| On this study, Al and Fe electrode applied to the batch reactors and A/O reactors for the removal of nutrients(N, P). It was supplied 1.5V, 3.0V with 2day HRT. First of all, three batch reactors were operated. Al electrode applied in B-II, Fe electrode applied in B-III, and 1.5 voltage was supplied. The removal efficiency of COD, T-N and T-P is 24%, 10%, 14% respectively. When Al+Fe electrode applied in B-I with 3V, 2day HRT, the removal efficiency COD, T-N and T-P is 77%, 50%, 82% respectively. Al+Fe electrode is more effective than each Al and Fe electrodes. As the second, two A/O reactors were operated with 3day HRT. A/O-I reactor is a control reactor, which was not supplied electricity. But, Al+Fe electrode was applied in A/O-II, which was supplied 3.0V. The removal efficiency of COD, T-N and T-P is 72%, 95%, 50% respectively in A/O-II reactor. In A/O-I reactor which is not supplied electricity, the removal efficiency of COD, T-N and T-P is 56%, 49%, 80 % respectively. Electrolysis should be eminent to remove T-P in swine wastewater. MLVSS/MLSS was 0.78 in A/O-I reactor and 0.63 in A/O-II reactor, which turned to 0.43 after 20days. MLSS was increased because of the metal ion extracted into the reactor. The color changed a lot as time goes by. Color of effluent is light yellow in A/O-II, but dark brown in A/O-I. The color in Swine wastewater is very difficult to remove, but it should be effective to remove the color in this system. |
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