Abstract:
The objective of this study is to determine the pollution loads (both hydraulic and organic) emanating from the factories under the study (food processing factories). Field observation, interviews of the concerned personnel, and laboratories analysis as study tools. The determined loads are relatively high (hydraulic load, organic load) for each of the two factories and don’t agree with the recommended Khartoum north local order (1970) and SSMO (173/2008) standards. The results of samples analyzed for CAPO factory: were:
pH =6.89, TSS = 1000 mg/l, BOD = 4500 mg/l ,COD = 5650 mg/l and oil and grease = 150.100 mg/l. Wastewater flow = 5000 m3/day.
Results for EL mosharf factory: were:
pH = 6.55, BOD = 5516 mg/l, COD = 6825 mg/l, TSS = 350 mg/l.
Wastewater flow = 74 m3/day.
Neither of the two factories is having pretreatment facilities in spite of the need for it.
There is neither inspection nor flow measurement by KSSC for quantity and composition of the industrial wastewater generated.
It is recommended to install pretreatment facilities for the factories industrial wastewater in this plant, so as to be in line with the regulations
The proposed pretreatment unit designed for CAPO Plant as follows:
Q design = 208.33 m3/d, BOD design load = 124 kg/d, design TSS load= 144 kg/d.
Volume of lift station = 1000 m3, manual bar screen length =1.2m, width = 0.5 m, height = 0.5 m.
Volume of aeration tank = 6944.44m3.
