Equipment and method of local streaming potential measurement for monitoring the process of membrane fouling in hollow-fiber membrane filtrations
US6727099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2001 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Apr 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25375
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to an apparatus for monitoring the progress of membrane fouling that occurs on pores as well as on the surface of a membrane by means of variations of zeta potential (&zgr;) of a hollow-fiber membrane according to time passage of filtration of a suspension, wherein colloid particles, biopolymers and other inorganic particles are dispersed, and the method thereof. Moreover, the present invention also relates to a method to identify the effect of concentration polarization layer and cake layer which can vary according to the axial position of a hollow-fiber and the developing progress of a membrane fouling by measuring the position-dependent zeta potential of the hollow-fiber membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.