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低温下ZCS工艺和改进式ZCS工艺脱氮效率研究及微生物特性分析

Keywords: 沸石,脱氮效率,PCR-DGGE

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Abstract:

考察冬季低温下沸石联合生物吸附再生工艺和改进式沸石联合生物吸附再生工艺对城市污水的脱氮效率,结果表明在HRT为3.5h下,ZCS工艺出水氨氮为11.65mg/L,总氮高于20mg/L。而相同条件下MZCS工艺氨氮出水为5.45mg/L,总氮去除率比原ZCS工艺提高了11%,均值为16.8mg/L。通过聚合酶链式技术,变性梯度凝胶电泳和电镜扫描技术发现两工艺微生物多样性、丰度高于传统活性污泥法,兼具活性污泥法和生物膜法的微生物特性。

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