高铁酸盐对焦化废水的氧化-混凝深度处理  

Advanced Treatment of Coking Wastewater by Oxidation-Flocculation with Ferrate

作　　者：王丽娜[1] 薛改凤[1] 张垒[1] 王凯军 刘霞 

机构地区：[1]武汉钢铁(集团)公司研究院,湖北武汉430080 [2]武汉平煤武钢联合焦化有限责任公司,湖北武汉430080

出　　处：《化工环保》2015年第4期359-362,共4页Environmental Protection of Chemical Industry

基　　金：武汉市科学技术计划项目(2014060202010128)

摘　　要：采用实验室自制的K2Fe O4对焦化废水进行氧化-混凝深度处理。考察了K2Fe O4加入量、初始废水p H、反应温度等因素对废水处理效果的影响。采用紫外光谱和GC-MS技术对处理前后的焦化废水进行表征。实验结果表明,在K2Fe O4加入量为8.8 mg/L、初始废水p H为4、反应温度为20℃、反应时间为30 min的条件下处理COD为252 mg/L、TOC为159.24 mg/L、浊度为24.90 NTU的焦化废水,处理后废水COD为78 mg/L、TOC为62.10 mg/L、浊度为9.46 NTU,去除率均可达60%以上。表征结果显示,高铁酸盐的氧化-混凝耦合作用对焦化废水中的有机物去除效果明显,处理后废水中的有机物种类和浓度大幅下降。The coking wastewater was further treated by oxidation-flocculation using self-made K2FeO4. The factors affecting the wastewater treatment were studied. The coking wastewater before and after treatment were characterized by UV spectra and GC-MS. The experimental results show that after the coking wastewater with 252 mg/L of COD, 159.24 mg/L of TOC, 24.90 NTU of turbidity was treated under the conditions of K2FeO4 dosage 8.8 mg/L, initial wastewater pH 4, reaction temperature 20 ℃ and reaction time 30 rain, the COD, TOC and turbidity are 78 mg/L, 62.10 mg/L and 9.46 NTU respectively, and theie removal rates are all above 60%. The characterization results show that the species and concentration of organic pollutants in coking wastewater fall sharply after oxidation-flocculation with ferrate.

关 键 词：焦化废水 高铁酸盐 氧化 混凝 

分 类 号：X801[环境科学与工程—环境工程]