Electro-activated microoganism process combines FOBL, activated sludge process and EFOBL in sequence. Organic material is electrolyzed by oxidation-reduction reacted between solution and electrode. Metal ion isolated from both electric poles is adsorbed, coagulated and precipitated with suspended solid. When the temperature is 32℃, the removal rate of COD is 42%, which is most effective. To raise the temperature until 32℃, Iron needs 20V and Tungsten needs 15V. BOD is removed up to 40% with 3day HRT in FOBL and BOD removal rate in activated sludge process using effluent of FOBL is about 50% with 4day HRT, 80% with 6day HRT, 89% with 8day HRT. 90∼99% of BOD removal efficiency could be accomplished with 1day HRT in EFOBL. In the electro-activated microoganism process, Each removal rate of BOD, COD, TSS is 93.8%, 88.9%, 91.6% with 12day HRT. T-N, T-P are removed 73.1%, 73.1% with 12day HRT. |
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