Evaluation of Plastic Waste Management in Thailand Using Material ...

Figure A-2 Plastic consumption process
Table A-2 Details of parameters and calculation method for plastic consumption
process
Parameter Calculation
PP and PS See the details in Table A-1
IP The amount of imported product means that amounts of plastic products which are imported
from other countries. The amount of imported products was assumed to exclude the amount
of thermosetting products, and this amount of imported products does not include the amount
of electrical and electronic devices and automotive parts because these plastics are imported
with the electrical and electronic industry and automotive industry.
PWP and
PWS
This number was shown in the Custom Department and Plastic Intelligence Unit Website. It
was searched on the website by use the specific code of plastic product (HS-Code). The range
of plastic code is in range 3916-3926. These HS-codes are only pure plastic products which
do not contain other materials such as metal, glass, and paper. Table A-10 in Appendix A
presents the details of HS-code of plastic pellet, product and waste.
The amount of plastic waste generation in 2010 was reported by the Pollution Control
Department (PCD). This amount of plastic waste generation is from municipal solid wastes
which are collected by the municipality in Thailand. It does not include agriculture waste, Ewaste,
construction and furniture waste, and automobile waste.
Plastic Intelligence Unit Website (2012) presented the amounts of plastic product in each
type e.g., agriculture, electronic and electrical devices, automobile, furniture and
construction. These kinds of plastic products have long lifespan, so the assumption is
sometimes used to complete the plastic waste flow. There are four assumptions which were
used in the material flow and described as below:
Agriculture product: 50% of agriculture plastic will become wastes
Electronic and electrical product: 5% of electronic and electrical plastic will
become wastes
Construction and furniture product: 5% of construction and furniture plastic will
become wastes
Automobile product: 5% of automobile plastic will become wastes
Finally, the total amounts of plastic waste generation from plastic consumption process were
calculated from the aggregate of plastic waste from each source (PCD, agriculture, E-waste,
automotive, and construction and furniture). However, this amount is only the total plastic
waste generation which consists of thermoplastic (PWP) and thermosetting wastes (PWS).
The assumption of thermosetting waste generation was considered to fulfill the number of
thermoplastic waste generation flow. The assumption is 1% of total plastic waste is
thermosetting waste generation. The actual amount of thermosetting waste generation must
be deducted with the amount of uncollected thermosetting wastes before filling the number
into PWS flow. The actual amount of thermoplastic waste generation must be deducted with
the amount of thermosetting waste generation (1% of total plastic waste) and the amount of
uncollected thermoplastic waste before filling the number into PWP flow.
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