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淮河流域地处我国腹地,土地和矿产资源丰富,三十多年来的治淮打下了良好的水利基础,工农业生产、航运交通和水产事业等有着很大的发展潜力。现在突出的问题是水资源不足,特別是自七十年代以来,由于水源污染日益严重,更加剧了水资源不足的矛盾。目前,本流域年径流量为50％保证率时,平均每3O吨水中就有一吨废水;年径流量为75％保证率时,20吨水中就有一吨废水;年径流量为95％保证率时,约10吨水中就有一吨废水。城镇附近河段的污废水所占的比重就更大了,一些河段的水资源已失去了部分或全部的功能。因此,大力开展水资源保护,积极防治水源污染,对于缓解本
Huaihe River Basin is located in the hinterland of our country, rich in land and mineral resources, laid a good foundation for water control in the past 30 years and has great potential for development in industrial and agricultural production, shipping, transport and aquatic products. The outstanding issue now is the lack of water resources, especially since the seventies, which has aggravated the problem of insufficient water resources due to the increasingly serious water pollution. At present, when the annual runoff of this basin is 50% guarantee rate, there is an average of one ton of wastewater in every 30 tons of water. When the annual runoff is 75%, there is one ton of wastewater in 20 tons of water and the annual runoff is 95% When about 10 tons of water there is a ton of waste water. The proportion of waste water in the vicinity of cities and towns is even greater, and the water resources of some sections have lost some or all of their functions. Therefore, vigorously carry out water resources protection, actively prevent and control water pollution, to ease the Ben