水平流人工快速渗滤系统对岩源性磷拦截效果研究

选取沸石,陶粒,无烟煤及其组合作为水平流人工快速渗滤系统的填料,进行不同进水水质和水力负荷下对岩源性磷拦截效果的研究。结果表明:相同运行条件下,单一填料沸石对悬浮颗粒物和岩源性磷的去除效果最好,平均值分别达到了90.47%、39.91%;组合填料的运行稳定性更好,且水力负荷为0.2 cm/s时效果最好,最高可达82.85%和46.18%;长期的运行模拟中发现系统的堵塞现象,在实际应用中要充分考虑填料的更换和再生的可操作性,保证系统运行的稳定高效。

Removing Rock Phosphorus by Horizontal-flow Constructed Rapid Infiltration System

Zeolite,ceramisite and anthracite were used respectively,as well as the combined group of above materials with 1∶1∶1 proportion,as the filter medium in a horizontal-flow constructed rapid infiltration system in a lab-scale experiment to remove rock phosphorus with varied influent concentrations and hydraulic loadings.The result of the experiment,when comparing the effects of different filter media,showed that under the same operation condition zeolite had the best removing rate in terms of SS and rock phosphorus.Clogging of the filter media was found during the long-term operation,so adequate replacement and regeneration of the filter should be taken into consideration to guarantee steady and efficient working condition of the rapid infiltration system.