| 摘要 |
The invention relates to a process for washing clean a purification plant of the type which comprises, for the purpose of removing certain metal compounds which are dissolved in the waste water, at least one prefilter B and at least one ion exchange column C which is coupled in series with the prefilter. The prefilter and the ion exchange column are each washed separately with clean water. The contaminated washing water is collected in a container A and the collected rinsing water has to pass through the prefilter B and the ion exchange column C before it is conducted to the discharge outlet. <IMAGE> |
