Utilization of Waste Materials for Microbial Carrier in Wastewater Treatment

Table 1

Summary of experimental procedures.

Conditions	Reactor 1	Reactor 2
Carrier	Corncob	Concrete block
External carbon	No	Phase 1: no
		Phase 2: yes ()
		Phase 3: yes ()
Microbial test	Unused corncob	Unused concrete
	Used corncob (surface)	Used concrete (surface)
	Used corncob (core)	Used concrete (core)