1Pure purification of drinking water on campus, may bring the new health risks of campus students|Pure purification of drinking water on campus, may bring the new health risks of campus students

Campus drinking water purifying, may bring new health risks of students on campus at present, campus direct drinking water project has become increasingly popular, especially in urban areas, primary and secondary school students in school can very conveniently to drink after treatment of safe drinking water, but the school drinking water will not be able to meet the health needs of the primary and middle school students? Third Military Medical University; Chongqing 400038; China; Shu: a research professor team under the assistance of the Centers for Disease Control and Prevention (CDC) of a district in Chongqing City, Chongqing 35 schools direct drinking water were investigated, it was found, vast campus. Most direct drinking water in the mineral elements content is almost zero, equal to that of pure water. Long term drinking this type of completely pure water, may exacerbate the lack of mineral intake of young people, leading to the health risks including bone loss, cardiovascular system damage, etc.. Although the body’s mineral intake is mainly from the diet, but also the human body to drink water is an important way to supplement the mineral elements, the relationship between the mineral content of the water and health is also closely related to the human body. In particular, primary and secondary school students, is in a critical period of physical development, mineral demand is far greater than other age groups (except for the infant period), therefore, through the drinking water to supplement the minerals is even more important. The research team conducted a survey of 35 primary and secondary schools in a district of Chongqing City, and found that all of these schools were registered for the use of reverse osmosis membrane process. The so-called reverse osmosis technology is a kind of drinking water of high purity of the process, through the reverse osmosis treatment technology of drinking water, though the removal of the harmful substances in the water, but almost all removed mineral elements beneficial to the human body in water. Water quality analysis showed that 35 schools direct drinking water although all qualified health indicators, but the mineral content of the most of the school below municipal tap water (including calcium, magnesium, potassium levels are lower than the municipal tap water), is also lower than the recommendation of the World Health Organization Value (2005) and China the low mineralization degree of drinking water mineralization health standards "recommended values, and most schools water renal acid load value (PrAl) was higher than that of municipal tap water. The so-called renal acid loading (PRAL), refers to the food in vivo acid production in order to produce acid discharge pressure on the kidney of the quantitative evaluation index. In simple terms, the greater the PRAL value of the food, the more detrimental to health. Some children like to eat high fat, high protein Western food, these western food is characterized by the human body has a relatively high renal acid load pressure. If coupled with long-term consumption of low mineral content, and PrAl campus drinking water, may make the child adolescent development of mineral elements cannot be obtained, thereby affecting skeletal development and difficult in adolescence to ideal peak bone mass values. The future may also increase the risk of osteoporosis in his (her) elderly. China’s primary and secondary school students in the school time long (up to more than eight hours), the school for drinking water as a primary and middle school students in the day the main source of drinking water, in addition to consider the safety, the health effects also need to focus on one aspect. The wide use of pure purification treatment technology in the campus direct drinking water project will make the children lose the important way to supplement the mineral through drinking water. Therefore, the research team suggested that the primary and secondary schools to carry out a comprehensive assessment of drinking water purification