关键词: 河北省, 学校, 饮水设备, 出水水质

Abstract: Objective To investigate the water quality and sanitation status of different drinking water equipment in schools from Hebei Province,provide reference for improving drinking water for school students and strengthening supervision and management. Methods All the schools in Hebei Province were stratified according to the different types of water supply equipment,and 40 schools were randomly selected from each group between April and June 2021. Any groups less than 40 schools were all enrolled. One water sample was collected from every selected school. A total of 245 water samples were collected and tested. Results The water quality of the pipe dual water supply was the best,with the qualified rate of 100.0% for all indexes. The qualified rate of the total number of colonies for the water dispenser was 95.0%,and the qualified rates of the other indexes were 100.0%. The water quality of water quality for the water boiler was the lowest,the qualified rates of color and turbidity were 97.5%,the qualified rates of total dissolved solids,oxygen consumption and total hardness were 95.0%,and the qualified rates of total bacteria,total coliform and Escherichia coli were 87.5%,87.5% and 95.0%,respectively. Except for oxygen consumption,total number of bacteria,total coliform and Escherichia coli,the qualified rates of other indexes for the water quality processors by different processes were 100.0%. Conclusions The schools should choose to use water quality processors with functions including membrane filtration,disinfection,heating and so on. It is better to replace the filter element regularly according to the relative provisions. In order to ensure the safety of drinking water and health for students,the health supervision departments should strengthen the supervision and management for water purification machine and deal with illegal behaviors in time.

Key words: Hebei Province, Schools, Drinking water equipment, Water quality