多介质土壤层系统处理太湖流域农村生活污水的工程研究_英文_张洪玲

EngineeringStudyontheTreatmentofMulti-soil-layeringSystemontheRuralDomesticWastewaterinTaihuBasinZHANGHong-ling1，ZOUJun2*，CHENXin11．NanjingInstituteofEnvironmentalSciences，MinistryofEnvironmentalProtection，Nanjing210042，China;2．CollegeofWaterConservancy，YangzhouUniversity，Yangzhou225009，ChinaAbstractBycombiningwiththeactualsituationintheruralarea，thepracticaltechnologyofdomesticwastewatertreatmentwhichhadthewidepopularizationvaluewasdevelopedintheruralareaofTaihuBasin．Moreover，themulti-soil-layeringsystemwasusedtotreattheconcentratedru-raldomesticwastewater，andthedemonstrationprojectwasestablishedinFenshuiVillage，Yixing，Jiangsu．Theresultshowedthattheinfrastruc-tureandoperatingcostofsystemwaslow，andthetreatmenteffectwasgood．TheaverageremovalratiosofCOD，NH+4-N，TN，TPandSSwererespectively70%，83%，59%，76%and94%．ThequalityofyieldingwatercouldreachGradeAstandardofPollutantEmissionStandardsinUrbanWastewaterTreatmentPlant．KeywordsRuraldomesticwastewater;Multi-soil-layeringsystem;Demonstrationproject;ChinaReceived:December28，2010Accepted:January26，2011SupportedbyTheImportantSpecialItemofNationalWaterBodyPol-lutionControlandTreatmentScienceTechnology(2009ZX07528-005)．*Correspondingauthor．E-mail:zoujun0927@yahoo．com．cnInrecentyears，astheeffectivetreatmentofindustrialemissionpointsourcepollution，theeutrophicationdegreeinTaihuLakehasdeclined，buttheareasourcepollutionwasstillprominent．Moreover，thenitrogenandphosphoruspollutioninthezonewasserious．Therefore，itwasofgreaturgencytotreatthewaterenvironmentinTaihuBasin．Theresearchonthetreatmenttechnologyofruraldomesticwastewaterandtheexplorationonthetreatmentmodehadtheurgentpracticalsig-nificanceonpromotingthenewruralconstruction．Themulti-soil-layeringsystemwasthesewagetreatmentsystemwhichusedthepercolation，adsorptionanddegradationfunctionofsoiltopurifythesewage．BasedonthemultilevelsoillayertechnologywhichwasdevelopedbyJapan，NanjingInstituteofEnvironmentalSciencesinMinistryofEnvironmentalProtectioncombinedthewaterqualitycharacteristicofru