Leachate Quality

When approaching the study of new processes for leachate treatment, each influencing variable should be kept under control to better comprehend the treatment process. However, leachate quality is difficult to control as it varies dramatically from one landfill to another, and in line with landfill ageing. To overcome this problem, the present study investigated the option of preparing a reliable artificial leachate in terms of quality consistency and representativeness in simulating the composition of real municipal solid waste (MSW) leachate, in view of further investigate the recent treatment process using black soldier fly (BSF) larvae. Two recipes were used to simulate a real leachate (RL): one including chemical ingredients alone (artificial synthetic leachate-SL), and the other including chemicals mixed with artificial food waste (FW) eluate (artificial mixed leachate-ML). Research data were analysed, elaborated and discussed to assess simulation performance according to a series of parameters, such as Analytical representativeness, Treatment representativeness (in this case specific for the BSF larvae process), Recipe relevance, Repeatability and Flexibility in selectively modifying individual quality parameters. The best leachate simulation performance was achieved by the synthetic leachate, with concentration values generally ranging between 97% and 118% of the RL values. When feeding larvae with both RL and SL, similar mortality values and growth performance were observed.

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Improved landfill leachate quality using ozone, UV solar radiation, hydrogen peroxide, persulfate and adsorption processes

Journal of Environmental Management ◽

10.1016/j.jenvman.2018.11.030 ◽

2019 ◽

Vol 232 ◽

pp. 45-51 ◽

Cited By ~ 17

Author(s):

Rodrigo Poblete ◽

Isabel Oller ◽

Manuel I. Maldonado ◽

Ernesto Cortes

Keyword(s):

Hydrogen Peroxide ◽

Solar Radiation ◽

Landfill Leachate ◽

Adsorption Processes ◽

Leachate Quality

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Impact of intermittent aerations on leachate quality and greenhouse gas reduction in the aerobic–anaerobic landfill method

Waste Management ◽

10.1016/j.wasman.2015.10.018 ◽

2016 ◽

Vol 55 ◽

pp. 71-82 ◽

Cited By ~ 11

Author(s):

Mitali Nag ◽

Takayuki Shimaoka ◽

Teppei Komiya

Keyword(s):

Greenhouse Gas ◽

Greenhouse Gas Reduction ◽

Leachate Quality

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The influence of a green roof drainage layer on retention capacity and leakage quality

Water Science & Technology ◽

10.2166/wst.2018.283 ◽

2018 ◽

Vol 77 (12) ◽

pp. 2886-2895 ◽

Cited By ~ 6

Author(s):

Anna Baryła ◽

Agnieszka Karczmarczyk ◽

Andrzej Brandyk ◽

Agnieszka Bus

Keyword(s):

Water Quality ◽

Green Roof ◽

Life Sciences ◽

Meteorological Station ◽

Runoff Water ◽

Retention Capacity ◽

Drainage Layer ◽

Second Year ◽

Substrate Moisture ◽

Leachate Quality

Abstract The aim of the research was to determine the influence of the substrate and different drainage materials on retention capacity and runoff water quality from three green roof containers. Phosphates were chosen as the water quality indicator based on their potential adverse impact on water quality in urban rainwater collectors. The field experiment was conducted at the Warsaw University of Life Sciences Water Center meteorological station in years 2013–2015. In terms of precipitation, the monitoring period covered a wet (+147.1 mm), average (+42.7 mm) and dry (− 66.3 mm) year. Leakage from the containers was recorded when the substrate moisture exceeded 20% and precipitation exceeded 3.5 mm/d for washed gravel, or 5.0 mm/d for a polypropylene mat and expanded clay. Phosphates were observed in leachates from all containers, with higher values observed in the second year of monitoring. As the result of this study, it can be concluded that the polypropylene mat and aggregates create different conditions for the formation of the leachate, in both volumes and its chemistry. The drainage layer made from a polypropylene mat is the most effective in terms of rainwater retention capacity and the resulting leachate quality.

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Comprehensive assessment of the leachate quality and its pollution potential from six municipal waste dumpsites of India

Bioresource Technology Reports ◽

10.1016/j.biteb.2019.03.003 ◽

2019 ◽

Vol 6 ◽

pp. 198-206 ◽

Cited By ~ 4

Author(s):

Mohit Somani ◽

Manoj Datta ◽

S.K. Gupta ◽

T.R. Sreekrishnan ◽

G.V. Ramana

Keyword(s):

Comprehensive Assessment ◽

Municipal Waste ◽

Pollution Potential ◽

Leachate Quality

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Impact of MSWI Bottom Ash Codisposed with MSW on Landfill Stabilization with Different Operational Modes

BioMed Research International ◽

10.1155/2014/167197 ◽

2014 ◽

Vol 2014 ◽

pp. 1-10 ◽

Cited By ~ 3

Author(s):

Wen-Bing Li ◽

Jun Yao ◽

Zaffar Malik ◽

Gen-Di Zhou ◽

Ming Dong ◽

...

Keyword(s):

Organic Matter ◽

Municipal Solid Waste ◽

Solid Waste ◽

Bottom Ash ◽

Acid Neutralizing Capacity ◽

Waste Incinerator ◽

Mswi Bottom Ash ◽

Neutralizing Capacity ◽

Leachate Quality ◽

The Impact

The aim of the study was to investigate the impact of municipal solid waste incinerator (MSWI) bottom ash (BA) codisposed with municipal solid waste (MSW) on landfill stabilization according to the leachate quality in terms of organic matter and nitrogen contents. Six simulated landfills, that is, three conventional and three recirculated, were employed with different ratios of MSWI BA to MSW. The results depicted that, after 275-day operation, the ratio of MSWI BA to fresh refuse of 1 : 10 (V : V) in the landfill was still not enough to provide sufficient acid-neutralizing capacity for a high organic matter composition of MSW over 45.5% (w/w), while the ratio of MSWI BA to fresh refuse of 1 : 5 (V : V) could act on it. Among the six experimental landfills, leachate quality only was improved in the landfill operated with the BA addition (the ratio of MSWI BA to fresh refuse of 1 : 5 (V : V)) and leachate recirculation.

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Solid Waste Landfilling ◽

10.1016/b978-0-12-407721-8.00026-7 ◽

2018 ◽

pp. 511-539 ◽

Cited By ~ 3

Author(s):

Hans-Jürgen Ehrig ◽

Rainer Stegmann

Keyword(s):

Leachate Quality

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Examination on Influence Caused by Air Injection Manners Changing in Aerobic-Anaerobic Landfill Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.768.310 ◽

2015 ◽

Vol 768 ◽

pp. 310-317

Author(s):

Gang Zhen Jiao ◽

Lei Zhang ◽

Xiong Shi ◽

Gui Fu

Keyword(s):

Numerical Simulation ◽

Mathematical Model ◽

Organic Carbon ◽

Simulation Model ◽

Solid Phase ◽

Landfill Gas ◽

Air Injection ◽

Carbon And Nitrogen ◽

Speed Up ◽

Leachate Quality

In this study, aerobic-anaerobic landfill method (AANM) is focused on as a new way to speed up landfill stabilization, inhibit landfill gas flux, and ameliorate on leachate quality. Numerical simulation model is developed to guide the air injection craftwork and study its effect on achieving above goals. On basis of work finished in last period (0~310 days), air was injected into Lysimeters A (Lys.A) at 0.5 m, and at 2.5 m in Lys.B with the same rate of 1 L/min. In Lys.C there is no air injected. In order to interview the influence by air injection manners changing, from 310 days till 360 days, air injection manners are changed from Mono-site into Double-site in Lys.A and in Lys. B it will be changed from bottom-site (2.5m) into middle-site (1.5m). In Lys.C there will be no changing. By interviewing the comparisons on simulated results in 50 days with and without air injection manners changing, it was found that air injection manners changing in Lys.A causes TOC discharging amount increase more than 6 times, but T-N and GHE resulted from landfill gas decrease 24.1% and 71 % respectively. Air injection manners changing in Lys.B resulted in discharged TOC and T-N increase 108.1 % and 53.5 % respectively, while T-N decreases 3.7 %. On basis of mechanism assumption, mathematical model was developed and according to the simulated results for 5 years, air injected at 2.5 m achieved improvements on stabilization of solid phase organic carbon and nitrogen for 34 % and 13 %, amelioration on leachate quality for 35 % and 62 % of TOC and T-N, and the restraint of GHE for 14 times compared with no air injection case.

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