title: Feasibility studies: UV/chlorine advanced oxidation treatment for the removal of emerging contaminants.
abstract: UV/chlorine (UV/HOCl and UV/ClO(2)) Advanced Oxidation Processes (AOPs) were assessed with varying process layout and compared to the state of the art UV/H(2)O(2) AOP. The process comparison focused on the economical and energy saving potential of the UV/chlorine AOP. Therefore the experiments were performed at technical scale (250 L/h continuous flow reactor) and at process energies, oxidant and model contaminant concentrations expected in full scale reference plants. As model compounds the emerging contaminants (ECs): desethylatrazine, sulfamethoxazole, carbamazepine, diclofenac, benzotriazole, tolyltriazole, iopamidole and 17α-ethinylestradiol (EE2) were degraded at initial compound concentrations of 1 μg/L in tap water and matrixes with increased organic load (46 mg/L DOC). UV/chlorine AOP organic by-product forming potential was assessed for trihalomethanes (THMs) and N-Nitrosodimethylamine (NDMA). A process design was evaluated which can considerably reduce process costs, energy consumption and by-product generation from UV/HOCl AOPs.
authors: Siemens AG, Industry Sector, Industry Solutions Division, Water Technologies, Auf der Weide 10, 89312 Günzburg, Germany. cosima.sichel@siemens.com
authors: C
authors: C
authors: Sichel
authors: C
authors: C
authors: Garcia
authors: K
authors: K
authors: Andre
mesh_terms: D002713:Chlorine / Q000737:chemistry*; D003198:Computer Simulation; D060766:Drinking Water / Q000737:chemistry; D005240:Feasibility Studies; D008956:Models, Chemical; D016877:Oxidants / Q000737:chemistry; D010084:Oxidation-Reduction / Q000528:radiation effects; D013816:Thermodynamics; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D060766:Drinking Water; D016877:Oxidants; D014874:Water Pollutants, Chemical; D002713:Chlorine