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重金属杂质对磷酸铵镁结晶法处理制药废水的影响 被引量：2

Effect of heavy metal impurities on struvite precipitation for treatment of pharmaceutical wastewater
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摘要 磷酸铵镁沉淀法处理废水时常受众多因素影响,其中重金属类杂质对该过程影响较大。实验研究了Mn2+、Cu2+杂质存在条件下,用该法去除制药废水中PO3-4、NH+4污染物,同时,用XRD、XRF、SEM等手段研究了所得鸟粪石晶体特征。结果表明,pH为9.5时,Mn2+、Cu2+杂质存在条件下,PO3-4去除率分别为88%和85%,投加晶种有利于回收特定晶形鸟粪石,Cu2+对磷酸铵镁结晶过程的影响较Mn2+存在时显著。 Application of struvite precipitation in treating wastewater is influenced by many factors, especially heavy metal impurities which play an important role in the process of crystallization. Considering this problem, we investigated pollutants removal efficiency of PO4^3- and NH4 in pharmaceutical wastewater containing Mn2＋ and Cu2＋ impurities. XRD, XRF, SEM techniques were used to analyze the strnvite product seperated from the streams. The results indicated that PO4^3- removal efficiency of 88% and 85% were obtained in the presence of Mn2 ＋ and Cu2＋ impurities, respectively （pH = 9.5）. Crystal seed dosing benefits recovering struvite with special structure, whereas Cu2＋ showed a distinct impact of interference on struvite crystallization compared with Mn2＋ .
作者 王国文 王栋 王明明 徐晓晨 杨凤林
机构地区 大连理工大学环境学院 辽宁核与辐射监测中心
出处 《环境工程学报》 CAS CSCD 北大核心 2013年第12期4866-4868,共3页 Chinese Journal of Environmental Engineering
基金 国家水体污染控制与治理科技重大专项(2008ZX07208-003-002)
关键词 磷酸铵镁 杂质 制药废水 晶种 magnesium ammonium phosphate impurities pharmaceutical wastewater crystal seed
分类号 X787 [环境科学与工程—环境工程]
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参考文献13

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同被引文献17

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环境工程学报
2013年 第12期

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