Ren Xupicheng, He Xiang, Kong Deyong, Hu Xiaomin, Wang Fan
Institute of Resource and Civil Engineering, Northeastern University, Shenyang 110014, China.
Department of Architectural Engineering, Nanning College for Vocational Technology, Nanning 530000, China.
Water Sci Technol. 2025 Apr;91(8):893-906. doi: 10.2166/wst.2025.052. Epub 2025 Apr 16.
Landfill leachate and concentrates from nanofiltration (NF) and reverse osmosis (RO) processes pose potential environmental threats. This study investigates the seasonal variations in the physicochemical properties and acute toxicity of landfill leachate and concentrates from Shenyang, Liaoning, China. The hydrophilic matter (HyI) constituted the major component of dissolved organic matter (DOM) in landfill leachate (68.18% on average). Humic substances were enriched in NF and RO concentrates, accounting for 86.92 and 62.78%, respectively. Landfill leachate exhibited strong toxicity to , particularly in summer. Although biotreatment processes reduced toxicity, the concentrates remained toxic. Principal component analysis (PCA) revealed significant correlations between physicochemical variables and toxicity. Discriminant analysis indicated that certain variables could predict acute toxicity. This study highlights the need for effective management of landfill leachate and concentrates on mitigating environmental risks.
垃圾渗滤液以及纳滤（NF）和反渗透（RO）过程产生的浓缩液对环境构成潜在威胁。本研究调查了中国辽宁省沈阳市垃圾渗滤液和浓缩液的理化性质及急性毒性的季节性变化。亲水性物质（HyI）是垃圾渗滤液中溶解有机物（DOM）的主要成分（平均占68.18%）。腐殖物质在纳滤和反渗透浓缩液中富集，分别占86.92%和62.78%。垃圾渗滤液对[具体受试对象未给出]表现出很强的毒性，尤其是在夏季。尽管生物处理过程降低了毒性，但浓缩液仍然有毒。主成分分析（PCA）揭示了理化变量与毒性之间的显著相关性。判别分析表明某些变量可以预测急性毒性。本研究强调了有效管理垃圾渗滤液和浓缩液以减轻环境风险的必要性。
