| 摘要 |
PCT No. PCT/SE95/00477 Sec. 371 Date Oct. 15, 1996 Sec. 102(e) Date Oct. 15, 1996 PCT Filed Apr. 28, 1995 PCT Pub. No. WO95/29877 PCT Pub. Date Nov. 9, 1995Process and equipment for partial but substantial closing of the water and chemical cycle at, inter alia, automatic automobile washing machines. The wash water, which, when used, becomes loaded with oil and heavy metals and contains tensides, completing agents and possibly solvents, is treated by adding breaking and precipitating chemicals, sedimentation and filtration. The main part of the water and chemicals can be reused. Fresh water is needed for the final rinsing only. |
