Читать книгу Clinical Guide to Fish Medicine - Группа авторов - Страница 116

Settleable particles have a relatively high specific gravity compared to the water they are in, so they tend to settle to the bottom. Suspended particles have a specific gravity the same as, or slightly higher than, the water they are in, so they tend to stay in suspension and will only drop out slowly. A settling or sedimentation tank is designed to minimize turbulence and allow suspended particles to settle out of the system water as it flows (Figure A3.5). They can then be removed by a bottom drain or by suctioning them off the bottom at regular intervals.