| 内环境调节层对厌氧生物反应器填埋场中氮转化的影响 |
| 摘要点击 1703 全文点击 675 投稿时间：2016-06-08 修订日期：2016-11-07 |
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| 中文关键词 内环境 调节层 氮 厌氧生物反应器填埋场 转化 |
| 英文关键词 interior environment environment adjustment layers nitrogen anaerobic bioreactor landfill transformation |
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| 中文摘要 |
| 为探究内环境调节层对厌氧生物反应器填埋场内环境和氮组分的长效影响，特设矿化垃圾+重质碳酸钙、矿化垃圾+天然沸石这2种内环境调节层分别置入模拟反应器R2和R3中，同时设R1（不含内环境调节层）作为对照，监测分析390 d内固相垃圾和渗滤液中氮组分的变化.结果表明，R1、R2和R3中pH、碱度、氧化还原电位（Eh）、含水率（MS）的大小关系分别为pH（R2）> pH（R3）> pH（R1）、碱度（R2）> 碱度（R3）> 碱度（R1）、Eh（R2）< Eh（R3）< Eh（R1）、MS（R3）> MS（R2）> MS（R1）.R1、R2和R3中垃圾全氮降解转化率为79.2%、82.3%和88.5%，氨氮为48.3%、60.1%和67.7%，硝态氮为38.5%、44.2%和53.4%；渗滤液中总氮、氨氮和硝态氮的浓度对比分别为TN（R3）< TN（R2）< TN（R1）、NH4+-N（R3）< NH4+-N（R1）< NH4+-N（R2）和NO3--N（R3）< NO3--N（R2）< NO3--N（R1）.总体看来，矿化垃圾+重质碳酸钙、矿化垃圾+天然沸石组成的内环境调节层均能长期优化内环境，为氮的降解转化提供有利条件，而矿化垃圾+天然沸石不仅能促进垃圾和渗滤液中氮组分的降解转化，还能一定程度上控制渗滤液循环造成的氨氮累积. |
| 英文摘要 |
| To investigate the perennial effect of environment adjustment layers on the interior environment and nitrogen transformation in anaerobic bioreactor landfills, three sets of simulated anaerobic bioreactor landfills and two kinds of environment adjustment layers of mineralized refuse with heavy calcium carbonate (R2) and mineralized refuse with natural zeolites (R3) were designed and established. The degradation and transformation of nitrogen in waste and leachate had been monitored for 390 days. The results showed that, the value orders of pH, alkalinity, oxidation reduction potential and moisture content (MS) were pH(R2) > pH(R3) > pH(R1), alkalinity (R2) > alkalinity (R3) > alkalinity (R1), Eh(R2) < Eh(R3) < Eh(R1) and MS(R3) > MS(R2) > MS(R1). In R1, R2 and R3, the degradation rates of total nitrogen, ammonia nitrogen, nitrate nitrogen in waste were 79.2%, 82.3% and 88.5%, 48.3%, 60.1% and 67.7%, 38.5%, 44.2% and 53.4%, respectively. Concentration comparison results of total nitrogen, ammonia nitrogen and nitrate nitrogen in leachate were TN(R3) < TN(R2) < TN(R1)、NH4+-N(R3) < NH4+-N(R1) < NH4+-N(R2)和NO3--N(R3) < NO3--N(R2) < NO3--N(R1). Additionally, both of mineralized refuse with heavy calcium carbonate and mineralized refuse with natural zeolites could long-term adjust and optimize the interior environment of anaerobic bioreactor landfills for the degradation and conversion of nitrogen. Mineralized waste with natural zeolite could not only promote the degradation and transformation of nitrogen components in waste and leachate, but also control the accumulation of ammonia nitrogen through leachate recirculation. |
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