Activated Sludge Oxygen Uptake Rate Measurement for the Inhibitory Effect of Xenobiotics

• Main Authors: Lu, Li Chuen, 盧俐君
• Other Authors: 張玉明
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/98776720115353665011

碩士 === 大葉大學 === 環境工程學系碩士班 === 99 === The purpose of this study was to investigate inhibitory characteristics, if any, of the activated sludge that had treated a wastewater that may contain inhibitory substances. In this study we use the activated sludge that treated wastewater from an advanced technology factory. Since the compositions of the wastewater are unknown, we thus utilize 2, 4-D and 2, 4-DCP, which are both known to be inhibitory, as a control. Our experiments were to measure the oxygen-uptake-rate (OUR) of the aerobically growing activated sludge when the test objects were introduced into the growth process. We apply the standard OECD209-OUR-process approved by European Union to measure the levels of inhibition of the test samples. Our results indicate that the inhibition of the sample is not apparent of the object activated sludge after its treatment of the wastewater from the factory, but 2, 4-D and 2, 4-DCP represent remarkable inhibition contrastively. Therefore, the waste sludge from this advanced technology factory causes merely weak influence to the environment. The results can also play as a rigorous refernce on the reduction of the sludge and the treatment of wastes as resources.