环境工程学报2026，Vol.20Issue(8)：2684-2696,13.DOI:10.12030/j.cjee.202601084
耦合HELP-Landsim模型的锰渣无害化工艺与填埋场类型全链条污染及健康风险评价
Whole chain pollution and health risk sssessment for manganese slag harmless process and landfill type coupled with HELP-Landsim model
摘要
Abstract
Leachate from electrolytic manganese residue(EMR)poses a severe threat to regional groundwater environments and human health due to the leakage risks of manganese(Mn)and ammonia nitrogen(NH4-N).To achieve differentiated risk management,this study developed a comprehensive evaluation framework based on the GB18599-2020 standard by coupling the HELP(Hydrologic Evaluation of Landfill Performance)model and the Landsim(Landfill Site Simulator)model with the USEPA health risk assessment method.Using a legacy EMR landfill as a representative case,the study systematically compared the contamination evolution patterns and health risk disparities of four EMR types(raw,water-washed,stabilized,and water-washed-stabilized)under their corresponding landfill categories(Class I and Class II).The research results indicated the following:1)Leakage Evolution Characteristics:Class II landfills exhibited stable leakage in the short-term(0-10 a)and medium-term(10-30 a)phases,but leakage rates accelerated in the long term(30-100 a)due to the synergistic effects of liner system aging and leachate accumulation,which necessitated proactive intervention before the far-term(>100 a)phase.In Class I landfills,leakage was primarily concentrated during the operational phase and stabilized post-closure;therefore,management focused on waste toxicity re-inspection and temporary covering during the operational period.2)Contamination Control Effectiveness:Raw and water-washed EMR presented significant exceedance risks from the medium term onward,whereas stabilized EMR maintained a non-zero exceedance probability in the long term.Only the"water-washed-stabilized"synergistic process achieved a zero exceedance probability throughout the entire lifecycle.3)Health Risk Assessment:The Hazard Quotient(HQ)for children was generally higher than that for adults.The application of the water-washed-stabilized synergistic process reduced the HQ values for both Mn and NH4-N to near-zero levels,which rendered the risks negligible.In conclusion,the"water-washed-stabilized synergy+Class I landfill"mode balances optimal technical-economic feasibility with full-lifecycle environmental safety.This approach represents the optimal technical pathway for achieving pollutant compliance and comprehensive risk control in EMR disposal,providing scientific support for the refined management of manganese residue landfills.关键词
填埋场/锰渣/Landsim模型/地下水环境风险/概率风险评估Key words
landfill/manganese slag/landsim model/groundwater environmental risk/probabilistic risk assessment分类
资源环境引用本文复制引用
皮俊杰,高红,岳波,孟棒棒,尹毕珊,唐瑞冬,梁瑾慧..耦合HELP-Landsim模型的锰渣无害化工艺与填埋场类型全链条污染及健康风险评价[J].环境工程学报,2026,20(8):2684-2696,13.基金项目
贵州省科技厅资助项目(黔科合重大专项[2022]002) （黔科合重大专项[2022]002）
辽宁省科技厅资助项目(2024-MSLH-403) （2024-MSLH-403）
