| Title |
Decolorization of Secondary Treatment Effluent of Livestock Wastewater by Electrochemical Process |
| Authors |
윤조희(Cho Hee Yoon),김학준(Hark Joon Kim) |
| Abstract |
Electrochemical decolorization from secondary effluent of livestock wastewater treated with biological process was carried out and investigated in this study. The bipolar packed-bed metal electrode reactor as the electrochemical process has been employed for the test. Operating variables of this process including different packing electrode materials, current density, flow rate to the reactor, temperature and additive were considered to determine their respective effect of color removal. From the test results, PbO₂ electrode as anode electrode was found to be suitable for this process among various materials and optimal current density was 1.48 A/dm². The total theoretical voltage obtained from voltage-current curve was 45 V in reactor and 4.5 V per unit layer bipolar cell. And the effect of an aqueous solution(17 mM, pH 9) with the added NaCl on color removal from secondary effluent was observed to be actually more effective than without the added NaCl. Color removal increased with an increase in temperature over 50 ℃. However, increasing the flow rate decrease color removal efficiency and the value of maximum efficiency 96% when flow rate 60 mL/min at various flow rate. |