Removal of COD and color from livestock wastewater by the Fenton method

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• 作者：Hyunhee Lee ; Makoto Shoda
• 关键词：Fenton method ; Livestock wastewater ; CODcr removal ; Color removal
• 刊名：Journal of Hazardous Materials
• 出版年：2008
• 期刊代码：50_03043894
• 类别：ce
• 出版时间：30 May 2008
• 卷：153
• 期：3
• 页码：1314-1319
• 文件大小：520 K

摘要

The Fenton method was applied to the removal of chemical oxygen demand using chromate (CODcr) and color from high-strength livestock wastewater in which the initial CODcr was 5000–5700 mg/L. The optimum ratio of H₂O₂ (mg/L) to the initial CODcr was 1.05 and the optimum molar ratio of H₂O₂/Fe²⁺ was 2. The optimum initial pH and the optimum reaction time were 3.5–4 and 30 min, respectively. Under optimal conditions, the removal ratios of CODcr and color of the supernatant after static precipitation of the produced sludge were 88 and 95.4%, respectively. Addition of Fenton's reagents in several aliquots did not affect the efficiencies of CODcr and color removal.