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Determination of acceleration and stabilization indicators for buried municipal wastes. Study of leachates recirculation impact on waste columns; Determination d'indicateurs d'acceleration et de stabilisation de dechets menagers enfouis. Etude de l'impact de la recirculation de lixiviats sur colonnes de dechets

Abstract

The main goal of this research work was to study the stabilisation processes of municipal solid waste (MSW). Representative parameters, which are required to evaluate the stabilization state of wastes, were applied to study the acceleration of the degradation processes in lab-scale landfill anaerobic bioreactors operated with leachate recirculation. The characterisation of the wastes solid phase (i.e., volatile solids, organic carbon, fines, paper-cardboard and degraded component contents) is necessary to assess its degradation state. However, additional parameters are required such as the characterisation of water extracted from the waste (i.e., Chemical Oxygen Content (COD), Dissolved Oxygen Content (DOC) and ions content) and biogas composition (methane potential). Those parameters are nevertheless complementary to conclude on its polluting feature. The analysis of more specific indicators such as the organic macromolecules content in leachates and the evaluation of the metal contamination level in solid waste and its potential remobilization was showed to be consistent for the evaluation of waste stabilisation state. The composition of leachates used during recirculation influences greatly the waste leaching behaviour. For instance, the recirculation of a stabilised leachate containing organic macromolecules can increase the release of pollutants (organics and minerals) if contacted with young waste or on the other  More>>
Authors:
Publication Date:
May 15, 2004
Product Type:
Thesis/Dissertation
Report Number:
FRNC-TH-6438
Reference Number:
RN06037501; TVI: 0603
Resource Relation:
Other Information: TH: These chimie et microbiologie de l'eau
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; MUNICIPAL WASTES; STABILIZATION; BIODEGRADATION; LEACHATES; FERMENTATION; METHANE; CHLORIDES; BIOREACTORS; QUANTITATIVE CHEMICAL ANALYSIS; ORGANIC COMPOUNDS; MOISTURE; POLLUTANTS; PH VALUE; REDOX POTENTIAL; ELECTRIC CONDUCTIVITY; GRAIN SIZE; ENVIRONMENTAL IMPACTS; METALS
OSTI ID:
20700053
Research Organizations:
Limoges Univ., 87 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0600658
Availability:
Commercial reproduction prohibited; OSTI as DE20700053
Submitting Site:
FR
Size:
161 pages
Announcement Date:
Apr 10, 2006

Citation Formats

Francois, V. Determination of acceleration and stabilization indicators for buried municipal wastes. Study of leachates recirculation impact on waste columns; Determination d'indicateurs d'acceleration et de stabilisation de dechets menagers enfouis. Etude de l'impact de la recirculation de lixiviats sur colonnes de dechets. France: N. p., 2004. Web.
Francois, V. Determination of acceleration and stabilization indicators for buried municipal wastes. Study of leachates recirculation impact on waste columns; Determination d'indicateurs d'acceleration et de stabilisation de dechets menagers enfouis. Etude de l'impact de la recirculation de lixiviats sur colonnes de dechets. France.
Francois, V. 2004. "Determination of acceleration and stabilization indicators for buried municipal wastes. Study of leachates recirculation impact on waste columns; Determination d'indicateurs d'acceleration et de stabilisation de dechets menagers enfouis. Etude de l'impact de la recirculation de lixiviats sur colonnes de dechets." France.
@misc{etde_20700053,
title = {Determination of acceleration and stabilization indicators for buried municipal wastes. Study of leachates recirculation impact on waste columns; Determination d'indicateurs d'acceleration et de stabilisation de dechets menagers enfouis. Etude de l'impact de la recirculation de lixiviats sur colonnes de dechets}
author = {Francois, V}
abstractNote = {The main goal of this research work was to study the stabilisation processes of municipal solid waste (MSW). Representative parameters, which are required to evaluate the stabilization state of wastes, were applied to study the acceleration of the degradation processes in lab-scale landfill anaerobic bioreactors operated with leachate recirculation. The characterisation of the wastes solid phase (i.e., volatile solids, organic carbon, fines, paper-cardboard and degraded component contents) is necessary to assess its degradation state. However, additional parameters are required such as the characterisation of water extracted from the waste (i.e., Chemical Oxygen Content (COD), Dissolved Oxygen Content (DOC) and ions content) and biogas composition (methane potential). Those parameters are nevertheless complementary to conclude on its polluting feature. The analysis of more specific indicators such as the organic macromolecules content in leachates and the evaluation of the metal contamination level in solid waste and its potential remobilization was showed to be consistent for the evaluation of waste stabilisation state. The composition of leachates used during recirculation influences greatly the waste leaching behaviour. For instance, the recirculation of a stabilised leachate containing organic macromolecules can increase the release of pollutants (organics and minerals) if contacted with young waste or on the other hand the release of pollutant is reduced when the leachate composition is similar to the organic species, which are expected to be released by the wastes. Due to the experimental limits of the leaching tests, several lab-scale landfill anaerobic bioreactors containing different wastes types (height of 1 m and mass of waste varying from 28 kg to 65 kg) were operated to study the effects of recirculation on the waste degradation at flow rate of 540 mL per day. The speed-up of waste degradation was clearly established from global parameters measured on leachate (COD, content of volatile fatty acids, alkalinity, conductivity) and on biogas (% CH{sub 4} and % CO{sub 2}) for young waste containing different amount easily degradable compounds. The leaching of pollutants (i.e., quantity of oxidizable compounds and biogas produced) is emphasized by this type of phenomenon. The leaching of pollutants increase from 1.7 to 2 times compared to the columns without recirculation. Phenomena of accumulation are however noticed for certain ionic species such as chlorides and ammonia, which is related to the waste degradation state. After 400-500 days of operation, the wastes contained in landfill anaerobic bioreactors seem to reach a stabilised state as shown by the analysis of the leachate and biogas composition. For instance, the methane potential is reached in particular for the 8 years old waste with leachate recirculation. (author)}
place = {France}
year = {2004}
month = {May}
}