Abstract:
Dairy industry is one of the major industries causing water pollution. It generates
about 0.2–10 liters of effluent per liter of processed milk with an average generation
of about 2.5 liters of wastewater per liter of the milk processed Poorly treated
wastewater with high levels of pollutants caused by poor design, operation or
treatment systems creates major environmental problems when discharged to surface
water or land. Considering the above stated implications an attempt has been made in
the present research to evaluate the wastewater treatment systems used in dairy
industry in the country therefore three famous factories were chosen as a case studies.
Samples were collected and the parameters analyzed for evaluation of effectiveness of
treatment systems are COD, BOD, TSS, TDS, PH, oil and grease. The results
obtained show that the biological oxygen demand and the chemical oxygen demand
for the three factories (A, B, C) were 810, 2500, 534 and 15200, 18000, 1280
respectively.and they were above the maximum limits of the Sudanese industrial
wastewater standards, except the total suspended solids (TSS), and the PH. The study
concluded that the dairy wastewater became an ever-increasing concern and the
treatment strategies and efficient and cost-effective wastewater treatment technology
is critical and more stringent environmental legislation is required
