Abstract: Industry restructuring is a critical condition and an effective means as well for controlling amount and types of pollution.Take the Jiangsu and Zhejiang section of the Taihu Lake Basin as an example,industrial structure of its GDP,internal structure of its secondary industry and COD it discharged to rivers in 2007 were analyzed with COD discharge per 10 000 Yuan GDP as quantitative index.Results show that its GDP in 2007 was 1 753 billion,of which the three industries formed a ratio of 2.6∶56.6∶40.8 and its average COD discharge per 10 000 Yuan GDP was 1.76 kg.The primary industry was the highest in average COD discharge,reaching 13.86 kg per 10 000 Yuan,followed by the secondary industry and the tertiary industry,being 2.41 and 0.08 kg per 10 000 Yuan,respectively.But in terms of total amount of discharge,the secondary industry ranked first,responsible for most of the organic pollutants in the waterbody.Scenario analysis reveals that to increase the proportions of the tertiary industry and machine manufacturing industry of the secondary industry,both being low in COD discharge per unit value of GDP,and reduce the proportions of textile,printing and dyeing,paper-making,beverage,and food industries may effectively reduce COD discharge per unit GDP.

Key words: Taihu Lake Basin, industry restructuring, discharge abatement, COD, secondary industry