两种不同填料对ANAMMOX生物滤池的影响探究

Study on the influence of two different fillers on ANAMMOX biological filter

分别从NH+4-N吸附与实际运行两方面比较沸石与火山岩二者在ANAMMOX生物滤池中应用的适用性。结果表明,在T=30℃,pH=7.14的条件下,天然沸石、NaCl改性沸石和火山岩对NH+4-N的累积吸附率分别可以达到28.59%,46.50%和8.50%,累积吸附量分别可达到76.72,124.13,19.45 mg,沸石对NH+4-N的吸附能力远大于火山岩。分别以NaCl改性沸石和火山岩作为填料启动并运行生物滤池反应器,在进水和运行条件相同的情况下,火山岩生物滤池在室温阶段、低温阶段和温度恢复阶段的TN去除率、TN去除负荷以及短程硝化和厌氧氨氧化效果各方面都要优于沸石生物滤池。虽然沸石对NH+4-N的吸附能力优于火山岩,但实际运行中火山岩的效果要更好,因此更适合作为ANAMMOX生物滤池的填料。

The applicability of two common fillers,zeolite and volcanic rock,in ANAMMOX biofilters,the adsorption of NH-N and the actual operation of the two fillers were compared.The results showed that at T=30℃and pH=7.14,the maximum average cumulative adsorption efficiency of NH-N for natural zeolite,NaCl modified zeolite and volcanic rock reached 28.59%,46.50%and 8.50%,respectively.The maximum cumulative adsorption capacity was 76.72,124.13 and 19.45 mg,respectively.The adsorption capacity of zeolite for NH-N was much greater than that of volcanic rock.The bioreactor was started and operated with NaCl modified zeolite and volcanic rock as fillers,respectively.Under the same influent and operation conditions,the volcanic biological filter is superior to the zeolite biological filter in terms of TN removal efficiency,TN removal load,effects of short-cut nitrification and ANAMMOX at room temperature,low temperature and temperature recovery stages.The adsorption capacity of zeolite to NH-N was better than that of volcanic rock,while the effect of volcanic rock in actual operation was better,so it is more suitable for ANAMMOX biological filter.