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混凝-Fenton试剂氧化法预处理高浓度油墨废水
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摘要
采用强化混凝联用Fenton试剂氧化技术处理油墨废水,优化了混凝条件,考察了后续Fenton试剂氧化效果。强化混凝最佳条件为:p H5.62,PFS投加量2000mg/L,CPAM投加量5mg/L,混凝处理后CODCr和色度去除率分别为76.54%和95%;处理后上清液进行Fenton试剂氧化,在最经济的适用条件下CODCr去除率为55.43%。实验表明强化混凝与Fenton试剂联用可以有效预处理高浓度油墨废水,CODCr和色度总去除率分别达89.55%和98%以上,总BOD5/CODCr由0.025提高至0.350以上,废水可生化性显著提高,满足后续生化处理进水要求。
The combined coagulation and Fenton reagent oxidation process was adopted to pretreat ink printing wastewater,the coagulation condition was optimized, and the effect of the subsequent Fenton reagent oxidation was explored. The the optimum coagulation condition was: p H5.62, PFS dosage 2000mg/L, CPAM dosage 5mg/L. After coagulation treatment, CODCr and colority removal efficiency reached 76.54% and 95%, respectively. The supernatant after coagulation sedimentation was then treated by Fenton reagent oxidation,under the most economical condition, CODCr removal efficiency reached 55.43%. Research showed that the combined coagulation and Fenton reagent oxidation process is an effective pretreatment method for high concentration ink printing wastewater,the total removal efficiency of CODCr and colority reached 89.55% and 98%, respectively, and BOD5/CODCr was also raised from 0.025 up to 0.350,the biodegradability of the wastewater was improved greatly, and the treated effluent could meet the subsequent biological oxidation process.
引文
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