Treatment of effluents of poultryslaughterhouse with aluminum salts and natural polyelectrolytes

摘要

A mixture of aluminum salts and natural polyelectrolytes, extracted from the cactus Opuntia ficus indica, has been used for cheaning of wastewater from poultry slaughterhouse. The aggregation and setting properties of colloids and complex organics such as oil, grease, fats, proteins, and suspended solids, was increased if compared with conventional methods of wastewater treatment using only aluminum or iron sulfate. A mixture of aluminum salt in a concentration range of 300 to 600 mg l~-1 and natural polyelectrolytes of 0.6 to 0.8 mg l`-1 was used for flocculation and coagulation.