| Titre : |
Nutrient balance in aerobic biological treatment of tannery wastewater |
| Type de document : |
texte imprimé |
| Auteurs : |
Jianfei Zhou, Auteur ; Ya-Nan Wang, Auteur ; Wenhua Zhang, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 154-160 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Déchets -- Elimination
Eau -- Epuration -- Traitement biologique
Eaux usées -- Analyse
Tannage -- Déchets
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The effect of nutrient composition of tannery wastewater on aerobic biological treatment, particularly on the removal of ammonia nitrogen (NH3-N) and total nitrogen (TN) was investigated based on the theory of nutrient balance. During the biological treatment of conventional tannery wastewater, total organic carbon (TOC) and total phosphorus (TP) were almost exhausted. However, the removal of TN was unsatisfactory, suggesting that tannery wastewater contains excessive N source and insufficient C and P sources. When extra C and P sources were added together into the wastewater, the removals of NH3-N and TN increased significantly. Under the optimal ratio of TOC:TN:TP (10:1:0.2), the removals of NH3-N and TN were 100% and 80%, respectively, and the added C and P sources were almost consumed by activated sludge. This means that a good nutrient balance was achieved in this condition. Accordingly, when ammonium salts are replaced by organic acids and phosphates in the deliming and bating processes, it is reasonable to assume that the change of wastewater composition would favor the aerobic biological treatment of wastewater. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Procedures for aerobic biological wastewater treatment - Analytical methods - Aerobic biological treatment with the addition of C and P sources - Aerobic biological treatment with different C/N ratios - Aerobic biological treatment with different N/P ratios - Aerobic biological treatment using different P sources
- RESULTS AND DISCUSSION : Characteristics of raw tannery wastewater and activated sludge - Effect of addition of C and P sources on aerobic biological treatment - Effect of C/N ratio on aerobic biological treatment - Effect of N/P ratio on aerobic biological treatment - Effect of different P sources on aerobic biological treatment |
| En ligne : |
https://drive.google.com/file/d/1ZGQp-M93qeO35hs-KcFxBdLjNH-sSJ-g/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21287 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIX, N° 5 (05/2014) . - p. 154-160
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Nutrient balance in aerobic biological treatment of tannery wastewater in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 5 (05/2014)
