Risk assessment of selected wastewater treatment plant in Klang Valley / Ooi Chin Hui
Since the industrial revolution at 18th century, the industrial activities increased considerably and the wastewater is discharged to the nearby river without treatment, which lead to disease outbreak. People start aware on the need of wastewater treatment for the sake of environment and human he...
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Format: | Thesis |
Published: |
2018
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Online Access: | http://studentsrepo.um.edu.my/9640/1/Ooi_Chin_Hui.jpg http://studentsrepo.um.edu.my/9640/11/chin_hui.pdf http://studentsrepo.um.edu.my/9640/ |
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Summary: | Since the industrial revolution at 18th century, the industrial activities increased
considerably and the wastewater is discharged to the nearby river without treatment,
which lead to disease outbreak. People start aware on the need of wastewater treatment
for the sake of environment and human health, and it became a compulsory to treat the
wastewater before discharge to the environment. However, while operating the
wastewater treatment plant, there will be risk associated in the operation, which
categorized into 3 main types: physical, health and environmental risk. Therefore, risk
assessment is used in order to understand the risk, and to develop control action in
dealing with the risk. It is carried out in a selected premise in Klang Valley which
including safety checklist, qualitative risk assessment, operators’ survey and cleaner
production assessment. According to the checklist, the manual handling and the waste
management in the premise are poor which is high possible to cause risk to the
operators and the environment. While from the qualitative risk assessment, the high risk
hazards are identified which required extra attention to control the risk. From the
operators’ survey, it is found out that the operators are poor in competency / knowledge
in safe operation, emergency preparation and response, and contribution to continual
safety improvement. Risk control is required to minimize the risk identified and to
improve the safety level in the premise by elimination, substitution, engineering control,
administrative control and personal protective equipment (PPE). Cleaner production
assessment is carried out to assess the possibility to reduce the resource usage and the
waste production hence lead to cost saving, from the assessment in the selected premise,
the resource can be reduced by reuse treated water instead of paying bill for clean water
usage, and use more energy saving electric starter: variable frequency drive (VFD). The
dried sludge produced by the premise content rich in nutrient value to be resell as
organic fertilizer to bring profit to the premise instead of direct disposal. |
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