位于英国伦敦的著名景点千年圆顶将于本世纪最后一天正式对外开放,预计该景点一年可吸引游客达1700万,据测算日冲洗厕所达8万多次,耗水超过5亿L。为了节约水资源,英国泰晤士水公司将投入200万英磅为该景点修建节水装置。在拟议的方案中,最主要的措施是修建屋顶集雨装置。千年圆顶的屋顶面积为25英亩(约合101150m~2),集雨面积为世界之 The Millennium Dome, a famous attraction in London, England, will be officially opened on the last day of this century. It is estimated that this attraction will attract 17 million tourists a year. It is estimated that more than 80,000 flush toilets have been washed and the water consumption exceeds 500 million L. In order to save water resources, the British Thames Water Company will invest 2 million pounds for the construction of water conservancy installations. In the proposed scheme, the most important measure is the construction of a rainwater harvesting device on the roof. Millennium Dome roof area of ​​25 acres (about 10,1150 m ~ 2), rain collection area of ​​the world