What effect does activated silica have when used in proper dosage?

What effect does activated silica have when used in proper dosage?

• A. Increases sludge production
• B. Shortens coagulation time
• C. Reduces coagulant dosage needed
• D. Decreases settling rate

Answer: (C)

Activated silica, when used in the proper dosage, acts as a coagulant aid which results in a reduction of the coagulant dosage needed for effective water treatment. The presence of activated silica enhances the flocculation process by providing additional sites for particles to aggregate, leading to larger and more stable flocs. This can improve the overall efficiency of the coagulation process, allowing operators to use less of the primary coagulant while still achieving the desired removal of turbidity and other contaminants. The effective use of activated silica thus supports better water quality while also contributing to cost savings, as it reduces the amount of traditional coagulants required. This quality makes it particularly valuable in water treatment operations, where managing chemical dosages is crucial for both efficacy and cost control.

Activated silica, when used in the proper dosage, acts as a coagulant aid which results in a reduction of the coagulant dosage needed for effective water treatment. The presence of activated silica enhances the flocculation process by providing additional sites for particles to aggregate, leading to larger and more stable flocs. This can improve the overall efficiency of the coagulation process, allowing operators to use less of the primary coagulant while still achieving the desired removal of turbidity and other contaminants.

The effective use of activated silica thus supports better water quality while also contributing to cost savings, as it reduces the amount of traditional coagulants required. This quality makes it particularly valuable in water treatment operations, where managing chemical dosages is crucial for both efficacy and cost control.