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

Table A-3 Details of parameters and calculation method for collection and
transportation process
Parameter Calculation
PWP See the details in Table A-2 (IPW1, IPW2, and PWS)
EW The amount of exported plastic waste means that amounts of plastic wastes which are exported
to other countries. The assumption is thermosetting wastes are not exported to other countries.
This number was shown in the Custom Department. It was searched on the website by use the
specific code of plastic wastes (HS-Code). The HS-code of plastic waste is 3915. Table A-10
in Appendix A presents the details of HS-code of plastic pellet, product and waste.
MI The amount of municipal solid waste which is burnt in the municipal incinerators in 2010 was
reported by PCD. The amount of this flow which was calculated by using the reported
percentage of waste incineration in the municipal incineration multiplying by the amount of
plastic waste generation (PWP and PWS). The assumption is 1% of thermoplastic and
thermosetting wastes are burnt in the municipal incinerators. However, the amount of plastic
waste generation was deducted by the amount of exported waste before calculating the amount
of combusted wastes.
II2 The amount of plastic wastes from industries. The amount of industrial plastic waste
generation is presented in DIW report. The assumption is 95.6% of industrial plastic waste
generation is burnt in the industrial incineration and cement kiln.
L The amount of municipal solid waste which was disposed at landfill in 2010 was presented by
PCD. The assumption is 65% of thermosetting wastes and 37% of thermoplastic wastes are
disposed at landfill. The amount of this flow which was calculated by using the reported
percentage of waste disposal at landfill multiplying by the amount of plastic waste generation
(PWP and PWS). However, the amount of plastic waste generation was deducted by the
amount of exported waste before calculating the amount of landfilled wastes.
R The amount of municipal solid waste which was recycled in 2010 was reported by PCD. The
amount of this flow which were calculated by using the reported percentage of waste recycling
multiplying by the amount of plastic waste generation (PWP). However, the amount of plastic
waste generation was deducted by the amount of exported waste before calculating the amount
of recycled wastes.
UD The amount of municipal solid waste which was not disposed properly in 2010 was presented
by PCD. The assumption is 34% of thermoplastic and thermosetting wastes are expanded to
the environment. The amount of this flow which were calculated by using the reported
percentage of undisposed waste multiplying by the amount of plastic waste generation (PWP
and PWS). However, the amount of plastic waste generation was deducted by the amount of
exported waste before calculating the amount of undisposed wastes. Then, the undisposed
wastes are stocked in the environment.
Stock 3 The amount of stock means that amounts of plastic wastes are stocked during collection and
transportation. This amount was calculated automatically by STAN software.
Municipal incineration
This process includes plastic wastes which are burnt in the municipal incineration, off-gas
and residue waste which are generated as products of this process.
Figure A-4 Municipal incineration process
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