 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:" F* {: Q. f! z5 ^0 |4 `+ |
Water containing calcium carbonate at
T( Q5 h0 m3 x6 b4 iconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,0 Q) K% l) Y: y7 D- S$ Z
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard, [: \ O" C2 f$ B
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:0 H6 {1 ?' M4 A1 o/ t
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.
/ K+ B. |) G$ H0 \) L( T9 l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。4 W" M& ~1 ]8 k
2 F: y. f+ ~3 ~9 K( f, e# R {
|
|