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

Calabrò, Paolo S.; Gentili, E.; Carlo, Meoni; Orsi, Sirio; Komilis, Dimitrios

doi:10.1016/j.wasman.2018.03.007

Cited by 73 publications

(22 citation statements)

References 11 publications

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“…The production of municipal solid waste (MSW) increases with socio-economic condition development [2,3]. The climate, political and cultural conditions of Yasuj city and the growing development of industries and services have led to rapid population growth so that the city's population growth rate has been about 73.8 percent over the past 20 years (1991–2010).…”

Section: Introductionmentioning

confidence: 99%

Estimation of methane gas by LandGEM model from Yasuj municipal solid waste landfill, Iran

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Estimation of methane gas by LandGEM model from Yasuj municipal solid waste landfill, Iran

et al. 2019

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“…Due to the fact that membrane filtration processes do not degrade pollutants but only separate them, the separated concentrate contains most of the components separated from wastewater and should be neutralized or purified. The following methods of concentrate treatment are listed in the literature [6,32,37]: -recirculation, -incineration and solidification with other materials, -evaporation, -granulation, -purification to remove impurities, -utilization of the landfill in the block.…”

Section: Treatment Of the Concentrate From The Membrane Separation Prmentioning

confidence: 99%

“…The literature presents works on the impact of concentrate recirculation on the quality of leachates and indicates an increase in the value of COD, ammonium nitrogen and an increase in salinity in raw landfill leachates. As a consequence, this negatively affects the efficiency of the RO installation itself and reduces the value of impurity retention coefficients [6,24]. Another solution to the concentrate problem is their disposal or economic use.…”

Section: Treatment Of the Concentrate From The Membrane Separation Prmentioning

confidence: 99%

Treatment and Utilization of the Concentrate from Membrane Separation Processes of Landfill Leachates

Nowak

Włodarczyk‐Makuła

2020

Civil and Environmental Engineering Reports

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The purpose of the paper was to assess the effectiveness of selected physico-chemical processes to improve the quality of retentates/concentrates obtained during the treatment of landfill leachates using membrane separation. Among the physico-chemical methods, Advanced Oxidation Process (AOP) and electrocoagulation were analysed. Landfill leachate resulting from the infiltration of waste mass by atmospheric precipitation as well as the dissolution and leaching of waste components are most often subjected to membrane separation. Permeate is usually discharged to the receiver, while the concentrate is recirculated and sprinkled on a waste pile. However, such action is only the retention of impurities in the body of the landfill and has an impact on the chemistry of raw leachates. Due to the very high concentrations of organic and inorganic compounds identified in the retentate, it is necessary to treat it, which will effectively reduce the amount of impurities in the leachate. Economic use seems to be another solution. An example would be growing energy crops but such application requires additional research.

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“…In developed countries, possible options for leachate treatment include co-treatment with municipal wastewater and transportation to an ex situ treatment facility; however, even these treatment processes are not practiced nor affordable. Other advanced techniques include reverse osmosis and recirculation of the concentrated leachate back to the landfill to avoid groundwater contamination [2]. In many developing countries, open dumpsites serve as a final 2 of 13 disposal point for the MSW; these are a burden for the environment as the leachate is not collected or treated.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Diethyl Phthalate Leached from Plastic Products in Municipal Solid Waste Using an Ozone-Based Advanced Oxidation Process

et al. 2019

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Plastic products in municipal solid waste result in the extraction of phthalates in leachate that also contains large amounts of organic matter, such as humic substances, ammonia, metals, chlorinated organics, phenolic compounds, and pesticide residues. Phthalate esters are endocrine disruptors, categorized as a priority pollutant by the US Environmental Protection Agency (USEPA). Biological processes are inefficient at degrading phthalates due to their stability and toxic characteristics. In this study, the peroxone (ozone/hydrogen peroxide) process (O3/H2O2), an O3-based advanced oxidation process (AOP), was demonstrated for the removal of diethyl phthalate (DEP) in synthetic leachate simulating solid-waste leachate from an open dump. The impact of the O3 dose during DEP degradation; the formation of ozonation intermediate by-products; and the effects of H2O2 dose, pH, and ultraviolet absorbance at 254 nm (UVC) were determined during ozonation. Removal of 99.9% of an initial 20 mg/L DEP was obtained via 120 min of ozonation (transferred O3 dose = 4971 mg/L) with 40 mg/L H2O2 in a semi-batch O3 system. Degradation mechanisms of DEP along with its intermediate products were also determined for the AOP treatment. Indirect OH radical exposure was determined by using a radical probe compound (pCBA) in the O3 treatment.

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

Cited by 73 publications

References 11 publications

Estimation of methane gas by LandGEM model from Yasuj municipal solid waste landfill, Iran

Estimation of methane gas by LandGEM model from Yasuj municipal solid waste landfill, Iran

Treatment and Utilization of the Concentrate from Membrane Separation Processes of Landfill Leachates

Treatment of Diethyl Phthalate Leached from Plastic Products in Municipal Solid Waste Using an Ozone-Based Advanced Oxidation Process

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