| 摘要 |
Sewage disposal works for waste water take up considerable space and are expensive since the through-flow time is long and considerable resources are required to remove the sedimentation. The present invention provides a purification means (1) in the form of a continuous filter cloth which collects particles and oil above a certain viscosity limit and replaces mechanical means now in use, thus considerably reducing the costs entailed in a sewage disposal plant. The purification means (1) replaces or relieves one or more of the purification steps. |
