FIGURE 1.
COD (A) and TN (B) concentration in the influents (dashed lines) and in the effluents (solid lines).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.