UASB接触氧化气浮处理柠檬酸废水李敬存

75Vol.7,No.520065TechniquesandEquipmentforEnvironmentalPollutionControlMay2006UASB--李敬存1　曹志恒2　杨丰坤3(1.,271100;2.,271104;3.,271100)　　UASB--。,SS、CODBOD53427mg/L、18853mg/L11778mg/L,,SS、CODBOD5147.5mg/L、223mg/L51.9mg/L。、,。　　　UASB　　　X703.1　　　A　　　1008-9241(2006)05-0135-03Treatingcitric-acidwastewaterwithUASB-contactoxidation-airsupportLiJingcun1　CaoZhiheng2　YangFengkun3(1.LaiwuEnvironmentalProtectionBureau,Laiwu271100;2.LaiwuGangchengEnvironmentalProtectionBureau,Laiwu271104;(3.LaiwuLaichengEnvironmentalProtectionBureau,Laiwu271100)Abstract　UASB-contactoxidation-airsupportusedtotreatcitric-acidwastewaterisintroduced.OperationshowsthatundertheinfluentconditionsofSS=3427mg/L,COD=18853mg/LandBOD5=11778mg/L,SS,CODandBOD5oftheeffluentare147.5mg/L,223mg/Land51.9mg/Lrespectively.Comparedwithotherprocesses,applyingthemethodtotreatcitric-acidwastewater,mayhavesuchadvantagesaslesslandoccupa-tion,lowengineeringinvestmentandoperationcost,andstabletreatmenteffect.Keywords　citric-acidwastewater;wastewatertreatment;UASB;contactoxidation;airsupport:2003-12-14;:2004-03-29:(1970～),,,。E-mail:[e-mail]1　　、、、。、、,,。-,、。UASB--,,。2　5000t,,。1400m3/d,1500m3/d,《》(GB8978-1996)。1。1　Table1　DesignedwaterqualityofinflowanddischargestandardCOD(mg/L)BOD5(mg/L)SS(mg/L)pH18000120003004.5～53001502006～93　3.1　1。71　Fig.1　Technologicalprocess3.2　50℃1,pH、35℃UASB,,COD5000mg/L,2。,pH2UASB,2,COD2200mg/L。21,,,COD500mg/L,2,,。,。UASB,。UASB-,98%。3.3　(1)、,,;(2),;(3)80%,;(4),;(5)、pHCOD;(6),,。3.4　(1)(2),、。,,5m×5m×3m,75m3。(2)UASB(3),,,,。,8m×11m,500m3,1.8kgCOD/kgd,HRT36h。(3),4m×4m×2.5m,40m3。(4)12,。,,5m×8m,150m3。(5)。,22m×15m×6.5m,2000m3,0.4kgCOD/kgd,HRT30h。(6)、。,4m×4m×2m,30m3。(7)(2),BMY70-800,70m2。(8)。,6m×9m,,250m3。(9)。,90m3/h,。4　UASB、3。UASB,,[1]。3,,,。,,。、,,。,pH7.0、30℃、COD4000mg/L、10gVSS/L、0.6～1kgCOD/m3d,;,COD5000mg/L,13kgCOD/m3d,0.5kgCOD/m3d,pH;,COD12000mg/L,31365:UASB--9kgCOD/m3d,1500mg/L,。,,,。≤500mg/L,。,、。,,,,[2]。。1/20,1/3,pH7.0、BOD200mg/L、20℃、4mg/L。,BOD∶N∶P=100∶5∶1,、pH、COD、。,,。,,。,、、,。COD,80%,,。。2,。,《》。2。2　Table2　MonitoringresultspH(mg/L)COD(mg/L)BOD5(mg/L)15.34248025000130548.0618324258.124.13442119321116237.6016923051.034.91471620365122437.4812723654.244.30420516127123468.2612120548.053.61261315486112087.6114920149.963.73212916820101967.4013622350.64.34342718853117787.73147.522351.95　500,0.20/m3,0.58/m3,0.22/m3,0.64/m3,0.26/m3,1.38/m3。6　　(1)UASB,COD、BOD5,,。(2)pHpH5。pH,pH(6.8～7.2)。pH,UASB,pH。(3),,,,。7　　UASB--,,,pH,;、,,。[1],..,2002,33(2):50～51[2],,,..:,1990.159～255137