Apparatus for treatment of sewage sludge

Details Apparatus for treatment of sewage sludge Apparatus for treatment of sewage sludge

1994-09-26

1996-09-10

Hruskoci, Peter A.

Liquid purification or separation

Automatic control

Thermal

210178, 210181, 210202, 210206, C02F 1114

Patent

active

055542794

ABSTRACT:
A process and apparatus for treating sewage sludge having the steps of providing sludge at a desired rate, mixing the sludge with at least one alkaline additive at a proportionate rate to the sludge to raise the pH of the mixture to at least a desired level, providing a pasteurization chamber having a means to heat the contents of the chamber, continuously delivering the sludge and alkaline additive mixture to the inlet opening of the pasteurization chamber, heating the pasteurization chamber to maintain a minimum temperature of the sludge and alkaline additive mixture in the pasteurization chamber, continuously conveying the sludge and alkaline additive mixture without any substantial agitation of the mixture for a desired duration through the pasteurization chamber such that the thixotropic mixture does not become watery, and continuously discharging the sludge and alkaline additive mixture from the discharge opening of the pasteurization chamber, whereby harmful pathogens are destroyed in the sludge.

REFERENCES:
patent: 1310382 (1919-07-01), Auld et al.
patent: 2021122 (1935-11-01), Fowler
patent: 2026969 (1936-01-01), Flynn
patent: 2043265 (1936-06-01), Roeder
patent: 2297195 (1942-09-01), Behringer
patent: 2723954 (1955-11-01), Young
patent: 3793841 (1974-02-01), Dozsa
patent: 3960718 (1976-06-01), Lebo
patent: 4028240 (1977-06-01), Manchak, Jr.
patent: 4043047 (1977-08-01), Galliker
patent: 4043909 (1977-08-01), Endo et al.
patent: 4079003 (1978-03-01), Manchak
patent: 4190372 (1980-02-01), Takagi et al.
patent: 4270279 (1981-06-01), Roediger
patent: 4295972 (1981-10-01), Kamei
patent: 4295975 (1981-10-01), Kamei
patent: 4306978 (1981-12-01), Wurtz
patent: 4369111 (1983-01-01), Roediger
patent: 4378886 (1983-04-01), Roediger
patent: 4443109 (1984-04-01), Watts
patent: 4460470 (1984-07-01), Reimann
patent: 4474479 (1984-10-01), Redelman
patent: 4478518 (1984-10-01), Tomyn
patent: 4514307 (1985-04-01), Chestnut et al.
patent: 4541986 (1985-09-01), Schwab et al.
patent: 4597872 (1986-07-01), Anderson et al.
patent: 4614587 (1986-09-01), Anderson et al.
patent: 4632759 (1986-12-01), Anderson et al.
patent: 4659471 (1987-04-01), Molin et al.
patent: 4659472 (1987-04-01), Nordlund et al.
patent: 4710032 (1987-12-01), Nordlund
patent: 4760650 (1988-08-01), Theilander et al.
patent: 4781842 (1988-11-01), Nicholson
patent: 4789477 (1988-12-01), Nordlund
patent: 4852269 (1989-08-01), Glorioso
patent: 4902431 (1990-02-01), Nicholson et al.
patent: 4925571 (1990-05-01), Jacob et al.
patent: 4981600 (1991-01-01), Tobler et al.
patent: 5013458 (1991-07-01), Christy, Sr. et al.
patent: 5091079 (1992-02-01), Gayman
patent: 5143626 (1992-09-01), Nugent
patent: 5186840 (1993-02-01), Christy et al.
patent: 5229011 (1993-07-01), Christy, Sr. et al.
patent: 5259977 (1993-11-01), Girovich et al.
patent: 5385673 (1995-01-01), Fergen
patent: 5405536 (1995-04-01), Christy
patent: 5435923 (1995-07-01), Girovich
Wallace & Tiernan, Paste-Type Lime Slaking Systems, Sep., 1989.
Christy, Process Equipment Considerations For Lime Stabilization Systems Producing PSRP and PFRP Quality Sludge.
Christy, Treatment Processes Sludge Disposal Using Lime.
EPA Process Design Manual For Sludge Treatment and Disposal, Sep., 1979.
Gettings, Wurtz and King, Carbon Dixoide Addition to Alkaline Stabilized Biosolids.
EPA Environment Regulations and Technology, Control of Pathogens and Vector Attractiveness in Sewage Sludge, EPA/625,R-92/013, Dec., 1992.
Christensen, Lime Stabilization of Wastewater Sludge-An Assessment, Mar., 1981.
Christensen & Westphal, Lime Stabilization: Effectiveness of Two Process Modifications, Jun., 1982.

Affiliated with

Also associated with

Rating

Apparatus for treatment of sewage sludge does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for treatment of sewage sludge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for treatment of sewage sludge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1318160