 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
2 c, p! Y2 l7 y1 n4 N& N/ V$ MWater containing calcium carbonate at [, Q& M' b8 r8 H
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,; t- I, e% O( y+ e! e; z/ ~
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard
8 Y @0 \+ V H3 v7 R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:
8 q4 \/ t0 m* a1 X/ \/ \5 A a# fMontreal 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.
" a$ T) G) N% h% R* \! {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。: J9 ]4 e& z+ r/ o( t
' ], x' k7 y$ [" G1 j
|
|