Effect of the recirculation of a reverse osmosis concentrate on leachate generation: A case study in an Italian landfill

被引：66

作者：

Calabro, P. S. ^{[1
]}

Gentili, E. ^{[2
]}

Meoni, C. ^{[3
]}

Orsi, S. ^{[4
]}

Komilis, D. ^{[5
]}

机构：

[1] Univ Mediterranea Reggio Calabria, Dept Civil Energy Environm & Mat Engn, Via Graziella Loc, I-89122 Reggio Di Calabria, Italy

[2] Via Cavalieri Tau 18, I-50059 Fucecchio, FI, Italy

[3] Via Giovanni Pascoli 53-A, I-56038 Ponsacco, PI, Italy

[4] CMSA, Via L Ariosto 3, I-51016 Montecatini Terme, PT, Italy

[5] Democritus Univ Thrace, Dept Environm Engn, Xanthi, Greece

来源：

WASTE MANAGEMENT | 2018年 / 76卷

关键词：

Concentrate; Landfill; Leachate; Reverse osmosis; Recirculation; MUNICIPAL SOLID-WASTE; HEAVY-METALS;

D O I：

10.1016/j.wasman.2018.03.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

"Fossetto" landfill has been operating in the municipality of Monsummano Terme (Pistoia Province, Italy) since 1988; the authorized volume for landfilling is about 1,000,000 m(3); at the moment the plant is being mainly used to dispose of mechanically and biologically treated residual municipal solid waste. Since September 2006, an in-situ reverse osmosis leachate treatment plant has been operating to treat leachate. The treated water is being discharged into a small nearby stream while the concentrated leachate is being recirculated back into the landfill body following Italian Regulations and an authorization from the local authority (Pistoia Province). This paper presents monitoring results on leachate generation rates and composition for the past fifteen years. A moderate increase of the concentration of some of the monitored parameters occurred (e.g. ammonium, chlorides) and a decrease for most heavy metals. The increase of concentrations for Cl- and NH4+ was more evident in the leachate coming from the wells closer to reinjection area. However, the change in leachate composition did not affect the quality of the effluent from the leachate treatment plant. The annual volume of the generated leachate increased significantly right after the recirculation started. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：643 / 651

页数：9

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