城市雨水的会合和应用(国外英文资料).docVIP

城市雨水的收集和利用(国外英文资料) The collection and utilization of urban rainwater The rainwater collection and utilization is not new, as early as the qin and han dynasties in our country have built the pond had been used to record of life, and the northwest region of water cellar construction has a history of hundreds of years. The record of collecting rainwater from abroad is also a case in point. And the real modern sense of rainwater harvesting, especially the use of rainwater harvesting in cities, was developed in the 1980s through the 1990s. With the further acceleration of urbanization, the problems of urban water shortage have been deepened, and environmental and ecological problems have also been extended. In order to solve the problems of water shortage, environment and ecology, people focus on the collection and utilization of rainwater. The problem is the problem of water shortage, environment and ecology. Abroad started earlier research on this subject, the domestic urban rainwater collection started earlier first, Beijing and Shanghai on the issue of collecting rainwater did not cause enough attention, the reason is in spite of the bad water quality in Shanghai but not lack of water. However, rainwater collection and use is not only to solve the problem of water, it can also relieve such as the Shanghai area is huge problem such as water supply pressure, road surface water. There are also some mitigating effects on soil erosion and water pollution. Why collect rainwater To answer this question, I collected a collection of data from the south bridge region: Occurrence of the regions 2004 peak water consumption of 130000 tons/day, and at present the third waterworks of water capacity of 100000 tons/day, due to the water pipe tube can not meet the requirements, the actual carrying capacity is only around 85000 tons/day. In order to supplement the water peak gap, we have to start the old water plant. In this already tense water environment, green water has been added