 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:% k; `5 O" O) P& ?1 L
Water containing calcium carbonate at
2 f8 B$ D0 C, `0 S. d7 \4 Tconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,) z9 L+ t/ V1 j# m1 d
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard; |8 I: B4 O5 M2 ]
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, [' Y! K/ n- }: JMontreal 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.6 N3 x: ~/ {# |2 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。
! z, |7 C7 a) M5 E6 x( o7 f
: m* |' l+ U+ u2 R7 c |
|