推荐回答(4个)
矿泉水(农夫山泉) 30左右, ppm值是说导电率.不是水的成分.
ppm 值太高.说明水中矿物质成分越高.例如鱼缸通过,火山石,过滤, 150的自来水
硬度会升高到 ,ppm达到 450左右,家用过滤器.通过渗透,降低水中矿物质的成分
甚至会让加热电水壶不结水垢!ppm甚至会接近 0,而这种水不能用来养鱼.因为这种
水会让鱼得水压病,
家用过滤器渗透水.郊区自来水 ppm 80左右过滤后是 ppm 是3,城市自来水
高层都有150左右.而郊区井水,有 250左右. 这说明井水通过土壤渗透
后含有多种导电成分.而地表水明显要低于 井水的ppm值
臭水沟 ppm 102 是可以相信的. 干涸的引水渠.自然状态下.有食蚊鱼(大肚鱼),黑壳虾,水草 ppm值也能在 160左右.自来水,150左右,洗地板的水.再测ppm 也是 150左右. PPM 只能说导电率.不能说能绝对能饮.
结论! 饮用水应该有适当的矿物质,也就是有一定的 PPM值,这个值最好接近本地区
水源取水地的自然生态地表水的ppm值,但是地表水中有微生物不能直接饮用
饮用水ppm值低好。
ppm是水的硬度的单位,低表示水中钙镁离子含量比较少,水质比较软。高则表示水中钙镁离子含量较多,水质会比较硬。如果用硬度过高的水洗脸,可能会对皮肤不好,如果用于洗衣服,会浪费水资源。如果用于饮用,最好选择ppm值低的水。因此,低ppm值的饮用水更好。
希望以上信息能帮您解决问题。如果还有其他问题,请随时告诉我。
网上查到的资料,希望对LZ有帮助
ppm是水的硬度的单位,硬度就是指水中钙、镁离子的浓度,1ppm代表水中碳酸钙含量1毫克/升(mg/L)。
美国标准:(1)饮用水:无硬度要求(2)美国供水工程协会水质标准:80-100
欧盟饮用水标准:60
中国生活饮用水国家标准:≤450
世界卫生组织饮用水水质准则:(1)饮用水:≤500 (2)优质饮用水:50
如果按ppm来衡量水质好坏的话,我刚刚在污水沟里面检测了一下ppm才102,意味着就可以直接饮用吗?......
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