| 摘要 |
<p>Method for reducing phosphorus in effluents and process waters in a pulp mill or a paper mill comprises: - adjusting the pH of the water to be treated with an alkaline agent (A), - supplying carbonate ions to the water, - precipitating calcium carbonate from the water to be treated by the effect of carbonate ions supplied to the water, - coprecipitating phosphorus together with the precipitated calcium carbonate, and - separating the coprecipitated phosphorus from the effluent or process water together with the precipitated calcium carbonate.</p> |
