Patent ID: 8157993

Claim:
In a wastewater treatment plant, a waste stream contaminant removal system, comprising: a biological reactor for nitrification and denitrification of an incoming wastewater stream, said biological reactor outputting a wastewater effluent, a wastewater effluent sludge component, and a gas stream having air, nitrous oxide, carbon dioxide and methane; a biological reactor gas output pipe channeling said gas stream to a combustor; a digester receiving and processing said wastewater effluent sludge component by means of an anaerobic sludge digestion process generating a methane gas; said combustor having a combustion chamber supplied by a mixing chamber, said digester providing said digester methane gas to said mixing chamber wherein said methane gas is provided to the combustion chamber from said mixing chamber as a fuel source; wherein the biological reactor gas output pipe channels the gas stream to the mixing chamber wherein the gas stream is passed to the combustion chamber from said mixing chamber; wherein the gas stream methane is burnt as a supplemental combustion chamber fuel source; wherein the nitrous oxide is thermally reduced down to nitrogen (N 2 ) and oxygen (O 2 ) at a temperature in the range of 570 F.