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含表面活性剂的采油废水催化氧化处理

Keywords: 表面活性剂,采油废水,催化氧化,沸石

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Abstract:

对含有表面活性剂的废水(以下简称表活废水)进行了傅里叶红外光谱分析(FTIR),结果表明,废水中所含表面活性剂主要为环烷酸钠。采用次氯酸钙(Ca(ClO)2)和活性炭-Ni催化氧化处理,在Ca(ClO)2投加量为4500mg/L,活性炭-Ni投加量为7000mg/L时,反应90min,出水COD为158.91mg/L,去除率达62.92%。催化氧化出水经沸石吸附处理,在pH为6.85,吸附时间为2h,沸石投加量为17g/L的条件下,吸附出水COD和油含量分别为88.92mg/L和2.53mg/L,去除率分别为45.65%和90.02%,均达到《污水综合排放标准(GB8978-1996)》的一级标准要求。催化剂活性炭-Ni和吸附剂沸石均具有较稳定的活性,在重复使用20次后,出水COD的去除率仅分别降低了1.16%和1.32%。

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