Polymer control system

Details Polymer control system Polymer control system

2007-12-04

2007-12-04

Griffin, Walter D. (Department: 1743)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S091000, C210S400000, C210S401000, C210S745000, C210S783000, C210S086000, C700S271000, C700S273000

Reexamination Certificate

active

11255636

ABSTRACT:
A feedback control for a polymer dispensing system, which otherwise continuously adjusts the polymer feedrate so as to keep the measured streaming current of filtrate from a sludge dewatering process at one predetermined setpoint. The feedback control includes a video camera focused on sludge as it trails behind plows on a dewatering belt, a video image processing system for converting the video signal into single numbers known as “camera readings”, and a computer programmed both to compare them with a “camera reading” setpoint and to determine whether the filtrate charge is more positive or more negative than it normally is whenever the “camera reading” deviates from its setpoint by a threshold amount. A controller, activated by the computer, incrementally resets the polymer feedrate in such a direction as to restore the normal cationic charge of the filtrate. The feedback control uses the streaming current value measured immediately after each “camera reading” excursion to update the streaming current setpoint.

REFERENCES:
patent: 5380440 (1995-01-01), Chipps

Affiliated with

Also associated with

Rating

Polymer control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymer control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3873877