Martínez-Cruz Alfredo, Rojas Valencia María Neftalí, Araiza-Aguilar Juan A, Nájera-Aguilar Hugo A, Gutiérrez-Hernández Rubén F
National Autonomous University of Mexico, Institute of Engineering, External Circuit, University City, Mayoralty Coyoacan, Mexico City, Mexico.
University of Science and Arts of Chiapas, School of Environmental Engineering, North beltway 1150, Lajas Maciel, 29039, Tuxtla Gutierrez, Chiapas, Mexico.
Heliyon. 2021 Jul 8;7(7):e07510. doi: 10.1016/j.heliyon.2021.e07510. eCollection 2021 Jul.
The main aim of this research was to compare a bio-coagulant, organic coagulant, and a conventional coagulant applied to the treatment of leachates. Coagulant options were Stage 1 FeCl, Stage 2 Polyamine, and Stage 3 mucilage (OFM). Optimal conditions for maximum chemical oxygen demand (COD) removal were determined by experimental data and Response Surface Methodology. The application of Multiple Criteria Decision Analysis using Multi-Criteria Matrix (MCM) was explored by evaluating the Coagulation-Flocculation processes. Maximum COD removal (%) and the best MCM scores (on a scale from 0 to 100) were: Stage 1: 69.2±0.9 and 48.50, Stage 2: 37.8±1.1 and 79.0, and Stage 3: 71.1±1.7, and 81.5. Maximum COD removal using FeCl and OFM was not statistically different (p 0.15 < 0.05). OFM extraction process was evaluated (yield 0.70 ± 1.17%, carbohydrate content 32.6 ± 1.18%). MCM allows the evaluation of additional technical aspects, besides oxygen COD removal, as well as economic aspects, permitting a more comprehensive analysis. Significant COD removals indicate that the use of as a coagulant in the treatment of stabilized leachate was effective. cladodes, a residue, were used to treat another residue (leachates).
本研究的主要目的是比较一种生物凝聚剂、有机凝聚剂和一种传统凝聚剂在渗滤液处理中的应用。凝聚剂选项分别为第1阶段的氯化铁、第2阶段的聚胺和第3阶段的黏液（OFM）。通过实验数据和响应面方法确定了去除最大化学需氧量（COD）的最佳条件。通过评估混凝-絮凝过程，探索了使用多标准矩阵（MCM）的多标准决策分析的应用。最大COD去除率（%）和最佳MCM分数（范围为0至100）分别为：第1阶段：69.2±0.9和48.50，第2阶段：37.8±1.1和79.0，第3阶段：71.1±1.7和81.5。使用氯化铁和OFM时的最大COD去除率在统计学上没有差异（p<0.05，p 0.15）。对OFM提取过程进行了评估（产率0.70±1.17%，碳水化合物含量32.6±1.18%）。MCM除了能评估除氧COD去除之外的其他技术方面，还能评估经济方面，从而允许进行更全面的分析。显著的COD去除表明，使用[此处原文缺失相关内容]作为凝聚剂处理稳定化渗滤液是有效的。叶状枝，一种残渣，被用于处理另一种残渣（渗滤液）。
