造纸废水生化处理出水臭氧微氧化脱色技术的研究  

Research on the de-colorization of aerobic effluent of papermaking wastewater by puny ozonation

作　　者：曾科[1] 黄丽君[1] 郝甜利 张宏超[1] 崔燕平[1] 曾科,男,1963年生,硕士,副教授,研究方向为污水处理工程技术. 

机构地区：[1]郑州大学水利与环境学院,河南郑州450002

出　　处：《环境污染与防治》2014年第7期5-8,13,共5页Environmental Pollution & Control

基　　金：国家“十一五”水体污染控制与治理科技重大专项(No.2009ZX07210-002-001)

摘　　要：臭氧作为强氧化剂对有机物的氧化反应有选择性，能很快氧化分解木质素等发色有机物，中试研究了臭氧投加量、接触时间等对造纸废水生化处理出水深度处理的影响。结果表明：臭氧投加量为63．47～243．49mg／L时，COD、254nm紫外光下的吸光度（uV254）和色度去除率分别为22．61％～46．67％、22．35％～69．09％及55％～93％，其中色度有较高的去除率，即使在臭氧投加量仅为63．47mg／L时色度去除率也达到约55％；在接触时间为0．62～2．53h时，随着接触时间的延长，COD、UV254及色度去除率随之增加，而1．10h后色度去除率增加不多。以深度脱色为目标，完成了5000m3／d的工程应用，臭氧相对投加率为0．20～0．50mg（以每毫克COD计）时，色度去除率为55．0％～84．0％。As a strong oxidizer,ozone can quickly decompose lignin and other chromogenic organics. Pilot-scale study was carried out using ozone to treat the aerobic effluent of papermaking wastewater, the effect of ozone dosage and contact time on advanced treatment efficiency was investigated. Results showed that the COD, UV254 and chroma removal rates were 22.61%-46.67% ,22.35%-69.09% and 55%-93% respectively when ozone dosage was 63.47- 243.49 mg/L. The chroma achieved the relative higher removal efficiency even the ozone dosage was only 63. 47 mg/L. Prolonging the contact time from 0.62 h to 2.53 h, the removal rates of COD,UV254 and chroma increased in different degree, while chroma removal increased slowly after 1.10 h. Making de-colorization as the goal, puny oxida- tion by ozone was applied in 5 000 m3/d treatment project,the chroma removal rate was 55.0%-84.0% when the ozone dosage was 0. 20-0.50 mg per milligrams COD.

关 键 词：臭氧氧化 造纸废水 脱色 投加量 工艺优化 

分 类 号：X793[环境科学与工程—环境工程]