| Title |
Swine Wastewater Treatment by Combination of Anaerobic-Aerobic Digestions |
| Authors |
임제현 ( Je Hyun Yim ) ; 김충곤 ( Choong Gon Kim ) ; 강선홍 ( Seon Hong Kang ) |
| Abstract |
This study was performed to overcome disadvantages of anaerobic and aerobic digestion processes for treating swine waste by combining them. Also a reactor for precipitating struvite crystal was installed to maximize removal efficiency of phosphorus and nitrogen. ASBR(Anaerobic Sequencing Batch Reactor), be resistant to the organic shock load, was installed ahead of SBR(Sequencing Batch Reactor) to treat swine wastewater containing high concentration of organics. To examine the positioning effect of each process on removal efficiency, two systems (Run Ⅰ : ASBR - Struvite Tank - SBR, Run Ⅱ: Struvite Tank - ASBR - SBR) were operated. It was concluded that struvite tank improved removal efficiency of nitrogen and phosphorus in both systems. Also organics, nitrogen and phosphorus loads were reduced in the struvite tank. In the respect of the nitrogen and phosphorus removal, combination of anaerobic and aerobic digestions greatly improved the efficiency compared to each process. Difference by position change of the struvite tank was not clearly observed. |