Process for treating sludge and system for the same
US5624550A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 10, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Aug 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F11/147
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Sludge which is supplied from an untreated sludge tank 3 and diluting water from a diluting water supply facility 14 is charged into a continuous kneading mixer 12 for diluting the sludge to make the specific weight of the sludge 1.15 to 1.35. The diluted sludge is supplied to a dehydrating machine 25 in accordance with the capacity of the used dehydrating machine 25. The diluted sludge is firstly added with an inorganic flocculating agent G and is mixed in a first blender 24A and is then added with a high molecular flocculating agent G2 and is mixed in a second blender 24B. Thereafter, the sludge is supplied to a belt press dehydrating machine 25 in which it is subjected to a dehydrating treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.