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05110214211189pHApplicationofultrasoundinwastewatertreatmentShenYuZhou(SchoolofCivilEngineering,SoutheastUniversity,Nanjing211189)Abstract:Weintroducedtheprincipleofultrasonicdegradationofpollutantsdegradationinwater.thenweintroducedanumberoffactorsthataffectthedegradationefficiencyfromtheultrasoundsystemfactors,includingthefrequencyandsoundintensity;chemicalfactors,includingdissolvedgases,pH,reactiontemperature.Wealsointroducedultrasoundusingincombinationwithotherlatesttechnologiesandscientificresearchinthisarea.keywords:Ultrasound;sewagetreatment;degradationCO2H2O.199211.11.20KHz1W/173Kpa173Kpa214415002.5000K50mpa5000K50mpa109k/s400Km3.1.21.1000002.2.2pH2.12.22.3N2O22.4pHpHpHpH,--pH2.5(20),33.1/,/(US/O3),,,,,US/O3,3.2/H2O2,,;,H2O2,HO?HOO?,H2O2,HO?,HO?,H2O23.3/2001,WuChunde/,,TOC,/Fe2+TOC,pHO2()HO?,TiO2,,TiO2,3.4/,1998,S.R.Rege,2002,,NKA,,,,,4[1],,,.[J].200614(5)40-45[2],.[J].,200522(2)141-150[3],,,.[J].200423(1)105-108[4],,,.[J].200123(3)45-47