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1、中国环境科学2013,33(6)：1005~1010ChinaEnvironmentalScience排水沟渠炉渣与底泥对水中氮、磷截留效应张燕1,2,祝惠1*,阎百兴1,邓志强1,2(1.中国科学院东北地理与农业生态研究所,湿地生态与环境重点实验室,吉林长春130102；2.中国科学院研究生院北京100049)摘要：通过等温热力学吸附实验,将炉渣、炉渣+30%底泥、排水沟渠底泥对水中氨氮的去除效果进行比较,并采用Langmuir等温吸附方程对3种基质吸附氨氮、磷酸盐的量进行拟合;通过动力学实验,比较3种基质吸附速率.结果表明,炉渣、炉渣+30%底泥
2、、排水沟渠底泥对氨氮的最大吸附量分别为0.49,1.03,1.75mg/g,对磷酸盐的最大吸附量分别为0.99,2.33,1.88mg/g;4h内基质吸附氨氮速率分别为:0.10,0.11,0.54mg/(g·h),2h内基质吸附磷酸盐速率分别为:0.048,0.051,0.096mg/(g·h).由于沟渠底泥较为松散、遇水冲刷易流失,故选择炉渣作为沟渠基质坝的填充物.基质坝能够减缓渠水流速,延长渠水的水力停留时间(HRT).关键词：氨氮；排水沟渠；基质坝；磷酸盐；水力停留时间(HRT)中图分类号：X522文献标识码：A文章编号：1000-6923(
3、2013)06-1005-06Interceptioneffectofditchslagandsedimentsonnitrogenandphosphorusinwater.ZHANGYan1,2,ZHUHui1*,YANBai-xing1,DENGZhi-qiang1,2(1.KeyLaboratoryofWetlandEcologyandEnvironment,NortheastInstituteofGeographyandAgroecology,ChineseAcademyofSciences,Changchun130102,China；2.G
4、raduateUniversityofChineseAcademyofSciences,Beijing100049,China).ChinaEnvironmentalScience,2013,33(6)：1005~1010Abstract：Inordertodiscusstheadsorptioncapacityofnitrogenandphosphorusforslag,70%slagwith30%ditchsedimentandditchsediments,theisothermaladsorptionandkineticsexperiments
5、wereconductedatthecomprehensiveexperimentalfieldoftheSanjiangMireWetlandExperimentalStation(47°35′N,133°31′E),ChineseAcademyofSciences.Meanwhile,theexperimentaldatawerefittedbytheLangmuirisothermaladsorptionequation.Themaximumammoniumnitrogenadsorptionamountsforslag,70%slagwith
6、30%ditchsediment,andditchsedimentswere0.49,1.03and1.75mg/g,respectively;themaximumphosphateadsorptionamountswere0.99,2.33and1.88mg/g,respectively;theadsorptionratesofammoniumnitrogenwere0.10,0.11and0.54mg/(g·h)during0~4h;theadsorptionratesofphosphatewere0.048,0.051,0.096mg/(g·h
7、)during0~2h.Slagwasusedasmatrixdamfillsinceditchsedimentswerelooseandeasytorunoff.Thehydraulicretentiontimeofditchwaterindrainageditcheswasextendedwithmatrixdamsaswellasmitigatingtheflowvelocityofditchwater.Keywords：ammoniumnitrogen；drainageditch；matrixdam；phosphate；hydraulicre
8、tentiontime(HRT)农田排水沟渠作为农田退水的重要通道,不组分对农田排水中氮、磷的截留净化能力.
