| 冷轧含铬废水微电解处理的中试研究 |
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| 引用本文： | 严刚,张大华. 冷轧含铬废水微电解处理的中试研究[J]. 工业安全与环保, 2010, 36(2) |
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| 作者姓名： | 严刚 张大华 |
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| 作者单位： | 武汉钢铁(集团)公司,武汉,430083;武汉钢铁(集团)公司,武汉,430083 |
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| 摘 要： | 钢铁行业冷轧、硅钢生产过程中产生大量的含铬废水,目前一般采用亚硫酸钠还原法处理,药剂消耗量非常大。在2 m3/h的中试规模上研究了铁/碳微电解还原工艺对钝化液含铬废水的处理,六价铬通过铁炭填料后浓度有一定降低,废水pH稍有升高,氧化还原电位降低。研究结果表明,铁炭微电解工艺对于钝化液含铬废水有一定的处理效果,但由于可能存在含铬废水对铁屑表面造成钝化导致处理不够彻底。经济效益分析表明,微电解技术相比单独采用亚硫酸钠还原法有一定的成本优势,且处理出水效果好,可直接排放,不会产生二次污染。
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| 关 键 词： | 钝化液 含铬废水 微电解 |
Pilot-scale Treatment of Chromium Wastewater from Passivating Solution by Microelectrolysis Process |
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| YAN Gang,ZHANG Dahua. Pilot-scale Treatment of Chromium Wastewater from Passivating Solution by Microelectrolysis Process[J]. Industrial Safety and Dust Control, 2010, 36(2) |
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| Authors: | YAN Gang ZHANG Dahua |
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| Affiliation: | Wuhan Iron and Steel Co.Wuhan 430083 |
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| Abstract: | Plenty of chromium wastewater is produced from iron and steel industries.Now chromium in the wastewater is generally reduced by sodium thiosulfuric and it needs more dosage.This study performs a pilot-scale(2 m3/h) treatment of the wastewater by microelectrolysis process.It is obtained that chromium concentration is decreased somewhat,aqueous pH is slightly increased and oxidation-reduction potential declines.The results suggested that iron/carbon microelectrolysis process had somewhat effects on the treatm... |
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| Keywords: | passivating solution chromium wastewater microelectrolysis |
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