不同pH控制策略下剩余污泥中NH4NPO43PCOD溶出研究

410环境工程学报Vo.l4,No.10201010ChineseJournalofEnvironmentalEngineeringOct.2010pHNH+4NPO3-4PCOD蔡丽梅1,2孙力平1,2*苑宏英1,2赵乐振1,2陈轶1,2(1.,300384;2.,300384)COD,pH,COD22~25,1#(pH=3),8d(pH=10);3#(pH=10),8dCOD(pH=3);2#,pH:,(pH=10)(pH=3)(pH=3)(pH=10);COD,(pH=3)(pH=10)(pH=10)(pH=3)pHCODX703A16739108(2010)10237305Studyonreleaseofammonium,phosphorousandCODfromexcesssludgewithdifferentpHcontrolstrategiesCaiLimei1,2SunLiping1,2YuanHongying1,2ZhaoLezhen1,2ChenYi1,2(1.TianjinKeyLabofWaterQualityScienceandTechnology,Tianjin300384,China;2.DepartmentofEnvironmentalandMunicipalEngineering,TianjinInstituteofUrbanConstruction,Tianjin300384,China)AbstractThesludgeinsewagetreatmentplantisrichinnitrogen,phosphateandCOD.ThepHwascontrolledinthehydrolyticacidificationprocesstomakeammonium,phosphateandCODreleasedintothesupernatantfluid.Itisavailabletogetammonium,phosphateandCODrecoveryfromsludge.At22~25thesludgein1#reactorfirstlywasadjustedtoacid(pH=3).Whentheoptimalreleasequantityofammonium,phosphatewasgotonthe8thday,thesludgewasadjustedtoalkaline(pH=10).Thesludgein3#reactorfirstlywasadjustedtoalkaline(pH=10).WhentheoptimalreleasequantityofCODwasgotonthe8thday,thesludgewasadjustedtoacid(pH=3).The2#reactorwascomparativetrialandthepHinitwasnotadjusted.Theresultsshowedthatwhentheammonium,phosphatewereretrievedmainly,thesludgeadjustedprocessfromalkaline(pH=10)toacid(pH=3)hadadvantageoftheprocessfromacid(pH=3)toalkaline(pH=10).WhenCODwasretrievedmainly,thesludgeadjustedprocessfromacid(pH=3)toalkaline(pH=10)hadadvantageoftheprocessfromalkaline(pH=10)toacid(pH=3).Keywordsexcesssludge;pH;COD;ammonium;phosphate;anaerobic:(20060521);(2008ZX07314003):2009-12-17;:2010-01-17:(1984~),,,:Emai:[e-mail]*,7602104~12670104m3/d(97%)[1][1]143663%,,50%[2],,,()4[3],COD;,,,,pH,COD,pHpH,CODpH[4]:,,pH3;CODpH1022~252pHCOD:,pHCOD;pHCOD,pHpH,COD11.1(A2/O),:31mg/g,27mg/g,COD1005mg/g,SS13531mg/L,VSS8285mg/L;NH+4N35mg/L,PO3-4P106mg/L,COD137mg/L1.23120mm,300mm,3L(1),25LOJ60,133,1#2#3#1#(pH=3)(pH=10);2#,pH;3#(pH=10)(pH=3)20%NaOH10%pH;,pHpHpH1Fig1Experimentalsetup,2d4h,pH,22~253,[5],221COD2:pH,COD;pHCOD,pHCOD,[6]pH,3~10pH[7],1#7dCOD,2#COD,2CODFig.2VariationtrendofCODrelease237410:pHNH+4NPO3-4PCODpH(pH!4)[8];COD,11d29414mg/gSS,;3#,COD,6dCOD23315mg/gSS,,COD;2#COD,52~59mg/gSS1#3#COD,2#Neyens[9]:,pH∀10,,,,,;pH,,,COD,,,[10],COD[11]pH11,2,pH11,;[12],1#3#,COD,Cai[13]Cai[13],pH,,1#COD3#COD,,[14],,CODCODpH(pH=10),1#3#,1#11dCOD3#6d2.23:,;pH,1#,,6d1275mg/gSS,,,11d3Fig3Variationtrendofammoniarelease1315mg/gSS;3#,,,,14d1586mg/gSS;2#,,[15]1#3#2#,,,;,[16]1#pH10,,[17]COD09543,TCOD,CN,2,TDOC,1#7d,11d,,2,COD11d,[17]3#7d3#1#,(),,,[10],pH,,,,237542.3:;pH,;pH,2#,,,,,,,pH,,pH2#1#,,4d,1765mg/gSS,,,pH75,,[2];3#,,,,9d,1995mg/gSS1#3#2#,,,,,,4,3#1#,[18],COD,5d,10d3#,,COD,COD,,1#pH4Fig.4Variationtrendofphosphaterelease2.4pHCOD1#pHCOD5,pH3,,COD,pH10,COD,,COD,51#pHCODFig.5Releaseofammonia,phosphateandCODin1#reactorinpHadjustmentprocess3#pHCOD6,pH10,COD,,COD,;pH3,3,2COD1#237610:pHNH+4NPO3-4PCOD63#pHCODFig.6Releaseofammonia,phosphateandCODin3#reactorinpHadjustmentprocess,,5~7d,11dCOD,COD,COD;3#6~7dCOD,pH39d,3~4d(1),,9d;(2)COD,11dCOD;(3),,[1],,,..,2003,19(S1):21~24[2]JanssenP.M.J.,MeinemaK.,VanderRoestH.F.BiologicalPhosphorusRemovalManualforDesignandOperation.:,2005[3],,,.pH.,2008,24(9):26~29[4],,,.pH.,2010,26(1):96~99[5]#∃.(4).:,2002.200~284[6],,,.pHCOD.,2006,27(7):1358~1361[7],..:,1996.100~101[8]GomecC.Y.,Speece.R.E.TheroleofpHintheorganicmaterialsolubilizationofdomesticsludgeinanaerobicdigestion.WaterScienceandTechnology,2003,48(3):143~150[9]NeyensE.,BaeyensJ.,CreemersC.Alkalinethermalsludgehydrolysis.JournalofHazardousMaterials,2003,97(1~4):295~314[10],,,..,2009,3(10):1889~1893[11],..,2006,27(2):319~323[12],,,..,2008,29(4):1002~1006[13]CaiM.L.,LiuJ.X.,WeiY.S.Enhancedbiohydrogenproductionfromsewagesludgewithalkalinepretreatment.EnvironmentalScience&Technology,2004,38(11):3195~3202[14],,,..,2008,29(3):726~732[15]MaharajI.,ElefsiniotisP.TheroleofHRTandlowtemperatureontheacidphaseanaerobicdigestionofmunicipalandindustrialwastewaters.BioresourceTechnology,2001,76(3):191~197[16],..,2008,33(8):118~120[17],,..,2008,17(4):1403~1406[18],玥,李兰英.厌氧发酵污泥中磷酸(酯)酶活.,1989,10(2):190~1962377