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共存杂质对磷酸铵镁结晶法回收磷的影响研究

Keywords: 磷回收,磷酸铵镁,共存杂质

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Abstract:

研究用磷酸铵镁(MAP)结晶法去除、回收废水中的磷,分析含磷废水中各类共存杂质对MAP法去除、回收磷的影响。结果表明,废水中无机钙离子的存在可提高磷的去除率,而大分子有机物杂质的存在会使磷的去除率显著降低,小分子有机物对磷的去除基本无影响。在反应体系中引入外来晶种烟煤、石英砂和铁屑可显著提高低浓度含磷废水磷的去除效率,其中烟煤作为晶种的效果最明显。

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