您好,欢迎访问三七文档
当前位置:首页 > 行业资料 > 冶金工业 > 纯氧曝气系统污泥膨胀原因及控制连立国
连立国, 王国栋(天津石化公司供排水厂,天津300270) : 通过对天津石化供排水厂纯氧曝气系统污泥膨胀前后的运行状况进行分析,认为长时间低负荷运行后受到冲击、污泥老化、二沉池局部缺氧是导致污泥膨胀的原因,并给出了相应的预防和控制措施。 : 纯氧曝气系统; 污泥膨胀; 污泥老化:X703.1 :C :1000-4602(2004)10-0095-02CauseandControlofSludgeBulkinginPureOxygenAerationSystemLIANLi-guo, WANGGuo-dong(WaterSupplyandDrainageWorksofTianjinPetrochemicalCompany,Tianjin300270,China) Abstract: ThecauseofsludgebulkingwasinvestigatedbyanalyzingtheoperatingstatusofpureoxygenaerationsystemfrombeginningtotheendofthesludgebulkinginTianjinPetrochemicalWaterSupplyandDrainageWorks.Theresultsshowthattheshockedsludgesystemunderlongtimelowloadrunning,sludgeag-ingandthelackofoxygeninpartofsecondarysettlingtankresultinsludgebulking.Thecorrespondingpreven-tionandcontrolapproacheswereproposedindetail. Keywords: pureoxygenaerationsystem; sludgebulking; sludgeaging1 工艺流程1。1 Fig.1 FlowchartofwastewatertreatmentprocessPTAPET(),。,、,。COD(1),ⅠⅢ(VⅠ=2900m3,VⅢ=4000m3),Ⅱ。1 Tab.1 Rawwaterqualityandquantity(m3/h)COD(mg/L)pH60020069PTA180570046PET20500057 Ⅱ800m3/h,COD1500mg/L,COD100mg/L,5g/L。10500m3,0.55kgCOD/(kgMLSS·d),2.·95· 2004Vol.20 CHINAWATER&WASTEWATER No.1074kgCOD/(m3·d)。6700m3,41m,0.6m3/(m2·h)。2 污泥膨胀及其原因分析ⅡCOD60mg/L,1215g/L,SV3095%,SV12080%90%,SVI=150200mL/g。,,,。Ⅱ:SV30100%,SV12095%,SVI=200~250mL/g;;,,CODSS,;,。,25~30℃,、pH6.3~7.5,6mg/L,4mg/L,、pH。10mg/L,0.5~3mg/L,,、,,、。,:① ,0.2~0.4kgCOD/(kgMLSS·d),,。,。。② 5~15d,3500kg/d(),1/4,,,,。③ Ⅱ,,。,。。,,。3 预防与控制措施① ,,,,,。Ⅱ,,,。② ,。,。③ ,。④ ,,,,SV30≤95%、SV120≤90%、SVI≤200mL/g,SV120。,。,。4 结语① SV30、SV120、SVI,,,,,。、,、。② ,0.3~0.5kgCOD/(kgMLSS·d)。:(022)63805457E-mail:2000wgd@163.com:2004-04-03·96·2004Vol.20 No.10
本文标题:纯氧曝气系统污泥膨胀原因及控制连立国
链接地址:https://www.777doc.com/doc-6552090 .html