人工湿地填料结构对水质净化效果影响研究

时页岩、粗砾石、铁矿石、麦饭石及页岩与麦饭石组合、页岩与粗砾石组合、粗砾石与铁矿石组合、粗砾石与麦饭石组合8种湿地填料的水质净化效果进行了比较研究,结果表明:在相同进水水质和水力负荷条件下,页岩填料对COD、TN、TP去除效果最好,其次为页岩与粗砾石组合填料,麦饭石去除效果较差.从材料成本及来源比较,粗砾石材料分布较广、成本较低,页岩次之.因此.从去污效果和建设成本综合考虑,页岩与粗砾石组合是人工湿地较为理想的填料.

Study on Water Purification of Different Stuffing Structure for Constructed Wetlands

The effect of eight filling such as shale,rough gravel,ironstone,hornblende and their combined structure on water purification was studied in this paper.The experiment results showed that the effect of the shale filling on removing of COD,TN,and TP is the best,the effect of the combinatorial filling of shale and rough gravel is the second better,and the effect of the hornblende is worst.Considering the physical properties and long-term operation of the substrates,the shale and course gravel as constructed w...