主题：【已应助】求助4篇文献，谢谢

【序号】：1
【作者】：Zhu, T., Jenssen, P. D., Maehlum, T. and Krogstad, T. 
【题名】：Phosphorus sorption and chemical characteristics of lightweight aggregates (lwa) - potential filter media in treatment wetlands.
【期刊】：Water Science and Technology
【年, 卷(期), 起止页码】：1997. 35(5):103-108.       
【全文链接】：http://www.sciencedirect.com/science/article/pii/S0273122397000589

【序号】：2
【作者】：Drizo, A., Frost, C. A., Smith, K. A. and Grace, J. 
【题名】：Phosphate and ammonium removal by constructed wetlands with horizontal subsurface flow, using shale as a substrate.
【期刊】：Water Science and Technology
【年, 卷(期), 起止页码】：1997. 35(5):95-102.       
【全文链接】：http://www.sciencedirect.com/science/article/pii/S0273122397000577

【序号】：3
【作者】：Vohla, C., K?iv, M., Bavor, H. J., Chazarenc, F. and Mander, ü. 
【题名】：Filter materials for phosphorus removal from wastewater in treatment wetlands—a review.
【期刊】：Ecological Engineering
【年, 卷(期), 起止页码】：2011. 37(1):70-89.
【全文链接】：http://www.sciencedirect.com/science/article/pii/S0925857409002419

【序号】：4
【作者】：Cooke, J. G. 
【题名】：Phosphorus removal processes in a wetland after a decade of receiving a sewage effluent.
【期刊】：Journal of Environmental Quality
【年, 卷(期), 起止页码】：1992. 21(4):733-739.       
【全文链接】：https://dl.sciencesocieties.org/publications/jeq/abstracts/21/4/JEQ0210040733