| 摘要 |
A process for removing lead from drinking water discharged from a drinking water outlet comprising: a) directing the water through a first matrix comprising a calcium mineral of between 10 and 100 weight percent of a solid calcium phosphate mineral which is slightly soluble in water, the remaining portion being a solid calcium carbonate mineral which is slightly soluble in water, such that there is sufficient contacting between the water and the first matrix to introduce sufficient phosphate ions into the water to form lead precipitate and reduce the lead concentration in the water to below 15 parts per billion; b) directing the lead depleted water from step (a) through a second matrix, the second matrix comprising a mineral that when in equilibrium with the water reduces the phosphate ion concentration to 60 mg/L or below.
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