| Popis: |
In order to effectively treat livestock wastewater in constructed wetlands by natural purification method, removal velocities of pollutants under different injection methods in constructed wetlands were investigated. The removal velocities of chemical oxygen demand (COD), suspended solid (SS), T-N and T-P by continuous injection method were slightly rapid than those by intermittent injection method in full-scale livestock wastewater treatment plant. The removal velocity (K; ) of COD by continuous injection method was for bed, for bed, for bed, for bed and for bed. The removal velocities (K; ) of COD in , , , and beds by intermittent injection method were , , , and , respectively. The removal velocity (K; ) of SS by continuous injection method was for bed, for bed, for bed, for bed and for bed. The removal velocities (K; ) of SS in , , , and beds by intermittent injection method were , , , and , respectively. The removal velocity (K; ) of T-N by continuous injection method was for bed, for bed, for bed, for bed and for bed. The removal velocities (K; ) of T-N in , , , and beds by intermittent injection method were , , , and , respectively. The removal velocity (K; ) of T-P by continuous injection method was for bed, for bed, for bed, for bed and for bed. The removal velocities (K; ) of T-P in , , , and beds by intermittent injection method were , , , and , respectively. |
