Slaughter house in Kafr Al Arbeen-Kalubia was chosen for this study, as a pattern of modern big poultry processing factories.
The aims of this study were: firstly, evaluation of the chemical and biochemical characteristics for the effluent from the poultry processing factories, secondly, studying the optimum treatment method for safe disposal of this industrial wastes.
This first part of the work defines the chemical and biochemical qualities of these effluents, through an expanded set of practical selected parameters:
pH Value: According to different samples, a nearly similar mean value lies between 7.07 and 7.72, while the optimum PH range in a biological system lies between 6.5 and 8.5.
Total Solids: The highest value of TS is 2950 mg/L, while the lowest value is 400 mg/L and the mean value is 1372 mg/L.
Suspended Solids: The highest value of SS is 1350 mg/L the lowest value is 150 mg/L, while the mean is 665 mg/L. The suspended solids and the percentage of total solids range between 25–74.
Dissolved Solids: The maximum value of DS is 1600 mg/L and the minimum value is 230 mg/L, while the mean value is 707 mg/L.
Volatile Solids: The percentage of volatile solids to the total solids ranged from 50-70, while the highest value of VS was 2060 mg/L and the lowest value was 250 mg/L.
Fixed Solids: Given data reveal that the values of these solids parallel, in their magnitude, the same sequence of TS. No limits for these solids are prescribed in local standards.
Grease: The highest value of grease is 410 mg/L, the lowest value is 35 mg/L, while the mean value is 214 mg/L. All samples consider contradiction to the regulations for industrial wastes.
Oxygen Demands (BOD & COD): The highest value of BOD was 1570 mg/L, while the lowest was 240 mg/L. The same case also appeared in COD and even the sequence of averages magnitude was exactly the same, when the two criteria were concerned. Yet, the values of COD were always extremely higher than BOD. With the exception of one sample, all samples gave values of BOD/COD higher than 0.6. It was obvious that the obtained values of oxygen demands were as tremendous as to be incomparable with the tightening levels of local regulations.
Total Nitrogen: Given data reveal that the highest value of total nitrogen is 86 mg/L, the lowest value is 12 mg/L, while the mean value is 44.3 mg/L.
Total Phosphorus: The highest value of total phosphorus is 16 mg/L, while the lowest value is 2.8 mg/L and the mean value is 9.04 mg/L.
The ratio between organic parameter BOD, nitrogen, phosphorus ranges 82.2 : 4.89 : 1 to 106.5 : 5.83 : 1. |
