两级DTRO工艺在小规模垃圾渗滤液处理中的应用及特点_李娟
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2020-06-30 22:57:30
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两级DTRO工艺在小规模垃圾渗滤液处理中的应用及特点李娟1,刘阳1,2,卢海威2,蒋剑虹3,曹冬辉1,傅磊1(1.湖南省城乡生活垃圾处理处置工程技术研究中心,湖南长沙410008;2.湖南现代威保特环保科技有限公司,湖南长沙410005;3.中机国际工程设计研究院有限责任公司,湖南长沙410007)摘要[目的]介绍两级DTRO(碟管式反渗透)在小规模垃圾渗滤液处理项目中应用及优势。[方法]以小规模垃圾渗滤液处理(≤100m3/d)为例,介绍了两级DTRO的工艺设计、工艺特点和影响因素。[结果]系统连续运行72h后的进水量为120m3/d,产水量为91m3/d,原水电导率为8450μs/cm,一级DTRO回收率为78.5%,二级DTRO回收率为88.5%,一级DTRO运行压力为2.3~2.7MPa,二级DTRO运行压力为3.2MPa,一级透过液电导率为459.3μs/cm,二级透过液电导率为47.1μs/cm,运行功率42kW,电耗为8.5kW/t(原水)。出水水质检测结果为pH=7.24~7.49,SS=10~14mg/L,CODCr=5~10mg/L,BOD5<2,TN=3.72~8.85mg/L,TP=0.02~0.04mg/L,NH3-N=3.20~7.96mg/L,粪大肠杆菌<400个/L,色度为2。[结论]各运行参数达到或超过系统的设计能力,系统运行稳定,运行成本合理,出水水质满足《生活垃圾填埋场污染控制标准》(GB16889-2008)的相关要求。关键词两级DTRO(碟管式反渗透);垃圾渗滤液中图分类号X703.1文献标识码A文章编号0517-6611(2011)35-21926-03ApplicationandCharacteristicsofTwo-stageDTROinSmall-scaleTreatmentofWasteLeachateLIJuanetal(HunanResearchCenterofTreatmentandDisposalEngineeringTechnologyforUrbanandRuralLifeWaste,Changsha,Hunan410008)Abstract[Objective]Theresearchaimedtointroducetheapplicationandadvantagesoftwo-stageDTRO(disc-tubereverseosmosis)insmall-scaletreatmentofwasteleachate.[Method]Withsmall-scaletreatmentofwasteleachate(≤100m3/d)asanexample,thetechnologicalde-sign,charactersandinfluencingfactorsoftwo-stageDTROwereintroduced.[Result]Afterthesystemwasrunningfor72hcontinuously,itswa-terinflowwas120m3/d,itswateryieldwas91m3/d,itsconductivityofinitialwaterwas8450μs/cm,therecoveriesofitsfirstandsecondDTROwere78.5%and88.5%resp.,itsrunningpressureoffirstandsecondDTROwere2.3~2.7and3.2MParesp.,theconductivitiesofleachateofitsfirstandsecondDTROwere459.3and47.1μs/cmresp.anditsrunningpowerandelectricconsumewere42kWand8.5kW/t(initialwater).Theresultsofwaterqualitymonitoringoneffluentwereasfollows:pH=7.24~7.49,SS=10~14mg/L,CODCr=5~10mg/L,BOD5<2,TN=3.72~8.85mg/L,TP=0.02~0.04mg/L,NH3-N=3.20~7.96mg/L,Escherichiacoliinegesta<400/Landchromaticity=2.[Conclusion]Therunningparametersreachedorexceededthedesignedcapacityofsystem.Thesystemrunningwasstableandtherunningcostwasreasonableandthequalityofeffluentmettherelati
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