污水处理中NaHCO_(3)对自养硝化菌富集效应影响的研究  

Study on NaHCO_(3) on Autotrophic Nitrifying Bacteria Enrichment Effect in Wastewater Treatment

作　　者：冯历[1] 胡筱敏[2] 田林锋 罗桂林[1] Feng Li;Hu Xiaomin;Tian Linfeng;Luo Guilin(Ningxia Polytechnic Institute,Shizuishan 753000,China;School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China;School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;Shizuishan City Environmental Monitoring Station,Shizuishan 753000,China)

机构地区：[1]宁夏理工学院,宁夏石嘴山753000 [2]东北大学资源与土木工程学院,辽宁沈阳110819 [3]同济大学环境科学与工程学院,上海200092 [4]石嘴山市生态环境监测站,宁夏石嘴山753000

出　　处：《环境科学与管理》2022年第10期84-88,共5页Environmental Science and Management

基　　金：宁夏回族自治区重点研发计划重大项目(2019BFG02028)。

摘　　要：实验以NaHCO_(3)为碳源,研究其对污水处理中硝化反应效果和自养硝化菌富集效果的影响特征。实验结果显示,投加NaHCO_(3)的反应器在进水氨氮浓度大于1100 mg/L时,出水氨氮浓度持续低于5 mg/L,出水氨氮稳定、浓度低。采用MiSeq高通量测序分析整个实验过程中微生物群落结构变化特征,结果表明,投加NaHCO_(3)的反应器中硝化菌Nitrosomonas相对丰度由0.2%增至45.2%,对比未投加NaHCO_(3)的反应器中硝化菌相对丰度由0.2%降至几乎检测不到。故NaHCO_(3)可以有效促进水体硝化细菌的富集,提高污水硝化能力。The effect of nitrification on wastewater treatment and enrichment of autotrophic nitrifying bacteria was studied by using NaHCO_(3) as carbon source.The experimental results showed that the ammonia concentration of influent in the reactor with NaHCO_(3) increased to 1100 mg/L.At the same time,the effluent ammonia nitrogen concentration was lower than 5 mg/L.The effluent ammonia nitrogen was stable and the concentration was low.The MiSeq high-throughput sequencing was used to analyze the microbial community structure changes during the whole experiment.The results showed that the Nitrosomonas relative to the nitrifying bacteria in the NaHCO_(3) reactor were relatively The abundance increased from 0.2%to 45.2%.Compared with the non-added NaHCO_(3),the relative abundance of nitrifying bacteria decreased from 0.2%to almost no detectable.NaHCO_(3) can effectively promote the enrichment of nitrifying bacteria in water and improve the nitrification capacity of wastewater.

关 键 词：硝化反应 硝化菌 富集 生物反应 

分 类 号：X703[环境科学与工程—环境工程]