 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:. X5 D( B- u% E! S
Water containing calcium carbonate at- E' M( K: V. i7 }
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,2 T% }1 u7 Y" I$ a' z9 l- }
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard) b, S& `' R% Y( v& L* [
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:3 B; V8 r5 U. S9 f5 X9 g
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.
5 D7 H c: }1 x. W1 h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。
$ j4 ~2 e' B9 T# A4 E7 {& a. Z+ p0 i
|
|