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一、产生的背景城市家庭每天都在消耗大量水资源。科技进步、工业繁荣和设计的兴旺,推动城市家庭率先步入了电气化时代,用水家电的普及,使每个家庭用水量成倍激增。建国初期我国城市居民人均生活用水仅为14升/日,而今已经飞涨至人均300升/日。同时,城市家庭生活废水排放量也十
First, the resulting background Urban households consume large amounts of water every day. The advancement of science and technology, the prosperity of industry and the prosperity of design pushed urban families into the first place in the era of electrification, and the popularization of water appliances led to a sharp increase in water consumption per family. In the early days of the founding of our nation, the average domestic water consumption per capita for urban residents was only 14 liters per day, which has soared to 300 liters per day today. At the same time, urban household wastewater discharge is also ten