范 伟1, 吕 军1, 陆必云2, 苗利利1, 高慧东3(1.中冶京诚工程技术有限公司,北京100176;2.江阴兴澄钢铁公司,江苏江阴214429;3.秦皇岛泰盛水务有限公司,河北秦皇岛066004) : 为减少新水取水量,降低吨钢新水耗量,实现节能减排,江阴兴澄钢铁公司根据总体规划及生产发展用水要求建设了生产废水处理与回用工程。该工程处理规模为3.6×104m3/d,采用微涡旋反应沉淀池/双层过滤器工艺,运行成本约0.33元/m3,处理出水与该厂净水处理站的出水混合后作循环水补水。介绍了该工程的工艺流程、主要构筑物的设计参数及特点。 : 钢铁生产废水; 微涡旋反应沉淀池; 双层过滤器:X703.1 :C :1000-4602(2010)06-0080-05TreatmentandReuseofProductionWastewaterfromLargeIronandSteelCompanyFANWei1, LVJun1, LUBi-yun2, MIAOLi-li1, GAOHui-dong3(1.CapitalEngineeringandResearchIncorporationLimited,MCC,Beijing100176,China;2.JiangyinXingchengIronandSteelCompany,Jiangyin214429,China;3.QinhuangdaoTaishengWaterCo.Ltd.,Qinhuangdao066004,China) Abstract: Inordertoreducefreshwaterquantity,decreasefreshwaterconsumptionpertonsteelandachieveenergysavingandemissionreduction,awastewatertreatmentandreuseprojectwasbuiltbyJiangyinXingchengIronandSteelCompanyaccordingtotheoverallplanningandthewaterconsumptionrequirementforproductionanddevelopment.Thetreatmentcapacityoftheprojectisabout3.6×104m3/d,micro-vortexreactionandsedimentation/dual-mediafiltertechnologyisused,andtheoperationcostis0.33yuan/m3.Aftermixedwiththepurifiedwater,thetreatedeffluentisusedasmake-upwaterforcirculatingcoolingsystem.Theprocessflowoftheproject,thedesignparametersandcharacteristicsofthemainstructuresareintroduced. Keywords: ironandsteelwastewater; micro-vortexreactionandsedimentationtank; dual-mediafilter ,,,,,,,()。1 设计进、出水水质及处理工艺1.1 、、(1)。,·80·第26卷 第6期2010年3月 中国给水排水CHINAWATERWASTEWATER Vol.26No.6Mar.2010、、,,、、。1 、Tab.1 DesignqualityofinfluentandeffluentpH/(μS·cm-1)/NTU/(mg·L-1)/(mg·L-1)/(CFU·mL-1)8.0980031.724.41.73290007~8≤1000≤3≤50≤0.5≤801.2 ,/+V[1]。、、,、,。3.6×104m3/d,66m×29m,2500。,/,1。1 Fig.1 Flowchartofwastewatertreatmentandreuseprocesses 、(),、,。,、,。,,。,,,。,,。,、。2 工艺设计特点及主要构筑物2.1 ① 。,。,。,,,。② 。,,,。,。、,,,。、、,,,。,。③ V。V。,,,·81·范 伟,等:大型钢铁公司生产废水的处理与回用第26卷 第6期。,,,,,。,,。,、、,、、,。2.2 ① GL2,20mm,、。② (),1280m3。4,、,7.5kW。,4,31,Q=600m3/h,H=300kPa。③ 1500m3/h,,,,750m3/h。:2,2,,,2。DN500、L3.0m,,,,≤5kPa,3s。。,,PVC。3:0.12m/s、0.09m/s、0.06m/s,11min。,,150mm,0.06m/s。V,60°,2.2mm/s,5,。,。。,DN200,、,。PLC,2~3;2~3,15d。④ 750m3,3,21,Q=750m3/h,H=320kPa,。⑤ 2,5m,13.8m,(,26.9m)。,。20~25m/h,≤30mg/L,≤5mg/L;≤3mg/L,≤1mg/L。(),1.3~1.5mm,1.2m;0.8~1.0mm,1.2m;0.1m;25m/h,350kPa,25m/h,70kPa;,10min。⑥ 、2,700m3。2,11,Q=785m3/h,H=350kPa。3(1),21,Q=750m3/h,H=500kPa,。,,,。⑦ 、(PAC),60mg/L,25mg/L。、,。PAM,0.5mg/L,0.2mg/L。、,。,,·82·第26卷 第6期 中国给水排水 ~1.0mg/L。⑧ 430m3,2、2(11,Q=100m3/h,H=250kPa)。,,12m,1。,3,21,Q=25m3/h,H=400kPa。100m22,120m2,。3 工程调试及运行效果20093,、,———;,(,,,、,)。,。,,———。2。2 Tab.2 Effluentqualityofwastewatertreatmentstationandoutflowqualityofwatertreatmentstation pH/(μS·cm-1)/NTU/(mg·L-1)/(mg·L-1)/(mg·L-1)/(mg·L-1)2009-05-1510.8121022.5175.62050.7091.739.114500.9136.61920.0490.167.63180.697.621.80.0292009-07-169.34103414151.31600.3771.838.879841.2146.41500.0530.3857.623130.987.819.80.0412009-09-158.1082238.812299.90.7181.767.761006197.6191.90.0370.387.233291.2102.529.40.0457~8≤1000≤3≤50≤0.5 ,pH、、。,,。2009915,,PAC。1500m3/h,(1×104m3/h),。8,28.8NTU,0.95NTU,;,pH、、,。4 工程技术经济分析2200,0.33/m3,、、。,(0.9t/d)(7.2kg/d)0.075/m3;(31%,3.6L/d)(1.8kg/d)0.012/m3;18720kW·h/d,0.24/m3。1.05/m3(0.82/m3,0.23/m3),,946,(),。5 结论① /,,,,,。② ,,·83·范 伟,等:大型钢铁公司生产废水的处理与回用第26卷 第6期。pH、、,,。,pH、,。:[1] ,.[J].,2008,24(20):73-76.[2] ,,,.[J].,2007,25(6):101-104.[3] ,,,.[J].,2008,31(4):101-103.[4] .-V[J].,2009,40(1):89-91.[5] ,.[J].,2004,22(5):16-18.[6] .[M].:,2002.:(010)67835092E-mail:fanwei@ceri.com.cn:2009-09-21(上接第71页)1222.25,678.06,77.91。20088,,20092,4,5,5—7、、、。724,83,,,828,829,。(55~60)×104m3/d,18000~19300kW·h/d,15%,4~5。20×104m3/d,。7 结论、,,,500,5。,,,,,。:[1] ,,,.[J].,2008,24(4):89-94.:13983015436E-mail:coffie@163.com:2009-11-30·84·第26卷 第6期 中国给水排水