Department of Environmental Engineering, Faculty of Engineering, Dokuz Eylul University, Tinaztepe Campus, Izmir 35160, Turkey.
Water Sci Technol. 2012;66(5):1117-31. doi: 10.2166/wst.2012.293.
In this study the anaerobic treatability of amoxycillin (AMX) was investigated in a laboratory-scale anaerobic multi-chamber bed reactor (AMCBR)/aerobic continuously stirred tank reactor (CSTR) system. The chemical oxygen demand (COD) and AMX removal efficiencies were around 94% in the AMCBR reactor at hydraulic retention times (HRTs) between 2.25 and 5.5 days. Decreasing the HRT appeared not to have a significant effect on the performance of the AMCBR up to a HRT of 1.13 days. The maximum methane production rate and methane percentage were around 1,100-1,200 mL/day and 55%, respectively, at HRTs between 2.25 and 5.5 days. The decrease in HRT to 1.5 days decreased slightly the gas productions (1,000 mL/day and 500 mL for total and methane gases) and methane percentage (45%). The AMCBR recovered back to its baseline performance within a couple of days. The acute toxicity of 150 mg/L AMX was monitored with Daphnia magna, Lepistes sp., and Vibrio fischeri acute toxicity tests. The acute toxicity removals were 98, 96 and 96% for V. fischeri, D. magna and Lepistes sp. in the effluent of the sequential system treating 150 mg/L AMX at HRTs of 2.25-5.5 days. Among the trophic organisms used in the acute toxicity tests the most sensitive organism was found to be bacteria (V. fischeri) while the most resistant organism was found to be fish (Lepistes sp.).
在这项研究中，采用实验室规模的厌氧多室床式反应器（AMCBR）/好氧连续搅拌釜式反应器（CSTR）系统，研究了阿莫西林（AMX）的厌氧可处理性。在水力停留时间（HRT）为 2.25 至 5.5 天的 AMCBR 反应器中，COD 和 AMX 的去除效率约为 94%。在 HRT 为 1.13 天之前，降低 HRT 似乎对 AMCBR 的性能没有显著影响。在 HRT 为 2.25 至 5.5 天之间，最大甲烷产率和甲烷百分比分别约为 1100-1200 毫升/天和 55%。将 HRT 降低至 1.5 天，略微降低了气体产量（总气体和甲烷气体分别为 1000 毫升/天和 500 毫升）和甲烷百分比（45%）。AMCBR 在几天内恢复到基线性能。采用大型溞、螺旋蝇和发光菌急性毒性试验监测了 150mg/L AMX 的急性毒性。在 2.25-5.5 天的 HRT 下，序批式系统处理 150mg/L AMX 的出水对发光菌、大型溞和螺旋蝇的急性毒性去除率分别为 98%、96%和 96%。在急性毒性试验中使用的营养生物中，最敏感的生物是细菌（发光菌），而最具抗性的生物是鱼类（螺旋蝇）。
