| 电厂含砷废水的混凝处理研究 |
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| 引用本文： | 王淑勤,李蔷薇.电厂含砷废水的混凝处理研究[J].华北电力大学学报,2007,34(1):137-140. |
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| 作者姓名： | 王淑勤 李蔷薇 |
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| 作者单位： | 华北电力大学,环境科学与工程学院,河北,保定,071003;华北电力大学,环境科学与工程学院,河北,保定,071003 |
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| 摘 要： | 以电厂中的含砷废水为研究对象,考察了pH值、沉降时间、投加量、铁铝硅摩尔比对聚硅酸硫酸铁铝混凝处理含砷废水的影响。采用Ferron逐时络和比色法测定了聚硅酸硫酸铁铝中铁、铝的形态分布,对聚硅酸硫酸铁铝进行了透射电镜分析,并对其除砷前后进行了红外光谱分析,讨论了其除砷机理。实验结果表明,在pH值为7,铁铝硅摩尔比为1:1,沉降时间为10min,混凝剂投加量达100mg/L时,聚硅酸硫酸铁铝的除砷率为90%,且沉降时间快,残余色度低。
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| 关 键 词： | 聚硅酸硫酸铁铝 含砷废水 混凝 机理 |
| 文章编号： | 1007-2691(2007)01-0137-04 |
| 修稿时间： | 2006年5月1日 |
Disposal of arsenic wastewater by coagulation in power plant |
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| WANG Shu-qin,LI Qiang-wei.Disposal of arsenic wastewater by coagulation in power plant[J].Journal of North China Electric Power University,2007,34(1):137-140. |
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| Authors: | WANG Shu-qin LI Qiang-wei |
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| Abstract: | The disposal of arsenic wastewater in the power plant is studied.The effect of pH,settling time,dosage and molar ratio on polysilicate ferric aluminum sulfate(PSFAS) for disposal of arsenic wastewater is investigated.The species in PSFAS are determined with Ferron-timed complex colorimetric method.The PSFAS is characterized by the infrared spectrometer(IR) and transparent electron microscopy(TEM).The arsenic removal mechanisms of PSFAS are discussed.It shows that the arsenic removal efficiency of PSFAS reaches over 90% with the pH of7.0,settling time of 10min,dosage of 100mg/L and molar ratio(Fe3 Al3 ) /SiO2 of 1: 1.Experimental results show that the PSFAS is effective. |
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| Keywords: | polysilicate ferric aluminum sulfate arsenic wastewater coagulation mechanism |
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