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

Table D-2 Details of calculation of the material flow of plastics in Thailand, 2010 (continued)
No. Description
51
Residue waste
from oil
recovery
Value
(Tonnes/year)
4,526
52 Stock in landfill 1,027,224
53
Plastic waste
for recycling
256,934
54 Imported waste 17,760
202
Assumption and Calculation
From the Hua-Hin municipality presentation, 20% of residue wastes will be produced from 100% of
plastic waste feeding (PCD, 2010). The assumption is all oil recovery plants in the municipalities and
private companies have the same production capacity.
The total amounts of plastic waste feeding into oil recovery plant are 22,630 tonnes/year (15,330
tonnes/year from landfill excavation and 7,300 tonnes/year from municipal waste). Thus, the amount
of residue waste generation from oil recovery plants is 4,526 tonnes/year.
From, Stock = input of process - output of process
Thus, Stock = (59,135 + 4,526 + 320,595 + 7,423 + 686,668 + 6,707 – 42,500 - 15,330) = 1,027,224
tonnes/year
According to PCD (2010), 14% of municipal solid wastes were recycled. The amount of
thermoplastic waste which is used to calculate is 1,835,242 tonnes/year because 2,041,032
tonnes/year of thermoplastic waste is deducted by 205,790 tonnes/year of exported waste before
calculation. Therefore, the amount of waste recycling was 256,934 tonnes/year in 2010.
The amount of imported plastic waste means that amounts of plastic wastes which are imported from
other countries. This number is shown in the Custom Department. It can be searched on the website
by use the specific code of plastic wastes (HS-Code).
The plastic waste codes consist of 3915.1000.000 (waste of polyethylene), 3915.3000.000 (waste of
PVC), 3915.9010.000 (waste of copolymer of vinyl acetate and chloride), and 3915.9090.000 (waste
of other plastics), and it does not include thermosetting wastes (Custom Department, 2013). The
amount of imported and exported plastic wastes in 2007-2011 are shown in Table D-4.