沉淀法吹脱法处理高浓度味精废水试验研究吴东雷

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  :ABS、UPVC、CPVC,、、、、,,ABS、UPVC,PP-PVC。: :605() :023-68610899:2001-11-20:(1972-),,,2000,,,。、吴东雷,许文锋,殷 峻(,310029) :。,,10%;63%;pH9.5、50℃6h50%,7.36/t,SO42-,。:;;:X703.1   :A   :1001-2141(2002)02-0043-03TreatmentofHighConcentrationNH4+-NinMonosodiumL-glutamateWastewaterbyCoagulation-sedimentationandBlow-offMethodWuDongLei,XuWenfeng,YinJun(DepartmentofEnvironmentalEngineering,ZhejiangUniversity,Hangzhou310029)Abstract:Thecoagulation-sedimentationandblow-offmethodwereusedtotreatthehighconcentrationNH4+-NinMonosodiumL-glutamateWastewater.Theresultsfromthetestsshowedthattheremovaltatiowaslowerthan10%whenPACandPAMwereused;theremovalratiocouldgetto63%whenitwastreatedbytheAmmoniumMagnesiumPhosphatePrecipitationmethod.Theblow-offtestshowedthattheremovalratiocouldreachover50%aftertreating6hwhenpH9.5andthetemperaturewashigherthan50℃,meanwhileSO42-couldbecutdownconsiderably,thetreatingcostwasnearly7.36yuanperton.Thereforetheblow-offmethodwasconsideredasafeasibleoneinpractice.Keywords:Blow-offmethod,Coagulation-sedimentationmethod,MonosodiumL-glutamatewastewater.  、、。,、COD、、,,。50mg/L800mg/L,COD97.7%78.1%[1]。,,,,、,。,[2-3],。,。1 1.1 ,1。1 mg/LCODcrDOD5SSNH4+-NSO42-Cl-pH3000015000400130002500080001-21.2 1.2.1 +150ml,10mol/LNaOH24 1                               20022pH,(PAC,AL2O330%)50、100、200、300、400mg/L,(PAM)25mg/L。1min,30minNH4+-N。1.2.2 150ml,10mol/LNaOHpH7.0、8.0、9.0、10.0,NH4+-N12200mg/L,MgSO47H2OKH2PO40.72mol/L,Mg2+∶PO43-∶NH4+-N=1∶1∶1。1min,30minNH4+-N。1.2.3 Υ1500×2000mm,,,pH。3m3,pH、,2h,NH4+-N。  ——,  :12 :(023)63622170 636253752 2.1 ++1。1,PAC200mg/L,NH4+-N9.8%,NH4+-N12200mg/L11000mg/L,PACNH4+-N。PAC+PAMNH4+-N。,SS,PAC+PAMNH4+-N。1 PAC+PAM2.2 NH4+-N,95%[4-5]。:Mg2+NH4++PO43-←→MgNH4PO46H2O,0℃0.023g/100ml,。N、P、Mg,。2。2   2,Mg2+∶PO43-∶NH4+-N=1∶1∶1,NH4+-NpH。pH10,NH4+-N63%,NH4+-N4560mg/L,,。,。2.3 (NH4+-N)(NH3):NH3+H2O=NH4++OH-pH,pH7,NH4+,pH12,NH3。pH,。3、4。3   3,,44        244 pH  ,25℃、40℃,8h44%,50℃,6h54%。4pH,pH9.5、6h50%。NH3,NH3,,NH3。2。2   (/t)  1-2.042-6.433-2.404-1.21-12.085+4.73-7.36  27.36/t,,20%,1.47/t,。  ——  :12 :(023)63622170 63625375,pH(CaO),SO42-CaSO42H2OSO42-,5。,SO42-23059mg/L,2hSO42-2986mg/L,8h629mg/L,、。,SO42-。,。5 SO42-3 3.1 +PAC200mg/L,NH4+-N9.8%,。3.2 ,NH4+-NpH。pH10,NH4+-N63%,;,。3.3 ,;,50℃6h50%;pH9.5,pH。7.36/t,1.47/t,。SO42-;。4 1..,1998,20(6):1~4.2.、.,1999,11.3.-SBR.,1995,14(7):13~15.4..,1999,20(5):90~92.5..,1998,1.***   ***   ***   ***  ,,,,,,!:;:400052;:023-65212254451 :、

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