Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2008-05-13
2009-12-22
Hruskoci, Peter A (Department: 1797)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S713000, C210S724000, C210S725000, C210S727000, C210S912000, C210S913000
Reexamination Certificate
active
07635434
ABSTRACT:
Solid and liquid concrete waste is collected from a construction site and safely off-loaded at a treatment site. Solid waste is separated and sent to a crusher to be made into road bed aggregate. Liquid waste is put in a first tank to settle the solids, then moved to a second tank to settle remaining fine solids, and moved to a third tank coupled to a circulation pump with CO2gas injection to lower the pH. The liquid in the third tank is then filtered before discharging for recycle, irrigation or dust control. A precipitate agent is preferable added to the liquid in the third tank to remove heavy metals and the precipitate is periodically backwashed from the filter into the first tank. The sludge created in the settling and filtering process is periodically dewatered in the first tank and mixed with the solid concrete waste sent to the crusher.
REFERENCES:
patent: 2350111 (1944-05-01), Hood
patent: 2359748 (1944-10-01), Clemens
patent: 3278022 (1966-10-01), Moeschler
patent: 4188291 (1980-02-01), Anderson
patent: 4221633 (1980-09-01), Laipenieks
patent: 4678584 (1987-07-01), Elfline
patent: 4943377 (1990-07-01), Legare, III
patent: 4999116 (1991-03-01), Bowers
patent: 5273661 (1993-12-01), Pickett et al.
patent: 5338459 (1994-08-01), Hirose
patent: 5462670 (1995-10-01), Guess
patent: 5618439 (1997-04-01), Allgulin
patent: 5833863 (1998-11-01), Richards et al.
patent: 5992774 (1999-11-01), Oh
patent: 6066262 (2000-05-01), Montgomery et al.
patent: 6287471 (2001-09-01), De Rigaud
patent: 6682655 (2004-01-01), Beckham et al.
patent: 6929695 (2005-08-01), Koinuma et al.
patent: 7494586 (2009-02-01), Mickelson et al.
patent: 2005/0145548 (2005-07-01), Rhoades
patent: 2002137941 (2002-05-01), None
Yelton, Rick, “Treating Process Water”, Publication No. J970441, The Concrete Producer, Jun. 1997.
Engelsgaard Roger
Mickelson Kevin
Concrete Washout Systems, Inc.
Hruskoci Peter A
O'Banion John P.
LandOfFree
Treatment system and method for treating liquid concrete... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Treatment system and method for treating liquid concrete..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treatment system and method for treating liquid concrete... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4146428