland area. Yet, owing to the misuse of these resources, the environmental pollution is quite serious recently. In this paper, air. water and waste solid pollution and its control planning are discussed. The control of the concentration of pollutants in atmosphere and in river water by 2000 and 2010 years are also discussed.Discharge of waste water in 1990 amounted to 1700×104 tons. of which 44. 8% was by electrical power industry. 17. 0% by chemical industry and 12. 7% by textile industry. The water of the Yellow River is seriously polluted. The major pollutants are suspended substances. oxygen-consuming organic matter and oils. The content of suspended substances is over 100% more than national standard, and is rising. The oil pollutant exceeds the standard by 60% - 100% and mercury is over 5. 7%.The emission of waste gases from various plants and urban areas are the main source of air pollution. The annual amout of waste gases is 132. 4×104m3. The electrical power industry has a high emission of waste gases which accounts for 34. 7% of the total, and chemical industry has 14. 4% .In residential and industrial areas. the average suspended particles are different. The concentration of total suspended particles is 0. 69 mg/m3 in residential areas 0. 947 mg/m3 in industrial areas. but only 0. 202 mg/m3 in clean areas. The quantity of industrial solid waste directly released is 370×104t, of which 75% is from coal mineral wastes. This amout reaches 17% of the total of the Country.The selection of the targets for environmental improvement is concentrated in the areas with major resources and for the main pollutants. The COD in the water and SO2 in the air are chosen as main pollutants. The treatment of industrial waste water should reach 45% - 50%, and the recycling amount of industrial used water should make up more than 50% - 50%. 70% of urban used water should be treated.In the past, the atmospheric pollution in the area was not strictly controlled. The reduction of waste gases and SO2 emission will have great effects. It is required that the concentration of SO2 in atmosphere in most parts of this area should be kept at a lavel of national third standard.

本文对晋陕蒙接壤区三角地带13个市县(旗)环境污染现状进行了评析,按照21世纪能源供需状况和区域经济发展规划,以及对环境的影响程度,就该区的环境发展趋势和废水和固体废弃物的排放量作出预测,并提出保证经济持续发展的环境保护目标。

Based on the monitoring data of water quality at provincial boundaries in the Yellow River Basin for 1999, the methods of single factor evaluation and pollution index calculation are used for analysis of water environment quality and characteristics of water pollution at the provincial boundaries. The result shows that a large part of boundary river sections are polluted in varying degrees, that the water body functions are decreased, and that the main pollutants are oxygen consuming organic matters....

Based on the monitoring data of water quality at provincial boundaries in the Yellow River Basin for 1999, the methods of single factor evaluation and pollution index calculation are used for analysis of water environment quality and characteristics of water pollution at the provincial boundaries. The result shows that a large part of boundary river sections are polluted in varying degrees, that the water body functions are decreased, and that the main pollutants are oxygen consuming organic matters.

根据 1999年省界水体水质监测资料 ,采用单因子评价及污染指数计算等方法 ,评价分析了黄河流域省界水体环境质量状况及水污染特点 ,结果表明 :大部分省界河段受到程度不同的污染 ,水体功能降低 ,主要污染物为耗氧有机物。

 
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