 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
( {5 E* j; J' T- S( } iWater containing calcium carbonate at/ q! b/ A" p1 K) P$ G0 w, U
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l, B/ }- S( ~! u9 w5 U/ Y
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard. u; i) B5 _. }% _; u, h
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:4 N! S! q, `& W5 m/ ?1 s! `
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 a0 X2 A% H4 E7 c/ J 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。+ Y9 q& J2 X2 T+ d: s; T0 C& l
4 T9 P. N9 L9 b3 } c6 k1 f |
|