纳米ZrO2-聚丙烯酰胺与混凝技术联用处理铬和氟污染水实验研究  

Experimental Study on Treatment of Chromium and Fluoride Contaminated Water by Nano ZrO2-Polyacrylamide Combined with Coagulation Technology

作　　者：张颖 洪文清 李致格 张磊 Zhang Ying;Hong Wenqing;Li Zhige;Zhang Lei

机构地区：[1]滁州学院土木与建筑工程学院,安徽滁州239000 [2]北京世源希达工程技术有限公司,北京100080

出　　处：《滁州学院学报》2020年第5期10-15,共6页Journal of Chuzhou University

基　　金：国家自然科学基金资助项目“应急引水工程对巢湖微生态系统结构及稳定性的影响机制”(41601573);安徽省重点研究与开发计划项目“湖库型饮用水水源地农业面源污染负荷评估及控制研究”(202004I07020010);安徽省大学生创新创业训练计划项目“钢渣-偶联剂改性粉煤灰联用处理含铬废水研究”(2020CXXL134)。

摘　　要：为高效解决某地区中超标污染物F^-、Cr(Ⅵ)对地下水造成的危害,通过室内静态实验方法,利用自制纳米ZrO2-聚丙烯酰胺杂化材料与混凝技术联用处理含F^-、Cr(Ⅵ)地下水,分析了杂化材料投加量、聚合氯化铝投加量、反应时间、反应温度、pH值对除F^-、Cr(Ⅵ)、浊度的影响,对去除机理进行了探讨。结果表明:处理100 mL含F^-5mg/L、Cr(Ⅵ)10 mg/L的地下水,在杂化材料投加量为4.15 g、吸附反应30 min、pH=7、聚合氯化铝投加量为30 mg时、沉降15min效果最佳,对F^-、Cr(Ⅵ)去除率分别为91.7%、99.98%,出水浊度满足要求;吸附动力学拟合结果表明,纳米ZrO2-聚丙烯酰胺杂化材料对F^-、Cr(Ⅵ)的吸附均符合准二级动力学方程、吸附等温线符合Freundlich等温线。试验结果为解决含有该类污染物的矿区地下水问题提供有力参考。To solve the harm caused by excess pollutant F^-and Cr(Ⅵ)to groundwater,the groundwater was treated by self-made nano ZrO2-polyacrylamide hybrid material combined with coagulation technology.The effects of the dosage of hybrid material,polyaluminium chloride dosage,reaction time,reaction temperature,pH value on the removal F^-and Cr(Ⅵ)and turbidity were analyzed,and the removal mechanism was discussed.The results showed that the treatment of 100 mL of groundwater containing F^-5mg/L and Cr(Ⅵ)10 mg/L was the best when the dosage of hybrid material was 4.15 g,the adsorption reaction was 30 min,pH=7,the dosage of polyaluminium chloride was 30 mg,the sedimentation was 15 min,the removal rate of F^-and Cr(Ⅵ)was 91.7%and 99.98%respectively,and the turbidity of effluent met the requirements.The adsorption kinetics fitting results showed that the adsorption of F^-and Cr(Ⅵ)by nano ZrO2-polyacrylamide hybrid materials was in accordance with the quasi-second-order kinetic equation,and the adsorption isotherm was in accordance with the freundlich isotherm.The experimental results provide a powerful reference for solving groundwater problems in mining areas containing such pollutants.

关 键 词：纳米ZrO2-聚丙烯酰胺 混凝 F^- Cr(Ⅵ) 

分 类 号：X703.1[环境科学与工程—环境工程]