Authors: Chelme-Ayala, Pamela; Smith, Daniel W.; El-Din, Mohamed G.

Source: Canadian Journal of Civil Engineering, Volume 36, Number 6, June 2009 , pp. 1107-1119(13)

Publisher: NRC Research Press

Abstract:

Membrane processes have become a competitive option to conventional treatment technologies because of the high quality of the product water. In particular, nanofiltration and reverse osmosis have been found to remove materials like natural organic matter, disinfection by-products, and endocrine-disrupting compounds. However, an issue identified as one of the major drawbacks for the adoption of pressure-driven membrane processes is the need for additional treatment of the concentrate stream. Few studies dealing with membrane concentrate treatment have been published. The majority of the published studies address the disposal of concentrate into receiving waters bodies and sewer systems. In this review paper, the characteristics of membrane concentrate in terms of water quality and their impact on receiving water bodies are discussed. In addition, several approaches to the removal of pollutants and disposal options for membrane concentrates are examined.

Les procédés à membrane sont devenus une option compétitive aux technologies traditionnelles de traitement en raison de la grande qualité de l'eau produite. Plus particulièrement, la nanofiltration et l'osmose inverse ont éliminé des matériaux comme les matières organiques naturelles, les sous-produits de la désinfection et les perturbateurs endocriniens. Toutefois, l'un des problèmes identifié comme étant un inconvénient majeur à l'adoption des procédés de séparation par membrane est le besoin de traitement additionnel du débit concentrat. Peu d'études traitant du traitement de concentré par membrane ont été publiées. La plupart des études publiées traitaient de l'élimination du concentrat dans des plans d'eau récepteurs et les égouts. Dans cet article de synthèse, les caractéristiques du concentrat des membranes en termes de qualité de l'eau et son impact sur les plans d'eau récepteurs sont abordés. De plus, plusieurs approches d'élimination de polluants et options d'élimination des concentrés des membranes sont examinées.

Document Type: Research article

Publication date: 2009-06-01

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• Published since 1974, this monthly publication is the official journal of the Canadian Society for Civil Engineering. It contains articles on environmental engineering, hydrotechnical engineering, structure engineering, construction engineering, engineering mechanics, and engineering materials, and a history of civil engineering. Contributors include recognized researchers and practitioners in industry, government, and academe. New developments in engineering design and construction are also featured.
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