摘要 |
<p>1. Prevention of deposits and incrustations susceptible to block proper operation of equipment for aeration of water or other liquids, in which gas or air is blown into the flow of liquid as the latter passes across a porous bottom, or bottom provided with holes, of a vessel, characterized in that there is applied to that bottom a fill of setteable bodies of any shape, however, suitable size, such as gravel or granulate.</p> |