厌氧氨氧化颗粒污泥的培养及影响因素*

蔡庆 黄阳全 罗乐 周皓

(重庆工程职业技术学院矿业与环境工程学院 重庆 402260)



厌氧氨氧化颗粒污泥的培养及影响因素*

蔡庆 黄阳全 罗乐 周皓

(重庆工程职业技术学院矿业与环境工程学院 重庆 402260)

厌氧氨氧化 颗粒污泥 N2H4COD Fe3+

0 引言

1 材料与方法

1.1 实验装置、用水及接种污泥

1.2 实验方案

1.3 检测项目及分析方法

2.1 反应器运行情况

反应器启动过程中污泥的粒径分布见图2。接种污泥体积平均粒径为74 μm，见图2(a)；在第31 d污泥体积平均粒径增长到109 μm，见图2(b)；在第93 d污泥体积平均粒径增长到307.5 μm，见图2(c)，此时反应器中的污泥为絮状和颗粒状污泥混合物。强烈的水力选择压力对颗粒污泥的形成至关重要[15]；但水力选择压力又不能太高，否则会使反应器内ANAOB大量流失，本文通过保持合适升流速率(4.5 m/h)[8]成功培养得到厌氧氨氧化絮状和颗粒状污泥混合物。Vlaeminck等[16]采用类似的条件在SBR中培养出CANON颗粒和絮状污泥的混合物，颗粒污泥占污泥VSS体积的57%，平均粒径1.8 mm；絮状污泥占污泥VSS体积的43%。

(a)反应器中质量浓度变化情况

(b)总氮去除效率及去除速率情况

(a)第1 d

(b)第31 d

(c)第93 d

2.3 N2H4对厌氧氨氧化的影响

图4 不同质量浓度N2H4对厌氧氨氧化的影响

2.4 COD对厌氧氨氧化的影响

图5 不同质量浓度COD对厌氧氨氧化的影响

2.5 Fe3+对厌氧氨氧化的影响

图6 不同浓度的Fe3+对厌氧氨氧化的影响

3 结论

(1)在EGSB反应器中成功启动厌氧氨氧化过程,总氮去除速率和总氮去除效率分别达到0.931±0.006 kg/(m3·d)和90.5%±0.8%。培养得到厌氧氨氧化颗粒污泥和絮状污泥混合物，污泥平均粒径为307.5 μm。

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The Cultivation and the Effecting Factors of ANAMMOX Granular Sludge

CAI Qing HUANG Yangquan LUO Le ZHOU Hao

(SchoolofMiningandEnvironmentalEngineering,ChongqingVocationalInstituteofEngineeringChongqing402260)

anaerobic ammonium oxidation granular sludge N2H4COD Fe3+

重庆市教委科学技术研究项目(KJ1403202)。

蔡庆,男, 1985年生，湖北荆门人,博士,讲师,主要从事废水处理理论与技术方面的研究。

2015-05-28)