Campus Sewage Treatment System Based on Program Lo
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2019-02-28 11:16:02
文档简介:
基于程序逻辑控制技术的校园污水处理系统CampusSewageTreatmentSystemBasedonProgramLogicControlTechnology�1.INTRODUCTIONWiththecontinuedexpansionofUniversityCollege,theproblemofcampussewagemustbeurgentlyresolvedduetotheincreasingsewageproblemsfromuniversityofcampusonthesurroundingenvironment.Accordingtodifferentprinciplesofwastewatertreatmenttechnologies,wastewatertreatmenttechnologywasdividedintophysicalmethod,chemicalmethodandbiologicalmethod.Among,biologicalmethodwasdefinedthatorganicpollutantsfromsewagewaterwereconvertedandabsorbedbythedegradationrolesofmicrobialbiological.Incommon,biologicalmethodscanbedividedintoactivatedsludgemethod,ABmethod,biofilmmethod,oxidationditchmethod,andsoon.SBRmethodisthesequencingbatchreactoractivatedsludgeprocess,whichisanactivatedsludgewastewatertreatmenttechnologybycontinuousfeeding,intermittentdrainageandcycleintermittentaeration.SBRisapredecessorofFill-and-Drawsystembyintermittentoperation,whichisanimprovementofactivatedsludgereactorfullyproducedbytheearlytwentiethcent
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