A Feasibility Study on Biological Carrier - Aerobic MBR System Treating Landfill Leachate

• Main Authors: Yi-ting Wang, 王怡婷
• Other Authors: Chia-yuan Chang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/08667436675332980024

碩士 === 嘉南藥理科技大學 === 環境工程與科學系暨研究所 === 98 === The combined membrane bioreactor was conducted by using leachate wastewater. The system was operated with HRT equal to 48 hours and SRT equal to 50 day. The objective of this study was to investigate the effect of recirculation rate to membrane performance. The experiment was separated into three phases. The first phase was operated without anoxic reactor. The second phase, anoxic tank was applied into the system with 1Q recirculation rate. The third phase, the recirculation was changed from 1 Q to 2Q. At the first stage, the results showed that the removal efficiency of chemical oxygen demand (COD), total organic carbon (TOC), total kjeldahl nitrogen (TKN), organic nitrogen (Org-N) , ammonia nitrogen (NH4+-N), total nitrogen (TN) and total phosphorus (TP) was 32 %, 28 %, 65 %, 70 %, 69 %, 32% and 55.2% respectively. The COD and TN removal efficiency were very poor. At the second stage, the result showed that the removal efficiency of COD, TOC, TKN, Org-N, NH4+-N, TN and TP was 60 %, 61 %, 74 %, 73 %, 82 %, 42 % and 66 % respectively for the COD and TN removal efficiency improved significantly. Finally, the third stage, the result showed that the removal efficiency of COD, TOC, TKN, Org-N, NH4+-N, TN and TP was 75 %, 72 %, 84 %, 77 %, 99 %, 70 % and 34 % respectively. There was excellent for removal of ammonia. At the third stage, the reactor showed the removal of 99.8% turbidity and the total removal efficiency of phosphorus removal was instability. And the second stage, the system was operated with the organic carbon source (molasses), and found that the addition of organic carbon sources can be improved denitrification removal efficiency, and the level of ammonia nitrogen removal efficiency significantly increased up to 99 %.