不同填料处理污染河水的挂膜启动及抗冲击负荷性能

Effects of Biofilm Carriers on Start-Up and the Adaptability to the Shock Load of Bioreactors of Micro-Contamination River Water

DOI：10.3969/j.issn.1673-1689.2019.07.018

中文关键词: 不同填料 生物膜反应器 去除率 抗冲击负荷能力

英文关键词: two kinds of materials,bioreactors,removal efficiencies,the adaptability to the shock load

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中文摘要:

为了比较悬浮填料和弹性填料的挂膜启动过程及抗冲击负荷能力，研究了接种河流底泥的两组生物膜反应器的挂膜速度以及不同水力停留时间下处理污染河水的效率。结果表明，悬挂弹性填料的生物膜反应器的NH4^{+- N去除率比填充悬浮填料的生物膜反应器提前4 d挂膜成熟，挂膜成熟后两组反应器的NH4+-N和CODMn去除率均分别稳定在97%和80%以上；随着水力停留时间由14.80 h缩短至7.99 h，两组反应器NH4+-N平均去除率分别由98.18%、98.76% 降至78.32%、87.63%，CODMn平均去除率分别由84.52%、83.69%降至60.90%、64.71%；不同水力停留时间下弹性填料附着的生物膜具有更高的活性生物量，且生物膜镜检显示其生物膜结构更为致密；这说明，与悬浮填料相比，弹性填料在处理污染源水时能更快的实现挂膜启动并且具有较强的抗冲击负荷能力。}

英文摘要:

In order to compare the start-up period and the adaptability to the shock load of two lab-scale bioreactors of two kinds of materials employed as biofilm carrier inoculated sediments of river，the biofilm forming rate and the efficiencies of treating polluted river water at four different hydraulic retention time（HRT） were studied. The experimental results showed the startup speed of bioreactor filled with elasticity plastic was more rapid compared to the bioreactor filled with suspend packing，reducing the start-up period for its earlier maturation in removing NH4^{+-N；In the steady running stage，the removal efficiencies of NH4+-N and CODMn in two bioreactors both reached 97% and 80% respectively；The average removal efficiency of ammonia nitrogen dropped from 98.18%，98.76% to 78.32%，87.63% respectively，the average removal efficiency of CODMn dropped from 84.52%，83.69% to 60.90%，64.71% respectively with hydraulic retention time（HRT） shortened from 14.80 h to 7.99 h；The biofilm attaching on elasticity plastic filler has higher activity at four different hydraulic retention time（HRT） and the examination showed more impacted structure within biofilm attaching on elasticity plastic than the biofilm attaching on suspend packing at hydraulic retention time of 7.99 h；which showed the startup speed of elasticity plastic was more rapid compared to suspend packing and elasticity plastic filler had a stronger resistance to impact load than suspend packing in river water treatment.}

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