| Title |
Nitrogen Removal from a mixed Industrial Wastewater using Food-Waste Leachate and Sugar Liquid Waste as External Carbon Sources: Full-Scale Experiment |
| Authors |
이몽학 ( Mong Hak Lee ) ; 안조환 ( Jo Hwan Ahn ) ; 이정훈 ( Jung Hun Lee ) ; 배우근 ( Woo Keun Bae ) ; 심호재 ( Ho Jae Shim ) |
| Keywords |
Biological nutrient removal; External carbon source; Food waste leachate; Industrial wastewater; Sugar liquid waste |
| Abstract |
The feasibility of enhancing biological nutrient removal from an industrial wastewater was tested with food waste leachate and sugar liquid waste as external carbon sources. Long term influences of adding external carbon sources were investigated to see how the biological nutrient removal process worked in terms of the removal efficiency. The addition of the external carbons led to a significant improvement in the removal efficiency of nutrients: from 49% to approximately 76% for nitrogen and from 64% to around 80% for phosphorus. Approximately, 20% of the removal nitrogen was synthesized into biomass, while the remaining 80% was denitrified. Though the addition of external carbon sources improved nutrient removal, it also increased the waste sludge production substantially. The optimal observed BOD/TN ratio, based on nitrogen removal and sludge production, was around 4.0 in this study. |