净水技术2008，27（6）：46-49WaterPurificationVol.27,NoTechnology.6,2008"!!!!!!"!!!!!!"设备与材料!!"大薸和海芋对池塘水净化作用研究王国惠(中山大学环境科学与工程学院，广东广州510275)摘要研究了大薸和海芋对池塘水中氨氮和化学需氧量的去除作用结果显示两种植物对均有明（NH3-N）（CODCr）。，NH3-N显的去除效果曝气条件下处理后的去除率分别达和净去除率分别为和非曝。，3d，NH3-N99.19%99.11%，70.51%70.44%。气条件下两种植物对的去除率也很高经大薸处理后的去除率达净去除率为经海芋处，NH3-N。4d，NH3-N98.71%，79.09%；理后的去除率达净去除率为大薸和海芋对也有较好的去除效果曝气条件下大薸和海5d，NH3-N99.21%，71.85%。CODCr。，芋对的去除率分别达和非曝气条件下去除率分别达和由此可见大薸和海芋作为CODCr88.65%82.98%；，73.29%73.30%。，水体污染修复植物具有良好的应用前景。关键词大薸海芋植物修复氨氮CODCr中图分类号：X524文献标识码：A文章编号：1009-0177（2008）06-0046-04StudyonthePondWaterPurificationEffectbyPistiaStratiotesandAlocasiaMacrorrhizaWANGGuo-hui(SchoolofEnviromentalSciencesandengineering,ZhongshanUniversity,Guangzhou510275,China)AbstractTheremovaleffectsofammonia-nitrogen(NH3-N)andchemicaloxygendemand(CODCr)inthepondwaterbyPistiastra-tiotesandAlocasiamacrorrhizawerestudied.TheresultsindicatedthatbothpistiastratiotesandalocasiamacrorrhizacouldremoveNH3-Neffectively.After3-daytreatmentunderaerationcondition,theremovalratesofNH3-Nreached99.19%and99.11%respec-tively,andthenetremovalratesreached70.51%and70.44%,respectively.TheremovalratesofNH3-Nwithoutaerationalsoreachedhighlevel.After4-daytreatmentbypistiastratiotes,theremovalrateandnetremovalrateofNH3-Nreached98.71%and79.09%respectively.After5-daytreatmentbyalocasiamacrorrhiza,theremovalrateandnetremovalrateofNH3-Nreached99.21%and71.85%respectively.BothplantscanalsoremoveCODCreffectively.Underaerationcondition,pistiastratiotesandalocasiamacr-orrhizarespectivelyremoved88.65%and82.98%ofCODCr.Withoutaeration,theremovalratereached73.29%and73.30%re-spectively.Thusitcanbeseenthatpistiastratiotesandalocasiamacrorrhizahavegoodapplicationprospectasremediationplantsforwaterpollution.KeywordspistiastratiotesalocasiamacrorrhizaphytoremediationNH3-NCODCr大薸(Pistiastratiotes)又名“肥猪草”、“水浮莲”、莲和大薸，分别处理牛奶场、垃圾填埋厂的废水，对“水白菜”，南星科大薸属，多年生浮水草本，性喜高硝酸盐氮和磷有较好的去除效果。大薸对高浓度污温、高湿，可直接漂浮于水面生长，根须深入水体中，水也有很强的净化作用。Sooknah