UV/Fenton/均相铜类Fenton氧化处理紫菜加工废水COD及色度研究  

Study on the treatment of COD and chroma of laver processing wastewater by UV/Fenton/homogeneous Copper Fenton-like oxidation

作　　者：王丽娟 曹媚婷 WANG Lijuan;CAO Meiting(School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401

出　　处：《河北工业大学学报》2024年第2期91-98,共8页Journal of Hebei University of Technology

基　　金：河北省教育厅重点基金资助项目(ZD2019126);河北省专业学位教学案例库建设项目(KCJSZ2018015);校地合作项目(HE2129)。

摘　　要：以COD和色度作为评价指标,采用均相Fenton、Cu-Fenton、UV/Fenton、UV/Cu-Fenton体系处理紫菜加工废水,探究了在室温条件下不同初始pH值、Fe^(2+)和Cu^(2+)投加量、H_(2)O_(2)投加量等因素对出水COD和色度的去除效果,通过正交试验确定了最佳反应条件,同时对反应机理进行了分析。分析显示羟基自由基(·OH)是UV/Fenton/均相铜类Fenton体系去除紫菜废水中COD及色度的主要活性基团。在最佳反应条件下,UV/Fenton体系在100 min时出水COD为40 mg/L,色度为25,比无UV时最佳反应时间缩短了50 min;UV/Cu-Fenton体系,在60 min时出水COD为35 mg/L,色度为20,比无UV时最佳反应时间缩短了一半,UV/Fenton体系和UV/Cu-Fenton体系出水COD及色度均能达标排放。The removal efficency of COD and chroma in wastewater produced during laver processing by homogeneous Fenton,Cu-Fenton,UV/Fenton,UV/Cu-Fenton system under different initial pH value,Fe^(2+)and Cu^(2+)dosage,and H_(2)O_(2) dosage were investigated at room temperature.The optimal reaction conditions were determined by orthogonal test,and the reaction mechanism was analyzed,that hydroxyl radical(·OH)was the main active group.Under the optimal reaction conditions,the effluent COD of UV/Fenton system was 40 mg/L and the chroma was 25 at 100 min,which was 50 min⁃utes shorter than the optimal reaction time without UV.In the UV/Cu-Fenton system,the effluent COD was 35 mg/L and the chroma was 20 at 60 minutes,which is half shorter than the optimal reaction time without UV.Both the effluent COD and chroma of the UV/Cu-Fenton system and the UV/Cu-Fenton system can meet the discharge standards.

关 键 词：FENTON 类FENTON UV 紫菜加工废水 COD 色度 ·OH 

分 类 号：X703[环境科学与工程—环境工程]