Santos Amanda Vitória, Andrade Laura Hamdan de, Amaral Míriam Cristina Santos, Lange Liséte Celina
a Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais , Belo Horizonte , Brazil.
b Department of Chemical Engineering, Pontifical Catholic University of Minas Gerais , Belo Horizonte , Brazil.
Environ Technol. 2019 Sep;40(22):2897-2905. doi: 10.1080/09593330.2018.1458337. Epub 2018 Apr 6.
The appropriate treatment of sanitary landfill leachate is one of the greatest challenges nowadays due to the large volumes of solid waste generated. Thus, the aim of this study is to evaluate the performance of different routes involving the integration of advanced oxidation processes based on Fenton's reagents (AOP-Fenton) and microfiltration (MF) and nanofiltration (NF) membrane processes for the treatment of landfill leachate. MF module configuration (submerged or sidestream) and MF and NF recovery rate were evaluated. The combination of AOP-Fenton, MF and NF proved to be an effective treatment for landfill leachate. High removal efficiencies of chemical oxidation demand (94-96%) and colour (96-99%) were obtained. The configuration named route 3, composed of MF of raw landfill leachate (MF1), POA-Fenton-MF2 of the MF1 concentrate and NF of both MF1 and MF2 permeates, showed a higher global water recovery and was responsible for lower waste generation. It was considered the best one in terms of environmental, technical and economical aspects.
由于产生的固体废物量巨大，卫生填埋渗滤液的适当处理是当今最大的挑战之一。因此，本研究的目的是评估不同处理路线的性能，这些路线涉及基于芬顿试剂的高级氧化工艺（AOP-芬顿）与微滤（MF）和纳滤（NF）膜工艺相结合来处理垃圾渗滤液。评估了MF模块配置（浸没式或侧流式）以及MF和NF的回收率。事实证明，AOP-芬顿、MF和NF的组合是处理垃圾渗滤液的有效方法。化学需氧量（94-96%）和色度（96-99%）的去除效率很高。名为路线3的配置由原生垃圾渗滤液的MF（MF1）、MF1浓缩液的POA-芬顿-MF2以及MF1和MF2渗透液的NF组成，显示出更高的总体水回收率，且产生的废物更少。从环境、技术和经济方面来看，它被认为是最佳配置。
