二甲醚生产废水的深度处理及回用11

肖羽堂,苏雅玲,邓一荣,赵璐,傅翔(中国科学院南京地理与湖泊研究所,江苏南京210008):采用微氧/好氧/混凝/富氧生物活性炭/UV消毒组合工艺处理二甲醚生产废水在进水COD为1095~1600mg/LpH值为5.0~7.0氨氮为2.1~6.7mg/L总磷为1.7~5.4mg/LSS为100~300mg/L色度为40~110倍LAS为0.31~1.92mg/L的条件下,混凝沉淀单元的出水水质满足绿化用水要求,富氧生物活性炭处理出水水质满足洗车及景观用水等要求,实现了二甲醚生产废水的零排放,具有良好的经济效益和环境效益:二甲醚生产废水;废水零排放;微氧处理;富氧生物活性炭:X703:C:1000-4602(2009)24-0076-03TreatmentandReuseofWastewaterfromDMEProductionXIAOYu-tang,SUYa-ling,DENGY-irong,ZHAOLu,FUXiang(NanjingInstituteofGeographyandLimnology,ChineseAcademyofSciences,Nanjing210008,China)Abstract:Thecombinedprocessofmicro-aerobicaeration,aerobicaeration,coagulationsed-imentation,oxygen-richbiologicalactivatedcarbonandUVdisinfectionwasusedtotreatwastewaterfromDMEproduction.WhentheinfluentCOD,pH,NH3-N,TP,SS,colorandLASare1095to1600mg/L,5.0to7.0,2.1to6.7mg/L,1.7to5.4mg/L,100to300mg/L,40to110timesand0.31to1.92mg/Lrespectively,theeffluentqualityofcoagulantsedimentationunitmeetsthegreeningrequire-men,tandtheeffluentqualityofoxygen-richbiologicalactivatedcarbonunitmeetsthecar-washingandlandscaperequirements,realizingzerodischargeofwastewaterfromDMEproduction.Thecombinedprocesshasgoodeconomicandsocialbenefits.Keywords:wastewaterfromDMEproduction;zerodischargeofwastewater;micro-aerobictreatmen;toxygen-richbiologicalactivatedcarbon:(CXNIGLAS200801),(DME)(),,,,,[1~4]//,,,76第25卷第24期2009年12月中国给水排水CHINAWATER&WASTEWATERVo.l25No.24Dec.20091设计进出水水质30104t/a,,17.6m3/h,2.4m3/h,11Tab.1DesigninfluentandeffluentqualitypH6~87~97~97~9/40~110301515SS/(mgL-1)100~300101010/NTU40~901055COD/(mgL-1)1200~1600501515BOD5/(mgL-1)307~3701055NH3-N/(mgL-1)3.5~12.82011TP/(mgL-1)1.7~4.811LAS/(mgL-1)0.12~1.1510.50.3Fe/(mgL-1)0.40.30.1/(mL-1)100100100/(L-1)3332处理工艺及设计参数21,,//,11Fig.1FlowchartofDMEwastewatertreatmentsystem22COD,LAS,,,,,;,,,,,,,231,,60m31,,6m7m5m,160m3pH7~8,DO0.3~0.5mg/L,HRT8h1,,,7m10m5m,300m3YDT,3.5m,,,:pH7~8,DO0.5~1.0mg/L,HRT15h,MLSS4~6g/L1,,250m3YDT,3.5m:pH7~8,DO2~4mg/L,HRT12.5h,MLSS3~5g/L1,,4m,7m,80m3,:pH7~9,DO4~7mg/L,MLSS2~3g/L,HRT4h24h,7min,2m3,2m3,18m/h1,4m1m5m,HRT1h4m2.5m4m,,20m3/h;HRT2h,PAC10~15mg/LUV277肖羽堂,等:二甲醚生产废水的深度处理及回用第25卷第24期3运行效果,2,COD1095~1600mg/L,pH5.0~7.0NH3-N2.1~6.7mg/LTP1.7~5.4mg/LSS100~300mg/L40~110LAS0.31~1.92mg/L,22Tab.2TreatmenteffectsofdifferentprocessesUVCOD/(mgL-1)14281392127928141371515BOD5/(mgL-1)3923833406812954SS/(mgL-1)185126815967854/NTU55401206532532/5070120607015105pH6.47.57.37.28.18.07.87.8TP/(mgL-1)4.51.20.90.50.40.20.1NH3-N/(mgL-1)0.30.46.63.10.50.30.1LAS/(mgL-1)0.10.10.60.310.10.10.1S2-/(mgL-1)0.350.430.70.780.150.060.01/(mL-1)81061000/(L-1)3107212,////UV,,UV,4经济效益分析180(),82,0.53/m3,0.5/(kWh),0.28/m3;PAC,0.13/m3;3,0.12/m3,,;,,,5结论////UV,,,,,:[1].[M].:,2007.[2].[J].,2007,35(3):16-19.[3],,,.[J].,2007,38(2):7-11.[4],.[J].,2009,25(14):75-77.:13207553726E-mail:[e-mail]:2009-08-2078第25卷第24期中国给水排水