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ID:37383195
大小:1.06 MB
页数:7页
时间:2019-05-22
《高铁锰氨氮伴生地下水生物深度净化的工程实践》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据●城镇给排水高铁锰萄蚕伴生地下水生物深度净化的工程实践李冬1曾辉平1张杰1’2(1北京工业大学水质科学与水环境恢复工程北京市重点实验室,北京100124;2哈尔滨工业大学城市水资源与水环境国家蕈点实验室,哈尔滨150090)摘要对高铁锰氨氮伴生的地下水采用传统接触氧化工艺处理时,水厂滤池出水锰严重超标,经模拟滤柱试验发现,滤层结构和溶解氧不足是高浓度Fe2+、Mn2+、NH3一N同池生物净化失败的原因。根据滤柱试验结果,提出了强化曝气溶氧,无烟煤锰砂双层滤料一级生物过滤的工艺流程,实现了寒区高铁锰氨氮伴生的潜流地下水的同池深度净化。并用研究成果改造了哈尔滨市松北区前进水厂一期净水
2、系统。出厂水总铁小于0.2mg/L,锰小于o.05mg/L,氨氮小于0.2mg/L,满足国标要求,且长期高效、稳定运行,由此,创建了寒区高铁锰氨氮伴生地下水生物深度净化示范工程。关键词生物除铁除锰氨氮地下水寒区PracticalengineeringofadvancedremovalofhighironandmanganeseammoniaaccompanyingundergroundwaterLiDon91,ZengHuipin91,ZhangJiel·2(1.BeijingKeyLaboratoryofWaterQualityScienceandWaterEnvironmentRem
3、ediationEngineering,Be(jingUniversityofTechnology,Betiing100124,China;2.StateKeyLaboratoryofUrbanWaterResourceandEnvironment,HarbinInstituteofTechnology,Harbin150090,China)Abstract:Theeffluentmanganeseconcentrationwasfoundexcessivelimitationseriouslywhentheundergroundwateraccompanyingbyhighironan
4、dmanganeseammoniawastreatedbytradi-tionalcontactoxidationprocess.Filtrationcolumnexperimentsshowedthatlayerstructureandlackofdissolvedoxygenwerethereasonsforfailureofremoval0firon,manganeseandammoniainsinglebiofilter.Accordingtothefiltrationcolumnexperimentresults,theenhancedaerationandanthracite
5、—manganesesanddual—mediafirst—gradefilterwerebroughtforward。andthesimulta—neousadvancedremovalofthehighironandmanganeseaccompanyingundergroundwaterincoldregionwasrealized.Theresearchresultswereappliedinthereconstructionofthefirststagewaterpro-cessingsysteminQianjinWaterTreatmentPlantintheSongbeiD
6、istrictofHarbinCity.Thetotalironconcentrationineffiuentwasbelow0.2mg/L,manganesewasbelow0.05mg/Landammoniawasbelow0.2mg/L,whichmetthenationalstandards.Theoperationofthewatertreatmentplantwashighly—effi—dentandstable,whichsetupademonstrationprojectforthesimultaneousadvancedremovalofthehighi—ronand
7、manganeseaccompanyingundergroundwaterincoldregion.Keywol也.,Biologicalremovalofironandmanganese;Ammonia;Undergroundwater;Coldregion国家水体污染控制与治理科技重大专项(200973(07424—005;200973(07424—002)。给水排水V01.37No,920111l万方数据松北区是哈尔滨市北拓战
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