盐度对活性污泥去除NH3-N及COD的影响研究

Liyu CHEN, Sitong LI,Erming OUYANG,Zhihao LUO,Caixia WEI

Technology of Water Treatment（2019）

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Abstract

利用序批式活性污泥法反应器对活性污泥进行盐度梯度驯化培养,研究不同盐度条件下活性污泥的处理效果.结果表明,实验过程中COD去除率保持在95％以上.氨氮去除率在盐度小于12g/L的条件下经过驯化能够稳定80％左右,盐度为6g/L时氨氮去除率最大达到89.99％;当盐度超过12g/L时,系统对氨氮的去除受到明显抑制,氨氮去除率在盐度为18g/L时仅为42.46％.盐度对氨氮去除率的影响较COD去除率的影响更大.经过50余天的培养,污泥的MLSS的质量浓度从3.12 g/L增大到了5.43 g/L,污泥容积指数从90.06 mL/g下降至38.31 mL/g,污泥沉降性能变好.

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