强化厌氧生物技术在印染废水处理中的应用  

Application of enhanced anaerobic biological technology in treatment of printing and dyeing wastewater

作　　者：包伟[1,2] 黄勇[1] 张宁博[1,2] 王飞[2] 

机构地区：[1]苏州科技大学环境生物技术研究所江苏省环境科学与工程重点实验室,江苏苏州215009 [2]苏州科技大学环境科学与工程学院,江苏苏州215009

出　　处：《化工环保》2016年第5期537-542,共6页Environmental Protection of Chemical Industry

摘　　要：采用三级厌氧柱串联形成的递进式强化厌氧处理工艺协同Fenton氧化工艺处理某印染厂的印染废水(COD 1 418 mg/L、色度400倍)。三级厌氧柱的运行参数为:以陶粒为填料,进水p H为7.0,3个厌氧柱的HRT均为16 h,柱温(33±2)℃。厌氧柱2的强化条件为投加280 mg/L钙离子和30 mg/L PAM,厌氧柱3的强化条件为投加350 mg/L煤质活性炭。三级厌氧柱强化前后的COD去除率分别为70.38%和84.13%,色度去除率分别为50.00%和62.50%。Fenton氧化处理的最佳条件为H2O2投加量450 mg/L、Fe SO4投加量450 mg/L、反应p H 3.5、反应时间0.5 h。整个工艺的总COD去除率达96.12%、总色度去除率达78.75%,处理后出水的COD为55 mg/L、色度为85倍,满足GB 4287—2012《纺织染整工业水污染物排放标准》中的直排标准。The printing and dyeing wastewater with 1 418 mg/L of COD and 400 times of chroma was treated by the progressive enhanced an aerobic treatment process forming with three-stage anaerobic columns in series and Fenton oxidation process. The operation parameters of three-stage anaerobic columns are as follows： using ceramsite as filler, influent pH 7.0, HRT of each column 16 h, column temperature （33 ± 2） ℃. The enhancement conditions for anaerobic column 2 are adding 280 mg/L calcium ion and 30 mg/L PAM, and that for anaerobic column 3 is adding 350 mg/L activated carbon from coal. Before and after strengthen, the COD removal rates of three-stage anaerobic columns are 70.38% and 84.13% and he chroma removal rates are 50.00% and 62.50%, respectively. The optimal conditions for Fenton oxidation treatment are as follows： H2O2 dosage 450 mg/L, FeSO4 dosage 450 mg/L, reaction pH 3.5, reaction time 0.5 h. For the whole process, the total removal rates of COD and chroma are 96.12% and 78.75%. The COD and chroma of the effluent are 55 mg/L and 85 times respectively, which meet the direct discharge standard of GB 4287-2012.

关 键 词：印染废水 强化处理 多级厌氧柱 生物技术 FENTON氧化 

分 类 号：X791[环境科学与工程—环境工程]