BICT李 勇, 潘 杨, 黄 勇(苏州科技学院环境科学与工程学院,江苏苏州215011) : 研究了双循环两相生物处理(BICT)工艺中厌氧生物选择器的停留时间、污泥浓度和碳磷比等运行参数对选择器厌氧释磷的影响。结果表明,系统通过污泥转移保持厌氧生物选择器中较高的污泥浓度,从而提高了污泥的释磷水平、强化了系统的除磷能力。当厌氧生物选择器的停留时间为1h、系统泥龄为5d时,厌氧生物选择器的释磷效果最优。此外,运行过程中污泥的沉降性能良好,SVI值一直保持在80~120mL/g。 : BICT工艺; 厌氧生物选择器; 释磷; 污泥沉降性能:X703 :C :1000-4602(2010)23-0094-04FunctionofAnaerobicBiologicalSelectorinBi-cyclicTwo-phaseBiologicalProcessLIYong, PANYang, HUANGYong(SchoolofEnvironmentalScienceandEngineering,SuzhouUniversityofScienceandTechnology,Suzhou215011,China) Abstract: Theeffectsofoperationalparameterssuchashydraulicretentiontime(HRT),sludgeconcentrationandcarbon/phosphorusratioinbi-cyclictwo-phase(BICT)biologicalprocessontheanae-robicphosphorusreleaseintheanaerobicbiologicalselectorwereinvestigated.Theresultsshowthatthehighersludgeconcentrationintheanaerobicbiologicalselectoriskeptthroughtransferringsludgetoim-provethephosphorusreleaselevelandenhancethephosphorusremovalcapacity.WhenHRTis1h,andSRTis5d,theanaerobicbiologicalselectorhasthebestphosphorusreleaseefficiency.Additionally,theSVIvalueremainsat80to120mL/g,whichshowsthatsludgehasagoodsettleability. Keywords: bi-cyclictwo-phase(BICT)biologicalprocess; anaerobicbiologicalselector; phosphorusrelease; sludgesettleability :(BS2007109); (08KJD610002); (A0030801) (BICT)“”[1、2],,,,。BICTSBR()、()。SBR(),COD、;·94·第26卷 第23期2010年12月 中国给水排水CHINAWATERWASTEWATER Vol.26No.23Dec.2010;“”,,。,(CASS、CAST)[3]。,,,、。BICT,,。1 试验材料与方法1.1 BICT(1)、4SBR、,0.4、0.6(,1.2m)、1.2、2.0m3。1 BICTFig.1 SchematicdiagramofBICTexperimentalsetupBICT4:①(),、SBR。②,,();。③。④、、。4SBR。、;,,;。、、3。1.2 ();,COD200~1000mg/L、NH3-N24~35mg/L、TKN35~50mg/L、TP2~12mg/L,4h,15~30℃,(T1、T2)1。1 Tab.1 OperationalconditioninexperimentsSBR/min、/%HRT/minT1609060—1202530T2603060609020/25/3560 : 5d。 ,=(-)/×100%。TP—;pH;MLSS;SV;COD;NH3-N。2 结果与讨论2.1 TP2~12mg/L,T2BICTTP1.0mg/L,《》(GB18918—2002)B。TPTP,TP,。,50%。,(SCFAs),SCFAsPHA;,,,SBR,·95·李 勇,等:BICT工艺中厌氧生物选择器的作用第26卷 第23期[4、5]。,5d,,。,,。2.2 BICT,,,SBR,,()。T2,20%、25%、35%,2050、3200、4600mg/L。,,,2050mg/L3200mg/L,20%;3200mg/L4600mg/L,30%。,TP5~25gTP/(m3·d),TP1.0mg/L,3200mg/L,TP0.5mg/L。:,,,,。,C/P,40%,。,,,。2.3 HRT25%(3200mg/L),BICTTP,,2。,HRT,,TP。,,,,HRT0.5h,,,、。2 HRTFig.2 Effectofhydraulicretentiontime(HRT)onphosphorusreleaseandremovalHRT,。BICT(25%,1∶4)10L、,3100mg/L,COD、,3。3 Fig.3 StatictestonphosphorusreleaseC/P138,30、60、90min,52%、72%、75%;60min,COD,60min0.68mgP/(gMLSS·h)。,,。,,,,,(),,。,,,。,·96·第26卷 第23期 中国给水排水 ~60min[6]。,,,。,BICT1.0h。2.4 ,BICTT210%~30%,80~120mL/g,。4SBR。,30min,(1.2m)1/6,,、SBR。BICT[5],SBR1/2,、90min。4 Fig.4 Changeofsludge/waterinterfaceovertimeinperiodofsludgesettlementinSBR,:,,,;PAO,,,SCFAs,PHB,,,。,、,,。,,。5d,,,。,SBR,()。3 结论① (BICT),。② ,3200mg/L,TP5~25gTP/(m3·d),TP0.5mg/L。,,。③ 1.0h。④ 。BICT、。:[1] HuangY,LiY,PanY.BICTbiologicalprocessfornitro-genandphosphorusremoval[J].WaterSciTechnol,2004,50(6):179-188.[2] ,,,.[J].,2006,22(7):25-29.[3] ,,.[J].,2003,29(12):32-34.[4] ,,,.[J].,2008,30(8):24-27.[5] ,,.[J].,2005,23(2):69-71,55.[6] ,.[J].,2003,19(4):69-70.:(0512)68416711E-mail:yongli69@163.com:2010-06-16·97·李 勇,等:BICT工艺中厌氧生物选择器的作用第26卷 第23期