Treatment scale

Crude oil ballast water: 3600 t/day

Oil product ballast water: 1200 t/day

Treatment level

BOD (mg/L)

COD (mg/L)

Petroleum (mg/L)

Before treatment

500

1000

2000-3000

After treatment

60

150

﹤5

Investment

Total investment: 12 million Yuan;

average investment: 2500 Yuan/t water day

Operation cost

0.3 Yuan/ t water