Growth patterns of Azolla pinnata R.Br. on artifical medium under in vitro and in vivo conditions
Abstract :
The common characteristic features of Confectionery industry wastewater are high concentration of soluble pollutants, high COD, BOD, TSS and acidic pH. The effluent treatment process in Confectionery industry, mainly depends on anaerobic digestion for maximum reduction of COD and BOD levels. The present investigation focuses on studying the biodegradation capacity of primary activated sludge and raw anaerobic sludge at different COD concentrations of effluent with the COD reduction efficiency. The anaerobic digestion is carried out in a laboratory scale batch reactor at varying COD concentrations for both the sludge types subsequently. The maximum COD reduction rate was obtained from the total effluent of COD concentration of 1512 mg/l, which on treatment with primary activated sludge and raw anaerobic sludge reduced to 586.7mg/l (61.2%) and 568.5 mg/l (62.4%) respectively. As the COD concentration in the effluent increased, the biodegradation rate started to slow down. Of the two sludges used for the anaerobic digestion of the effluent, it was observed that the raw anaerobic sludge gave a higher COD reduction than the primary activated sludge. To conclude, raw sludge used in anaerobic batch reactor set up gave the best COD reduction in this laboratory scale investigation.
Keywords:
BOD, COD, Biodegradation, Effluent
Citation: *,
( 2017), Growth patterns of Azolla pinnata R.Br. on artifical medium under in vitro and in vivo conditions. Scientific Transactions in Environment and Technovation, 9(4): 211-215
Correspondence: P.Lakshmi Priya and S.Catharin sara