温度及粒径对几种人工湿地填料氨氮和磷吸附量的影响_郑向勇

EffectofTemperatureandParticleSizeonAmmoniaandPhosphorusAdsorptionQuantityofSeveralConstructedWetlandSubstratesXiangyongZHENG1*,FanCHEN1,MinjiaLU1,HairenYE1,SutingMA2,XinzeWANG3,HainanKONG31SchoolofLifeandEnvironmentalScience,WenzhouUniversity,Wenzhou,China2WenzhouEnvironmentProtectionDesignScientificInstitute,Wenzhou,China3SchoolofEnvironmentScienceandEngineering,ShanghaiJiaotongUniversity,Shanghai,ChinaEmail:oakinyard@163.com,chenfan710@163.com,lmj1989725@qq.com,janas79@163.com,sutingma@sohu.com,xinzewang@sjtu.edu.cn,hnkong@sjtu.edu.cnAbstract:Theammonia(NH4+-N)andphosphorus(P)adsorptioncharacteristicsofkaolin,lateriteandme-dicinalstonewerestudiedunderdifferenttemperatureandparticlesize,andtheadsorptionquantitywascal-culatedwithLangmuirisothermaladsorptionequation.ResultsshowsthatthemixedparticlesizelateritehasthelargestPadsorptionquantitythatis1.22mg/gwiththetemperature25oC,whilethemixedparticlesizemedicinalstonehasthelargestNH4+-Nadsorptionquantitythatis51.02mg/gwiththetemperature15oC,theeffectoftemperatureontheadsorptionquantitywascomplicated,andtheadsorptionquantityimprovedwithdecreaseofparticlesizeformostlysubstrate.Inapplication,differentkindsofsubstrateswithdifferentparti-clesizemustbecombinedtoensurestableeffluentqualityfromconstructedwetland.Keywords:temperature;particlesize;constructedwetland;substrate;NH4+-NP;adsorptionquantity温度及粒径对几种人工湿地填料氨氮和磷吸附量的影响温度及粒径对几种人工湿地填料氨氮和磷吸附量的影响郑向勇郑向勇1*，陈凡，陈凡1，卢敏佳，卢敏佳1，叶海仁，叶海仁1，麻素挺，麻素挺2，王欣泽，王欣泽3，孔海南，孔海南31温州大学生命与环境科学学院，温州，中国，3250352温州市环境保护设计科学研究院，温州，中国，325003上海交通大学环境科学与工程学院，上海，中国，200240Email:oakinyard@163.com,chenfan710@163.com,lmj1989725@qq.com,janas79@163.com,sutingma@sohu.com,xinzewang@sjtu.edu.cn,hnkong@sjtu.edu.cn摘要：摘要：研究了高岭土、红土及麦饭石在不同吸附温度及不同粒径范围条件下对NH4+-N和P的吸附特性，并利用Langmuir模型拟合其吸附量。结果表明，红土在25oC混合粒径的条件下对P的吸附量最大，为1.22mg/g，麦饭石在15oC混合粒径的条件下对NH4+-N的吸附量最大，为51.02mg/g，温度对不同材料吸附效果的影响比较复杂，而粒径变细可促进大多数材料的吸附效果。在实际应用中，必须对不同种类及粒径的基质进行组合搭配，保证人工湿地出水的稳定性。关键词：关键词：温度；粒径；人工湿地；填料；氮磷；吸附量1引言引言人工湿地具有低能耗、低投入、易管理等特点，因而被广泛用于生活污水、城市雨水、农田污水等方面的处理。填