부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.chemosphere.2007.10.001 Byline: J. Wang (a), M.C. Long (a), Z.J. Zhang (a), L.N. Chi (a), X.L. Qiao (a), H.X. Zhu (b), Z.F. Zhang (c) Keywords: Alkane(s); Degradation; GC-MS; Industrial wastewater; Toxicity; Upflow anaerobic sludge bed (UASB) Abstract: Wastewater in Shaoxing wastewater treatment plant (SWWTP) is composed of more than 90% dyeing and printing wastewater with high pH and sulfate. Through a combination process of anaerobic acidogenic [hydraulic retention time (HRT) of 15h], aerobic (HRT of 20h) and flocculation-precipitation, the total COD removal efficiency was up to 91%. But COD removal efficiency in anaerobic acidogenic unit was only 4%. As a comparison, the COD removal efficiency was up to 35% in the pilot-scale upflow anaerobic sludge bed (UASB) reactor (HRT of 15h). GC-MS analysis showed that the response abundance of these wastewater samples decreased with their removal of COD. A main component of the raw influent was long-chain n-alkanes. The final effluent of SWWTP had only four types of alkanes. After anaerobic unit at SWWTP, the mass percentage of total alkanes to total organic compounds was slightly decreased while its categories increased. But in the UASB, alkanes categories could be removed by 75%. Caffeine as a chemical marker could be detected only in the effluent of the aerobic process. Quantitative analysis was given. These results demonstrated that GC-MS analysis could provide an insight to the measurement of organic compounds removal. Author Affiliation: (a) College of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China (b) Insitute of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China (c) Shaoxing Wastewater Treatment Development Co., Ltd., Shaoxing 312074, China Article History: Received 13 March 2007; Revised 1 October 2007; Accepted 1 October 2007