Slaughterhouses, Rendering facilities, and Abattoirs Effluents parameters to be treated

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Slaughterhouses, Rendering facilities, and Abattoirs Effluents parameters to be treated

Effluent from slaughterhouses, rendering facilities, and abattoirs is highly polluted and requires rigorous treatment before discharge or reuse. The wastewater typically contains a mix of organic matter, fats, oils, grease, and nutrients. Here are the key parameters that need to be treated:

🔬 Typical Effluent Parameters in Slaughterhouse/Rendering/Abattoir Wastewater

Parameter Typical Range (mg/L) Significance

BOD₅ (Biochemical Oxygen Demand) 1,500 – 8,000 High organic load, indicates oxygen demand.

COD (Chemical Oxygen Demand) 2,000 – 10,000 Total organic content, including non-biodegradables.

TSS (Total Suspended Solids) 800 – 3,000 Includes blood, tissue, and hair residues.

TDS (Total Dissolved Solids) 1,000 – 4,000 Includes salts, organics, and small particles.

Fats, Oils, and Grease (FOG) 100 – 1,000 Can cause clogging and interfere with treatment.

Nitrogen (Total Kjeldahl Nitrogen) 100 – 400 From proteins and urea in animal waste.

Ammonia (NH₃-N) 50 – 200 Toxic to aquatic life; needs nitrification.

Total Phosphorus 10 – 100 Contributes to eutrophication.

pH 6.5 – 8.5 May fluctuate due to cleaning chemicals.

Pathogens (E. coli, Salmonella, etc.) Variable Public health risk if untreated.

Odor-causing compounds Present (H₂S, VOCs, etc.) Nuisance, may require deodorization.

Heavy Metals (Fe, Zn, Cu) Low to moderate Depends on animal feed, equipment corrosion.

Chlorides 300 – 1,000 From washing, sanitizing processes.

Color and Turbidity High Due to blood, tissue, and fat content.