Determination of kinetic constants of hybrid textile wastewater treatment system.
The present study is related to treatment of textile wastewater in microaerophilic-aerobic hybrid reactor. The study showed the effectiveness of biological treatment of wastewater involving appropriate microorganism and suitable reactors. COD and color were reduced to 82-94%, and 99% respectively for textile wastewater. The reactor was operated at highest loading of 16.4 g COD g l(-1)d(-1) and obtained 80% COD and 72% color removal. Biokinetic models were applied to data obtained from experimental studies in continuously operated hybrid reactor. Treatment efficiencies of the reactor were investigated at different hydraulic retention times (2.3-9.1d) and organic loading rates (2.6-16.4 g COD l(-1)d(-1)). Second-order and a Stover-Kincannon models were best fitted to the hybrid column reactor. The second-order substrate removal rate constant (k(2(S))) was found as 41.44 d(-1) for hybrid reactor. Applying the modified Stover-Kincannon model to the hybrid reactor, the maximum removal rate constant (U(max)) and saturation value constant (K(B)) were found to be 212 g l(-1)d(-1) and 22.89 g l(-1)d(-1), respectively.
Sandhya
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S
National Environmental Engineering Research Institute, CSIR-Complex, Chennai 600113, India. sswami_in@yahoo.com
Sarayu
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K
Swaminathan
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K
D000332:Aerobiosis; D000693:Anaerobiosis; D019149:Bioreactors; D007194:India; D007700:Kinetics; D008954:Models, Biological; D012722:Sewage; D013783:Textile Industry; D013784:Textiles; D014865:Waste Disposal, Fluid / Q000379:methods*; D018505:Waste Management / Q000379:methods
D012722:Sewage