System and method for recovering nitrogenous compounds from a gas stream

A method of recovering nitrogenous compounds from a gas stream, the method comprising:

• introducing the gas stream comprising nitrogenous compounds into a nitrogenous liquid comprising a salt of ammonia;
• introducing a base into the nitrogenous liquid;
• introducing an oxidant into the nitrogenous liquid to oxidize a predetermined amount of the nitrogenous compounds into oxy-anions of nitrogen;
• and
• collecting a liquid product comprising at least a fraction of the nitrogenous liquid, remaining nitrogenous compounds, and the oxy-anions of nitrogen.

A method of recovering nitrogenous compounds from a gas stream, the method comprising:

• introducing the gas stream comprising nitrogenous compounds into a nitrogenous liquid comprising a salt of ammonia;
• introducing an oxidant into the nitrogenous liquid to oxidize a predetermined amount of the nitrogenous compounds into oxy-anions of nitrogen;
• collecting a liquid product comprising at least a fraction of the nitrogenous liquid, remaining nitrogenous compounds, and the oxy-anions of nitrogen;
• and
• concentrating the liquid product by removing excess water.

A method of recovering nitrogenous compounds from a gas stream, the method comprising:

• introducing the gas stream comprising nitrogenous compounds into a nitrogenous liquid comprising a salt of ammonia;
• dosing the nitrogenous liquid with a biological catalyst;
• introducing an oxidant into the nitrogenous liquid to oxidize a predetermined amount of the nitrogenous compounds into oxy-anions of nitrogen;
• collecting a liquid product comprising at least a fraction of the nitrogenous liquid, remaining nitrogenous compounds, and the oxy-anions of nitrogen;
• separating solids from the liquid product;
• and
• returning at least a fraction of the separated solids to the nitrogenous liquid.

A system for removing nitrogenous compounds from a gas stream, the system comprising:

• a reaction subsystem comprising at least one absorption chamber, a treated gas outlet, and a product outlet, the reaction subsystem fluidly connectable to a gas stream comprising nitrogenous compounds, a source of water, a source of an oxidant, and a source of a base, and constructed and arranged to combine the gas stream, the water, the oxidant, and the base;
• an oxidation control subsystem configured to maintain a predetermined oxidation reduction potential (ORP) within the reaction subsystem;
• a dissolved solids concentrator fluidly connected downstream of the reaction subsystem through the product outlet, the dissolved solids concentrator comprising a concentrated product outlet and a dilute liquid outlet;
• and
• a recirculation line extending between the dissolved solids concentrator through the dilute liquid outlet and a recycle inlet of the reaction subsystem.