| The settled sludges are removed, returned to the beginning of the secondary treatment process, and added to the incoming waste water. |
| Detergent-dispersant additives, for instance, suspend sludges and remove them from the sliding surfaces of internal-combustion engines. |
| Thus, the present invention advantageously avoids the production of tailings sludges caused by clay dispersion. |
| Agitates, homogenizes and keeps in suspension solids in liquids, slurries and sludges in waste water treatment plants and industry. |
| Sometimes, however, lead residues, sludges, or flue dusts are mixed with oxides from the battery treatment plant and processed together. |
| This unit produces high-quality distilled water and a number of sludges, which are decanted, filtered in a press filter and dried. |
