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一个水龙头每秒滴一滴水,一年可滴掉36吨水

专家一般认为缺水的成因有三:资源性缺水、水质性缺水和管理性缺水。管理性缺水有人为浪费、重复利用率低等,水质性缺水主要是指水质被污染而导致不能使用。而这两种都是人为造成的。

最近有人通过实验发现,水龙头以每秒一滴的速度滴水,35分钟能滴满240毫升的量杯,这样的话一年则要滴掉36吨水。为此有人为济南市算过一笔账:济南市现有家庭50万户,一般地说平均每个家庭有四个水龙头,全市就有200万个水龙头。如果有百分之二十的水龙头滴水,这样一年就浪费1440万吨水,相当于目前济南20天的供水量。事实上这些漏水的水龙头还确实不少,有的还不止是一滴滴的漏,更何况有些人用水大方得令人咋舌。据说青岛人看到济南人洗苹果很是吃惊,他们说用济南人洗一个苹果的水,青岛人能洗一篮子苹果。

工业用水也存在着严重浪费的现象。据统计,目前我国工业用水重复利用率只有0.6左右,远低于发达国家的0.75,单位GDP用水量是发达国家的15至100倍,一些重要产业单位耗水量比国外先进水平高几倍,甚至几十倍。我国目前生产一吨钢用水20—60立方米,而美国、日本等还不到6立方米,相差近十倍。我国工业节水的科技含量不高。

A drop of water taps per second Ti, 36 tons of water a year may drop out Experts generally believe that there are three causes of water shortages : shortages of resources, management of water and water quality of the water shortage. Management of water scarcity there is waste, duplication of low utilization, water quality of major water shortages as a result of contaminated water is not used. And the two are man-made. It has recently been discovered through experiments, one drop of water per second to speed dripping, 35 minutes to collect the cup-240 ml, so the year will drop off 36 tons of water. To this end it was a lump accounts for Jinan City : Jinan City existing family 500,000 households, generally an average family has four taps, the city has 2 million taps. If 20% of the water dripping, 14.4 million tons this year on waste water, equivalent to the current 20-day supply of Jinan. In fact many of these leaking water indeed, some even more than a drop in the leak, not to mention some water generous in horrifying. Qingdao, Jinan people who allegedly seen washing apples am shocked, they said that the use of a Apple Jinan people wash water can wash basket Apple Qingdao. Industrial waste water is the presence of a serious phenomenon. According to statistics, China's present utilization rate of only 0.6% of industrial water duplication, far below the 0.75 developed unit GDP consumption in developed countries is 15 to 100 times, a number of important industrial units of water several times higher than the advanced level abroad, or even several times. Our current production of a tonne 20-60 cubic metres of water, while the United States and Japan less than six cubic meters, a difference of nearly 10 times. China's industrial water-saving technology content is not high.