Sewage wastewater are categorized as domestic wastewater. In Malaysia, there are several method to treat sewage water with range from non-mechanized method until fully mechanized method.
Sewage characteristic normally determined by following parameter especially Biochemical Oxygen Demand(BOD) and Chemical Oxygen Demand(COD). As Sewage treatment plant operator in Malaysia, normal BOD value are ranging from 50mg/l to 250mg/l.
As the BOD is lower in most of local Malaysia is about (50mg/l to 100mg/l) likely due to Malaysian lifestyle.
1. Average Malaysian taking bath twice a day.
2. Water from kitchen connected to sewer
3. Due local season especially heavy rain and etc.
