| Sahiplik | Değer |
| İsim | Output and Waste Water Characterization |
| Açıklama | Output and Waste Water Characterization of Slaughterhouse In slaughter house industry, water used in every process and about 16 m3 water used for 1 ton animal. It is often possible to make considerable reductions in polluting load by good housekkeping within the factory or by modifications to the process. In particular the separate recovery of blood and paunch contents can considerably reduce the BOD load. Waste waters from killing and butchering operations usually contain a high proportion of coarse suspended matter, whilst those from processing operations contain less suspended matter but considerable quantities of fat. In modern killing and processing plants the two streams are often kept separate for pretreatment. Protein Recovery:It has been good practice to coagulate blood and render recovered fat and screening to produce saleable by-products. In recent years attention has been given to the precipitation of colloidal or dissolved material which can then be processed for use as fertilizer or a protein supplement for animal feeds. Simple chemical treatment using alumino-ferric followed by settlement can give BOD removals of the order of 60 percent but the sludge produced is bulky, difficult to dry, and its inorganic content makes it unsuitable for animal feeds. More recently lignin sulphonic acid at a pH of approximately 3 has been used in conjunction with dissolved air flotation , a recovery of 65 to 90 percent of the protein material as a sludge containing 5 to 15 percent of dry solids is claimed. Removal of BOD is of the same order as the protein recovery. Provided that a market can be found for recovered protein this process could be economically attractive as a pretreatment method. If the by-product is not for use in animal feedstuffs then it is possible that an alternative chemical could be used which would not require such a low pH, and so enable the plant to be constructed from less expensive materials. Water Coming From Stockyar... |
| Dosya Adı | Bağlantı www.edubilim.com_endustri1-143-5.doc |
| Dosya Boyutu | Link |
| Dosya Tipi | doc (Mime Tipi: link) |
| Ekleyen | admin |
| Ekleme tarihi: | 15.10.2008 16:13 |
| İnceleyenler | Herkes |
| Kontrol Eden | Editor |
| İndirme sayısı | 0 İndirme sayısı |
| En son güncelleme | 14.10.2008 16:14 |
| Anasayfa | http://www.edubilim.com |
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