Contaminant

Typical entry value

Typical effluent value

Dairy cows

Pigs

Discharge for municipal wastewater

(China, Class 1 Stand A)

Discharge for livestock and poultry breeding

(China, GB18596-2001)

BOD₅

15000mg/L

4000mg/L

< 10 mg/L

<150 mg/L

COD

30000mg/L

8000mg/L

< 50 mg/L

<400 mg/L

NH3-N

3000 mg/L

2180mg/L

< 5(8) mg/L

<80 mg/L

SS

30000 mg/L

5000mg/L

< 10 mg/L

<200 mg/L