Method of monitoring flocculant effectiveness
US4976871A · kind A · utility
10Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Oct 17, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D21/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Continuous monitor to determine effective performance of a flocculant used to dewater a sludge stream, in which a voltage waveform of water clarity, generated by a sensor opposed to a light beam transmitted across the stream, is digitized by a comparator; the comparator is insensitive to sludge flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.