| 摘要 |
<p>PCT No. PCT/SE80/00163 Sec. 371 Date Feb. 11, 1981 Sec. 102(e) Date Feb. 9, 1981 PCT Filed Jun. 10, 1980 PCT Pub. No. WO80/02855 PCT Pub. Date Dec. 24, 1980.In an inverted siphon (4) in a sewer (1, 1a) where the approaching flow of sewage is insufficient for producing self-rinsing, a fluid reservoir (5) is arranged upstream of the inverted siphon which has sufficient volume for effecting rinsing, and the fluid content of the reservoir intermittently by means of driving members (6, 8, 9) is emptied through the inverted siphon at a velocity which corresponds to and at least during a certain time exceeds the required rinsing velocity.</p> |
