| 摘要 |
<p>PURPOSE:To efficiently remove the phosphorus in waste water without increasing excess sludge and without generating coloration by adding superfine particle iron powder having 1-8mu grain size into the waste water in a waste water treatment tank in which activated sludge is made to exist, thereby treating the waste water. CONSTITUTION:The superfine particle iron powder having 1-8mu grain size is added to the waste water in the waste water treatment tank where the activated sludge exists, by which the phosphorus dissolved in the treatment tank is removed at a high rate without increasing the excess sludge too much. The 1-8mu superfine particle iron powder to be added is liable to be suspended in water by stirring and settles in the same manner as the activated sludge or by sticking to the activated sludge in a static state, thus capable of efficiently removing the the phosphorus in the waste water. Since this method allows all the treatments to be executed in the single tank, the operation administration is easy and the initial construction cost and running cost are reduced.</p> |
