Method of operating and monitoring a group of filter membrane modules, and a group of modules implementing the method
US6001254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1997 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Dec 8, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of operating and monitoring a group of filter membrane modules connected in parallel and with the modules being periodically backwashed, in which: PA1 raw water to be treated is injected at a regulated pressure and the permeate outlet pressure is regulated to less than the inlet pressure; PA1 the group is provided with a water meter (60) on the raw water inlet duct and with three pressure sensors, one on the raw water inlet, one on the permeate outlet, and one on the backwash circuit, the meter and the sensors (100) delivering signals to a controller; PA1 each module is backwashed in succession with permeate from the other modules, with each module being individualized at that moment, thereby making it possible with aid of the water meter and of the pressure sensors to determine the permeability (150) in backwashing specific to the module as individualized in this way, and also to determine the production permeability of the remainder of the modules; and PA1 the values determined in this way are compared with reference values in order to modify the periodicity of backwashes and to proceed with module cleaning, and also to detect any anomaly in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.