Dairy Industry Wastewater Quiz

What are the main sources of wastewater in the dairy industry?

• Milk receiving tank washing

• Cheese production

• Butter washing

• All of the above

What are the characteristics of dairy wastewater?

• High BOD and COD

• Low nitrogen concentrations

• Low suspended oil and/or grease contents

• Neutral pH

What are the pollutants present in dairy industry wastewater?

• Suspended and dissolved solids

• High sulfate content

• Low chemical oxygen demand

• Low biological oxygen demand

What is the color and odor of dairy wastewater?

• Clear with no odor

• White with an unpleasant odor

• Green with a floral fragrance

• Yellow with a sweet scent

What are the characteristics of dairy sludge?

• Low casein decomposition

• High heavy metal content

• Low decomposable carbon

• Strong butyric acid odor

What is the nature of dairy wastes when released?

• Basic

• Acidic

• Alkaline

• Neutral

What contributes to the high biological oxygen demand in dairy wastewater?

• Low casein content

• High lactose concentration

• High sodium content

• Low lipid concentration

What is the main problem caused by dairy wastewater disposal?

• High treatment taxes

• No pollution caused

• Low treatment taxes

• No sludge disposal problem

What is the main advantage of utilizing dairy waste in the production of glycerine and biodiesel?

• Increase in water pollution

• Control of water pollution and energy recovery

• Decrease in organic matter conversion

• Decrease in energy recovery

What is the potential effect of wastewater discharged to land on groundwater?

• It can improve the quality of groundwater

• It can adversely affect the quality of groundwater

• It can reduce the salinity of groundwater

• It has no impact on groundwater