 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:( u" s+ Z! ~7 }/ v+ g* N( p9 l
Water containing calcium carbonate at
+ Y3 @, _# S. ^+ r% c) Xconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
Y! K# X( t. D& w5 R3 Dmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard2 V* R, F" Z2 ~- y8 O
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:+ ~$ t- C. B' ~. O! c# w8 U
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.
% p& l2 ], p* ]3 Z* G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。& v2 Q! S7 s3 U. M9 A% ?; I( X
, ]( I: I5 ?# O' D5 s |
|