 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
. y" r; k/ i" v3 T0 pWater containing calcium carbonate at; S2 O# r- q5 n$ U7 p) y; x/ n
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
+ C" r1 B/ Q6 r$ e' n2 n# C' l+ Wmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard1 J$ L& d% e. m4 D
爱城的水硬度在150-160之间,属于硬水,但不算很硬。这种硬度的水不需要在水厂进行软化处理,适当硬度的水对健康不但无害,反而有益。以下是加拿大主要城市水硬度指标:
& o- U$ x5 `4 F8 f4 _: X2 mMontreal 116 ppm,Calgary 165 ppm, Regina 496 ppm, Saskatoon 160-180 ppm, Winnipeg 77 ppm,Toronto 121 ppm,Vancouver < 3 ppm, Charlottetown, PEI 140–150 ppm, Waterloo Region 400 ppm, Guelph 460 ppm.9 X5 p+ W' f' g7 w+ e
在家里根本不需要安装什么软化水装置,而且都要把水烧开的做法也不可取,钙和镁都沉降了下来,其实这两种元素都是身体需要的,直接喝冷水最好,如果肚子能适应的话。
) b& T, m# z3 e; O4 P
- V8 ]# r$ d9 \ |
|