What is used to remove grease?

What is used to remove grease?

• A. Bar screens
• B. Biological treatment
• C. Chemicals
• D. All of the above

Answer: (C)

Fats, oils, and grease (FOG) are tricky to remove because they don’t mix with water and tend to cling to surfaces. Chemicals are used to condition FOG so they can separate from the water more easily. Coagulants and flocculants help fats and oils clump together into larger bits that can be skimmed off or removed in downstream equipment, and surfactants can aid in breaking emulsions to improve separation. Bar screens are meant for larger solids and don’t effectively remove grease, and while biological treatment can degrade some grease, it’s slower and not the direct, primary method for removing FOG at the point of treatment. That’s why chemicals are the most appropriate answer for removing grease.

Fats, oils, and grease (FOG) are tricky to remove because they don’t mix with water and tend to cling to surfaces. Chemicals are used to condition FOG so they can separate from the water more easily. Coagulants and flocculants help fats and oils clump together into larger bits that can be skimmed off or removed in downstream equipment, and surfactants can aid in breaking emulsions to improve separation. Bar screens are meant for larger solids and don’t effectively remove grease, and while biological treatment can degrade some grease, it’s slower and not the direct, primary method for removing FOG at the point of treatment. That’s why chemicals are the most appropriate answer for removing grease.