Ahsan Amimul, Mat Ali Muhamad Jasarudin Bin, Rashid Md Redowan, Kabir Mozaher Ul, Shafiquzzaman Md, Imteaz Monzur, Idrus Syazwani, Aljaradin Mohammad, Alresheedi Mohammad T
Department of Civil and Environmental Engineering, Islamic University of Technology (IUT), Gazipur, 1704, Bangladesh.
Department of Civil and Construction Engineering, Swinburne University of Technology, Melbourne, Australia.
Sci Rep. 2025 Jan 2;15(1):560. doi: 10.1038/s41598-024-84157-x.
The increasingly concerning issue of water pollution caused by untreated leachate necessitates the implementation of effective wastewater treatment methods. This study addresses the crucial issue of landfill leachate treatment through an innovative and environmentally friendly approach that integrates electrolysis with palm-shell activated carbon contactors. The efficacy of an integrated process for pollutants removal was assessed involving electrolysis with aluminum and iron electrodes, activated carbon contactors with varying bed depths, and the influence of salinity. The findings of the study demonstrated significant advancements in the removal of pollutants from landfill leachate. The utilization of aluminum and iron electrodes in electrolysis has exhibited enhanced efficacy in the removal of several parameters, including ammonia nitrogen, total suspended solids (TSS), chemical oxygen demand (COD) and biochemical oxygen demand (BOD). The pollutants removal efficiency was further improved by implementing up-flow activated carbon treatment, with a bed depth of 15 cm yielding most favorable outcomes. Additionally, the investigation explored the impact of salinity on the efficacy of pollutants removal. Except for BOD, which demonstrated good removal efficiency even at 5% salt, results indicated that the removal effectiveness was maximum when no salt was applied to the samples. The results suggest that this integrated method offers a sustainable and effective solution for landfill leachate treatment, potentially leading to better water quality and environmental preservation. Future study should focus on implementing rigorous laboratory protocols, ensuring accurate dilution factors, refraining from reusing activated carbon, maintaining continuous monitoring throughout treatment operations, and investigating alternative treatment approaches. This study makes a valuable contribution to the ongoing endeavors aimed at tackling the environmental issues related to the treatment of landfill leachate.
未经处理的渗滤液所造成的水污染问题日益令人担忧，因此有必要实施有效的废水处理方法。本研究通过将电解与棕榈壳活性炭接触器相结合的创新且环保的方法，解决了垃圾渗滤液处理这一关键问题。评估了一种综合工艺去除污染物的效果，该工艺涉及使用铝电极和铁电极进行电解、不同床层深度的活性炭接触器以及盐度的影响。研究结果表明，在从垃圾渗滤液中去除污染物方面取得了显著进展。在电解过程中使用铝电极和铁电极，在去除包括氨氮、总悬浮固体（TSS）、化学需氧量（COD）和生化需氧量（BOD）等多个参数方面表现出更高的效率。通过实施上流活性炭处理进一步提高了污染物去除效率，床层深度为15厘米时产生了最有利的结果。此外，该研究还探讨了盐度对污染物去除效果的影响。除了BOD即使在5%的盐度下仍表现出良好的去除效率外，结果表明，当样品中不添加盐时，去除效果最佳。结果表明，这种综合方法为垃圾渗滤液处理提供了一种可持续且有效的解决方案，有可能带来更好的水质和环境保护。未来的研究应专注于实施严格的实验室方案，确保准确的稀释系数，避免重复使用活性炭，在整个处理过程中保持连续监测，并研究替代处理方法。本研究为正在进行的旨在解决与垃圾渗滤液处理相关的环境问题的努力做出了宝贵贡献。
