Electrolytic-ultrafiltration apparatus and process for recovering solids from a liquid medium
US4331525A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Sep 25, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23V2002/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and apparatus for the recovery of suspended solids from a liquid medium is disclosed. The liquid medium containing suspended solids is circulated through an electrolytic cell and an ultrafiltration unit, the suspended solids being removed from the liquid medium as a uniform particulate mass of low liquid content while a proportionate amount of the liquid and dissolved components such as surfactants is removed through ultrafiltration to avoid a dilution of the liquid medium in a continuous process. The recovered solids, following evaporation of a small amount of remaining liquid, offers a more uniform particle size as well as substantially lower recovery costs when compared with conventional techniques, such as spray-drying, now used in the industry. The disclosed electrolytic-ultrafiltration process offers application to the treatment of industrial products and wastes (polymeric, e.g., PVC and PVC copolymers, rubber, paint, cellulose, paper sludge, food, etc.) and the recovery or concentrating of valuable materials from naturally occuring sources, e.g., whey protein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.