Relationship Study On Harbin's Economy And Water Environment Pollution

Gross domestic product (GDP) is the most important indicator of measuring a region's development. However, due to the growth of socio-economy, irrational industrial structure and mulfunctional environmental protection measures, with the development of human society and the continuous growth of GDP, the environment problems have brought significant effects on social life, and urban's sustainable development is under constraint of environment pollution. Therefore, the study of the relationship between economic development and environmental contaminations'emission has great importance of improving the environment quality while maintaining sustainable urban development.This thesis studied the characteristics of Harbin's urban economic development and water environment, collected status information and data of water contaminations, analyszed Harbin's environment problems and calculated the economic loss caused by waste water discharge which was around 7% of the very year's total GDP in 2008 and was much more than the environment investment weight of the same year. Chose waste water and COD discharge volume as the main indicator, analyzed the factors effecting water environmental pollutants discharge volume. After selecting the appropriate method, this thesis calculated the economic losses of municipal sector and agricultural production brought by water pollution during 2001-2009.According to system dynamics modeling theory, based on analyzing the structure of urban economy and environment, a system dynamics model of Harbin's economy and water environment system was built. 4 schemes are designed to solve the problem which the city's current economy and environment system is facing. The schemes are designed to reduce the waste water and COD discharge volume while the economic grow speed won't decline. Forecasted the water contaminations discharge volume and the economic loss brought by waste water discharging, and got the following conclusions: The tendency of urban sewage and COD discharge volume is going to be rising. If the current status continues, the industrial waste water volume will be 5.04×108 tones, and COD discharge volume will be 11.9×104 tones. The scheme combining water saving measures and economic policy changing strategy is the best which barely effects the economic development and most effectively reduce contaminations'discharging volume. With this very scheme, by 2020 urban waste water discharge volume will be reduced by the amount of 6×107 tones, and COD discharge volume will be reduced by the amount of 1.636×105 tones each day. 0.28 billion yuan water treatment plant's construction investment will be saved. Later some suggestion and advises are given according to the simulation results.