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垃圾填埋场液中的有机物和营养物质的低成本处理方法
G R Y Perera1, W K C Neetha Dayanthi2
1Department of Civil and Environmental Engineering, Faculty of Engineering, University of Ruhuna, Hapugala, Galle, Sri Lanka
Journal of water and health
|June 30, 2023
概括
低成本的复合吸附剂有效地从废水中去除化学氧气需求 (COD),总 (TN) 和总 (TP). 这项研究强调了一种可持续水处理和废物再利用的有希望的方法.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 废水处理需要有效地去除有机化合物,和.
- 传统的吸附剂可能很昂贵,并产生二次污染.
- 工业副产品,如脱水泥 (DAS) 和零价值铁 (ZVI) 经常被填埋.
研究的目的:
- 为了研究一种新型复合吸附剂在处理垃圾填埋场泄漏物的有效性.
- 为了评估化学氧气需求 (COD),总 (TN) 和总 (TP) 的去除.
- 探索DAS和ZVI在废水处理中的再利用潜力.
主要方法:
- 使用洗净的海砂 (WSS),DAS,ZVI和颗粒活性炭 (GAC) 制备了一种复合吸附剂.
- 进行了批量吸附实验,以评估去除效率和吸附能力.
- 吸附数据与等温模型相匹配,埃洛维奇模型显示最佳匹配.
主要成果:
- 复合吸附剂 (40% WSS,40% DAS,10% ZVI,10% GAC) 实现了79.93%的COD去除,其容量为8.5mg/g.
- 对于TN和TP的最大移除效率分别为84.9%和97.4%.
- 单个组件显示了不同的COD去除效率:GAC (100%),WSS (51.3%),ZVI (42%) 和DAS (16%).
结论:
- 开发的复合吸附剂在废水中同时去除COD,TN和TP方面表现出高效率.
- 埃洛维奇模型准确地描述了所有测试污染物的吸附过程.
- 这种复合吸附剂为废水处理提供了可持续且具有成本效益的解决方案,同时也为DAS和ZVI等工业副产品提供了有价值的应用.
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