AOA-SBR工艺用于城市污水同步脱氮除磷

被引：4

作者：

侯金良

康勇

高永刚

机构：

[1] 天津大学化工学院

来源：

水处理技术 | 2007年 / 07期

关键词：

厌氧/好氧/兼氧工艺(AOA); 续批式反应器(SBR); 聚磷菌; 聚糖原菌; 反硝化聚磷菌;

D O I：

10.16796/j.cnki.1000-3770.2007.07.021

中图分类号：

X703 [废水的处理与利用];

学科分类号：

083002 ;

摘要：

以城市污水为研究对象,考察了不同COD/N/P对厌氧/好氧/兼氧(AOA)-SBR工艺脱氮除磷效果的影响。经过3个月稳定运行,当COD:N:P=800:24:11时,AOA-SBR工艺对污水中有机物、氨氮和磷的去除率分别为100%、84%和93%。实验通过提高有机物浓度削弱聚磷菌(PAOs)与聚糖菌(GAOs)竞争底物的能力,抑制了PAOs好氧放磷速率。当COD=800mg/L时,GAOs和PAOs厌氧乙酸摄取量之比为1:9。此外,实验采用兼氧/好氧吸磷速率比,对反硝化聚磷菌数量(DNPAOs)进行估算,结果表明AOA-SBR工艺比值明显高于A2O和AO工艺。因此,通过调节进水有机物浓度,可使DNPAOs在AOA-SBR同步脱氮除磷过程中发挥重要作用。

引用

页码：78 / 81+94 +94

页数：5

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