 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:( ?8 z g0 g/ d* g( j: W. t
Water containing calcium carbonate at3 v/ y5 [; o: ~
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,% C8 u; J3 \' F* `
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard1 S" g: c, C+ z( B$ u% U+ a9 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:9 L+ k5 |' \: x# X8 _) J
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.
6 {9 P& O# N' d5 f6 ^$ t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。
5 {8 `7 ~ k$ l$ A1 G; o9 a3 U! M* n. E* a. G1 F! U
|
|