System and method for recovering nutrients from a high nitrogenous liquid waste
Methods of recovering nutrients from a high nitrogenous liquid waste are disclosed. The methods include collecting the high nitrogenous liquid waste, introducing the high nitrogenous liquid waste and an oxidant into a reactor to produce oxy-anions of nitrogen, maintaining a predetermined pH to control concentration of the oxy-anions of nitrogen, and concentrating the liquid to produce a concentrated product and a dilute water. Systems for recovering nutrients from a high nitrogenous waste are also disclosed. The systems include a solids-liquid separator, a reactor having an inlet fluidly connected to the solids-liquid separator and an inlet fluidly connected to a source of an oxidant, a pH control subsystem, and a dissolved solids concentrator.
1. A method of recovering nutrients from a nitrogenous liquid waste having dissolved organic matter, the method comprising:
producing the nitrogenous liquid waste having dissolved organic matter, without subjecting the organic matter to a drying process, the organic matter comprising animal manure, animal litter, sewage sludge, food waste, dairy products, effluent from anaerobic digestion, or a combination thereof;
controlling a concentration of dissolved ions in the nitrogenous liquid waste to reduce or avoid inhibition of oxidation by directing dilution water to the nitrogenous liquid waste, as needed;
introducing the nitrogenous liquid waste having dissolved organic matter and an oxidant into a reactor to produce an intermediate nitrogenous liquid comprising oxy-anions of nitrogen;
maintaining the intermediate nitrogenous liquid at a predetermined pH to control a concentration of the oxy-anions of nitrogen and produce a stabilized nitrogenous liquid; and
concentrating the stabilized nitrogenous liquid to produce a concentrated liquid product and a dilute water.
2. The method of claim 1 , further comprising introducing a base into the reactor.
3. The method of claim 1 , wherein the predetermined pH is between 3 and 9.
4. The method of claim 1 , wherein maintaining the intermediate nitrogenous liquid at the predetermined pH comprises controlling a rate of introduction of the oxidant, controlling a rate of introduction of the nitrogenous liquid waste having dissolved organic matter, introducing a predetermined amount of a base into the nitrogenous liquid waste having dissolved organic matter, or a combination thereof.
5. The method of claim 1 , further comprising directing the dilute water to an on-site demand.
6. The method of claim 5 , wherein the on-site demand is manure flushing, irrigation, or an industrial use.
7. The method of claim 1 , further comprising maintaining a temperature of the nitrogenous liquid waste having dissolved organic matter and/or the intermediate nitrogenous liquid between about 4° C. and about 80° C.
8. The method of claim 1 , wherein the oxidant comprises at least one of oxygen, ozone, a peroxide, and a halogen.
9. The method of claim 1 , wherein the oxidation is catalyzed by microorganisms.
10. The method of claim 1 , wherein concentrating the stabilized nitrogenous liquid comprises directing the stabilized nitrogenous liquid to a membrane based dissolved solids concentrator or an electrochemical separation device.
11. The method of claim 1 , further comprising separating suspended solids from the stabilized nitrogenous liquid.
12. The method of claim 1 , wherein the oxy-anions of nitrogen comprise at least one of nitrite and nitrate.
13. The method of claim 1 , comprising directing the dilution water to the reactor to maintain a total dissolved solids concentration of the nitrogenous liquid waste and/or the intermediate nitrogenous liquid between about 1 g/L and about 500 g/L.
14. The method of claim 13 , wherein directing the dilution water to the reactor comprises maintaining the total dissolved solids concentration of the nitrogenous liquid waste and/or the intermediate nitrogenous liquid between about 1 g/L and about 50 g/L.
15. The method of claim 1 , comprising directing the dilute water to the reactor as the dilution water.
16. A method of recovering nutrients from an ammonia distillate, the method comprising:
controlling a concentration of dissolved ions in the ammonia distillate to reduce or avoid inhibition of oxidation by directing dilution water to the ammonia distillate, as needed;
introducing the ammonia distillate and an oxidant into a reactor to produce an intermediate nitrogenous liquid comprising oxy-anions of nitrogen;
maintaining the intermediate nitrogenous liquid at a predetermined pH to control a concentration of the oxy-anions of nitrogen and produce a stabilized nitrogenous liquid; and
concentrating the stabilized nitrogenous liquid to produce a concentrated liquid product and a dilute water.
17. The method of claim 16 , further comprising introducing a base into the reactor.
18. The method of claim 16 , wherein the predetermined pH is between 3 and 9.
19. The method of claim 16 , wherein maintaining the intermediate nitrogenous liquid at the predetermined pH comprises controlling a rate of introduction of the oxidant, controlling a rate of introduction of the ammonia distillate, introducing a predetermined amount of a base into the ammonia distillate, or a combination thereof.
20. The method of claim 16 , further comprising directing the dilute water to an on-site demand.
21. The method of claim 20 , wherein the on-site demand is manure flushing, irrigation, or an industrial use.
22. The method of claim 16 , further comprising maintaining a temperature of the ammonia distillate and/or the intermediate nitrogenous liquid between about 4° C. and about 80° C.
23. The method of claim 16 , wherein the oxidant comprises at least one of oxygen, ozone, a peroxide, and a halogen.
24. The method of claim 16 , wherein the oxidation is catalyzed by microorganisms.
25. The method of claim 16 , wherein concentrating the stabilized nitrogenous liquid comprises directing the stabilized nitrogenous liquid to a membrane based dissolved solids concentrator or an electrochemical separation device.
26. The method of claim 16 , further comprising separating suspended solids from the stabilized nitrogenous liquid.
27. The method of claim 16 , wherein the oxy-anions of nitrogen comprise at least one of nitrite and nitrate.
28. The method of claim 16 , comprising directing the dilution water to the reactor to maintain a total dissolved solids concentration of the ammonia distillate and/or the intermediate nitrogenous liquid between about 1 g/L and about 500 g/L.
29. The method of claim 28 , wherein directing the dilution water to the reactor comprises maintaining the total dissolved solids concentration of the ammonia distillate and/or the intermediate nitrogenous liquid between about 1 g/L and about 50 g/L.
30. The method of claim 16 , comprising directing the dilute water to the reactor as the dilution water.
31. A method of recovering nutrients from wastewater comprising organic matter, the method comprising:
producing the wastewater comprising organic matter without subjecting the organic matter to a drying process;
controlling a concentration of dissolved ions in the wastewater comprising organic matter to reduce or avoid inhibition of oxidation by directing dilution water to the wastewater comprising organic matter, as needed;
introducing the wastewater comprising organic matter and an oxidant into a reactor to produce an intermediate nitrogenous liquid comprising oxy-anions of nitrogen;
maintaining the intermediate nitrogenous liquid at a predetermined pH to control a concentration of the oxy-anions of nitrogen and produce a stabilized nitrogenous liquid; and
concentrating the stabilized nitrogenous liquid to produce a concentrated liquid product and a dilute water.
32. The method of claim 31 , further comprising introducing a base into the reactor.
33. The method of claim 31 , wherein the predetermined pH is between 3 and 9.
34. The method of claim 31 , wherein maintaining the intermediate nitrogenous liquid at the predetermined pH comprises controlling a rate of introduction of the oxidant, controlling a rate of introduction of the nitrogenous liquid waste having dissolved organic matter, introducing a predetermined amount of a base into the nitrogenous liquid waste having dissolved organic matter, or a combination thereof.
35. The method of claim 31 , further comprising directing the dilute water to an on-site demand.
36. The method of claim 35 , wherein the on-site demand is manure flushing, irrigation, or an industrial use.
37. The method of claim 31 , further comprising maintaining a temperature of the wastewater having organic matter and/or the intermediate nitrogenous liquid between about 4° C. and about 80° C.
38. The method of claim 31 , wherein the oxidant comprises at least one of oxygen, ozone, a peroxide, and a halogen.
39. The method of claim 31 , wherein the oxidation is catalyzed by microorganisms.
40. The method of claim 31 , wherein concentrating the stabilized nitrogenous liquid comprises directing the stabilized nitrogenous liquid to a membrane based dissolved solids concentrator or an electrochemical separation device.
41. The method of claim 31 , further comprising separating suspended solids from the stabilized nitrogenous liquid.
42. The method of claim 31 , wherein the oxy-anions of nitrogen comprise at least one of nitrite and nitrate.
43. The method of claim 31 , comprising directing the dilution water to the reactor to maintain a total dissolved solids concentration of the wastewater and/or the intermediate nitrogenous liquid between about 1 g/L and about 500 g/L.
44. The method of claim 43 , wherein directing the dilution water to the reactor comprises maintaining the total dissolved solids concentration of the wastewater and/or the intermediate nitrogenous liquid between about 1 g/L and about 50 g/L.
45. The method of claim 31 , comprising directing the dilute water to the reactor as the dilution water.