| 摘要 |
<p>An improved, compact biological sewage treatment plant comprised of a series of serially connected treatment tanks of arcuate shape when viewed in top plan view, joined operatively together essentially in an end-to-end circumferential ring-like manner, forming a central space adapted to house additional sludge dehydrating and auxiliary treatment apparatus and equipment for control and maintainance of the plant. A particular advantageous feature includes providing additional concentrically disposed series of said treatment tanks all operatively connected to provide for selectively expandable capacity as needed, with a minimum of adverse environmental impact on the surrounding populace.</p> |
