| 摘要 |
<p>The present invention provides an apparatus for treating raw water by microbial nitrification. The apparatus comprises a filter inserted in a fluid flow path with a flow direction from an inlet to an outlet. The filter comprises a porous filter material and biomass. The apparatus further comprises a phosphorus dosage device configured to dose a phosphorus containing compound to the water before the filter inlet based on a control signal significant for the efficiency of the microbial nitrification, and comprises a return flow path for returning at least a portion of the water for further treatment. The apparatus additionally comprises a control unit to determine the control signal. The invention further provides a method for treating raw water.</p> |
