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一、基本情况:古运河又称里运河。古运河扬州段北接大运河,并与邵伯湖相通。在湾头附近古运河折西向南与大运河分道。由东北向西南贯穿整个扬州古城,经瓜洲闸注入长江。市区河道直接或间接汇入古运河,从而形成市区河网。古运河曾为扬州古城增添了不少光彩。目前仍是扬州市主要的工农业生产用水水源之一,然而由于新型工业的崛起、发展,使富有生气的古运河成了一条臭水河。据1983年资料统计,古运河沿岸有大、小工厂70多家,其中直接向古运河排放工业废水的有30家工厂,每年排入废水量1733.34万吨,占总排入量的79.9%(古运河总接纳废水量为2168.07万吨/年),主要污染物耗氧量(COD)每年排入3466.368吨,按此计算,排入废水的平均排放浓度为
First, the basic situation: the ancient canal also known as the canal. Yangzhou section of the ancient Grand Canal north of the Grand Canal and Shaobohu interlinked. In the Bay near the Grand Canal west and south of the Grand Canal. From northeast to southwest throughout the ancient city of Yangzhou, Guazhou gate into the Yangtze River. Urban river directly or indirectly into the ancient canal, thus forming a urban river network. The ancient canal once added a lot of glory to the ancient city of Yangzhou. It is still one of the main water sources for industrial and agricultural production in Yangzhou City. However, due to the rise and development of new industries, the lively ancient Grand Canal has become a stinking river. According to statistics in 1983, there are over 70 large and small factories along the Grand Canal. Among them, there are 30 factories which discharge industrial wastewater directly to the Grand Canal and discharge 17,333,400 tons of wastewater every year, accounting for 79.9% of the total The total discharge of ancient canal amounted to 21,680,700 tons / year), the main pollutant oxygen consumption (COD) into the 3466.368 tons per year, according to this calculation, the average discharge into the wastewater concentration of