蓝藻自然腐解特性研究
- 海之魂
-
1 次阅读
-
0 次下载
-
2020-02-27 12:35:10
文档简介:
312江苏农业学报(JiangsuofAgSci.),2013,29(2):312~318http://wWW.jsnyxb.eom赵悬悬,朱光灿,许丽娟,等.蓝藻自然腐解特性研究[J].江苏农业学报,2013,29(2):312-318doi:10.3969/j.issn.1000-4440.2013.02.014蓝藻自然腐解特性研究赵悬悬,朱光灿,许丽娟,吕锡武,(1.东南大学能源与环境学院,江苏南京210096;2.东南大学无锡太湖水环境工程研究中心,江苏无锡214135)摘要:以太湖打捞出的新鲜蓝藻为原料,构建反应器,研究反应器内蓝藻腐解过程中有机物、氮、磷、叶绿素a及微囊藻毒素等指标的变化规律。结果表明:藻浆经自然腐解,化学需氧量(COD)、叶绿素a、总微囊藻毒素(TMC—LR)及有机物分别降解了40.3%、86.5%,97.7%、36.5%。藻浆的自然腐解期宜以有机物、TMC—LR或NH-N的稳定为基准,水温25.9℃下腐解期为24d。藻浆自然腐解过程中,总磷的变化甚微,平均浓度为314.1mg/L;NH一N积累量较大,稳定时达到2095.8mg/L左右;总氮则不断减少,浓度由3247.5mg/L降至2782.5mg/L。NO一一N反硝化生成N:所引起的氮素损失是造成总氮减少的主要原因。对比厌氧发酵与作为农肥灌溉2种蓝藻自然腐解藻浆处理方式,认为作为农肥灌溉处理方式是蓝藻自然腐解藻浆处理的首选方式。关键词:蓝藻;自然腐解;微囊藻毒素;陈藻处理;资源化利用中图分类号:S141.4文献标识码:A文章编号:1000A.A,A.O(2013)02-0312-07CharacteristicsofnaturaldecompositionofcyanobacteriaZHAOXuan—xuan,ZHUGuang.can,XULi-juan,Lt3Xi—WU’(1.SchoolofEnergyandEnvironment,SoutheastUniversity,Ⅳnng210096,China;2.WuxiEngineeringResearchCenterofTaihuLakeWaterEnviron—ment,SoutheastUniversity,Wuxi214135,China)Abstract:ThecharacteristicsofnaturaldecompositionofcyanobacteriawerestudiedbyadecompositionexperimentonfreshcyanobacteriainareactorsalvagedfromTaihuLake,andtheconcentrationsoforganicsubstances,nitrogen,phos—phorus,chlorophyll-aandmicroeystin-LRweremeasued.Afterdecomposition,chemicaloxygendemand(COD),chloro-phyll-a,totalmicroeystin—LRandorganicsdecreasedby40.3%,86.5%,97.7%and36.5%,respectively.Thedecom-positionshouldbefocusedonstabilityoforganics,TMC—LRorNH4+_N,whichrequestedadecompositiondurationofatleast24dat25.9℃.Duringdecomposition,theconcentrationofNH4Nwasrelativelyhighallthetime,whichwas2095.8mg/LOnaveragewhentheliquidwasstable,whiletheconcentrationoftotalnitrogendeclinedfrom3247.5mg/Lto2782.5mg/L,duetodenitrification.Comparedwithanaerobicfermentation,appliedasthefertilizerwouldbebetterforrecylingutilizationofdecomposedcyanobacteri0.Keywords:cyanobacterium;naturaldecomposition;microcystin—LR;treatmentofdecomposedcyanobacterium;recylingutilization收稿15t期:2012-10-20基金项目:国家水体污染与控制科技重大专项(2009ZX07101-011—02)作者简介:赵悬悬(1986.),男,江苏
评论
发表评论