焦化废水a2o2工艺投加优势菌脱氮试验研究

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1、太原理工大学硕士研究生学位论文THEEXPERIMENTALSTUDYoFNlTRoGENREMoVALFRoMTHECoKEPLANTWASTEⅥ给TERBYA2／02PROCESSOFUTILIZINGPREPONDERANTABSTRACTCokeplantwastewaterisatypical，containinghighconcentrationammoniacalnitrogen，anddifficultbiodegradationalindustrywastewater．Becausecokesewagecontainslotso

2、fhard—biodegradedandtoxicantsubstances，itisconsideredtobeoneofthemostdifficultindustrialwastewatertopurify．Drainageofcokesewagewithoutpurifycouldresultintheseriouspollutioninwaterbody,andthepurifiedcokesewagethatcouldnotreachstandardwouldalsodoharmtowaterbody．Withthephysicalo

3、rchemicalprocess，whichcouldmeettherequestofdrainagefortheenvironmentalprotection，thecostwouldbeveryexpensive．Therefore，itisimperativetodevelopakindofcoke-plantwastewatertreatment，whichshouldbeeconomicallyandtechnicallyfeasible．Accordingtocharacteristicofthecokeplantwastewater

4、,thispaperstudiedutilizingthepreponderant’SmechanismandeffectdetailedlybyA2／Ozprocesstotreatthecokewastewaterofthesecondcokeplantwhichbelongstotaiyuancoalgascompany．Experimentalresultsdemonstrate：theaverageremovalrateoftheAmmoniacal—nitrogencouldreach98．29％，andthedenitrificat

5、ionratecouldreach79．46％，whiletheinfluentCODconcentrationWas817．4megL--1874．2mg／L，Ammoniacal—nitrogenconcentrationwas144．36mg／L--。687．93mg／L，pHvaluewas7．0---8．22，andunderthe3．27refluentratio，60．15hoursHRT,8．989NaHC03addingweightdaily,averagely．Theseresultsshowedthenitrogenremo

6、valeffectWasexcellent．III太原理工大学硕士研究生学位论文TheexperimentalresultsshowedthattheAlreactoreffluentAmmoniacal-nitrogen、nitrate-nitrogenandnitrite-nitrogenwhennitrogenwere144．36-687．93mg／Lcouldachieve344．51mgm、1．16mg／L、0．042mg／Lrespectivelyin8．41hours，undertheconditionsofp衅7．0～8．22，t

7、emperature=29．6"CandDO弋<0．2mg／L．TheA2reactoreffluentnitrogen、nitrate-nitrogenandnitrite—nitrogenwhennitrogenwere105．23"-_，677．78mg／Lcouldachieve109．45mg／L、2．08mg／L、0．716mg／Lrespectivelyin7．93hours，undertheconditionsofpH_7．0～8．22，temperature=29．6"CandDO<弋2mgCL．The01reactoreffl

8、uentAmmoniacal—nitrogen、nitrate—nitrogenandnitrite—nitrogenCanachiev