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US 5,514,277 AGranted
Treatment of wastewater and sludges
OwnerBoris M. Khudenkoinventor
Life of this patent
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OwnerBoris M. Khudenkoinventor
Estimating the term…
A system for wastewater and sludge treatment utilizes an anaerobic reactor to modify the wastewater and generate sludge and liquid effluent. The sludge is transferred to a conditioner wherein anaerobic, aerobic and chemical means may be utilized to cultivate the required strains of organisms and break down various pollutants. Various chemicals may be solubilized, or precipitated, or adsorbed to remove them from the waste stream. Aerobic conditioning may be used to increase the volume of sludge, and to increase the temperature of the sludge. A shell having multiple compartments can provide for the entire process by utilizing the upper portion for anaerobic reaction and the lower portion for conditioning. An aerobic reactor can be disposed centrally of the conditioning compartments. Pipes and pumps can be used to transfer components from one compartment to another, and to discharge the cleaned effluent. The sludge is further subjected to aerobic reaction and bioheating. Some chemicals may be added to assist in removal of heavy metals and other toxic substances. Finally, the sludge and water are separated, and the sludge is dried.
The method of treatment of influent material comprising the steps of controllable converting at least a portion of the influent material in an anaerobic reactor whereby the constituents of said material are controllably converted into water, gas, residual organics and a first anaerobic sludge, removing the said gas from the said reactor, separating the liquid effluent of the reactor from the said first anaerobic sludge, conditioning the said first anaerobic sludge by converting constituents thereof for converting said first anaerobic sludge to a second anaerobic sludge, and directing at least a portion of the said second anaerobic sludge to said anaerobic reactor.
A method of biological conversion of materials in a dual sludge system comprising the steps of growing a first sludge, simultaneously growing methanogenic sludge, and feeding said material and said methanogenic sludge into said first sludge during the said step of growing the said first sludge.
Dependencies are inferred from the claim text.