Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review
Leachate generation is among the main challenging issues that landfill operators must handle. Leachate is created when decomposed materials and rainwater pass through the waste. Leachate carries many harmful pollutants, with high concentrations of BOD, COD, colour, heavy metals, ammoniacal nitrogen...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/2073-4441/15/6/1249 |
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| author | Hamidi Abdul Aziz Siti Fatihah Ramli Yung-Tse Hung |
| author_facet | Hamidi Abdul Aziz Siti Fatihah Ramli Yung-Tse Hung |
| author_sort | Hamidi Abdul Aziz |
| collection | DOAJ |
| description | Leachate generation is among the main challenging issues that landfill operators must handle. Leachate is created when decomposed materials and rainwater pass through the waste. Leachate carries many harmful pollutants, with high concentrations of BOD, COD, colour, heavy metals, ammoniacal nitrogen (NH<sub>3</sub>-N), and other organic and inorganic pollutants. Among them, COD, colour, and NH<sub>3</sub>-N are difficult to be completely eliminated, especially with a single treatment. They should be handled by appropriate treatment facilities before being safely released into the environment. Leachate remediation varies based on its properties, the costs of operation and capital expenditures, as well as the rules and regulations. Up until now, much scientific and engineering attention was given to the development of comprehensive solutions to leachate-related issues. The solutions normally demand a multi-stage treatment, commonly in the form of biological, chemical, and physical sequences. This review paper discussed the use of contemporary techniques to remediate landfill leachate with an emphasis on concentrated COD, colour, and NH<sub>3</sub>-N levels with low biodegradability that is normally present in old landfill or dumping grounds in developing countries. A semi-aerobic type of landfill design was also discussed, as this concept is potentially sustainable compared to others. Some of the challenges and future prospects were also recommended, especially for the case of Malaysia. This may represent landfills or dumpsites in other developing countries with the same characteristics. |
| first_indexed | 2024-03-11T05:45:06Z |
| format | Article |
| id | doaj.art-c24ae3baea8949588b36e519c8f3c758 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T05:45:06Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-c24ae3baea8949588b36e519c8f3c7582023-11-17T14:28:33ZengMDPI AGWater2073-44412023-03-01156124910.3390/w15061249Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A ReviewHamidi Abdul Aziz0Siti Fatihah Ramli1Yung-Tse Hung2School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, MalaysiaSolid Waste Management Cluster, Science & Engineering Research Centre, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, MalaysiaDepartment of Civil and Environmental Engineering, Cleveland State University, Cleveland, OH 44115, USALeachate generation is among the main challenging issues that landfill operators must handle. Leachate is created when decomposed materials and rainwater pass through the waste. Leachate carries many harmful pollutants, with high concentrations of BOD, COD, colour, heavy metals, ammoniacal nitrogen (NH<sub>3</sub>-N), and other organic and inorganic pollutants. Among them, COD, colour, and NH<sub>3</sub>-N are difficult to be completely eliminated, especially with a single treatment. They should be handled by appropriate treatment facilities before being safely released into the environment. Leachate remediation varies based on its properties, the costs of operation and capital expenditures, as well as the rules and regulations. Up until now, much scientific and engineering attention was given to the development of comprehensive solutions to leachate-related issues. The solutions normally demand a multi-stage treatment, commonly in the form of biological, chemical, and physical sequences. This review paper discussed the use of contemporary techniques to remediate landfill leachate with an emphasis on concentrated COD, colour, and NH<sub>3</sub>-N levels with low biodegradability that is normally present in old landfill or dumping grounds in developing countries. A semi-aerobic type of landfill design was also discussed, as this concept is potentially sustainable compared to others. Some of the challenges and future prospects were also recommended, especially for the case of Malaysia. This may represent landfills or dumpsites in other developing countries with the same characteristics.https://www.mdpi.com/2073-4441/15/6/1249physicochemicalsolid wasteCODcolourlandfillleachate |
| spellingShingle | Hamidi Abdul Aziz Siti Fatihah Ramli Yung-Tse Hung Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review Water physicochemical solid waste COD colour landfill leachate |
| title | Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review |
| title_full | Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review |
| title_fullStr | Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review |
| title_full_unstemmed | Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review |
| title_short | Physicochemical Technique in Municipal Solid Waste (MSW) Landfill Leachate Remediation: A Review |
| title_sort | physicochemical technique in municipal solid waste msw landfill leachate remediation a review |
| topic | physicochemical solid waste COD colour landfill leachate |
| url | https://www.mdpi.com/2073-4441/15/6/1249 |
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