A. Kumar et al., BIODEGRADABLE ORGANIC-MATTER IN INDUSTRIAL WASTE-WATERS AS DETERMINEDBY FORMULATED MICROBIAL MIXTURE, Journal of environmental biology, 19(1), 1998, pp. 67-72
The bacteria, Citrobacter, Klebsiella, Yersinia and Serratia were isol
ated from sewage and growth conditions were standarized for each bacte
rium. Microbial mixture was formulated by mixing equal concentration b
ased on optical density of each of the bacterium. The Chemical Oxygen
Demand (GOD) of industrial effluents was determined. The Biochemical O
xygen Demand (BOD) of industrial effluents was estimated by using the
formulated microbial mixture as a seeding material. Biodegradable frac
tion of organic matter (Fb) and BOD/COD ratio of industrial samples we
re determined. BOD/COD ratio and Fb indicate that these values are com
parable for both formulated microbial mixture as well as sewage. Based
on the above study, it can be concluded that sewage may be replaced b
y formulated microbial mixture for the determination of biodegradable
oranic matter.