298 94 307/02 Untersuchungen zum Stand der Umsetzung des ...

298 94 307/02 Untersuchungen zum Stand der Umsetzung des ... 298 94 307/02 Untersuchungen zum Stand der Umsetzung des ...

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03.12.2012 Aufrufe

Teil 3 Seite 2-8 Table 2-1: Overview of treatment methods for slaughterhouse wastewater Cleaning step Method Method variations Preliminary treatment Sieve units and rakes Wastewater treat- ment Fat separator Floatation units Equalisation units Storage and mixing tanks Biological part-treatment Biological wastewater treat- ment - Fixed sieves - Movable sieves - Fine filter rakes - Mechanical floatation - Relaxation floatation - Dispersion floatation - Aerobic activation method - Trickling filters with packed or hanging plastic filling elements - Anaerobic methods - Trickling filters and rotating disk units - Single-stage activation plants - Two-stage activation plants - Aerated lagoon plants - Anaerobic methods Apart from slaughtering by-products and slaughtering waste, one has to deal mainly with primary solids which are produced during the transport, the keeping in sheds, the cutting (for instance straw and manure, faeces and urine, contents from rumen, stomach, and bowels, etc.), and secondary solids produced during the wastewater and exhaust air treatment (for instance sieve and rake material, fats, floating matter). The primary residues are subdivided into the following lines: Green line: Lorry cleaning and sheds Red line: Slaughtering and cutting Yellow line: Evisceration and emptying of stomachs, bowels, and rumens The following diagram shows the produced emissions of to the single production areas and their possible treatment and utilisation methods.

Teil 3 Seite 2-9 Figure 2-3: Presentation of the production areas, of the liquid and solid residues, and their treatment and utilisation options

Teil 3 Seite 2-9<br />

Figure 2-3: Presentation of the production areas, of the liquid and solid residues, and their<br />

treatment and utilisation options

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