Table 1 Characteristics of sewage and treated sewage effluent (TSE).

From: Characterization of nanoplastics and small-sized microplastics in sewage treatment

 

Sewage

Treated sewage effluent (TSE)

Chemical oxygen demand (COD)

200–340

30–60

Biological oxygen demand5 (BOD5)

70–160

 < 30

Ammonium-N

46–54

 < 0.1

Nitrate- N

0.2–0.8

21–28

Total nitrogen (TN)

47–56

22–31

Phosphate-P

4–5.5

4.1–4.4

  1. All parameters are expressed in mg/L.