 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:
5 i# E4 ~! T# wWater containing calcium carbonate at& o L. H7 }4 r3 H
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,! [, C' r/ Y( @2 [' M* l/ j
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard, L3 i; ]6 c( L, x
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:
( \) M6 t! ~5 ?7 }9 R" b s( xMontreal 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.
0 H! M: T2 G8 \( a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。* t& b( x# s7 R2 j1 Y( [% b6 T6 c
$ z3 }+ {9 t( a' t |
|