四川环境2024，Vol.43Issue(6)：151-157,7.DOI:10.14034/j.cnki.schj.2024.06.022
Fenton调理脱水污泥直接二次深度脱水工艺的研究及优化
Study and Optimization of Direct Secondary Advanced Dewatering of Dewatered Sludge After Fenton Oxidation
摘要
Abstract
The Fenton reagent oxidation method was applied to condition dewatered sludge for direct secondary advanced dewatering,and the effects of dosage,H2O2/Fe2+(molar ratio),dosing method,initial pH value and initial moisture content on the performance of secondary advanced dewatering,as well as the conditioning mechanism were discussed.The results showed that Fenton oxidation could effectively degrade organic compounds and promote advanced dewatering.The optimum Fenton's reagent dosage and H2O2/Fe2+(molar ratio)were 6％～9％·wb and 2∶1,respectively.The efficacy of the Fenton oxidation improved if H2O2 was added in multiple steps.Pre-acidification of the Fenton reaction was not required to avoid precipitation of Fe3+in the dewatered sludge.In addition,the initial moisture content did not affect the final water content.After preconditioning,the dewatered sludge could be injected directly into the plate-and-flame filter press without dilution,and the final moisture content decreased to below 55％after squeeze.The technology of direct secondary advanced dewatering was achieved for dewatered sludge.关键词
脱水污泥/二次深度脱水/Fenton/板框压滤机Key words
Dewatered sludge/secondary advanced dewatering/Fenton/plate-and-frame filter press分类
资源环境引用本文复制引用
孙全,曾招财,林乃喜..Fenton调理脱水污泥直接二次深度脱水工艺的研究及优化[J].四川环境,2024,43(6):151-157,7.基金项目
江苏省基础研究计划自然科学基金——面上项目(BK20231466). （BK20231466）
