Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus

Landfill is one of the most widely employed methods for the disposal of municipal solid waste (MSW). Up to 95% of total MSW collected worldwide is disposed of in landfills. After landfilling, solid waste undergoes physico-chemical and biological changes. Consequently, the degradation of the organic...

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Main Author:	Mohd Idrus, Norhayati
Format:	Thesis
Language:	English
Published:	2008
Subjects:	Sanitary landfills
Online Access:	https://ir.uitm.edu.my/id/eprint/27244/1/TM_NORHAYATI%20MOHD%20IDRUS%20AS%2008_5.pdf
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spelling	my-uitm-ir.272442022-06-14T04:50:08Z Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus 2008 Mohd Idrus, Norhayati Sanitary landfills Landfill is one of the most widely employed methods for the disposal of municipal solid waste (MSW). Up to 95% of total MSW collected worldwide is disposed of in landfills. After landfilling, solid waste undergoes physico-chemical and biological changes. Consequently, the degradation of the organic fraction of the wastes in combination with percolating rainwater leads to the generation of leachate. If not properly treated, leachate that seeps from a landfill can enter the underlying groundwater, thus posing potentially serious hazards to the surrounding environment and to public health. As a result, the search for effective and efficient treatment technologies landfill leachate has intensified in recent years. In this study, the applicability and treatment performance of physicochemical methods and biological method (as either individual and/or combined) for landfill leachate are reviewed. The study on coagulation-flocculation and Fenton's reagent method as physico-chemical treatment process, while activated sludge and biofilter were used as biological treatment methods. The advantages and limitations of various techniques are evaluated. Their operating conditions such as pH, coagulant and coagulant aid dosage, characteristics of leachate in terms of COD, NH3-N, total-nitrogen and color concentration and treatment efficiency are compared. The results obtained indicate that individual physico-chemical treatment is less effective than the integrated treatment. It is found that Fenton’s reagent could remove highest, of COD, NH3-N, total-nitrogen and color from landfill leachate, namely 89%, 95%, 86% and 81%, respectively, when compared to coagulation and flocculation process. A combination of physico-chemical and biological treatment has demonstrated high efficiency for the treatment of stabilized leachate. Almost complete removal of COD, NH3-N, totalnitrogen and color from landfill leachate, has been accomplished by a combination of Fenton’s reagent and a biofilter, namely 93.5%, 97.7%, 98.0% and 99.2%, respectively. 2008 Thesis https://ir.uitm.edu.my/id/eprint/27244/ https://ir.uitm.edu.my/id/eprint/27244/1/TM_NORHAYATI%20MOHD%20IDRUS%20AS%2008_5.pdf text en public masters Universiti Teknologi MARA Faculty of Applied Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Sanitary landfills
spellingShingle	Sanitary landfills Mohd Idrus, Norhayati Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus
description	Landfill is one of the most widely employed methods for the disposal of municipal solid waste (MSW). Up to 95% of total MSW collected worldwide is disposed of in landfills. After landfilling, solid waste undergoes physico-chemical and biological changes. Consequently, the degradation of the organic fraction of the wastes in combination with percolating rainwater leads to the generation of leachate. If not properly treated, leachate that seeps from a landfill can enter the underlying groundwater, thus posing potentially serious hazards to the surrounding environment and to public health. As a result, the search for effective and efficient treatment technologies landfill leachate has intensified in recent years. In this study, the applicability and treatment performance of physicochemical methods and biological method (as either individual and/or combined) for landfill leachate are reviewed. The study on coagulation-flocculation and Fenton's reagent method as physico-chemical treatment process, while activated sludge and biofilter were used as biological treatment methods. The advantages and limitations of various techniques are evaluated. Their operating conditions such as pH, coagulant and coagulant aid dosage, characteristics of leachate in terms of COD, NH3-N, total-nitrogen and color concentration and treatment efficiency are compared. The results obtained indicate that individual physico-chemical treatment is less effective than the integrated treatment. It is found that Fenton’s reagent could remove highest, of COD, NH3-N, total-nitrogen and color from landfill leachate, namely 89%, 95%, 86% and 81%, respectively, when compared to coagulation and flocculation process. A combination of physico-chemical and biological treatment has demonstrated high efficiency for the treatment of stabilized leachate. Almost complete removal of COD, NH3-N, totalnitrogen and color from landfill leachate, has been accomplished by a combination of Fenton’s reagent and a biofilter, namely 93.5%, 97.7%, 98.0% and 99.2%, respectively.
format	Thesis
qualification_level	Master's degree
author	Mohd Idrus, Norhayati
author_facet	Mohd Idrus, Norhayati
author_sort	Mohd Idrus, Norhayati
title	Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus
title_short	Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus
title_full	Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus
title_fullStr	Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus
title_full_unstemmed	Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus
title_sort	sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / norhayati mohd idrus
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2008
url	https://ir.uitm.edu.my/id/eprint/27244/1/TM_NORHAYATI%20MOHD%20IDRUS%20AS%2008_5.pdf
_version_	1783733942435708928

Sanitary landfill leachate treatment by physico-chemical and biological methods: a comparative study / Norhayati Mohd Idrus

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