Research on Dewatering Ability of Municipal Sludge under the Treatment of Coupled Acid and Microwave

Table 1

Characteristic of sludge sample.

Items	Specific gravity	Water content; (%)	Bulk density; (g/cm^3)	Organic content	Permeability coefficient; (10^-7 cm/s)	Void ratio
Sludge sample	1.92	87%	1.01	49.3%	7.13	9.55

Represents the water mass divided by the sludge mass.