Treatment scale

1200 t/day

Treatment level

BOD

(mg/L)

COD

(mg/L)

Cyanides (mg/L)

Phenol

(mg/L)

Petroleum

(mg/L)

pH

Sulfide

(mg/L)

Before treatment

400

1067

28.6

245.3

16.8

6-8

40.5

After treatment

60

250

0.5

0.5

5.0

6-9

1.0

Investment

Total investment: 2.19 million Yuan; average investment: 1825Yuan/t water day

Operation cost

0.92 Yuan/t water

Operation time

Prize winning

Combined bioreactor applying in coking wastewater treatment

Dalian technology committee examination

Combined bioreactor achieved international advanced level

National environment protection agency significant technology reward

Liaoning province Shihua office technology progress reward (1999)