Chlorine Strength for Abattoir Sanitation

The strength of chlorine required for sanitation of abattoir plant is in the range of:

Correct Answer: 130–250 ppm

The recommended chlorine concentration for sanitation of an abattoir plant is 130–250 ppm (parts per million).

Sanitation Systems in Abattoir

• Central Cleaning System (CCS): Generally used in abattoirs and meat processing plants.
• Cleaning-in-Place (CIP): Generally used in the dairy industry.
• Self-Contained Cleaning (SCC) system: Another automated cleaning system.

Chlorine as a Sanitizer

• Chlorine (as sodium hypochlorite or bleaching powder solution) is the most widely used chemical sanitizer.
• Too low a concentration is ineffective; too high causes equipment corrosion and meat taint.
• 130–250 ppm represents the effective bactericidal range for surface sanitation in meat facilities.

Effluent Treatment

• Average BOD of abattoir effluent: 1500–2000 mg/litre.
• Primary treatment reduces BOD by 75–80%.
• Biological filters reduce BOD by 95%.