| 摘要 |
PCT No. PCT/DE94/00920 Sec. 371 Date Jun. 6, 1996 Sec. 102(e) Date Jun. 6, 1996 PCT Filed Aug. 10, 1994 PCT Pub. No. WO96/05379 PCT Pub. Date Feb. 22, 1996A tank system includes a tank, a rainwater feed mechanism and a run-off for contaminated water. The rainwater feed mechanism includes a switch unit that passes contaminated water to the run-off. When large quantities of rainwater are received, the switch unit passes the rainwater to the tank.
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