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聚硅酸复合絮凝剂

Petrochemical Technology & Application(2018)

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Abstract
以硅酸钠为原料,在常温、酸性条件下,采用酸化掺杂无机盐的方法制备了聚硅酸絮凝剂.将其分别与聚铝(PA)、聚铁(PF)和聚丙烯酰胺(PAM,正负离子)复合,用以处理炼油厂循环水的排水.结果表明:单一絮凝剂对循环水排水中油和浊度的处理效果不理想.除聚硅酸-PF复合絮凝剂外,其他3种均有较好的除浊效果,浊度去除率在90%以上且稳定.油的脱除效果由高到低依次为聚硅酸-PA复合絮凝剂、聚硅酸-PF复合絮凝剂、聚硅酸-PAM(负离子)复合絮凝剂、聚硅酸-PAM(正离子)复合絮凝剂.前者絮凝效果为最优,当聚硅酸/PA最佳体积比为0.6:0.4时,油和浊度的去除率分别为97.11%,97.67%.
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