 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
: H! E- v, T+ C4 v, J1 RWater containing calcium carbonate at
$ ]; U/ d# n+ R3 A0 Lconcentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
" ~8 A- Q; v/ [. G+ @" Cmoderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard
, @8 t c% s! M! V0 |1 n6 b; K5 }6 Y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:
" m$ D; U& U; E( d" ?4 q1 s5 x$ nMontreal 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.
. F6 w) Q! o8 ~3 j2 E! f" o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。 d. l9 @2 R; N4 V
' l5 R: p9 e2 n7 G0 M# t* O! b; n
|
|