改性二次锶渣吸附去除废水中的磷  

Phosphorus removal in wastewater with modified secondary strontium residual

作　　者：周乐[1] 徐龙君 李礼[1,2] 谢太平[1] 

机构地区：[1]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [2]重庆市环境监测中心,重庆401147

出　　处：《环境工程学报》2013年第10期3967-3971,共5页Chinese Journal of Environmental Engineering

基　　金：重庆市科技攻关计划项目(2010AC7180)

摘　　要：以改性二次锶渣为吸附剂,研究了吸附时间、吸附剂投加量、磷初始浓度和pH值对废水中磷去除效果的影响。结果表明,当总磷浓度为10 mg/L,pH为7、二次锶渣投加量为15 g/L时,90 min内就可使废水中磷的去除率达到95%以上,总磷浓度低于污水综合排放标准的一级标准;改性二次锶渣对磷的吸附符合Langmuir等温吸附模型及准二级动力学模型。The effects of adsorption time, adsorbent dosage, initial phosphorus concentration and pH on dephosphorization of wastewater with the modified secondary strontium residual （MSSR） were investigated. The results showed that when the concentration of residual phosphorus in wastewater was 10 mg/L, the removal rate of phosphorus was over 95% under the conditions of pH of 7, the MSSR/solution ratio of 15 g/L, and adsorption time of 90 min. The concentration of residual phosphorus in wastewater was lower than primary standard of inte- grated wastewater discharge. The adsorption process accorded with the Langmuir isotherm model and the pseudo- second-order kinetics.

关 键 词：二次锶渣 改性 除磷 废水 

分 类 号：X703[环境科学与工程—环境工程]