Meat packing waste, including slaughterhouses, is high in which substance?

Meat packing waste, particularly from slaughterhouses, contains high levels of various contaminants, making it a significant concern in wastewater management. Among these contaminants, biochemical oxygen demand (BOD) is particularly important because it measures the amount of oxygen that bacteria will consume while decomposing organic matter in the water. High BOD levels indicate a high level of organic pollution, which is typical for waste produced in the meat packing process due to the large amounts of animal tissue, blood, and fat.

Additionally, suspended solids are also prevalent in meat packing waste. These solids can include pieces of animal matter, hair, and other debris, which not only contribute to the turbidity of water but also require significant treatment prior to discharge to ensure environmental compliance.

Nitrates may also be present, especially if the waste includes manure or if there is runoff from areas where fertilizers were used. However, the BOD and suspended solids are more directly associated with the treatment challenges posed by meat packing waste.

The presence of all these substances in significant amounts is why the correct answer encompasses the full range of contaminants, thereby indicating that meat packing waste is high in nitrates, suspended solids, and biochemical oxygen demand.