Organic Waste Recycling

Characteristics of organic wastes 43

Temperature

(ºC)46-7730-65 32-77 32-7536-5330-51 30-5145-49 31-33

pH

4.0-4.34.7-5.94.3-4.74.3-4.73.9-4.84.9-6.6 4.1-6.34.5-4.95.6-7.1

Oil and grease^18500

(^8001100960011500)

• 820086000180

Total

N (^490) 14.5 60 265450 39 230720 15
Total
P 285
20.5^421632302813533073
SS
28000850 1250 1000020000680 750031000360
TS
450001300 6000 23000310002180 1550047500840
BOD
a/
COD0.47 0.56 0.53 0.490.370.57 0.550.46 0.61
BOD
a
300001050 5500 14000168001600 1000028500460
COD 640001860 103002850045002800 1830061000750
Measuring station Oil clarification room Boiler house and hydrocyclones Sterilizer building and press stationCombined flow Oil clarification room Boiler house, sterilizer building and hydrocyclones Combined flow ((1+2) Sterilizer building and clarification room Miscellaneous sources
Table 2.12 Fifty percentile values of palm oil wastewater characterisPalm oil mill Plant A (Malaysia) Plant B (Malaysia) Plant D (Thailand)
tics at different sampling stations (all values are in mg/
L,
except pH which is dimensionless and temperature is in ºC) (Thanh
et al.
1980)
a For plant in Malaysia, BOD was measured at 30ºC for 3 days. For plants in Thailand, BOD was measured at 20ºC for 5 days