An Experimental Study on Solidifying Municipal Sewage Sludge through Skeleton Building Using Cement and Coal Gangue

Table 1

Basic physical and chemical properties of sewage sludge.

Moisture content; (%)	Organic matter content; (%)	pH	Density; (10^3 kg/m^3)	Total nitrogen; (mg/g)	Total phosphorus; (mg/g)	Ammonia nitrogen; (mg/g)
220	45	6.8	1.08	13.2	1.69	10.3