聚硅硫酸铝铁抑制底泥磷释放的实验研究  

Study on control of phosphorus release from sediment by polysilicate aluminum ferric sulfate

作　　者：郑西来[1] 姜鲁青[1] 刘杰[1] 陈蕾[1] 伍成成[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,青岛266100

出　　处：《环境工程学报》2011年第8期1718-1722,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(40572140;40872150);青岛市水利科技攻关项目(QD200805)

摘　　要：通过室内模拟研究了各因素对聚硅硫酸铝铁(PSAFS)抑制底泥磷释放的影响,并探讨了利用PSAFS抑制底泥磷释放的可行性。研究表明,当Al/Fe摩尔比为4∶6,[Al,Fe]/[Si]摩尔比为1∶1,投加剂量2.5 mL/300 g,pH值为8时,PSAFS抑制底泥磷释放的效果最佳,稳定性最好。结果同时表明,在最佳条件下,空白实验上覆水中总磷(TP)累积释放浓度是投加PSAFS的2倍多,且空白实验TP累积释放浓度的波动性远大于投加PSAFS的样品。可见,PSAFS能有效抑制底泥磷释放,可为底泥磷污染控制技术提供新思路和新材料。Laboratory experiments were conducted to study the influence of various parameters to control phosphorus release from sediments by using PSAFS.And then the feasibility of phosphorus release control from sediments by using PSAFS was discussed.The study showed the best inhibition and stability by using PSAFS when the mol ratio of Al/Fe reached 4∶ 6,the mol ratio of / was 1∶ 1,the dose was 2.5 mL/300 g and pH was 8.Results also suggested that the cumulative release concentration of TP in blank test was more than double in the test which was added PSAFS,moreover,the volatility of the cumulative release concentration of TP in blank test was more than the sample which was added PSAFS.It could be clearly seen that PSAFS could effectively control the phosphorus release,which provides a new thinking and new materials for the technology of controlling phosphorus pollution in sediment.

关 键 词：聚硅硫酸铝铁 底泥 抑制 磷释放 

分 类 号：X524[环境科学与工程—环境工程]