| 摘要 |
<p>The invention relates to a self-draining septic tank intended for the mechanical-biological purification of domestic waste water. According to the invention, the septic tank consists of some receivers (1) whereinto waste water enters through an orifice (6), the receivers (1) having inside, at various levels, some horizontal or sloping pipes (2) passing through the walls of the receivers (1) and having orifices both inside and outside the receiver (1).</p> |
