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Livestock Wastewater Treatment Using the DOF and PO2 System with High Concentration of Ozone  

Lee, Byoung-Ho (Civil and Environmental Engineering, University of Ulsan)
Kim, Sung-Hyuk (Civil and Environmental Engineering, University of Ulsan)
Publication Information
Abstract
Livestock wastewater is known to be very difficult to treat because it contains highly non-biodegradable organic material. Thus the DOF(Dissolved Ozone Flotation) system and the PO2(Pressurized Ozone Oxidation) system were built at the livestock wastewater treatment plant, and characteristics of treatments were investigated in this paper. Suspended Solids(SS) removal efficiency was over 94% by DOF system. 90% of $COD_{Mn}$ was removed, from 620 mg/L down to 63 mg/L by the DOF-PO2 system. During the period of operation, $SCOD_{Cr}$ was removed an average of 82%, from 890 mg/L down to 160 mg/L. 96% of UV-254 absorbance was also removed. TP removal efficiency was over 98%, from 27 mg/L to 0.35 mg/L, and TN was also removed 68% along with suspended solids. It was possible to meet effluent standards of the livestock wastewater treatment plant by the DOF-PO2 system along with biological treatment.
Keywords
Livestock Wastewater; Ozone; DOF; PO2; Contact Oxidation;
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Times Cited By KSCI : 1  (Citation Analysis)
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