Bioremediation of Agro-Based Pulp Mill Effluent by Microbial Consortium Comprising Autochthonous Bacteria

Table 4

Percentage reduction in COD values of different optimized parameters for Mill A and Mill B.

Parameters	Percentage reduction in COD after 20 hrs of incubation
	Back water		Back water : black liquor
	Mill A	Mill B	Mill A	Mill B
pH (6.8)	86.5	78.7	66	61
Temperature (35°C)	85	78	64	61.5
Agitation (200 rpm)	86.25	77	65	60
Nitrogen + Phosphorus	86.5	73.75	63	62
Ratio (80 : 20); Back water : black water			62.1	60.75