Chemical / Electro-Chemical Method for Swine Wastewater Treatment
2003
Yoon, S.J. | Jo, C.H. | Park, J.I. | Shin, J.S. | Kim, C.H. | Ra, C.S. (Kangwon National University, Chunchon, Republic of Korea)
In a batch mode treatment process, which electrolyzes the wastewater after derivation of N-P crystal formation and recovery, the characteristics of pollutant removal indrced with the changes of loading rate and hydraulic retention time were studied. MgCl2 was used as Mg source for the formation of struvite and the molar ratio of MgCl2 to PO43- in influent was 1.3. When analyzing the average treatment efficiencies and removal characteristics obtained from four separate operations (Run ¥°, ¥+/-, ¥², ¥³), removal efficiencies of PO43- was not function of its loading rate. Under a condition of srfficient aeration and Mg source provided, over 88% of PO43- was eliminated by the formation of MAP without any pH adjustment, in spite of loading rate variation. An optimum-loading rate of NH4-N to achieve high removal effeciency eas approximately 100g/m3/d.
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