title: A membrane-integrated advanced scheme for treatment of industrial wastewater: dynamic modeling towards scale up.
abstract: Modeling and simulation was carried out for an advanced membrane-integrated hybrid treatment process that ensures reuse of water with conversion and recovery of ammoniacal nitrogen as value-added struvite fertilizer from coke wastewater. While toxic cyanide was largely removed in a pre-chemical treatment unit using Fenton's reagents under optimized conditions, more than 95% of NH4(+)-N could be recovered as a valuable by-product called struvite through addition of appropriate doses of magnesium and phosphate salts. Water could be turned reusable through a polishing treatment by nanofiltration membranes in a largely fouling free membrane module following a biodegradation step. Mathematical modeling of such an integrated process was done with Haldane-Andrew approach for the associated microbial degradation of phenol by Pseudomonas putida. Residual NH4(+) was degraded by nitrification and denitrification following the modified Monod kinetics. The model could successfully predict the plant performance as reflected in reasonably low relative error (0.03-0.18) and high Willmott d-index (>0.98).
authors.affiliation: Environment and Membrane Technology laboratory, Department of Chemical Engineering, National Institute of Technology, Durgapur 713 209, India.
authors.forename: Ramesh
authors.initials: R
authors.lastname: Kumar
authors.forename: Parimal
authors.initials: P
authors.lastname: Pal
mesh_terms: D001673:Biodegradation, Environmental; D011232:Chemical Precipitation; D004868:Equipment Failure; D006861:Hydrogen Peroxide / Q000737:chemistry; D007220:Industrial Waste / Q000032:analysis*; D007501:Iron / Q000737:chemistry; D017616:Magnesium Compounds / Q000737:chemistry; D008954:Models, Biological; D008956:Models, Chemical; D010710:Phosphates / Q000737:chemistry; D016958:Pseudomonas putida / Q000378:metabolism; D000069877:Struvite; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods; D062065:Wastewater / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification* / Q000378:metabolism
chemical_list: D006861:Hydrogen Peroxide; D007220:Industrial Waste; D007501:Iron; D017616:Magnesium Compounds; D010710:Phosphates; D000069877:Struvite; D062065:Wastewater; D014874:Water Pollutants, Chemical; C045076:Fenton's reagent
keywords: Advanced process; Aquatic environment; Mathematical modeling; Wastewater treatment