Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Automatic analytical monitor and control of industrial process
Reexamination Certificate
2008-07-29
2008-07-29
Ludlow, Jan M. (Department: 1743)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Automatic analytical monitor and control of industrial process
C422S105000, C210S304000, C210S335000
Reexamination Certificate
active
10747167
ABSTRACT:
A method and system for treating a fluid containing entrained cementitious particles involves drawing the fluid from a storage location, pre-filtering the fluid, dividing the pre-filtered fluid into a flow of permeate and a flow of bypass by passing said pre-filtered fluid through a tangential flow filter. The permeate flow is fluid that has passed through a polymeric membrane filter media disposed in the tangential flow filter, while the bypass flow is flow exiting said tangential flow filter without passing through said membrane filter media. The system and method also includes a pH probe for testing the pH of the filtrate, and a metering pump operated by a controller which injects a neutralizing agent into the filtrate to reduce the alkalinity of the filtrate before discharge.
REFERENCES:
patent: 3909405 (1975-09-01), Aoyama
patent: 4200526 (1980-04-01), Johnson et al.
patent: 4999116 (1991-03-01), Bowers
patent: 5182023 (1993-01-01), O'Connor et al.
patent: 5264132 (1993-11-01), Speranza et al.
patent: 5320755 (1994-06-01), Hagqvist
patent: 5366634 (1994-11-01), Vijayan et al.
patent: 5460723 (1995-10-01), Bourbigot et al.
patent: 5501798 (1996-03-01), Al-Samadi et al.
patent: 6074561 (2000-06-01), Jablonsky
patent: 6113797 (2000-09-01), Al-Samadi
patent: 6368849 (2002-04-01), Norddahl
patent: 6454946 (2002-09-01), DeFrees
patent: 6623643 (2003-09-01), Chisholm et al.
patent: 6954701 (2005-10-01), Wolfe
patent: 2002/0011450 (2002-01-01), Kelly et al.
patent: 2002/0179545 (2002-12-01), Rosenberger et al.
patent: 2003/0201215 (2003-10-01), Evanovich et al.
patent: 2004/0007358 (2004-01-01), Lien
patent: 2004/0104157 (2004-06-01), Beeman et al.
Cathryn Hodson, “Membrane Filtration: Live Long and Cost Less”, Apr. 1997Pollution Engineering, vol. 29, No. 4.
Web page, Neutralization Chemicals, A White Paper by Wastech Controls & Engineering, Inc., http://www.wastechengineering.com/papers
eutralization—chemicals.htm date unknown.
Ludlow Jan M.
Skinner & Associates
LandOfFree
Water treatment 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 Water treatment system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water treatment system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3943094