| 内电解—Fenton氧化—絮凝沉淀预处理焦化废水 |
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| 引用本文： | 胡绍伟,王飞,陈鹏,王永,徐伟.内电解—Fenton氧化—絮凝沉淀预处理焦化废水[J].化工环保,2014,34(4):344-347. |
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| 作者姓名： | 胡绍伟 王飞 陈鹏 王永 徐伟 |
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| 作者单位： | 鞍钢股份有限公司 技术中心，辽宁 鞍山 114009 |
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| 摘 要： | 采用内电解—Fenton氧化—絮凝沉淀的化学集成技术预处理焦化废水，优化了各工段的运行参数。实验结果表明：在钢铁铁屑与活性炭的体积比为1∶1的条件下，内电解工段的优化参数为进水pH 2.6~3.1、HRT=1.0 h;Fenton氧化工段的优化参数为Fe2+加入量200 mg/L、H2O2加入量1 000 mg/L、进水pH 3.0左右、反应时间1.0 h;絮凝沉淀工段的设定参数为进水pH 9.5~10.0、聚丙烯酰胺加入量1 mg/L、静置沉降0.5 h。在上述工艺条件下，该集成技术对废水的总COD去除率大于55%，处理后的废水BOD5/COD大于0.28，不添加稀释新水即可进入后续生化处理系统。该工艺占地面积小、系统结构简单、易于工业化，废水预处理成本为4~5元/t。
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| 关 键 词： | 焦化废水 内电解 芬顿氧化 絮凝沉淀 预处理 |
| 收稿时间： | 2013-12-20 |
Pretreatment of Coking Wastewater by Internal Electrolysis-Fenton Reagent Oxidization-Flocculating Settling |
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| Hu Shaowei,Wang Fei,Chen Peng,Wang Yong,Xu Wei.Pretreatment of Coking Wastewater by Internal Electrolysis-Fenton Reagent Oxidization-Flocculating Settling[J].Environmental Protection of Chemical Industry,2014,34(4):344-347. |
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| Authors: | Hu Shaowei Wang Fei Chen Peng Wang Yong Xu Wei |
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| Affiliation: | Technology Center,Angang Steel Co. Ltd.,Anshan Liaoning 114009,China |
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| Abstract: | Coking wastewater was pretreated by the internal electrolysis-Fenton reagent oxidization-flocculating settling process. The operational parameters of each stage were optimized. When the volume ratio of scrap iron to activated carbon is 1∶1，the optimum parameters of internal electrolysis stage are as follows：influent pH 2.6-3.1，HRT 1.0 h. The optimum parameters of Fenton reagent oxidization stage are as follows：Fe2+ dosage 200 mg/L，H2O2 dosage 1 000 mg/L，influent pH about 3.0 and reaction time 1.0 h. The set parameters of flocculating settling stage are as follows：influent pH 9.5-10.0，polyacrylamide dosage 1 mg/L and settling time 0.5 h. Under these conditions，the total COD removal rate is above 55%，and the pretreated wastewater with more than 0.28 of BOD5/COD can be biotreated without dilution. |
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| Keywords: | coking wastewater internal electrolysis Fenton reagent oxidization flocculating settling pretreatment |
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