Bioaugmentation with Mixed Hydrogen-Producing Acetogen Cultures Enhances Methane Production in Molasses Wastewater Treatment

Table 2

Correlation of specific dehydrogenase activity and COD removal.

	Related parameters	Measurement time of parameters
		48 h	96 h	270 h	360 h	500 h
QJ1	Specific dehydrogenase activity (μmol INT/g·min)	12.12	6.27	3.52	3.77	5.61
	COD removal (%)	40.90	7.87	7.08	5.51	10.24
	Correlation coefficients	0.9609
QJ2	Specific dehydrogenase activity (μmol INT/g·min)	16.16	7.36	5.13	4.86	5.73
	COD removal (%)	45.70	13.39	3.94	5.51	11.81
	Correlation coefficients	0.9924
QJ3	Specific dehydrogenase activity (μmol INT/g·min)	15.15	7.79	5.13	4.55	6.45
	COD removal (%)	39.40	19.69	4.72	5.51	14.17
	Correlation coefficients	0.9841
QJ4	Specific dehydrogenase activity (μmol INT/g·min)	22.22	9.52	6.16	5.83	7.00
	COD removal (%)	38.60	17.32	13.39	5.51	11.02
	Correlation coefficients	0.9776