 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
: @3 q- K& m# V& B0 H: q/ p3 fWater containing calcium carbonate at
8 K; K* l" `, o& i+ uconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
o6 {* x/ q5 T( x1 Z8 bmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard
* ^2 C1 n' F1 `4 g3 M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:
" m( h3 Z2 W. }Montreal 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.
# v# b, r" H* x y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。
}0 ^# A8 v. M. p9 ^+ t4 p3 i- q8 |; e" r$ d+ W o
|
|