铜基类芬顿-三氯异氰脲酸处理垃圾渗滤液

doi:10.16088/j.issn.1001-6600.2024122301

摘要/Abstract

摘要： 垃圾渗滤液含有大量难降解有机物,其可生化性随填埋年限增加而显著降低,传统处理方法难以满足排放要求。本文创新性地提出铜基类芬顿-TCCA(三氯异氰脲酸)协同氧化体系,并与常规两级芬顿工艺进行对比,同时优化了工艺条件。结果表明,铜基类芬顿-三氯异氰脲酸联合工艺对垃圾渗滤液COD_Cr的去除率最高。铜基类芬顿最佳反应条件是pH值5.0、CuSO₄·5H₂O投加量1.2 g/L、双氧水投加量15 mL/L,三氯异氰脲酸最佳反应条件是pH值7.0、三氯异氰脲酸投加量7 g/L时,COD_Cr的去除率为97.86%,体系中剩余COD_Cr含量为55.11 mg/L,符合国家排放标准要求。

关键词: 垃圾渗滤液, 芬顿氧化, 铜基类芬顿, 三氯异氰脲酸, COD_Cr

Abstract: Waste leachate is a complex and degradable material that decreases with the increase of landfill time, and most of the non-degradable materials will cause great pollution to soil and groundwater. In this paper, the removal effects of two-stage Fenton oxidation, copper-based Fenton oxidation and copper-based Fenton-trichloroisocyanuric acid (TCCA) combined process on the organic matter in the waste leachate were investigated and the process conditions were optimized. The results showed that the combined copper-based Fenton-trichloroisocyanuric acid process had the highest removal rate of COD_Cr from the waste leachate. The optimal reaction conditions for copper-based Fenton were pH 5.0, CuSO₄·5H₂O dosage of 1.2 g/L, H₂O₂ dosage of 15 mL/L, and the optimal reaction conditions for trichloroisocyanuric acid were pH 5.0, trichloroisocyanuric acid dosage of 7 g/L. The removal rate of COD_Cr was 97.86%, and the residual COD_Cr content in the system was 55.11 mg/L, which was in accordance with the requirements of national emission standards.

Key words: waste leachate, fenton combination process, copper-based fenton, trichloroisocyanuric acid, COD_Cr

中图分类号: X703

刘丹, 姚兵, 陆冬云, 吴烈善, 罗晶晶, 陈艺中. 铜基类芬顿-三氯异氰脲酸处理垃圾渗滤液[J]. 广西师范大学学报（自然科学版）, 2025, 43(6): 223-232.

LIU Dan, YAO Bing, LU Dongyun, WU Lieshan, LUO Jingjing, CHEN Yizhong. Process Study of Copper-based Fenton-TCCA Combination for Deep Treatment of Waste Leachate[J]. Journal of Guangxi Normal University(Natural Science Edition), 2025, 43(6): 223-232.

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