高濃度含氰農(nóng)藥廢水治理工藝的研究.pdf

1、南京工業(yè)大學(xué)碩士學(xué)位論文高濃度含氰農(nóng)藥廢水治理工藝的研究姓名：陸雪梅申請學(xué)位級別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：鄒家慶20030520AbstraetThecyanidecontainingwastewatermainlyderivesfromchemicalEngineeringindustrysuchasmetalworkingandpesticideproductionItisveryimportanttotreatthiskind

2、ofwastewaterbecauseoftheredundanttoxiccontaminantsitcontainsAcidifyrecover)processandalkalinechlorinatingprocessareusuallyused，whichhavesomeproblemsThephysicochemicaltreatmentprocessofhighconcentrationcyanidecontainingpe

3、sticidewastewaterfromtheNanjingFirstPesticideCorporationLtdisdiscussedinthisthesisTreatmentofcyanide—containingpesticidewastewaterwithcomplexingprecipitation，F(xiàn)entonoxidationandC102extensiveoxidationisexperimentedsystemat

4、icallyRelativeprinciplesandworkingconditionsarealsodiscussedTheexperimentdataareobtainedfromtrailtest，whilethereactiveprinciplesofthedifferenttreatingstepsarealsoinvestigatedTheoriginalcyanidecontainingpesticidewastewate

5、rstudiedherecontmnshighconcentraionofsalt，redundanttoxiccontaminants，refractoryorganicpollutantsandhighvaluesofcoloritywhichcanbedescribedas：pH13，COD2000040000mg／L，CN’6000～20000m【g／Lcolority5000timesandsalt8％Theresultsof

6、theexperimentsshowthattheoptimalconditionsofcomplexingprecipitationare：FeS04dosage14timesofthetheoreticalvalue，aerationduring3h，aerationquantity40L／(Lh)Someresultssuchasfiltrate’spH，CODandcolorityremoval，andCN—removalare

7、foundtobe56，morethan92％，andmorethan9999％respectivelyTheoptimalconditionsofFentonoxidationprocessare：pH3，reactionduring3h，30％H202dosage20ml／L，F(xiàn)eS047H20dosage309／L，neutralizingduring6h，whilethemorethan60％CODremovalandmoret

8、han90％colorityremovalareobservedTheoptimalconditionsofC102extensiveoxidationarepHca11，1％C102dosage20ml／L，reactionduring4h，CODremovalmorethan40％Theexperimentalresultsshowthatlessthan400mg／LCOD1essthanO5mg／LCN—concentratio

9、n。pH68，andalmostcolorlessandtransparenteffiuentareobtainedbythethreestepstreatingprocess，ofwhichtherunningcost30％timesofthetraditionaltreatingprocessAnoveltreatingtechnique，thecomplexingprecipitationfollowedbyFentonoxida

10、tionandC102extensiveoxidationprocess，aresuggestedinthepresentstudyonpilotscaletestItcanbeforeseenthatthisnewprocessisnotonlyappliedtothetreatmentofhighconcentrationcyanidecontainingwastewaterbutalsosuitabletotheefficient