Comparison between Thermo-Alkaline and Electro-Fenton Disintegration Effect on Waste Activated Sludge Anaerobic Digestion

Table 1

Characteristics of waste activated sludge before and after thermo-alkaline (TA) and electro-Fenton (EF) pretreatments.

Parameters (g/L)	Raw	TA pretreated	EF pretreated
pH	6.95 ± 0.2	9.7 ± 0.5	7.57 ± 0.12
TS	18.64 ± 1.6	16.17 ± 5.9	12.48 ± 6.31
VS	10.84 ± 1.3	11.23 ± 1.38	9.15 ± 4.75
TSS	14.67 ± 1.6	14.15 ± 0.17	11.32 ± 0.08
VSS	9.5 ± 1.3	5.23 ± 0.05	2.85 ± 0.74
Total COD	18.10 ± 2	16.86 ± 0.27	14.5 ± 4.71
Soluble COD	1.2 ± 0.5	3.3 ± 0.65	4.1 ± 1.4
NTK	1.91 ± 1	1.98 ± 0.38	2.61 ± 0.86
COD/NTK	9.45	5.83	3.83
VSS/VS	0.87	0.47	0.31