光合细菌强化二级流化床工艺处理焦化废水的研究孔秀琴

3　2环境工程学报Vol.3,No.220092ChineseJournalofEnvironmentalEngineeringFeb.2009孔秀琴　赵　祥＊(,730050)　　。,。,。:,pH,DO,,。60d,,CODNH3-N105～135mg/L14～20mg/L,90.3%～92.5%92%～95%。TN83%～86%。、BOD595%。　　　　　X703.1　　　A　　　1673-9108(2009)02-0263-05Studyontreatmentofcokingwastewaterusingprocessofphotosyntheticbacteriaenhancedtwo-stageoffluidizedbedsKongXiuqin　ZhaoXiang(CollegeofPetrochemicalTechnology,LanzhouUniversityofTechnology,Lanzhou730050)Abstract　Theprocessofanaerobicacidificationwithfluidizedbedswasadoptedtotreatcokingwastewater.Theintergrowthofphotosyntheticbacteriaandhydrolytic-acidogenicbacteriawasinthefirstreactor,andtheintergrowthofphotosyntheticbacteriaandnitritebacteriawasinthesecondreactor.Aftertheabundantlow-moleculeweightorganicaciddecreasedbyphotosyntheticbacteriaandmacromoleculeorganicmattersecond-hydrolyzedinthefirstreactor,thesecondtreatmentwascompletedinthesecondreactor.Withsomeconditionsastemperature、pH、DO、concentrationofsubstrateetc,short-cutnitrificationwasachievedinthesecondreactorsothatthecarbonsourcewasusedeffectively.Theresultsfromthesteadyrunaftertwomonthswereanalysed,andtheconcentrationsofeffluentCODandNH3-Nwere105～135mg/Land14～20mg/Lrespectively,withtheremovalratesof90.3%～92.5%and92%～95%.TheremovalrateofTNwastherangeof83%～86%,theremovalratesofphenol、cyanideandBOD5weremorethan95%.Keywords　cokingwastewater;photosyntheticbacteria;intergrowth;short-cutnitrificationanddenitrification:(B)(3ZS042-B25-006):2008-04-23;:2008-05-27:(1967～),,,。＊,E-mail:[e-mail]　　、、、、、、。、、[1,2]。,-[3][4]。、,,,,。[5,6],,。,、BOD,。,[7]。PSB。3。,,,。。1　1.1　PSPPSP,2.8×109/mL。,《》,、。1.2　,():COD1300～1500mg/mL,BOD5380～450mg/mL,190～240mg/mL,30～32mg/mL,280～350mg/mL,400～550mg/mL,10mg/mL,pH7.4～8.1。1.3　DOsension6;pHsension1pH,BOD5BOD5TrakTM,、[8]。1.4　1。1　Fig.1　Technologicalprocess1.4.1　水解酸化段,,C∶P=100∶1P,(DO),DO0.3～0.5mg/L。pHpH,HClNaOH,pH6.5～7.0。(HRT)6h。COD38%～40%。pH6.5～6.7。1.4.2　一级流化床反应器段CaCl2SO2-4、S2-,,NaHCO3pH7.5,,2,80L。,0.5～0.8mm。100g/L。DO0.3～0.8mg/L,,2500～3000lx。,2　Fig.2　Apparatusoftwo-stageoffluidized-bed1∶5,,A-O,15%。,。。,2642:[9]。3%3。1.4.3　二级流化床反应器段,,,,。C/N4～6,,,C/N。C/N3～3.5,,,。34%。[10]。,,。,[11,12]:(1),,,(HRT)。30～32℃。。(2)pH,pH7.4～8.3,,。pH=7.0,。,pH7.4～7.8,pH。pH,pHNH3,HNO2,,。(3),。DO1～1.5mg/L,。(4)NH3,pH7.0,NH3,。1.5　COD、HRT,HRTCOD,HRT,14～20d,HRT,COD,15h,COD。HRT3。COD,16h。3。3　HRTFig.3　EffectofHRTonammoniaremovalefficiencyandnitriteaccumulation2　2.1　,(4),,,,《》,、、。,《》,、(5)。4　Fig.4　Photoofmicrobialflocsinthefirstreactor2.2　COD,COD35%～39%,。2653DO,,、,,,COD。COD。COD105～135mg/L,87%～92%(6)。2.3　7,92%～95%,83%～86%。,、、。、、H+,,,,,,,H+,,,。,。8■(NO-2-N)/■(NO-x-N),■(NO-2-N)NO2-N,■(NO-x-N)(NO2-N+NO3-N)。1■(NO-2-N)65%。,,,。。。,NO-x,,,NO-x。pH7.7～7.8,NaHCO3pH。pH7.3～7.4,DO0.8～1mg/L,DO1.5～1.6mg/L。2662:DO,DO。pHDO。2.4　,96%～98%,、BOD95%,1。、。1　Table1　EffectofotherpollutantremovalBOD5TN(mg/L)6.51.117.672(%)97.396.395.6853　　(1),,,,。C/N,TN83%～86%,。。COD92%～95%87%～92%。(2)COD,16h。,,,95%。(3),,,,,,。。[1]NingP.,BartH.J.,JiangY.J.,etal.Treatmentofor-ganicpollutantsincokeplantwastewaterbythemethodofultrasonicirradiation,catalyticoxidationandactivatedsludge.SeparationandPurificationTechnology,2005,41(2):133～139[2],,,..,2007,27(7):1094～1100[3],,,.--A/O.,2007,33(9):90～93[4],,..,2007,21(6):1065～1071[5]KenjiTakeno.Removalofphosphorusfromoysterfarmmudsedimentusingaphotosyntheticbacterium,rhodobactersphaeroidesIL106.JournalofBioscienceandBioengineer-ing,1999,88(4):410～415[6]JinglanHong.Effectsofphotocatalysisonbiologicaldecol-orizationreactorandbiologicalactivityofisolatedphotosyn-theticbacteria.JournalofBioscienceandBioengineering,2003,96(3):298～303[7],,,..:,2005.84～86[8]《》..:,1989.210～284[9],..,1999,19(1):22～27[10]CiudadG.Partialnitrificationofhighammoniaconcentra-tionwastewaterasapartofashortcutbiologicalnitrogenremovalprocess.ProcessBiochemistry,2005,40(5):1715～1719[11],..:,2005.391～396[12],,,..,2003,19(8):10～14267