Rehabilitation of Sg Kembong open dumpsite using Geographic Information System: A case study / Cindy Chai
Municipal solid waste disposal site has always posed serious environmental issues since its construction until the post closure stage. Generation of landfill gas and leachate towards the surroundings has caused various environmental and health hazards. To prevent the situation from deteriorating,...
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| Format: | Thesis |
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2012
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| Online Access: | http://studentsrepo.um.edu.my/8583/ http://studentsrepo.um.edu.my/8583/4/REHABILITATION_OF_SG_KEMBONG_OPEN_DUMPSITE__USING_GIS_A_CASE_STUDY.pdf |
| Summary: | Municipal solid waste disposal site has always posed serious environmental
issues since its construction until the post closure stage. Generation of landfill gas and
leachate towards the surroundings has caused various environmental and health hazards.
To prevent the situation from deteriorating, landfill rehabilitation of any unsanitary
disposal sites is momentous.
In accordance to the Tenth Malaysia Plan (2011-2015), the government will close and
rehabilitate the existing 158 unsanitary landfills by 2015 to ensure that solid waste
management is well-managed in a sustainable manner. Sungai Kembong Open
Dumpsite (SKOD) has been identified as one of the unsanitary landfill under the the
Kajang municipality in Selangor, Malaysia. It has been urged to close down due to its
leakage of leachate into the water body which has polluted the water treatment plant in
Semenyih that supplies the water to millions of residents. Therefore, SKOD was chosen
as a study area for the rehabilitation and safe closure process based on the guidelines
published by the Ministry of Housing and Local Government of Malaysia.
Given the increasing concern about the environmental and health hazard posed by the
open dumpsite, it is vital to rehabilitate the closed SKOD in a systematic and
technically-sound way. This research study was carried out to rehabilitate the closed
SKOD describing the conditions and evaluations on the environmental aspects including
groundwater quality, surface water quality, ambient air quality, landfill gas and leachate
characteristic. From the monitoring process, of particular concern was the high
concentration of coliform found in all groundwater samples ranging from 100 to
16000 CFU/100mL. Groundwater quality at NW3 was among the most polluted points.
Besides, the surface water quality at the downstream of Sungai Beranang has
deteriorated due to the activities carried out at SKOD. The methane gas produced was
considered high when the volume of methane gas recorded was 53.4%.
Inevitable, there is ample discussion on technical management on upgrading an
open dumpsite, but either little or no focus on how this management can be gathered
and integrated for easier access. This is because data related to the waste disposal sites
are generally lacking in Malaysia. Thus, this research study was carried out by using the
Geographic Information System (GIS) which can store and integrate data in facilitating
the process of rehabilitation in SKOD.
For the rehabilitation of SKOD, relevant data such as geological, groundwater quality,
water quality, leachate characteristic, landfill gas and waste composition were gathered
and assessed. The collected data was input in a GIS-based inventory. The proposed
database can accommodate new information on the landfill by updating the qualities of
groundwater, surface water and air. Besides, the database introduced can also
accommodate all the data in a comparable manner which can help the stakeholders in
making new policy and decision to improve the rehabilitation of SKOD.
The outcome of this research would definitely facilitate all the stakeholders and
practitioners involving in solid waste management. It can be served as a case study to
help in setting up a database in planning and management which is one of the technical
capability developments proposed in the National Strategic Plan for Solid Waste
Management in Malaysia. |
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