| 摘要 |
PCT No. PCT/EP93/01707 Sec. 371 Date Apr. 11, 1995 Sec. 102(e) Date Apr. 11, 1995 PCT Filed Jul. 2, 1993 PCT Pub. No. WO94/01368 PCT Pub. Date Jan. 20, 1994A process for purifying waste water form a vehicle washing installation and returning the purified water to the installation is described. The process circulates the collected waste water by negative pressure generated by a water jet pump. The pump has a water seal provided by a portion of the water after purifying. |
