Tolerance of the antibiotic Tylosin on treatment performance of an Up-flow Anaerobic Stage Reactor (UASR)
Tolerance of the antibiotic Tylosin on treatment performance of an Up-flow Anaerobic Stage Reactor (UASR)
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DOI：
10.2166/wst.2011.222
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发表时间：
2011-01-01
影响因子：
2.7
通讯作者：
Yuzir, A.
中科院分区：
文献类型：
--
作者：
Chelliapan, S.;Wilby, T.;Yuzir, A.
泰乐菌素被认为可以抑制厌氧消化中的COD去除。在这项研究中，事实证明情况并非总是如此。因此，厌氧系统可以容忍高浓度的泰乐菌素(100-800mgL(-1))。通过投加泰乐菌素磷精矿，考察了泰乐菌素浓度对上流式厌氧级反应器(UASR)的影响。结果表明，当泰乐菌素的浓度为0~400mgL(-1)时，COD的平均去除效率为93%。然而，当泰乐菌素浓度为600和800mgL(-1)时，处理效率分别下降到85%和75%。研究了泰乐菌素浓度对古生菌活性的影响，分析表明古生菌在反应器中占主导地位，证实在泰乐菌素浓度为100-400mgL(-1)的范围内没有检测到对产甲烷菌的抑制。然而，调查显示，泰乐菌素水平为600和800mgL(-1)时，产甲烷菌的数量略有减少。结果表明，产甲烷菌对泰乐菌素具有良好的适应性。预计UASR的工艺性能不会受到影响，甚至不会超过泰乐菌素生产现场实际废水中出现的水平。
Tylosin has been considered inhibiting COD removal in anaerobic digestion. In this study it is proven that this is not always the case. Accordingly, elevated concentrations of Tylosin (100-800mgL(-1)) could be tolerated by the anaerobic system. The influence of Tylosin concentrations on an up-flow anaerobic stage reactor (UASR) was assessed using additions of Tylosin phosphate concentrate. Results showed high efficiency for COD removal (average 93%) when Tylosin was present at concentrations ranging from 0 to 400mgL(-1). However, at Tylosin concentrations of 600 and 800mgL(-1) treatment efficiency declined to 85% and 75% removal respectively. The impact of Tylosin concentrations on archaeal activity were investigated and the analysis revealed that archaeal cells dominated the reactor, confirming that there was no detectable inhibition of the methanogens at Tylosin levels between 100 and 400mgL(-1). Nevertheless, the investigation showed a slight reduction in the number of methanogens at Tylosin levels of 600 and 800mgL(-1). These results demonstrated that the methanogens were well adapted to Tylosin. It would not be expected that the process performance of the UASR would be affected, not even at a level well in excess of those appearing in real wastewater from a Tylosin production site.