Figure 8 : Anaerobic pond in POMETS
COMPONENTS INI POME TREATMENT FACILITY SERIES OF ACTIVATED SLUDGE SYSTEM
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BOD3 INLET : 500 mg / L
Air Blower
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POME Inlet from Sedimentation Pond
Return Sludge
ACTIVATED SLUDGE SYSTEM
|
Return Sludge |
BOD3 OUTLET : < 100 mg / L |
POME inlet |
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|
|
|
|
Final Discharge |
AEROBIC TANK NO . 1 |
AEROBIC TANK NO . 2 |
CLARIFIER TANK NO . 1 |
AEROBIC TANK NO . 3 |
AEROBIC TANK NO . 4 |
CLARIFIER TANK NO . 2 |
AQUARATOR
PARAMETER |
CONTROL RANGE |
Dissolve Oxygen |
2 - 5 mg / L |
pH |
7 - 9 |
MLSS |
2000 – 6000 mg / L |
SSV30 |
15 – 35 % |
Plant Overview |
Control Parameter |
Figure 9 : Activated Sludge System Figure 9 : Activated Sludge System
blower , an air diffuser , a circulation system and a filtration system . Figure 9 shows the activated sludge system .
As the anaerobic process is commonly adopted in treating POME in most of the palm oil mills in Malaysia , biogas , which is a product of the anaerobic process , contributes to greenhouse gases ( GHG ) if discharged into the atmosphere . One cubic meter of POME generates 28 cubic meters of methane on average ( Andrew et al ., 2013 ) and will have a negative impact on the environment . Therefore , to mitigate this issue , the installation of a biogas plant is the best control measure to reduce biogas emission to the environment . A biogas plant consists of an anaerobic digester , a biogas treatment facility such as a biological scrubber to reduce hydrogen sulphide ( H 2
S ), a biogas gas engine power generator and a flare stack to burn excess biogas . The cost of running a palm oil mill is significantly reduced through the use of waste by-products as a sustainable source energy . Figure 10 shows the schematic diagram of a biogas power generation plant in a palm oil mill .
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