旱情持续,节水刻不容缓。现在生活条件好了,人们越来越重视饮用水的安全,净水机因此成了许多家庭和社区的“新宠”。但随之而来的,是净水和节水的矛盾。据了解,目前多数小区和家庭采用的是反渗透式净水机,每制出1升纯净水,就有3到4升水流进下水道。很多时候,这些比自来水更干净的“尾水”,都白白浪费掉了。
今年一月份,家住德州的刘先生选购了一台家用净水机。打开水龙头就是纯净水,让一家人生活方便了不少。可到了月末一看水表,刘先生吓了一跳,这用水量足足比以前多了近三倍。
刘先生表示:“原来每个月不到50元水费,今年2月、3月分别是106元和92元。询问售后人员后才知道,使用反渗透净水机时会排出大量废水每净化1升水,就要消耗4升水。”
净水机成了费水机,这让刘先生既心疼钱又心疼浪费的水。设置在社区里的净水直饮机也存在同样的情况,家住潍坊寿光的张先生平时习惯用小区内的净水直饮机接水,投上一块钱,就可以接上一小桶,可说起水的浪费,张先生却丝毫不知情。
据了解,一般居民打水用的小桶可装7.5升水,价格在一块三毛钱左右,比起桶装水,直饮机打水要便宜新鲜一些。所以更受市民的青睐,不过,净水直饮机的净化成本却高的惊人。
寿光市自来水公司的张鹏告诉记者,目前净水机费水率最低为1:1,最高可达1:4。据家电研究机构怡康发布的数据显示,2014年全国在用的反渗透净水机,家用约1500万台,商用500万台,家用反渗透净水机平均每台每年用水量为30吨左右,商用约为66吨,每年至少白白流失的自来水约10亿吨。业内人士提醒,人们在享受净水的同时,不要忘记节水。
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