摘要
采用生物聚合硫酸铁絮凝剂对低浓度含铀废水进行絮凝试验研究,考察U(Ⅵ)溶液pH、絮凝剂投加量以及U(Ⅵ)初始浓度对絮凝效果的影响。结果表明,反应最佳pH范围在5~7,反应平衡时间为5min,其絮凝过程符合Lagergren准二级反应动力学模型。含铀废水经生物聚合硫酸铁絮凝处理过后,残余铀浓度低于《铀加工与燃料制造设施辐射防护规定》(EJ 1056—2005)中的排放限值(0.05mg/L)。
Bio-polymerized ferric sulfate flocculant was prepared by microbiological method to flocculate low-concentration uranium wastewater.Effects of pH value of U（Ⅵ）solution,flocculant dosage and initial concentration of U（Ⅵ）on flocculation effect were investigated.The results show that the optimum pH value of reaction is 5～7,and reaction equilibrium time is 5 min.Process of flocculation follows Lagergren quasi-secondary reaction kinetics model.After flocculation by bio-polymerized ferric sulfate,the residual uranium concentration is lower than the emission limit in the Radiation Protection Regulations for Uranium Processing and Fuel Manufacturing Facilities（EJ 1056-2005,0.05 mg/L）.
作者
宫志恒
郭怡秦
郭亚丹
王学刚
李鹏
高柏
GONG Zhi-heng;GUO Yi-qin;GUO Ya-dan;WANG Xue-gang;LI Peng;GAO Bai(School of Water Resources ＆ Environmental Engineering,East China University of Technology,Nanchang 330013,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2018年第11期71-75,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
江西省自然科学基金项目(20171BAB213019)
江西省博士后科研择优资助项目(2016KY33)
东华理工大学研究生创新项目(YC2017-S281
DHYC-201818)
关键词
生物聚合硫酸铁
铀
絮凝
动力学
bio polymeric ferric sulfate
uranium
flocculation
kinetics
