 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
+ F# B2 q" p( H% W, s! NWater containing calcium carbonate at7 G5 Y- @9 e1 C
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
' g0 U" |% ]/ H# j( a& j6 E6 Qmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard, g) q4 q) o) k
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:
- j) r+ y7 H6 t2 g/ i* |, H% OMontreal 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.
' R- t6 D$ ~+ M1 ?0 Z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。
9 Z+ N/ o% S" t7 Y+ V% n3 ~2 N/ c3 T0 A3 {$ y6 o9 p8 v3 L) M0 D& Z
|
|