| Titre : |
Efficient removal of total nitrogen from tannery wastewater by promoting denitrification with sodium acetate |
| Type de document : |
texte imprimé |
| Auteurs : |
Ma Xiaojian, Auteur ; Zhou Jianfei, Auteur ; Zeng Yunhang, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 323-327 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Acétate de sodium
Chlorures
Dénitrification
Eaux usées -- Analyse
Eaux usées -- Epuration
Eaux usées -- Teneur en azote total
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Total nitrogen (TN) in tannery wastewater is difficult to remove completely, because the low C/N ratio of the wastewater leads to inadequate denitrification. Sodium acetate was used as an extra carbon source to improve the denitrification efficiency and the TN removal. The appropriate COD/TN ratio for denitrification using sodium acetate was 5.1, at which the TN concentration of tannery wastewater decreased by 95%. A much faster removal of TN was obtained by adding sodium acetate in denitrification than by adding common glucose. These results showed that sodium acetate was a high-quality carbon source for a complete and rapid denitrification of tannery wastewater. The denitrification efficiency decreased with decreasing temperature and increasing chloride concentration. However, when the carbon source was made sufficient by adding sodium acetate, complete denitrification was stil) obtained even at 15°C or 10000mg/L of chloride concentration. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Effect of temperature on anaerobic denitrification of wastewater - Effect of chloride concentration on anaerobic denitrification of wastewater - Analytical methods of pollution loads in wastewater
- RESULTS AND DISCUSSION : Effect of addition of sodium acetate on anaerobic denitrification of tannery wastewater - Effect of temperature on anaerobic denitrification of tannery wastewater - Effect of chloride concentration on anaerobic denitrification of tannery wastewater |
| En ligne : |
https://drive.google.com/file/d/1FUylPZ3JvBdPyCNZe4mIZkDmr_wPe0I3/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33211 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 6 (11-12/2019) . - p. 323-327
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Efficient removal of total nitrogen from tannery wastewater by promoting denitrification with sodium acetate in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 6 (11-12/2019)
