| Titre : |
Alternative treatments for footwear industry liquid effluents - Part 1 - Classical approach |
| Type de document : |
texte imprimé |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 96-100 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Adsorption
Caractérisation
Charbon actif
Chaussures -- Industrie -- Aspect de l'environnement
Coagulation
Cuirs et peaux
Déchets industriels -- Elimination
Eaux usées -- Epuration
Eaux usées -- Recyclage
Floculation
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The footwear industry generates small volumes of non-biodegradable liquid effluents from finishing operations which have a high organic load, mainly due to pigments, organic acids and organic solvents. In consequence, these effluents must be treated to accomplish regulatory requirements before discharge. One of the treatment alternatives is coagulation/flocculation, a well-known treatment for removing fine particles and colloids. Tests carried out using lime, aluminum sulphate, ferric chloride and ferric sulphate as coagulants gave chemical oxygen demand (COD) and 5-day biochemica1 oxygen demand (BOD5) removals over 80-90 %. However, despite this efficiency, some of the effluent characteristics are still higher than those imposed for discharge to surface waters, land or sewage systems. A polishing step using activated carbon adsorption is then required to permit the discharge to sewage systems, but the quantities of adsorbent required casts some doubt on the feasibility of the process. |
| Note de contenu : |
- Characterisation of the effluents
- Coagulation/flocculation
- Activated carbon adsorption
- Table 1 : Characteristics of the effluents according to their residence time at the finishing system-
- Table 2 : Characteristics of the one-week-old sample B of effluent
- Table 3 : Jar tests with effluent sample B
- Table 4 : Selected conditions for coagulation/flocculation of A, B and C effluent samples
- Table 5 : Results of coagulation/flocculation on effluent A
- Table 6 : Results of coagulation/flocculation on effluent B
- Table 7 : Results of coagulation/flocculation on effluent C
- Table 8 : FeCl3 dose optimisation
- Table 9 : Results of coagulation/flocculation on effluent D
- Table 10 : Activated carbon treatment results |
| En ligne : |
https://drive.google.com/file/d/1_YusTO_2yqec69S27ZP60VA4rVk38bcV/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39922 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 86, N° 3 (05-06/2002) . - p. 96-100
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Alternative treatments for footwear industry liquid effluents - Part 1 - Classical approach in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 3 (05-06/2002)
