城市污水深度处理及中水回用_李长东

城市污水深度处理及中水回用_李长东城市污水深度处理及中水回用＊李长东1张兴文1杨凤林1曹伟娜1李文霞2(1.大连理工大学环境与生命学院,辽宁大连116023;2.大连春兴环境工程有限公司,辽宁大连116023)摘要:介绍了一套日处理量9600t的中水回用工程,该工程应用生化+两级过滤+反渗透工艺深度处理二级城市污水并将产水回用于热电厂的循环冷却水及锅炉补给水的源水。探讨了该工艺关键单元的作用及特点并考察了其运行效果。结果表明:该工艺运行稳定,产水各项指标满足该热电厂对回用水的要求。关键词:热电厂;中水回用;循环冷却水;反渗透预处理ADVANCEDTREATMENTOFURBANSEWAGEANDREUSEOFTREATEDWATERLiChangdong1ZhangXingwen1YangFenglin1CaoWeina1LiWenxia2(1.SchoolofEnvironmentalandBiologicalScienceandTechnology,DalianUniversityofTechnology,Dalian116023,China;2.DalianChunxingEnvironmentalEngineeringCo.,Ltd,Dalian116023,China)Abstract:Anengineeringexamplewasintroducedinwhichbiologicaltreatment,twostagefiltrationandreverseosmosisprocesswereappliedtotreaturbansewageforcirculatingcoolingwaterandsourcewaterofboilermake-upwatertreatmentsystemofthethermalpowerplant,whosedesigningabilitywas9600td.Thefunctionandcharacteristicsofthekeytechnologicalunitswerealsoinvestigated.Theoperationalresultsshowedthattheprocesswasreliableandtheeffluentqualitycouldmeettheindexrequirementsofreu