藻菌共生体系对镇江市金山湖湖水的异位修复模拟研究

第29卷第3期2015年6月江苏科技大学学报(自然科学版)JournalofJiangsuUniversityofScienceandTechnology(NaturalScienceEdition)Vol.29No.3Jun．2015doi:10．3969/j．issn．1673－4807．2015．03．017藻菌共生体系对镇江市金山湖湖水的异位修复模拟研究刘学卿1，郑佩2，陈芳艳3，盛建国3，成小锋4，唐玉斌3(1．镇江市环境监测中心站，江苏镇江212004)(2．长安大学环境科学与工程学院，陕西西安710054)(3．江苏科技大学生物与化学工程学院，江苏镇江212018)(4．镇江市水利投资公司，江苏镇江212013)摘要:根据镇江市金山湖湖水的水质配制了模拟湖水，考察了小球藻、栅藻、铜绿微囊藻和聚球藻对模拟湖水中总氮(TN)、总磷(TP)和化学需氧量(COD)的去除效果，筛选出小球藻作为优势藻种．文中研究了小球藻的初始密度对模拟湖水中TN、TP和COD去除效果的影响．结果表明:小球藻初始密度为5×106个/mL时对TN、TP和COD的去除效果相对较好，在72h内去除率分别可达55.1%，96.2%和55%．文中还对藻菌共生体系修复模拟湖水的效果进行了研究，确定了最佳藻菌体积比为1∶2时，TN，TP和COD的去除率分别达到62.4%，97.2%和96.2%．结果表明:藻菌共生体系可有效地对富营养化湖水进行异位修复．关键词:藻;活性污泥;藻菌共生系统;湖水修复中图分类号:X131．2文献标志码:A文章编号:1673－4807(2015)03－0297－06Simulationofex-situremediationofZhenjiangJinshanLakeusingalgae-bacteriasymbioticsystemLiuXueqing1，ZhengPei2，ChenFangyan3，ShengJianguo3，ChengXiaofeng4，TangYubin3(1．ZhenjiangEnvironmentalMonitoringCenter，ZhenjiangJiangsu212004，China)(2．SchoolofEnvironmentalScienceandEngineering，Chang'anUniversity，Xi'anShanxi710054，China)(3．SchoolofBiologyandChemicalEngineering，JiangsuUniversityofScienceandTechnology，ZhenjiangJiangsu212018，China)(4．WaterConservancyInvestmentCompanyofZhenjiang，ZhenjiangJiangsu212013，China)Abstract:AccordingtothewaterqualityofZhenjiangJinshanLake，thesimulatedlakewaterwasprepared．Theremovalefficienciesoftotalnitrogen，totalphosphorusandchemicaloxygendemand(COD)inthesimulatedlakewaterbychlorella，scenedesmus，microcysticaeruginosaandsynechococcuswereinspected．Chlorellawasfilteredoutasthedominantspecies．Theeffectsofinitialcelldensitiesofchlorellaonremovalrateoftotalnitro-gen，totalphosphorusandchemicaloxygendemandwerestudied．Theresultsshowthat，theremovalefficiencyoftotalnitrogen，totalphosphorusandchemicaloxygendemandbychlorellawithinitialcelldensityof5×106/mLwerethehighest;afteracultureperiodof72hours，theremovalefficiencyofTN，TPandCODreached55.1%，96.2%and55%，respectively．Furthermore，theremediationefficiencyofthesimulatedlakewaterbyalgae－bacteriasymbioticsystemwasalsostudied．Theoptim