论文部分内容阅读
中国是一个干旱缺水严重的国家,人均资源量只有2200立方米,是十三个人均水资源最贫乏的国家之一。同时污水利用率不足40%,与发达国家水资源利用率75%相比,我国污水再利用空间很大。笔者经过调研,家庭生活中,洗脸洗菜等生活用水污染程度低,这可以用于冲厕所,以减少冲厕所用的清洁自来水水量。这样不仅使一个三口之家平均每年节水30-40吨,同时可使每个家庭节省100元左右。
China is a country with severe drought and water shortages. Its per capita resources are only 2,200 cubic meters, and it is one of the 13 poorest countries in terms of water resources. At the same time, the utilization rate of sewage is less than 40%. Compared with the utilization rate of water resources in developed countries, which is 75%, there is a lot of space for reuse of wastewater in China After investigation, the author found that the level of domestic water pollution such as washing and washing vegetables is low. This can be used to flush toilets to reduce the amount of clean tap water used to flush toilets. This will not only save an average of 30-40 tons of water per year for a family of three, but also save about 100 yuan per household.