_人工湿地净化造纸废水尾水及优势植物筛选

第8卷第9期环境工程学报Vol．8，No．92014年9月ChineseJournalofEnvironmentalEngineeringSep．2014人工湿地净化造纸废水尾水及优势植物筛选张水丽1范立维1*陈嫩清2黄晓芬1赵烨1海热提3(1．福建农林大学资源与环境学院，福州350002;2．福安市环境卫生管理处，福安355000;3．北京化工大学环境科学与工程技术中心，北京100029)摘要通过象草、灯芯草、水葱、风车草4种植物人工湿地系统对造纸废水的处理，探讨了湿地系统对COD、NH+4-N和TP的去除能力，考察了湿地植物的净化作用与效果。结果表明，植物的引入能显著提高湿地系统对造纸废水的处理效果;植物人工湿地系统中COD、NH+4-N和TP去除率均随水力停留时间的延长而增加;4种植物人工湿地系统对COD去除效果均较好，其中水葱湿地系统最佳，COD去除率可达98%以上;水葱和灯芯草湿地系统对NH+4-N和TP的去除效果较好，其去除率分别可达85%和80%以上。综合比较4种植物的综合净化能力，水葱和风车草最好，灯芯草次之，象草最差，水葱和风车草是人工湿地处理造纸废水的适宜选择。关键词人工湿地造纸废水尾水效率优势植物中图分类号X703文献标识码A文章编号1673-9108(2014)09-3718-07Purificationofpapermakingtail-waterbyconstructedwetlandsandthescreeningofdominantwetlandplantsZhangShuili1FanLiwei1ChenNenqing2HuangXiaofen1ZhaoYe1HaiＲeti3(1．CollegeofＲesourceandEnvironmentalScience，FujianAgricultureandForestryUniversity，Fuzhou350002，China;2．EnvironmentalSanitationManagementOfficeofFuanCity，Fuan355000，China;3．CenterofEnvironmentalScienceandTechnology，BeijingUniversityofChemicalTechnology，Beijing100029，China)AbstractThepurificationofpapermakingtail-waterwasstudiedinthefourkindsofconstructedwetlandsystemsplantingwithPennisetumpurpureum，Juncuseffuses，ScirpusvalidusVahlandCyperusalternifolius，re-spectively．ThetreatmentperformancesofthewetlandsforCOD，NH+4-NandTPandthepurificationabilitiesofthewetlandplantswereilluminatedbythelaboratoryexperiments．Theresultsshowthattheplantationoftheplantsisbeneficialtothetreatmentofthetail-waterinthewetlands．TheremovalratesofCOD，NH+4-NandTPinthewastewaterincreasewiththeprolongingofthehydraulicresidenttimeinthesystems．CODinthetail-watercanbeefficientlyremovedbythefourplantedconstructedwetlandsandthehighestCODremovalrateover98%isobtainedinthewetlandplantingwithScirpusvalidusVahl．ThewetlandswithScirpusvalidusVahlorwithCyperusalternifoliuscaneffectivelypurifyNH+4-NandTP，andtheirremovalratescanreachtoover85%and80%，respectively．Basedonthecomprehensiveanalysis，thepurificationabilityofPennisetumpurpureumislowestamongthefourplantsandthatofJuncuseffusestakesthesecondplace;Scirpusv