geography reading report 急!!!!!!!!!

Wastewater pollution has always been a major problem throughout the world. The lack of suitable water used for drinking, agriculture, farming, etc. has declined through the years. With a shortage of water throughout the world, proper methods of treating and recycling water is the key goal in sustaining our limited water resource supply. Geographically speaking, the wastewater pollution within China has affected the environment, society, and agriculture. The water pollution crisis in China has brought up an issue of efficient wastewater treatment methods to help alleviate their problems. Throughout this paper, we will discuss the topics on the effects of wastewater pollution towards the environment and the society (health factors, agriculture, economic impacts, etc). At the same time, proposals for wastewater treatment procedures and facilities to help the water crisis in China will be discussed.
INTRODUCTION
The lack of clean water has always been an issue of environmental concern all over the world. This environmental issue is mainly stressed in developing countries today. The main sources of water pollution are: industrial (chemical, organic, and thermal wastes), municipal (largely sewage consisting of human wastes, other organic wastes, and detergents), and agricultural (animal wastes, pesticides, and fertilizers) (Brower et.al, 1990). For the past several years, China has been affected with the water pollution crisis. Three examples of wastewater pollution crisis in China are the City of Tianjin, the Chao Lakes and Xian City.
City of Tianjin is the third largest industrial city in China. For many years, the construction of urban drainage, sewage, and wastewater treatment (domestic and industrial) has lagged far behind the development and environmental requirements for the city. A wastewater Improvement Project has been introduced and co-financed by the Tianjin Municipal Government and the World Bank to help improve the city?s water conditions. This project focuses on sewage collection and treatment, as well as measures used to improve the institutional controls on sewage and pollution control. To ensure that the Tianjin Municipal Government achieves its overall objectives of optimizing water consumption and reducing pollution loads, an emphasis on the reduction of industrial water consumption and the improvement of effluent discharge quality (X. Ching Wu et. al, n/d).
The problem not only lies in the city of Tianjin, but the second example of wastewater pollution in China lies in the east central part of China, 300 miles west of Shanghai, lies the Chao Lake, one of China's five largest freshwater lakes. This area's main source of potable water supply comes from the Chao Lake. This lake is also used for as an economic and recreational resource. The water is used for commercial and recreational fishing, and as a source for irrigation. In recent years, the rapid development of industrial and urban areas, and changes in agricultural practices, have caused damage to the lake. Although pretreatment or final treatment of industrial wastewater has controlled pollution by heavy metals, toxic or hazardous substances, the lake has become overloaded with nutrients. These nutrients are contributed from municipal and industrial wastewater due to soil erosion and from excessive applications of chemical fertilizers on agricultural land. As a solution to restore the lake's water quality and to improve the health and economic concerns for the area, The Asian Development Bank (ADB) appointed the Camp Dresser & McKee (CDM). The ADB appointed the CDM to conduct a feasibility study to develop a possible project for the construction of municipal wastewater treatment facilities (Dresser, n/d).

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