Research on Construction Strategies of Environmental Infrastructure in Urban Conglomeration

摘要

Pearl River Delta (PRD) economic region, including 7 cities: Guangzhou, Shenzhen, Zhuhai, Foshan, Dongguan, Zhongshan, Jiangmen; Duanzhou District, Dinghu District, Gaoyao, Sihui of Zhaoqing; and Huicheng District, Huiyang, Huidong County, Bolo County of Huizhou City, has an area of 41698 square kilometers, accounting for 23.20 percent of the area of Guangdong Province. This region is one of those, which have enjoyed the rapidest, fairly sustained economic growth in the Asia-Pacific region and even in the whole world. It is one of the most important, vigorous, and economically potential regions in China, and now has evolved into an important urban conglomeration in China and in the world at large. However, the rapid development of the region has disturbed the existing harmony between cities and the nature. And there are increasing conflicts between the urban development and regional eco-system, with the natural eco-system being gradually consumed. The rapid economic and social development has weakened the capacity of the regional eco-system to support the urban conglomeration . Therefore, the harmonious development of the environmental infrastructure is of great significance in terms of the handling of pollutants from PRD urban areas and the protection of a sound eco-system. Urban basic infrastructure means the variety of manly constructed functional facilities inside the city area, which provides the necessary input of energy and material and the output or the dismantling of city wastes, and thus constitutes the basic condition on which the survival and evolution of the city depends. It generally refers to those facilities of city road and public transport, water supply and drainage, heating, electricity, gas supply, communication, environmental hygiene, gardens virescence and disaster prevention system. And there are seven subjects for research on basic environmental infrastructure: water resources, water supply, water emission, supply of electricity and gas, and city hygiene, priority given on the research of the coordinated development of waste water treatment system and the solid waste disposal system.