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water, emissions and effluents
conservation of water
Water is a critical resource for both the plantations and the people living on the estates. As water resources are
scarce, we have built dams, wells and water treatment facilities to ensure a steady supply. Water for domestic
usage is drawn from ground water in several areas. In Riau, South Sumatra, North Sumatra, Java, Sulawesi and
Kalimantan, we have installed 61 water treatment facilities to provide water for our employees.
our water resources
Our plantations are watered by rainfall. 95% of the water required by the factories to process the FFB is drawn
from nearby rivers, with the remaining needs met by groundwater supplies.
Average Water Consumption (m3/tonne of FFB processed)
WATER CONSUMPTION RATIO
2010
2011
2012
Water Consumption Ratio
1.28
1.16
1.13
utilisation of palm oil mill effluents (POME)
Effluents from palm oil mills have been used since 1992 in land applications and as an effort to replace chemical
fertilisers. POME is collected in anaerobic open ponds on our estates for treatment. As the POME is intended
for use as fertiliser, we maintain a moderate Biochemical Oxygen Demand (BOD) level to retain nutrients in the
effluents. Our teams check and adjust the condition in the ponds every month to maintain the BOD level within
the legal requirements limit of 5,000 ppm for effluent land application. Maximum care and supervision are carried
out to ensure that no effluent would enter the river as surface run-off at all times.
Biochemical Oxygen Demand Level
Q
BOD average
Q
Maximum Limit on
Government Regulation
2012
2011
2010
1,000
2,000
3,000
4,000
5,000
6,000
Average BOD levels before land application in ppm.
Year
ppm
Sustainability Report 2 012
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