From: Effect of carbon-to-nitrogen ratio on high-rate nitrate removal in an upflow sludge blanket reactor for polluted raw water pre-treatment application
Operating phase
UP1
UP2
Days
1–6
7–34
C/N (g C g−1 N)
3
2
DOC (mg L−1)
120
80
NO3−-N (mg L− 1)
40