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厌氧-好氧生物处理工艺用于去除水中杀虫剂(英文).docx

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厌氧-好氧生物处理工艺用于去除水中杀虫剂(英文) AnaerobicandAerobicBiologicalTreatmentProcessesfortheRemovalofPesticidesinWater Introduction Pesticidesarewidelyusedinagriculturetocontrolpestsandincreaseproductivity.However,theirusagehasnegativeimpactsontheenvironment,includingwaterpollution.Pesticidescanleachintowaterbodiesandcontaminatesurfaceandgroundwater,leadingtohealthandenvironmentalrisks.Therefore,itiscrucialtodevelopeffectivetreatmenttechnologiestoremovepesticidesfromwater.Biologicaltreatmentprocessesrepresentanefficientandsustainablemethodfortheremovalofpesticidesinwater.Thispaperwillfocusontheanaerobicandaerobicbiologicaltreatmentprocessesusedfortheremovalofpesticidesinwater. AnaerobicBiologicalTreatmentProcesses Anaerobicbiologicaltreatmentprocessesmakeuseofmicroorganismsthatcandegradeorganiccompoundsintheabsenceofoxygen.Theprocesstakesplaceinaclosedsystem,suchasadigesteroralagoon.Inthecaseofpesticides,anaerobicbiologicaltreatmentprocessescanbeeffectiveinremovingpesticideswithhighmolecularweight,suchaschlorinatedcompounds.Thedegradationofpesticidesinanaerobicsystemsfollowstheprocessofreductivedechlorination,inwhichthehalogenatomsaresequentiallyremovedfromthemolecule,leadingtotheproductionofnon-toxicend-products. Oneoftheadvantagesofanaerobicbiologicaltreatmentisthatitoperatesatrelativelylowenergycostssincenooxygenisrequired.Thisprocessisalsoeffectiveinremovingpesticidesthatareresistanttoothertreatmentmethods.However,theefficiencyofanaerobicbiologicaltreatmentprocessesdependsonfactorssuchaspH,temperature,andtheconcentrationandtypeofthepesticidetobetreated. AerobicBiologicalTreatmentProcesses Aerobicbiologicaltreatmentprocessesarebasedontheuseofmicroorganismsthatrequireoxygenfortheirgrowthandmetabolism.Theprocesscanbeconductedeitherinasuspendedgrowthsystem,suchasanactivatedsludgeprocess,orinafixedfilmsystem,suchasabiofilmreactor.Inthecaseofpesticides,aerobicbiologicaltreatmentprocessescanbeeffectivefortheremovalofpesticideswithlowmolecularweight,suchasherbicidesandfungicides.Aero