Fig. 1. Schematic diagram and picture of test plant.
Fig. 2. Variation of solids and CODcr in Digested Sludge.(a: TS&VS, b: TCODcr, c: SCODcr)
Fig. 3. Variation of generation scum by wet milling with/without after ozonation. (a: wet milling without after ozonation, b: wet milling with after ozonation)
Fig. 4. Variation of solids and CODcr in Digested Sludge with/without wet milling by ozonation. (a: TS&VS without wet milling, b: TS&VS with wet milling, c: TCODcr&SCODcr without wet milling, d: TCODcr&SCODcr with wet milling)
Table 1. Characteristic of Digested Sludge in O-Si
References
- Ministry of Environment, 2010-2014 Statistics of Sewage. (2015).
- Ministry of Environment, 2030 Leverage plan to Reduction and Biogas Production. (2012).
- Pere, J., et al., "Characterization and dewatering of activated sludge from the pulp and paper industry", Water Science and Technology, 28(1), pp. 193-201. (1993). https://doi.org/10.2166/wst.1993.0046
- Weemaes, M., et al., "Anaerobic digestion of ozonized biosolids", Water Research, 34(8), pp. 2,330-2,336. (2000). https://doi.org/10.1016/S0043-1354(99)00373-5
- Yasui, H. and Shibata, M., "An innovative approach to reduce excess sludge production in the activated sludge process", Water Science and Technology, 30(9), pp. 11-20. (1994). https://doi.org/10.2166/wst.1994.0434
- Onyeche, T. I., et al., "Ultrasonic cell disruption of stabilised sludge with subsequent anaerobic digestion", Ultrasonics, 40, pp. 31-35. (2002). https://doi.org/10.1016/S0041-624X(02)00087-2
- Appels, L., et al., "Influence of microwave pre-treatment on sludge solubilization and pilot scale semi-continuous anaerobic digestion", Bioresource Technology, 128, pp. 598-603. (2013). https://doi.org/10.1016/j.biortech.2012.11.007
- Lee, Y.D., Cho, E.I., Hong, S.M., Ko, I.B., "Study on reduction effect of sewage sludge by ozone treatment with/without alkali addition", Journal of Korea Science and Technology, 14(3), pp. 19-26. (2006).
- Hong, S. M., et al., "The Effect of wet milling on Ozonation Efficiency of Digested Sludge", Journal of Korea Society of Waste Management, 32(8), pp. 751-755. (2015). https://doi.org/10.9786/kswm.2015.32.8.751
- C. J., Park, et al., "Effect of suspended solids particle on mass transfer in vertical slurry flow", Journal of Korean Chemical Engineering Research, 30(4), pp. 450-4563. (1992).