List primary treatments of slaughterhouse effluents and explain any two

Slaughterhouse effluents, also known as abattoir effluents, contain a variety of pollutants that need to be treated before being discharged into the environment. The primary treatments of slaughterhouse effluents typically involve physical, biological, and chemical processes to remove or reduce contaminants. Here are two primary treatments commonly used:

1. Screening and Sedimentation:

• Screening: The first step in treating slaughterhouse effluents is usually the removal of large solid materials through screening. This process involves passing the effluent through screens with specific mesh sizes to capture solid debris such as hair, bones, and other large particles.
• Sedimentation: After screening, the effluent is often subjected to sedimentation, a process that allows the heavier suspended solids to settle at the bottom of a tank or ______ ____ ______ _______ ____ __________ ________ _________ ___ _______ ____.
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