A sulphur denitrification system includes a liquid input fluidly coupled to a source of saltwater that includes nitrate; a liquid output fluidly coupled to the source of saltwater; a plurality of vertically-oriented tanks, at least one of the tanks including a liquid inlet that is fluidly coupled to
A sulphur denitrification system includes a liquid input fluidly coupled to a source of saltwater that includes nitrate; a liquid output fluidly coupled to the source of saltwater; a plurality of vertically-oriented tanks, at least one of the tanks including a liquid inlet that is fluidly coupled to the liquid input to receive a flow of the saltwater, a volume configured to enclose a plurality of sulphur particles that support denitrification bacteria that biologically transform the nitrate into at least one of nitrous oxide or nitrogen gas, and a liquid outlet fluidly coupled to the liquid output and the liquid inlets of the tanks; and a circulation system configured to circulate a portion of the saltwater though the liquid input to the liquid inlets of the plurality of tanks, through the plurality of tanks, and from the liquid outlets of the tanks to the liquid output and the liquid inlets of the tanks.
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1. A sulphur denitrification system, comprising: a liquid input fluidly coupled to a source of saltwater that includes nitrate;a liquid output fluidly coupled to the source of saltwater;a plurality of vertically-oriented tanks, at least one of the tanks comprising: a liquid inlet that is fluidly cou
1. A sulphur denitrification system, comprising: a liquid input fluidly coupled to a source of saltwater that includes nitrate;a liquid output fluidly coupled to the source of saltwater;a plurality of vertically-oriented tanks, at least one of the tanks comprising: a liquid inlet that is fluidly coupled to the liquid input to receive a flow of the saltwater,a volume configured to enclose a plurality of sulphur particles that support denitrification bacteria that biologically transform the nitrate into at least one of nitrous oxide or nitrogen gas, anda liquid outlet fluidly coupled to the liquid output and the liquid inlets of the tanks; anda circulation system configured to circulate a portion of the saltwater though the liquid input to the liquid inlets of the plurality of tanks, through the plurality of tanks, and from the liquid outlets of the tanks to the liquid output and the liquid inlets of the tanks. 2. The sulphur denitrification system of claim 1, wherein the plurality of tanks are fluidly coupled in parallel between the liquid input and the liquid output. 3. The sulphur denitrification system of claim 1, wherein at least one of the plurality of tanks comprises a volume configured to enclose a plurality of calcium carbonate particles. 4. The sulphur denitrification system of claim 3, further comprising a carbon dioxide injection device fluidly coupled to the volume configured to enclose the plurality of calcium carbonate particles, the carbon dioxide injection device configured to circulate a flow of carbon dioxide into the volume. 5. The sulphur denitrification system of claim 1, further comprising a flow control device fluidly coupled between the liquid outlets of the tanks and the liquid inlets of the plurality of tanks. 6. The sulphur denitrification system of claim 1, wherein the flow control device comprises a modulating valve positioned in a bypass conduit coupled between the liquid outlets of the tanks and the liquid inlets of the plurality of tanks. 7. The sulphur denitrification system of claim 1, wherein the denitrification bacteria comprises Thiobacillus denitrificans. 8. The sulphur denitrification system of claim 1, wherein at least one of the plurality of tanks further comprises a gas release device positioned at or near a top portion of the tank, the gas release device configured to open and fluidly couple the volume of the tank to an ambient environment at or above a set pressure in the volume. 9. The sulphur denitrification system of claim 1, wherein the liquid output comprises an expansion valve and a gas release device positioned adjacent the expansion valve, the expansion valve configured to reduce a pressure of the saltwater in the circulation system to at or near ambient pressure. 10. The sulphur denitrification system of claim 1, wherein the circulation system comprises one or more pumps fluidly coupled to the liquid input, the liquid output, and the plurality of tanks with fluid conduits. 11. The sulphur denitrification system of claim 1, further comprising a temperature control system that comprises: at least one temperature sensor mounted in at least one of the liquid input, the liquid output, or the liquid outlet; anda heater mounted in at least one of the liquid input, the liquid output, or the liquid outlet, and configured to raise a temperature of the flow of the saltwater. 12. The sulphur denitrification system of claim 1, further comprising an ozone system that comprises: at least one oxidation reduction potential sensor mounted in at least one of the liquid input, the liquid output, or the liquid outlet; andone or more ozone contactors mounted in the liquid output and configured to inject ozone into the flow of the saltwater. 13. The sulphur denitrification system of claim 1, wherein the source of saltwater comprises an artificial animal habitat. 14. The sulphur denitrification system of claim 13, wherein the artificial animal habitat comprises at least one of an aquarium or a recirculating aquaculture system. 15. A sulphur denitrification process, comprising: circulating saltwater from a source of saltwater that comprises nitrate through a liquid input to a plurality of vertically-oriented tanks;circulating at least a portion of saltwater through liquid inlets of at least one of the plurality of tanks and through a plurality of sulphur particles that support denitrification bacteria within the tank;transforming at least a portion of the nitrate, with the denitrification bacteria, to at least one of nitrous oxide or nitrogen gas;circulating the portion of saltwater from the volumes of the plurality of tanks through liquid outlets of the plurality of tanks;proportioning the portion of saltwater circulated from the liquid outlets into a first flow of saltwater and a second flow of saltwater;circulating the first flow of saltwater from the liquid outlets to the source of saltwater; andcirculating the second flow of saltwater to the liquid inlets of the plurality of tanks. 16. The sulphur denitrification process of claim 15, further comprising circulating the portion of saltwater through the vertically-oriented tanks in parallel. 17. The sulphur denitrification process of claim 15, further comprising circulating another portion of the saltwater through a liquid inlet of another of the plurality of tanks and through calcium carbonate enclosed within the other tank. 18. The sulphur denitrification process of claim 17, further comprising: injecting carbon dioxide into the other tank that encloses the calcium carbonate; andincreasing a rate of dissolution of the calcium carbonate into the other portion of saltwater based on the injected carbon dioxide. 19. The sulphur denitrification process of claim 18, wherein injecting carbon dioxide into the other tank that encloses the calcium carbonate comprises: comparing a pH level of the saltwater to a threshold value pH;based on the comparison, injecting the carbon dioxide into the other tank that encloses the calcium carbonate. 20. The sulphur denitrification process of claim 15, further comprising controlling a flow rate of the second flow of saltwater from the liquid outlets to the liquid inlets. 21. The sulphur denitrification process of claim 15, wherein the denitrification bacteria comprises Thiobacillus denitrificans. 22. The sulphur denitrification process of claim 15, further comprising releasing nitrogen gas from the at least one tank to an ambient environment. 23. The sulphur denitrification process of claim 15, further comprising: reducing a pressure of the first flow of saltwater circulating to the source of saltwater to at or near ambient pressure; andbased on the reduction of pressure, releasing nitrogen gas from the first flow of saltwater. 24. The sulphur denitrification process of claim 15, further comprising: reducing a pressure of the second flow of saltwater circulating to the liquid inlets of the plurality of tanks to at or near ambient pressure; andbased on the reduction of pressure, releasing nitrogen gas from the second flow of saltwater. 25. The sulphur denitrification process of claim 15, wherein the source of saltwater comprises an artificial animal habitat. 26. A system, comprising: a water holding tank that comprises a volume of water that includes nitrate;a denitrification system fluidly coupled to the water holding tank to receive a flow of water from the water holding tank, circulate the flow of water through a plurality of denitrification chambers, and transform at least a portion of the nitrate into nitrogen gas in the chambers; anda control system, comprising: at least one sensor positioned in the flow of water;one or more hardware processors; anda data store coupled to the one or more hardware processors and storing instructions which, when executed by the one or more hardware processors, causes the one or more hardware processors to perform operations comprising; receiving, from the at least one sensor, a measurement associated with a nitrate concentration in the flow of water;comparing the measurement with a nitrate concentration setpoint; andadjusting a component of the denitrification system based on the measurement exceeding the nitrate concentration setpoint. 27. The system of claim 26, wherein adjusting a component of the denitrification system comprises: modulating at least one valve of the denitrification system to reduce a rate of flow of the water recirculated directly from outlets of the plurality of denitrification tanks to inlets of the denitrification tanks. 28. The system of claim 26, wherein adjusting a component of the denitrification system comprises: adjusting a speed of a pump of the denitrification system to reduce a rate of flow of the water from the water holding tank to the denitrification system. 29. The system of claim 26, wherein adjusting a component of the denitrification system comprises: injecting a carbon dioxide fluid into a pH balancing tank of the denitrification system to increase a rate of dissolution of calcium carbonate or aragonite into the flow of water. 30. The system of claim 26, wherein adjusting a component of the denitrification system comprises: adjusting an expansion valve of the denitrification system to decrease a pressure of the flow of water circulated from the denitrification system back to the water holding tank. 31. A method, comprising: circulating saltwater from a saltwater holding tank to a plurality of tanks;circulating a first portion of the saltwater through sulphur and denitrification bacteria stored in at least one of the plurality of tanks to reduce a nitrate concentration in the saltwater at a rate of nitrate concentration reduction;circulating a second portion of the saltwater through calcium carbonate or aragonite stored in at least another of the plurality of tanks;mixing the first and second portions of the saltwater downstream of the plurality of tanks;injecting a carbon dioxide fluid into the another of the plurality of tanks; andincreasing the rate of nitrate concentration reduction in the saltwater based, at least in part, on injecting the carbon dioxide fluid. 32. The method of claim 31, further comprising: increasing, based on the injected carbon dioxide fluid, a concentration of calcium carbonate or aragonite dissolved into solution in the mixed first and second portions of the saltwater. 33. The method of claim 32, wherein increasing the rate of nitrate concentration reduction in the saltwater based, at least in part, on injecting the carbon dioxide fluid comprises: increasing the rate of nitrate concentration reduction in the saltwater based on the increased concentration of calcium carbonate or aragonite dissolved into solution in the mixed first and second portions of the saltwater.
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이 특허에 인용된 특허 (5)
Lee Phillip G. (Galveston TX) Turk Philip E. (Galveston TX) Whitson John L. (Galveston TX), Controlled denitrification process and system.
Jaubert Jean M. (Parc Coromandel ; 18 Ave. Gravier 06100 Nice FRX), System for biological purification of water containing organic materials and derivative products.
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