J Korean Soc Environ Eng. 2015; 37(10): 558-562.
Published online 2015 October 31.
Effect of the Application of Microbubbles and/or Catalyst on the Sludge Reduction and Organic matter of Livestock Wastewater
1Energy and Environmental Division, National Academy of Agricultural Science
2Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology
3Department of Environmental Engineering, JunBuk National University
Received 2015 October 02; Accepted 2015 October 23.
ABSTRACT
This study was tested to evaluate the effect of the six different combinations of microbubble, catalyst, and air as oxidant on the sludge and organic matter reduction. When all of microbubbles and catalyst, and an oxidizing agent (under Conditions 1) such as air were used, the sludge was removed more than 99%, and TCOD and SCOD removal was 58% and 13%, respectively. This result was the highest value of six conditions. In the following order, the sludge reduction of the microbubbles with air (Condition 2) and catalyst with air (condition 4) was 95% and 93.1%, respectively. TCOD removal was found to be each 53% and 47%. When the microbubbles were used with oxidant like air, the removal of sludge and organic matter was high. All of these values were higher than that of using only microbubbles and catalyst without air. In the microbubbles and catalyst react under air supply condition, OH-radicals were generated in the reaction process. These OH-radicals in the reaction process decomposed the pollutants by the strong oxidizing power. In all conditions with air, the sludge reduction was high removal rate more than 93% and TCOD removal was over 47%.
Keywords :
Microbubble, Catalyst, Sludge, Organic Matter, Livestock Wastewater
