2015

2016

2017

COD eliminated

2.47 (kg × 10⁻¹)^a

13.00 (kg × 10⁹)^b

13.77 (kg × 10⁹)^c

Sludge production (DS)

1.70 (kg × 10⁻¹)d

8.00 (kg × 10⁹)^e

10.53 (kg × 10⁹)^f

Sludge production (DS)/COD eliminated, kg sludge/kg COD eliminated

0.69

0.62

0.77