 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
5 j5 N1 w+ Z4 Z/ E$ ^Water containing calcium carbonate at: u; i: ?5 K G# P
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,2 ^; X1 b. H+ v7 C/ K4 A
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard3 g, T, f L8 Q
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:
; o7 Y; O4 P) A9 C% IMontreal 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.
: o" R, v8 F _4 ~7 q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。
' K& |% J# s2 c+ g q' a$ ?; N1 V( X5 ^( N+ J8 o. e2 b
|
|