STM4663 Meat 2

What is the primary aim of secondary treatment in the wastewater treatment process of the meat industry?

• To reduce the BOD of the wastewater by using physical unit processes

• To add chemicals like ferrous sulphate and ferric chloride

• To remove the organic matter that remains after primary treatment

• To remove the suspended solids using DAF or sedimentation

Which chemical is used to remove the negative charge of colloidal dispersed protein and fat particles in the meat industry wastewater treatment process?

• Sodium carbonate

• Ferric sulphate

• Sulphuric acid

• Calcium carbonate

What is the final product of anaerobic digestion in the treatment of meat industry wastes?

• Nitrogen gas and oxygen

• Carbon monoxide and nitrogen

• Hydrogen and helium

• Methane and carbon dioxide

Which biological process is considered as the most economic and efficient means to nitrogen removal from meat wastewaters?

• Anaerobic digestion

• Aerobic digestion

• Nitrification

• Denitrification

What is the classification of solid waste in the meat/poultry industry?

• Type 1/Biodegradable waste and Type 2/Non-biodegradable waste

• Type A/Inorganic matter and Type B/Organic matter

• Type I/Vegetable matter and Type II/Animal matter

• Type X/Recyclable waste and Type Y/Non-recyclable waste

What is the recommended method for disposing of a dead animal in the meat/poultry industry?

• Burning the carcass in an incinerator

• Leaving the carcass in an open field for scavengers to consume

• Composting the deadstock on-farm and covering it with at least 60 centimetres of sawdust

• Throwing the carcass in a river or lake

What is the purpose of emergency disposal in the meat/poultry industry?

• To increase the production of meat and poultry

• To dispose of expired meat and poultry products

• To limit the spread of disease and prevent danger to the public or the environment

• To reduce the cost of waste management

Which country had to dispose of over 250,000 animals in 2001 due to a foot and mouth disease outbreak?

• United States

• Australia

• Germany

• Netherlands

What is the main advantage of anaerobic treatment over aerobic treatment in the meat industry?

• Lower cost

• Higher energy consumption

• Production of biogas

• Faster treatment process

What is the most common aerobic biological process used for the treatment of meat industry wastes?

• Aerated lagoons

• Activated sludge plants

• Waste stabilization ponds

• Biological filtration