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城市供水企业在水的提升、净化、输送过程中,要消耗大量的能源。以1982年为例,我国城市总供水量为101亿吨,如按当年北京、上海等45个城市自来水公司每千吨水平均耗电量342度计算,那么全国城市供水企业一年总耗电量约为34.5亿度,占当年全国发电量的1.05％,相当于一个装机容量70万千瓦发电厂的一年发电量,这是一个不小的数字。近几年来,占全国城市总供水量十分之一的上海市自来水公司,由于重视了节能工作,每千吨水耗电量已从1979年的237.6度降到1982年的204.7度,比上述45个城市平
Urban water supply companies consume large amounts of energy in the process of water enhancement, purification, and transportation. In 1982, for example, the total water supply in China’s cities was 10.1 billion tons. If the average water consumption per kiloton of the water companies in 45 cities such as Beijing and Shanghai was calculated at 342 degrees, then the total power consumption of urban water supply enterprises in the country for a year would be as follows: The volume is about 3.45 billion kWh, accounting for 1.05% of the national electricity generation that year. It is equivalent to a year’s power generation capacity of a 700,000 kilowatt power plant with an installed capacity, which is not a small figure. In recent years, the Shanghai Water Supply Company, which accounts for one-tenth of the total urban water supply in the country, has attached importance to energy conservation. The electricity consumption per kiloton of water has dropped from 237.6 degrees in 1979 to 204.7 degrees in 1982. 45 city flat