| 基于CANON工艺的新型HABR反应器生物脱氮性能研究 |
| 摘要点击 2238 全文点击 882 投稿时间：2015-12-01 修订日期：2016-02-26 |
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| 中文关键词 新型复合式折流板反应器 全程自养脱氮 亚硝化菌 厌氧氨氧化菌 |
| 英文关键词 hybrid anaerobic baffled reactor (HABR) completely autotrophic nitrogen removal over nitrite (CANON) AOB AnAOB |
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| 中文摘要 |
| 采用新型复合式折流板反应器(HABR)启动及运行全程自养脱氮(CANON)工艺.通过缩短水力停留时间(HRT)的方式提高进水总氮负荷启动反应器,反应器运行成功后,考察反应器沿程氮素、电导率、pH值及MLSS的变化规律,并对反应器内微生物种群形态结构及空间分布进行分析.结果表明,当进水NH4+-N平均浓度为40 mg·L-1时,经过89 d的连续运行,新型HABR反应器实现了快速启动,并能稳定运行至187 d,稳定运行期出水NH4+-N和TN浓度分别稳定在2 mg·L-1和10 mg·L-1以下,去除率分别达到96%和83%以上,NRR达到0.15 kg·(m3·d)-1.稳定运行阶段,NH4+-N与TN浓度在反应器沿程逐渐降低,NO2--N和NO3--N的生成量一直维持在较低浓度.第1个单元格脱氮效率最高,通过SEM和FISH分析表明,在第1个单元格中存在丰富的功能菌种亚硝化菌(AOB)和厌氧氨氧化菌(AnAOB). |
| 英文摘要 |
| The startup of novel hybrid anaerobic baffled reactor (HABR) and the feasibility of completely autotrophic nitrogen removal over nitrite (CANON) process were studied. The reactor was operated by gradually decreasing HRT to improve total nitrogen load. After startup, the change of nitrogen concentrations, conductivity, pH and MLSS was measured along the reactor, and then the microbial morphology and spatial structure of bacteria were defined. The test results indicated several points:under the experimental condition of an average NH4+-N of 40 mg·L-1 in influent, the quick start-up process was successfully achieved by continuous operation within 89 days, and stabilized over 187 days. The average NH4+-N and TN concentrations of effluent were below 2 mg·L-1 and 10 mg·L-1 respectively, the average removal efficiencies of NH4+-N and TN reached above 96% and 83% respectively, and a NRR of 0.15 kg·(m3·d)-1 was obtained. During the stable phase, the concentrations of NH4+-N and TN gradually declined along the reactor, while the concentrations of NO2--N and NO3--N remained constant at relatively lower values. The highest nitrogen removal efficiency of ammonia occurred in compartment 1, and the reason was confirmed by SEM and FISH microbiological analysis that enriched functional bacteria of AOB and AnAOB coexisted in compartment 1. |
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