城市污水可处理性试验与评价研究赵红梅

2010　　5()May　201031　3JournalofZhengzhouUniversity(EngineeringScience)Vol.31　No.3　　:2009-12-04;:2010-01-18　　:(50138020)　　:(1978-),,,,,,E-mail:[e-mail].　　:1671-6833(2010)03-0123-06赵红梅1,2,彭党聪1,王晓昌1(1.,710055;2.,710054)　:采用试验与评价相结合的方法,以城市污水为原水,进行沉淀、混凝沉淀、DE氧化沟系统、移动床生物膜反应器(MBBR)4种工艺试验,并根据试验结果对城市污水的可处理性进行量化评价,为污水处理工艺的合理选择提供可靠的参考.工艺试验和评价结果表明:沉淀1h能去除49.5%的悬浮态污染物,混凝沉淀对悬浮态污染物去除率可达98%,且处理效率为其他工艺的3.5～32倍;MBBR对溶解态有机物去除率与DE氧化沟相近,处理效率为后者的3～3.4倍;DE氧化沟对各类污染物去除率均在80%以上,但效率较低.:悬浮态;溶解态;分子量分布;去除率;处理效率;:X703.1　　　:A0　[1-2],,,[3],、[1-6].,,.,.,、.1　1.1　,,、,pH7.56,18℃,.1.0.45μm,0.45μm.1　Tab.1　Qualityofexperimentalrawwater/(mg·L-1)/(mg·L-1)SS—162.3COD93.7(34.1%)180.7(65.9%)BOD551.7(38.6%)82.4(61.4%)TNNH+4-NNO-3-NNO-2-NN38.6(76.7%)28.60.6—9.411.7(23.3%)———11.7TP4.10(50.2%)4.06(49.8%)　:①;②.1.2　1.2.1　沉淀试验,,124　　()2010.1.5L,,1、2h.1.2.2　混凝+沉淀工艺试验+,JJ-6,.:1min,120r/min;15min,45r/min;30min,,.(PAC),Al23%,32.4mgAl(gCOD·L)-1.1.2.3　移动床生物膜反应器(MBBR),,,50cm,40cm,50L,10%,1.K1Kaldnes,,Υ=1cm,h=1cm,50%.,Hrt=5.5hDO4.1～4.4mg·L-1,14～23℃,1450～2050mgVSS·L-1,0.21～0.62KgCOD·(KgVSS·d)-1.1　(MBBR)Fig.1　Schematicofmovingbedbiofilmreactor(MBBR)1.2.4　DE氧化沟二级处理系统DE[7],15×104m3·d-1,2.18h,Hrt=7min,Hrt=15min,DEHrt=11.8h,Hrt=4.7h,=4500mg·L-1,0.09～0.12kgBOD5·(kgMLSS·d)-1,20d,67kgO·h-1.,,DE.2　Fig.2　TreatmentprogressofXi'anBeishiqiaoSewagePurificationCenter1.3　SS、COD、BOD5、TP、TN、NH+4-N、NO-3-N、NO-2-N[8],pH.(HPLC),LC-9A(ShimadzuCo.,Japan).2　2.1　31h2hSS,1h,SS,2h,,1h.3　SSFig.3　SSremovaleffectofprecipitation　　、MBBR、SS4,80%.SS;MBBR、DE,SS,,220～30mg·L-1,SS90%.　3,:125　　4　、MBBR、SSFig.4　SSremovalrateofcoagulationandprecipitation,MBBR,oxygenditch2.2　COD、BOD5,:4,,COD、BOD526%、19%,,,.、MBBR、DE5.,3COD68%,83%91%,,.COD5%,COD98%.1,COD65.9%,COD,.MBBR、COD79.6%,80.3%,COD89.6%,97.6%,MBBR,、.、MBBR、DEBOD565%、92%92%,96.3%BOD5;MBBR,,BOD591.7%、95.6%,BOD591.8%、86.4%,.5　COD、BOD5Fig.5　ComparisoninCOD,BOD5removalrateofdifferenttreatmentmethod　　,,,,;MBBR,MBBR、.2.3　,,HPLC0.45μm,,6.,126　　()20101700～3200,89%,1000～5009%;3000,1800～2600,1000;1500,,90050%,60min,400,21%.6　HPLCFig.6　TheimageofHPLC2.4　1,NNH+4-N,TN(7),2TN11.9%、15.8%;DETN,、[9],NH+4-NTN95%、81.8%.MBBRNH+4-N,92%,7　NFig.7　ComparisoninNremovalrateofdifferenttreatmentmethods,TN43%.,[10],TN,.[11],,TN80%～90%.2.5　8　TPFig.8　ComparisoninTPremovalrateofdifferenttreatmentmethod　　8,,95%,90%,;,88.0%;MBBR,41.5%,,;10%,[2],,SS.2.6　4,,2.,,:=(%)(h),,.2,,,,MBBRCOD,21.3,2,.2,,　3,:127　　MBBR,CODBOD5,CODBOD5MBBR,,.2　Tab.2　Treatabilityvalueofdomesticwastewater1h+MBBRSS—50.5%(50.5)95.1%(124)90.7%(16.5)93.6%(5.2)COD—5.4%(7.0)80.7%(14.7)80.3%(4.5)25.3%(25.3)97.9%(127.7)89.3%(16.2)97.6%(5.4)BOD5—14.2%(18.5)95.3%(17.3)96.6%(5.4)19.2%(19.2)96.3%(125.6)89.9%(16.3)90.2%(5.0)TP—91.6%(119.5)41.7%(7.6)81.9%(4.6)12.7%(12.7)98.8%(128.9)60.1%(10.9)93.0%(5.2)TN—1.7%(2.2)26.5%(4.8)84.2%(4.7)34.3%(34.3)74.8%(97.6)70.9%(12.9)72.1%(4.0)NH+4-N——91.9%(16.7)94.4%(5.2)NO-x-N——22.8mg·L-13.5mg·L-1　:①;②,:(%·h-1).3　(1)50%SS,;SS,、TN、,、、.(2)DE、MBBRSS,,400,,MBBR,DE.(3),、,,.:[1]　ODEGAARDH.Advancedcompactwastewatertreat-mentbasedoncoagulationandmovingbedbiofilmprocesses[J].WaterScienceTechnology,2000,42(12):33-48.[2]　,,,.A2/O[J].,2008,2(11):1501-1505.[3]　LEVINE,AD,TCHOBANOGLOUSG,AASANOT.Sizedistributionofparticulatecontaminantsinwastewaterantheirimpactontreatability[J].WaterResearch,1991,25(8):911-922.[4]　.(CEPT)[J].,2000,16(1):26-29.[5]　,,,.[J].,2008,15(2):64-68.[6]　,,,.[J].,2008,5:44-47.[7]　.[J].,1995,11(3):5-7.[8]　.[M].4.:,1996.[9]　.DE、[J].:,2002,34(1):34-37.[10]RUSTENB.Nitrogenremovalfromdilutewaste-wa-terincoldclimateusingmovingbedbiofilmreactor[J].WaterEnvironmentResearch,1995,67(1):65-74.[11]YOONSH,KIMHS,PARKJK,etal.Influenceofimportantoperationalparametersonperformanceofamembranebiologicalreactor[J].WaterScienceTechnology,2000,41(10/11):235-242.128　　()2010ExperimentalandEvaluationStudyonTreatabilityofDomesticWastewaterZHAOHong-mei1,2,PENGDang-cong1,WANGXiao-chang1(1.Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China;2.SchoolofEnvironmentalScienceChang'anU-niversity,Xi'an710054,China)Abstract:Treatmenteffectandefficiencyofsedimentation,coagulation-sedimentation,oxygenditchandmovingbedbiofilmreactor(MBBR)whichcouldbegivenbymethodsofcombinationexperimentalandevalu-ation,anddomesticwastewaterwasusedasrawwaterintheexperiment.Thetreatmenteffectandefficiencywereusedtoevaluatequantitativelythetreatabilityofdomesticwastewaterandwhichcouldprovidereliablereferenceforwastewatertreatmentprogressselection.Theexperimentresultsindicatedthatsedimentation1hcouldremove49.5%ofSS,coagulation-sedimentationcouldremove98%suspendedandtheefficiencywas3.5～32timesmorethanotherprogresses,treatmenteffectofcoagulation-sedimentationwerealsodecidedbyquantityofsuspendedandcolloidalinwastewater.MBBRcouldeffectivelyremovedissolvedorganicmatterandtheefficiencywas3～3.4timesmorethanthatofDEoxygenditchtreatmentsystemwhichcouldremovemorethan80%contaminatesofwastewater,butlessefficient.Keywords:suspended;soluble;molecularweightdistribution;removalrate;treatmentefficiency(上接第118页)StudyontheInfluenceofLoadingRateonFractureChara