石油炼化废水对ANAMMOX的脱氮性能影响研究

发布时间：2019-01-15 23:53

【摘要】：为探究石油炼化废水对ANAMMOX过程中脱氮性能的影响,对AAOB细菌混培物进行驯化试验,并利用MPN-PCR技术对驯化前后的主要菌群进行计数。结果表明,石油炼化废水添加比例为50%时,NH_4~+-N和NO_2~--N的平均去除负荷分别为3.535、5.442 kg/(m~3·d),平均理论COD差值为16.67 mg/L;石油炼化废水添加比例为100%时,NH_4~+-N和NO_2~--N的平均去除负荷分别为未添加的17.4%和62.5%。AAOB细菌混培物对石油炼化废水存在一定的适应性,当废水添加比例为50%时增加了系统的稳定性和有效脱氮效果,驯化前后AAOB和DNB菌群数目变化较大,并且对菌群生化活性的影响方式不同;尽管驯化过程中优势菌群逐渐发生变化,但二者的协同脱氮作用一直存在。
[Abstract]:In order to investigate the effect of petroleum refinery wastewater on the denitrification of ANAMMOX, the mixed culture of AAOB bacteria was acclimated, and the main bacteria groups before and after acclimation were counted by MPN-PCR technique. The results show that the average removal load of NH_4~ N and NO_2~--N is 3.535 kg/ and 5.442 kg/, respectively, and the average theoretical COD difference of mt3 d), is 16.67 mg/L; when the proportion of petroleum refinery wastewater is 50. The average removal loads of NH_4~ N and NO_2~--N were 17.4% and 17.4% respectively, and the mixture of 62.5%.AAOB bacteria had some adaptability to petroleum refinery wastewater when the proportion of petroleum refinery wastewater was 100%, respectively, when the proportion of petroleum refining wastewater was 100%, the average removal load of NH_4~ N and NO_2~--N was 17.4% and 62.5%.AAOB respectively. The stability of the system and the effective denitrification effect were increased when the proportion of wastewater was 50. The number of AAOB and DNB changed greatly before and after acclimation, and the effects on the biochemistry activity of the bacteria were different. Although the dominant flora changed gradually during acclimation, the synergistic denitrification between them existed all the time.
【作者单位】：北京工业大学水质科学与水环境恢复工程北京市重点实验室;中咨华科交通建设技术有限公司;中国石油集团公司安全环保技术研究院;北京市市政工程设计研究总院有限公司;
【分类号】：X742

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