澳门真人线上游戏

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学校直饮水楼层分质
点击次数:287次    发布时间:2019/9/19

澳门真人线上游戏 YI、XUEXIAOSHISHIGUANDAOZHIYINSHUIKEXINGXINGFENXI

目前学生在校饮水方式及存在的问题:
澳门真人线上游戏 直接饮用自来水:很多经济条件不发达的地区,学生普遍直接饮用饮自来水,而且夏天生饮习惯更为普遍。我们应看到从大多数地区讲,自来水受水源污染,超负荷运转及自来水输配管道的二次污染,影响终端自来水水质差,很多卫生指标超标,尤其水中铁锈超超标,而且水质越差的地方,水中含氯漂白粉投入越多,水中有机物与多余氯结合形成三氯甲烷,是强致癌物质,要强调一点,自来水是生活饮用水,不只是饮用水。现在作为自来水的水源,污染程度也不容乐观,所以除一些大城市原水保护好,水厂净化条件先进,终端水质有保证才能生饮外,大多数情况不宜提倡生饮。从全国讲,我们自来水厂的净化工艺、设备及管理水平、自来水品质、输水管道等,还做不到国外能直接饮用的水平。

 

澳门真人线上游戏  

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三、学校管道直饮水工程的投资回收及利润
澳门真人线上游戏 按惯例,学校管道净水系统工程总投资回收有几种形式:⒈财政拨款,⒉社会赞助,⒊在校学生一次性收取(每学生50元至80元),⒋由学生每学期饮水费中回收,以1000学生的学校饮水为例,工程投资约5万元,而每学生每学期交纳20元饮水费,每学期回收资金2万元,设备运行开支为每学期2500元,也即是说,一年半时间就能回收总投资,以后每年有3.5万元的营利。事实证明,学校管道净水系统工程既解决学校学生饮水难问题,又能令学校多一笔经费收入,以改善学校的设施或增加老师的收入。


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