| 摘要 |
<p><PICT:0941857/C1/1> The bottom of a sewage treatment tank is covered by aeration plates to which are supplied with air, via channel h and conduit i, which escapes through holes e and f into the tube d to give an effective aeration rate. The tubes may be made of a plastic material and may be detachable. An activated sludge process which can be used with the aeration device by means of baffles and flaps which divide the tank into treatment zones is illustrated in Figs. 4 and 5 (not shown).</p> |
