附加回流的生物接触氧化工艺净化滇池大清河水质的示范工程研究张辉

3　2环境工程学报Vol.3,No.220092ChineseJournalofEnvironmentalEngineeringFeb.2009张　辉　温东辉＊　李　璐　谢曙光(,100871)　　,(IBCOP)。IBCOP1000m3/d,HRT4.75h,20071120084,,3。:CODNH+4-N,46.8%48.8%,NH+4-N;、、DO,TN,10.2%,;,TP17.9%,TP、。　(IBCOP)　　　　　X703.1　　　A　　　1673-9108(2009)02-0199-06Demonstrationworkofinter-cyclebiologicalcontactoxidationprocessforpurificationofDaqingRiverinDianchiLakewatershedZhangHui　WenDonghui　LiLu　XieShuguang(CollegeofEnvironmentalSciencesandEngineering,PekingUniversity,Beijing100871)Abstract　DaqingRiveristhemostseriouslypollutedriverintheDianchiLakewatershed.Abypassdem-onstrationworkoftheinter-cyclebiologicalcontactoxidationprocess(IBCOP),withthetreatmentscaleof1000m3/dandtheHRTof4.75h,wasbuiltaroundtheriverbanktopurifytheriverwater.DuringthewinterdryseasonfromNov.2007toApr.2008,threesetsofconditionsofthedemonstrationworkwereoperatedbyregula-tingcyclingratiobasedontheinfluentqualitiesandclimaticconditions.TheresultsshowedthattheIBCOPdem-onstrationworkkeptbetterremovalefficienciesforCODandNH+4-N,andtheaverageremovalrateswere46.8%and48.8%respectively.Thehighercyclingratio(150%)wasfavorableforremovalofNH+4-N.TheaverageremovalrateofTNwasloweras10.2%,owingtothenegativeimpactsoflowtemperature,carbonsourceshort-age,higherDOleveloftheinfluent,andlooseandporousbiofilm,regulatingcyclingratiocouldnotimprovetheconditionofcarbonsourceshortageremarkably.TheabsorptionbySpirogyrasp.anddepositionofsludgewerethemaincausesofTPremovalandtheaverageremovalrateofTPwas17.9%,lowTPconcentrationofinfluent,detachmentofbiofilmandhighercyclingratioweredetrimentalforTPremoval.Keywords　inter-cyclebiologicalcontactoxidationprocess(IBCOP);riverwater;removalrate;demon-strationwork;DianchiLakewatershed:(863)(2005AA601010-03);(50778001):2008-06-18;:2008-08-11:(1983～),,,。E-mail:[e-mail]＊,E-mail:[e-mail]　　,,2920km2,5.7m3[1],15.6m3。,。,45%～56%,2005COD、TNTP62.9%、75.5%65.8%[2]。29,,。3,,,、、,()。7.8×107m3,,50%。、NH+4-N,,、、[3～6]。-(anoxic-aerobic,A/O),,,,,。A/O,,。A/O,(in-ter-recyclebiologicalcontactoxidationprocess,IB-COP),,IBCOP。1　1.1　IBCOP,30m×3m×3m,2.2m,1000m3/d,HRT4.75h。A/O,1∶3,SHX,SHX,。,。,225m2,1.5m,。IBCOP(),;,。IBCOP1。1　IBCOPFig.1　SchematicofIBCOPdemonstrationwork1.2　IBCOP200711,20084。,,1。,,。,;,,。6IBCOP,3,:、。:TN、NH+4-NTP,NO-3-N;TN、NH+4-NTP,NO-3-N;TN、NH+4-NTP()(),NO-3-N;COD,,;。2002　:pH,8.17;,15.8℃,3,18.2℃;,0mg/L,,6mg/L,,2.5mg/L。IBCOP3,2。1　Table1　WatertpropertiesofDaqingRiverpH(℃)COD(mg/L)BOD5(mg/L)TP(mg/L)TN(mg/L)TKN(mg/L)NH+4-N(mg/L)//70～11030～501.5～1.722～2520～2415～207.801590401.623.522182　IBCOPTable2　ParametersandinfluentconditionsoftheIBCOPdemonstrationworkHRT(h)(%)pHDO(mg/L)(℃)COD(mg/L)TN(mg/L)TP(mg/L)1a4.753∶11007.46～7.890.05～6.7913.9～15.818.04～78.932.12～23.770.04～1.952-1b4.753∶1757.69～8.791.81～14.6913.5～14.423.58～57.896.78～19.230.21～1.352-2c4.753∶1757.51～8.270.08～11.4915.4～17.835.56～133.6020.99～23.771.34～1.863d4.753∶11508.26～8.5910.6～12.9816.2～20.131.32～56.223.80～20.700.30～1.04　　:2-12-22,,;a:12007.11.25～2007.12.13;b:2-12007.12.15～2007.01.08;c:2-22008.03.08～2008.03.23;d:32008.03.25～2008.04.161.3　COD:;TN:-;TP:;NO-3-N:;NH+4-N:;DO、pH:MettlerToledoDOpH。2　IBCOPCOD、TP、TN、NH+4-NNO-3-N3,。2.1　1,IBCOP,,。COD、TP、TNNH+4-N36.0%、21.5%、11.7%40.6%。1IBCOP,;,,,IBCOP,,。1IBCOP(Spirogyrasp.),。,,,,TP、TNCOD[7～9]。,,,,。20133　IBCOPTable3　WaterqualitiesofeffluentoftheIBCOPdemonstrationwork　　　12-12-23pH7.71～8.147.62～8.017.59～7.687.54～7.78DO(mg/L)5.3～7.753.55～8.212.66～4.133.83～6.07(℃)13.4～16.013.0～14.015.0～17.415.4～19.4(%)36.051.349.246.9COD(mg/L)32.6719.5637.2020.03(mg/L)14.33～44.448.89～43.4214.68～55.465.91～31.73(%)21.516.318.7-18.7TPa(mg/L)0.820.511.310.62(mg/L)0.10～1.440.19～1.141.19～1.420.39～0.96(%)11.710.98.110.4TN(mg/L)10.7011.8020.718.72(mg/L)2.21～18.836.04～17.4119.62～21.673.12～18.66(%)40.663.415.569.8NH+4-N(mg/L)9.623.6819.193.27(mg/L)0.11～19.090.46～12.0914.39～23.970.17～10.24　　:a12TP;3TP　　1COD,18.04mg/L,25.55mg/L,,,,COD;,IBCOPCOD36%,68.2%。IBCOP,TP。1TP,0.04mg/L,,;TP,,,IBCOPTP17.5%～26.2%。1TN,2.12mg/L,,,,IBCOP,TN;,TN,,,IBCOPTN5.4%～24.9%,11.7%。,13.9～15.8℃,14.4℃,,TN[10,11];COD/TN2.9,。1,NH+4-N,,IBCOPNH+4-N53.4%～88.4%。NH+4-N,IBCOPNH+4-N,10.9%～29.4%。,:NH+4-N,0.08～0.12kg/(m3·d);NH+4-N[12,13],100%,,NH+4-N。1,,NH+4-NTN,,COD/TN。,,NH+4-N,,COD2022　:。2.2　22-1,,,IBCOP,,,,;2-2,,,,,,。IBCOP2COD、TP、TNNH+4-N50.3%、17.4%、9.7%43.2%。2-1COD,75%,COD,,IBCOPCOD51.3%。2-1COD,45.01mg/L,60.9%～80.8%;COD36.50mg/L,30.24～57.89mg/L,,,14.1%～31.8%。2-2COD,74.80mg/L,,35.56～133.60mg/L,,27.5%～74.2%,49.2%。2-12-2,IBCOP,1,,,,,1。2-1:IBCOPTN,0.7%～30.2%,10.9%。,7mg/L,,,CODNH+4-N,;COD/TN1.82～6.27,NO-3-N,,75%。2-2TN,20.99～23.77mg/L,TN,8.1%。,,6mg/L,TN;COD/TN1.6～5.6,NO-3-N,。2NH+4-N1,NH+4-N,;NH+4-N,。2-1NH+4-N1,,,75%,IBCOPNH+4-N30%,NH+4-N,82.4%。2-2,NH+4-N,25.76mg/L,0mg/L,,NH+4-N,,2.4%。NH+4-N[13,14],,,28%。2.3　3,,。,IBCOP,,,,。COD、TP、TNNH+4-N46.9%、-18.7%、10.4%69.8%。3COD31.32～56.22mg/L,150%COD,,IBCOPCOD,46.9%。,,,,,,,,,12.1%～85.0%。3TP,,TP,。,,,;,。,,,TP。3TN0.4%～19.2%,10.4%,,COD/TN,;8mg/L,,;,2033,,[15],。3NH+4-N69.8%,93.5%。NH+4-N9mg/L,54.4%;NH+4-N9mg/L,83.1%;NH+4-N2mg/L,NH+4-N。(150%)NH+4-N,NH+4-N。3,NO-3-N,NH+4-N,,,。3　　IBCOP,,,、,:(