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奥贝尔氧化沟工艺提标改造设计技术要点
Title:KeyTechnologicalPointsintheUpgradeDesignofAOB(Anoxic/Oxic/Biofilm)Process
Abstract:
Inrecentyears,theneedforimprovingeffluentqualityandreducingenvironmentalpollutionhasledtoincreasingattentionontheupgradedesignofwastewatertreatmentplants.TheAOB(Anoxic/Oxic/Biofilm)processisaconventionalandwidelyusedtechnologyforwastewatertreatment.However,inordertomeetstrictereffluentdischargestandards,itisnecessarytocarryoutaretrofitdesignoftheAOBprocess.ThispaperfocusesonthekeytechnologicalpointsintheupgradedesignoftheAOBprocess,includingprocessoptimization,equipmentselection,andoperationalstrategies.Itaimstoprovideanin-depthunderstandingofthedesignprinciplesandguidelinesforbettertreatmentperformanceandmoresustainablewastewatertreatmentoperations.
1.Introduction
1.1Background
1.2Objectivesandsignificanceofupgradedesign
1.3Structureofthepaper
2.ProcessOptimization
2.1AnoxicZoneOptimization
2.1.1Nitraterecycle
2.1.2Carbonsourceoptimization
2.2OxicZoneOptimization
2.2.1Aerationstrategy
2.2.2Nitrificationcontrol
2.3BiofilmZoneOptimization
2.3.1Biofilmselectionandstability
2.3.2Biofilmcarrierselection
2.3.3Biofilmthicknesscontrol
3.EquipmentSelection
3.1ReactorSelection
3.1.1Reactortypescomparison
3.1.2Reactorsizedetermination
3.2AerationSystemSelection
3.2.1Aerationmethodscomparison
3.2.2Energy-efficientaerationtechnology
3.3SludgeReturnSystem
3.3.1Pumpingsystemdesign
3.3.2Sludgereturnratiooptimization
4.OperationalStrategies
4.1NutrientManagement
4.1.1Nitrogenremovaloptimization
4.1.2Phosphorusremovaloptimization
4.2SludgeManagement
4.2.1Sludgeretentiontimeoptimization
4.2.2Sludgewastingstrategies
4.3ControlSystemDesign
4.3.1Real-timemonitoringsystem
4.3.2Controlparametersandset-pointsdetermination
5.CaseStudy
5.1Upgradedesigninawastewatertreatmentplant
5.2Performanceevaluationbeforeandafterretrofit
5.3Lessonslearnedandrecommendations
6.Conclusion
6.1Summaryofkeytechnologicalpoints
6.2Futureresearchdirections
Inconclusion,theupgradedesignoftheAOBprocessplaysa