活性碳纤维填料床反应器硝化性能研究

The nitrification performance of active carbon fiber packed-bed reactor

构建新型材料活性碳纤维（active carbon fiber,ACF）填料床反应器,在温度25~27℃,利用人工污水进行挂膜,测定基本水质指标及生物膜氧吸收速率（oxygen uptake rate,OUR）,研究反应器稳态后水力停留时间（hydraulic retention time,HRT）,进水NH4＋-N负荷以及CODMn/NH4＋-N变化对于ACF填料滤器的影响。结果表明,ACF填料滤器最佳HRT时间为3.1h,NH4＋-N去除率最高达到79.41%,此时氨氧化菌OUR平均为1.24mg O2/（g.h）。控制进水NH4＋-N负荷分别为0.05、0.09、0.24、0.44g/（kg.d）,最佳进水NH4＋-N负荷为0.09g/（kg.d）,NH4＋-N去除率可达80.21%,此时氨氧化菌OUR平均为1.42mgO2/（g.h）。CODMn/NH4＋-N比在2至6时,随着CODMn/NH4＋-N比升高,NH4＋-N去除率逐渐降低,而CODMn去除率明显上升。在CODMn/NH4＋-N比为2时,NH4＋-N去除率最高,为80.96%,此时氨氧化菌OUR平均为1.40mgO2/（g.h）;在CODMn/NH4＋-N比为6时,CODMn去除率达到最高,为65.01%,此时异养菌OUR平均为2.02mg O2/（g.h）。

A new material activated carbon fiber（ACF）packed bed reactor has been developed to treat artificial sewage at 25-27 ℃.Hydraulic retention time（HRT）,influent of NH4＋-N loading rate and CODMn/NH4＋-N were changed to investigate the influence on reactor by measuring basic water quality indicator and oxygen uptake rate（OUR）.The results demonstrated：NH4＋-N removal rate was up to 79.41% and the average OUR of anammox bacteria was 1.24 mgO2/（g·h）when the best HRT of ACF reactor was 3.1 h.When the influent NH4＋-N loading rate were：0.05,0.09,0.24,0.43 g/（kg·d）,the best water NH4＋-N loading rate was 0.09 g/（kg·d）and the NH4＋-N removal rate was 80.21%,the average OUR of anammox bacteria was 1.42 mgO2/（g·h）.Whlie the CODMn/NH4＋-N rose from 2 to 6,NH4＋-N removal rate decreased gradually and the CODMn removal rate increased remarkablely.When CODMn/NH4＋-N was 2,NH4＋-N removal rate reached 80.96% and OUR of anammox bacteria was 1.40 mgO2/（g·h）;Meanwhile,CODMn removal rate was up to 65.01% and OUR of heterotrophic bacteria was 2.02 mgO2/（g·h）,when CODMn/NH4＋-N was 6.