 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
2 q7 K2 p* f* J- `Water containing calcium carbonate at# I- U1 j1 L( R4 \
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,9 H1 z, [4 i7 B: ^+ l; N
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard
0 J9 d7 V Z& ]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:; V: x9 j+ ]* d' Y
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.+ O, J% p8 `$ P4 D: E/ P5 S& H0 H, M
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。* Z) w8 H- J% X
2 J5 O# M% Y: k7 k% J" i |
|