| ANAMMOX体系中氨与硫酸盐的同步转化条件 |
| 摘要点击 1286 全文点击 488 投稿时间：2019-02-22 修订日期：2019-03-04 |
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| 中文关键词 厌氧氨氧化(ANAMMOX) 硫酸盐与氨的同步去除(SRAS) 硫酸盐还原氨氧化(SRAO) 硫酸盐型厌氧氨氧化 氧化还原电位(ORP) |
| 英文关键词 anaerobic ammonium oxidation(ANAMMOX) simultaneous removal of ammonium and sulfate(SRAS) sulfate-reducing ammonia oxidation(SRAO) sulfate-dependent anaerobic ammonium oxidation Oxidation-Reduction Potential(ORP) |
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| 中文摘要 |
| 在CFSTR （continuous flow stirred tank reactor）反应器中接种混合污泥（ANAMMOX污泥与污水厂浓缩污泥按1 ∶1混合）研究NH4+与SO42-的同步转化，通过不断投加污泥令体系内ORP值稳定在（-200±50） mV，同步转化现象持续42 d，NH4+平均转化14.81 mg·L-1，SO42-平均转化8.77 mg·L-1.在批试实验中通过溶液是否充满玻璃瓶来控制体系内厌氧条件，不充满组NH4+与SO42-均降低，但两者的转化不同步；在完全充满组中NH4+不转化，SO42-浓度下降明显，实验后期检测到S2-.分析认为同步转化现象产生的一般条件为NH4+和SO42-基质充足，接种浓度适量的混合污泥，体系漏氧且ORP检测值在-150~-300 mV范围内.同时认为本文及相关研究中所使用的实验条件均不能证明NH4+与SO42-的同步转化是两者相互转化的结果，相反实验条件更利于NH4+与SO42-各自独立转化. |
| 英文摘要 |
| A continuous flow stirred tank reactor (CFSTR) was used to inoculate mixed sludge (with an ANAMMOX sludge to sewage concentrate sludge ratio of 1:1) to study the simultaneous conversion of NH4+ and SO42-. The ORP value in the system was stabilized at (-200±50)mV by continuously adding sludge. The simultaneous conversion lasted for 42 days. The average conversion of NH4+-N was 14.81 mg·L-1 while that of sulfate-sulfur was 8.77 mg·L-1. In the batch experiment, the anaerobic conditions were influenced by whether the solution was filled with glass bottles. Both NH4+ and SO42- in the non-filled group were reduced, but their transformation was not simultaneous. In the fully filled group, NH4+ was not transformed, the concentration of SO42- decreased significantly, and S2- was detected in the later stages of the experiment. It is indicated that the general conditions for the phenomenon of simultaneous conversion are:①sufficient NH4+ and SO42-, ② inoculating mixed sludge with appropriate concentration, ③ leaking oxygen, ④ the detection value of ORP within the range of -150 to -300 mV. At the same time, the experimental conditions used in this paper and in other related literature cannot prove that the simultaneous conversion of NH4+ and SO42- is the result of mutual transformation; on the contrary, observations are more conducive to the independent transformation of NH4+ and SO42-. |
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