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Teil 3 Seite 3-3
Table 3-2: Amount and composition of the liquid residues in slaughterhouses
Substrate name Amount
per cattle
per hen
a: per pig
b:
c:
Rinsing and washing water ca. 100 l per delivery lorry
(3 min cleaning time, compressed air
cleaner ca. 0,5 l/s
Disinfection baths and No data available
lorry tire washing
Slaughtering water
Evisceration wastewater
For bowels cutting and without fat
separator
Condition
10 - 20 g/l BOD
a: 100 - 300 l 2.000 - 8.000 mg/l COD
1.000 - 4.000 mg/l BOD5
150 - 500 mg/l Ntotal
15 - 50 mg/l P total
500 - 2.500 mg/l Fat (H17)
20 - 100 µg/l AOX
10 - 60 ml/l settable
solids
b: 500 - 1.000 l
1.500 - 3.250 mg/l BOD 5
c: ca. 25 l/hen 2.200 - 4.000 mg/l COD
1.000 - 2.500 mg/l BOD5
300 - 1.200 mg/l Fat
150 - 350 mg/l Ntotal
5 - 30 mg/l Ptotal
a + b:
1.300 - 3.000 mg/l COD
ca. 50 l/Bowels
500 - 2.000 mg/l BOD5
and SE (Slaughtering unit) all values 60 - 200 mg/l TKN
after fat separation
250 - 800 mg/l Fat
20 - 50 µg/l AOX
12 - 40 ml/l settleable
solids
10 - 22 g/l COD
70 - 130 ml/l settable
solids
The data given in reference literature about the specific wastewater amounts and pollut-
ant loads from the area of meat production can mostly only be used as orientation help,
due to the considerable variation range. They are the more usable, the more exact struc-
ture and production conditions of the examined companies have been documented and
communicated.
As becomes apparent from a comparative analysis of different reference literature data
on the specific wastewater production, for the slaughter of cattle as a rule between 500
and 1.000 l per animal must be assumed. In exceptional cases, however, there can result
considerably higher values (up to 4.000 l). Furthermore, it becomes evident that for
slaughtering including bowel processing the specific wastewater amounts are higher than
in slaughterhouses where no bowel processing is done. For pig slaughtering, the specific
wastewater amounts vary from 100 to 300 l/animal, with extreme variations towards the
upper end (up to 600 l). Here as well the specific wastewater amount is increased if the
slaughtering includes bowel processing.
In the following table, the specific wastewater amounts and pollutant loads are given
which can be assumed for single production areas of the meat production for cases where
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