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FOOD
PROCESSING FACILITIES WASTES COMPOSTING |
The author has
recently provided consultation to some certain food processing
facilities and encouraged them to recover wastes from their
operation, that is, corn wastes of the Sun Sweet Co.,Ltd.
(Chiang Mai Thailand), ripen mangoes peels and orange and
lemon of the Lanna Agro Industry Co., Ltd. (Chiang Mai Thailand).
These wastes are found to be very suitable for the ASP system.
They can be turned also into high quality compost in 30-60
days, without giving disturbing odors or any effect on the
environment. The facilities are presently producing compost
for internal use among their contract farmers. This practice
is lead to a good waste management, a good manufacturing practice
(GMP), and a way to add value to wastes for other food processing
facilities.
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Given that many factories produce up to 100 tons of waste
each day, the author has engaged in a preliminary experiment
with the Windrow Composting method where a wheel loader was
used to turn the piles. It was found that, after daily turning
for 30 days, moisture was maintained at 45 - 55% and C/N ratio
was at 20:1-25:1, five tons of compost could be produced from
corn wastes and met the Thailand Organic Fertilizer Standard
requirements. The practice was not free of difficulties, however,
the turning was time and space consuming and not very cost
efficient in terms of fuel as it was difficult to thoroughly
turn the piles. Further study should be conducted in order
to identify a technology which may be able to address the
problems for these food processing facilities, e.g., Compost
Turner or Rotary Drum In-Vessel system.
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Compost
Turner |
Rotary
Drum In-Vessel system |
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