臭氧催化氧化处理造纸厂二级生物处理出水  

Ozone Catalytic Advanced Oxidation Technology for Secondary Effluent of Paper-making Mill

作　　者：贺万里 武书彬 万金泉[1,3] HE Wanli;WU Shubin;WAN Jinquan(School of Light Industry and Engineering,State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640;National Demonstration Center for Experimental Light Industry&Food Science Education,South China University of Technology,Guangzhou,Guangdong Province,510640;School of Environment and Energy,South China University of Technology,Guangzhou,Guangdong Province,510640)

机构地区：[1]华南理工大学轻工科学与工程学院,制浆造纸工程国家重点实验室,广东广州510640 [2]华南理工大学轻工与食品国家级实验教学示范中心,广东广州510640 [3]华南理工大学环境与能源学院,广东广州510640

出　　处：《中国造纸学报》2022年第1期79-86,共8页Transactions of China Pulp and Paper

基　　金：广州市科技计划项目(项目编号202002030157);山东省重点研发计划项目(项目编号:2019JZZY010501)。

摘　　要：利用臭氧氧化法对造纸厂二级生物处理出水进行深度处理,考察了臭氧发生量、反应时间、反应温度、废水pH值、废水循环速率对造纸废水色度和COD_(Cr)去除率的影响,得出最优的臭氧氧化工艺;在此基础上,采用以不同金属盐为前驱体、掺氮活性炭(AC)为载体的催化剂对废水进行臭氧催化氧化处理。结果表明,在臭氧发生量为3 g/h、反应时间40 min、反应温度为40℃、pH值为原废水pH值、废水循环速率为500 mL/min的条件下,臭氧氧化法可将废水色度降至5 C.U.以下,COD_(Cr)去除率为86.9%;在多种催化剂中,镍基催化剂(Ni@AC)协同臭氧催化氧化可使废水COD_(Cr)去除率达91.7%。The secondary effluent from paper-making mill was sufficiently treated by ozone oxidation method.The effects of ozone intake,reaction time,reaction temperature,and pH value and circulation speed of wastewater on colority and COD_(Cr) removal rate of wastewater were investigated and the optimum process conditions were obtained.Based on which,a series of catalysts with different metal salts as precursors and N-doped activated carbon as carriers were used in the ozone catalytic oxidation.The results showed that under the optimal process conditions(ozone intake 3 g/h,reaction time 40 min,reaction temperature 40°C,initial pH value,and cycle speed 500 mL/min),the colority of wastewater was reduced to<5 C.U.,COD_(Cr) removal rate was 86.9%.Of all the above-mentioned catalysts,COD_(Cr) removal rate of Ni@AC reached 91.7%due to its synergistic effect with ozone oxidation during wastewater treatment.

关 键 词：臭氧 催化氧化 造纸废水 COD^(Cr) 

分 类 号：X793[环境科学与工程—环境工程]