Reduction of haloacetic acids in natural surface water by integrated treatment: coagulation and membrane processes

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Title: Reduction of haloacetic acids in natural surface water by integrated treatment: coagulation and membrane processes
Authors: Sentana Gadea, Irene | Benraouane, Ouafa | Ait-Amar, Hamid | Varó Galvañ, Pedro José | Boluda Botella, Nuria | Trapote, Arturo | Prats, Daniel
Research Group/s: Diseño en Ingeniería y Desarrollo Tecnológico (DIDET) | Recursos Hídricos y Desarrollo Sostenible | Equilibrio entre Fases | Ingeniería Hidráulica y Ambiental (INGHA)
Center, Department or Service: Universidad de Alicante. Departamento de Expresión Gráfica, Composición y Proyectos | Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Departamento de Ingeniería Civil | Universidad de Alicante. Instituto Universitario del Agua y las Ciencias Ambientales
Keywords: Nanofiltration membrane | Ultrafiltration membrane | Haloacetic acids | DBP | Coagulant
Knowledge Area: Expresión Gráfica en la Ingeniería | Ingeniería Química | Ingeniería Hidráulica
Issue Date: Feb-2017
Publisher: Desalination Publications
Citation: Desalination and Water Treatment. 2017, 63: 24-33. doi:10.5004/dwt.2017.20193
Abstract: The objectives of this research were to study the elimination of dissolved organic carbon (DOC) and the reduction in the formation of haloacetic acid potential (HAAFP) when natural water from La Pedrera reservoir was treated with a single process of coagulation or filtration membrane, and a combined process (coagulation followed by treatment with membranes). In this research two coagulants, aluminium sulfate and polyaluminium chloride, and four membranes, two nanofiltration membranes (NF 90 and DESAL HL) and two ultrafiltration membranes (PES 5000 and PES 10000) were studied. The highest reduction in DOC was obtained when the natural water underwent the combined treatment of coagulation followed by NF90 membrane filtration. With this combined treatment the values of DOC rejection were over 82% independently of the coagulant used. For the single treatment with nanofiltration membranes, HAAFP rejection was 81% for NF 90 and 76% for Desal HL. However, a single treatment with coagulation or ultrafiltration membranes showed results for HAAFP rejection of under 35% and 26%, respectively. When a combined treatment of aluminium sulfate followed by ultrafiltration with the PES 5000 membrane was used, HAAFP rejection reached values of 80% approximately. These values are very similar to the results obtained from a single treatment with NF 90 but with the advantage that the flux of PES 5000 is 4,000 times the flux of the NF 90 membrane. Therefore, this treatment should be given due consideration.
ISSN: 1944-3994 (Print) | 1944-3986 (Online)
DOI: 10.5004/dwt.2017.20193
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2017 Desalination Publications
Peer Review: si
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Appears in Collections:INV - DIDET - Artículos de Revistas
INV - Recursos Hídricos y Desarrollo Sostenible - Artículos de Revistas
INV - EQF - Artículos de Revistas
INV - IngHA - Artículos de Revistas

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