Benefits of ozone-activated carbon filtration in integrated treatment processes, including membrane systems

Abstract

Research Article| September 01 2000 Benefits of ozone-activated carbon filtration in integrated treatment processes, including membrane systems J. P. van der Hoek; J. P. van der Hoek 1Vogelenzangseweg 21, 2114 BA Vogelenzang, The Netherlands Tel: +31 23 523 35 73 Fax: +31 23 528 14 60; E-mail: j.p.van.der.hoek@gwa.nl Search for other works by this author on: This Site PubMed Google Scholar J. A. M. H. Hofman; J. A. M. H. Hofman 2Amsterdam Water Supply, Vogelenzangseweg 21, 2114 BA Vogelenzang, The Netherlands Search for other works by this author on: This Site PubMed Google Scholar A. Graveland A. Graveland 2Amsterdam Water Supply, Vogelenzangseweg 21, 2114 BA Vogelenzang, The Netherlands Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2000) 49 (6): 341–356. https://doi.org/10.2166/aqua.2000.0029 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search nav search search input Search input auto suggest search filter All ContentAll JournalsThis Journal Search Advanced Search Citation J. P. van der Hoek, J. A. M. H. Hofman, A. Graveland; Benefits of ozone-activated carbon filtration in integrated treatment processes, including membrane systems. Journal of Water Supply: Research and Technology-Aqua 1 September 2000; 49 (6): 341–356. doi: https://doi.org/10.2166/aqua.2000.0029 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Amsterdam Water Supply introduced ozone-activated carbon filtration (biological activated carbon filtration) in the production plant Leiduin in 1995. This full-scale plant (capacity 70 million m3 yr−1) can be characterized as an integrated treatment process. Experience since 1995 has revealed that biological activated carbon filtration has several benefits in integrated treatment processes.It is a very effective barrier for organics in general and for pesticides and organic micropollutants in particular. Due to the preceding ozonation both adsorption and biodegradation take place, resulting in a very long lifetime of the carbon filters (2 years). The ozonation significantly increases the disinfection capacity of the plant. Together with the other process steps, the disinfection capacity is at such a high level that, in combination with the biological stability of the finished water and good engineering practice in the distribution system, no chlorination has to be applied to guarantee hygienic quality. The process stability of the final treatment step, slow sand filtration, is, importantly, increased by the introduction of ozone-activated carbon filtration. Running times of the slow sand filters are longer than 2–3 years, while before the introduction of ozone-activated carbon filtration they never exceeded 1 year.In integrated membrane processes—which may be used in the treatment plant Leiduin in the future and therefore are being tested on pilot plant scale—ozone-activated carbon filtration also offers many advantages. In a reverse osmosis pretreatment scheme, comprising ozone-activated carbon filtration and slow sand filtration, the reverse osmosis system was shown to have a running time of 1 year without any membrane cleaning, due to the excellent reverse osmosis feed water quality. The application of ozone-activated carbon filtration also enables the use of electrodialysis as an alternative for reverse osmosis in an integrated membrane system.It is concluded that ozone-activated carbon filtration is a versatile process, offering many benefits in integrated treatment systems. biological activated carbon filtration, disinfection, integrated treatment, membranes, organics, ozonation This content is only available as a PDF. © IWA Publishing 2000 You do not currently have access to this content.