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Mechanisms of aggregation Sinkden

Last Updated March 29, 2024

Mechanisms of aggregation Sinkden

  1. Suspended matter (turbulent components) in raw water are usually repulsive and dispersed.
  2. When a flocculant is injected here, the flocculant sticks to the surface of the turbidity component, eliminating the repulsion of the turbidity component, and the turbid components form a lump. In addition, stirring and stacks collide and grow into a large lump (flock).
  3. The large flocs become heavy and makes it easier to sink.

Diagram of coagulation sedimentation

Experiment of aggregation and sinking experiment

State of coagulation sediment experiment, before adding a flocculant

①It's cloudy condition. I'll put a flocculant here.

Aggregation sinking experiment, after adding a flocculant and stirring

②After stirring with a flocculant, turbidity components stick together to form a lump (flock) is formed.

State of the coagulation sedimentation experiment, the lump (flock) grows larger and sinking

③The lump (flock) grows larger, becomes heavier and sinks.

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Water Works Bureau Water Purification Department Water Purification Section

Phone: 045-671-3544

Phone: 045-671-3544

Fax: 045-212-1158

Email address: su-josui@city.yokohama.jp

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