| Titre : |
Enter the root-zone : green technology for the leather manufacturer |
| Type de document : |
texte imprimé |
| Auteurs : |
Richard Daniels, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 63-67 |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Eau -- Epuration -- Traitement biologique
Eaux usées -- Décontamination
Eaux usées -- Epuration
PhytoépurationLa phytoépuration est au sens large l'épuration par les plantes. Celles-ci peuvent contribuer à épurer ou dépolluer les trois grands milieux que sont l'air, les sols et l'eau. Il s'agit d'un système de traitement des eaux utilisant des plantes (généralement plantes macrophytes), des substrats et des microorganismes au sein d'une zone humide artificielle (ou "constructed wetlands" pour les anglophones). Les systèmes de phytoépuration peuvent être composés d'un ou plusieurs filtres plantés.
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Enhanced Root-zone systems offer the first serious alternative to the conventional biological of tannery effluents. With capital and running costs a fraction of the demanding activated sludge process, the simplicity and elegance of this technology has been demonstrated in both equatorial and temperate regions. With performance and area needs in line with yesterday's intrusive technology, these robust green systems offer a real alternative. There are also other industrial opportunities. |
| Note de contenu : |
- Enhanced root-zones: the technology
- Section 1 : What are root-zone systems
- Section 2 : Systems set up in various tanneries
- Section 3 : General root-zone performance
- Section 4 : Special properties
- Section 5 : Optimising performance
- Fig. 1 : Root-zone schematic
- Fig. 2 : Multi-stage systems. Reed beds are better managed with several beds operating in series. This multi-stage polishing plant for domestic effluent uses gravity flow
- Fig. 3 : Complex root structure. The root structure of reeds is heavily interlinked. They provide a robust structure capable of surviving in very hostile conditions.
- Fig. 4 : Workshop studies. The viability of different reed species was assessed using chemicals typically used in manufacture. Tannery effluents were then investigated using the preferred reed species and configuration.
- Fig. 5 : Complex molecules. Root- zones hosts microbial colonies capable of breaking a vast range of complex molecules. Treatment provides a 90% reduction in strength of a polyphenol (mimosa solution) from a strength of COD 3,000 mg/l
- Fig. 6 : High salinity resistance. Typical selection from 300 plants subjected to increasing levels of salinity as mg/l. Reeds are healthy at far higher salinity values than typical of tannery effluents. These findings were subsequently supported by the growth of reeds in tannery effluent where the salinity is unusually high 10,000 mg/l |
| En ligne : |
https://drive.google.com/file/d/1KYJAmOi1O_VWO3qM3i7km7InzCt7wonA/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32160 |
in WORLD LEATHER > Vol. 14, N° 4 (06-07/2001) . - p. 63-67
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Enter the root-zone : green technology for the leather manufacturer in WORLD LEATHER, Vol. 14, N° 4 (06-07/2001)
