Benefits of Bioaugmentation during Xenobiotic Shock-Loading of Activated Sludge Process

• Main Authors: LIN,KUEI-YEN, 林奎延
• Other Authors: CHANG,YU-MING
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/51794872470436805153

碩士 === 大葉大學 === 環境工程學系碩士班 === 102 === Activated sludge treatment plant ordinarily receives wastewater that contains biogenic organic as the main pollutant. The plant may have the times when the influent contains persistent xenobiotic compound, which will bring failure to the plant. This study simulated the shock recovery of xenobiotic shock with the use of bioaugmentation. The lab-scale activated sludge system was operated at mean-cell-residence-time of 10d and hydraulic residence time of 8 hr until steady state. After which a xenobiotic shock input of 2,4-D was applied to a control and a system augmented with activated sludge previously acclimated to 2,4-D. Test results showed that; (1), un-augmented system was unable to treat the shock influent of 2,4-D, but had to wait until the pulse input had diluted out; (2) the augmented system showed degradation reaction by acclimated activated sludge, which very much shortened recovery time.