| 硫酸盐/氨的厌氧生物转化试验研究 |
| 摘要点击 3544 全文点击 1790 投稿时间：2013-01-08 修订日期：2013-04-21 |
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| 中文关键词 硫酸盐 厌氧氨氧化 转化特性 HCO3-浓度 n(NH4+-N)/n(SO42--S)转化比 |
| 英文关键词 sulfate ANAMMOX transformation characteristics HCO3- concentration n(NH4+-N)/n(SO42--S) conversion ratio |
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| 中文摘要 |
| 采用厌氧上流式生物膜反应器,通过控制不同的水力停留时间、进水n(NH4+-N)/n(SO42--S)和HCO3-浓度研究了无机营养条件下硫酸盐/氨的厌氧生物转化特性. 结果表明,反应器中NH4+和SO42-发生了同步去除,最大NH4+-N和SO42--S去除速率分别为47.6 mg·(L·d)-1和16.9 mg·(L·d)-1,稳定去除率最高分别超过了80%和43%; 反应过程中有NO3--N的明显生成,出水NO3--N浓度最大时为77.6 mg·L-1,整个过程中,未检测到S2-的生成,有单质硫附着在生物污泥表面; 由于控制条件的不同,会产生不同的n(NH4+-N)/n(SO42--S)转化比,表明NH4+和SO42-的厌氧生物反应并不是简单地接续反应,反应器中存在更为复杂的反应过程和转化途径. |
| 英文摘要 |
| The anaerobic biological transformation characteristics of sulfate and ammonia were investigated in the upflow anaerobic biofilm reactor under inorganic nutrition condition by controlling different hydraulic retention time, NH4+-N and SO42--S ratio and HCO3- concentration in the influent. The results showed that NH4+ and SO42- were synchronously removed. The maximum NH4+-N and SO42--S removal rate was 47.6 mg·(L·d)-1 and 16.9 mg·(L·d)-1, respectively, and the highest stable removal efficiency was more than 80% and 43%. Obviously NO3--N generated in the reaction and the maximum NO3--N concentration was 77.6 mg. L-1 in the effluent. Throughout the process S2- was not detected, but there was elemental sulfur generated attached to the surface of the biological sludge. During the whole process, different control conditions led to different n(NH4+-N)and n(SO42--S)conversion ratios, which showed that anaerobic biological NH4+ and SO42- transformation was not a simple serial reaction, more complex reactions and conversion pathways occurred in the reactor. |
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