Etude de la contribution potentiel de la sédimentation sur le traitement aérobie du lisier de porc
| Autor: | J.W. Farrent, J. Martinez, C.H. Burton, R.W. Sneath |
|---|---|
| Přispěvatelé: | Production et économie agricoles (UR PERE), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), SILSOE RESEARCH INSTITUTE SILSOE GBR, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Irstea Publications, Migration |
| Jazyk: | angličtina |
| Rok vydání: | 1995 |
| Předmět: |
[SDE] Environmental Sciences
Suspended solids CEMAGREF Sedimentation (water treatment) Chemistry Chemical oxygen demand PERE Environmental engineering 04 agricultural and veterinary sciences 010501 environmental sciences Aquatic Science Pulp and paper industry 01 natural sciences 6. Clean water Settling [SDE]Environmental Sciences 040103 agronomy & agriculture Slurry 0401 agriculture forestry and fisheries Aerobic digestion Centrifugation Effluent 0105 earth and related environmental sciences |
| Zdroj: | Journal of Agricultural Engineering Research Journal of Agricultural Engineering Research, Elsevier-Academic Press;Elsevier, 1995, 61 (2), pp.87-96 AGENG 94 international conference on agricultural engineering, Milano, ITA, 29 th August-1st September 1994 AGENG 94 international conference on agricultural engineering, Milano, ITA, 29 th August-1st September 1994, 1994, Italy. pp.351-358 |
| ISSN: | 0021-8634 1095-9246 |
| Popis: | The technique of aeration can only partly treat pig slurry because of its limited effect on much of the undissolved matter present. A complete treatment process may then be expected to include a physical clarification step. A series of aeration trials followed by sedimentation were carried out. The main components affected were the suspended matter and the metals , copper, zinc and manganese. Column trials revealed that aerobic treatment did improve sedimentation but that solids concentration was a more significant factor. Continuous pilot scale sedimentation was satisfactorily demonstrated and performance compared well with batch sedimentation. A novel sedimentation factor was defined to aid the evaluation of sedimentation performance this combined the traditional separation efficiency with a correction factor to allow for the volume of sludge produced. Le travail présenté illustre à travers des essais en laboratoire et sur pilote le rôle de la séparation physique (sédimentation, centrifugation) sur les composés insolubles du lisier (Cu, Zn, Mn...) peu affectés par les traitements biologiques aérobics. La définition d'un nouveau facteur destiné à évaluer l'efficacité de la séparation est présentée. |
| Databáze: | OpenAIRE |
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