초록 ▼

A system and method for inhibiting and precluding the buildup and offgas of offensive odors and corrosive sulfuric acid in wastewater in a variety of locations in a sewage system through the use of superoxygenation. The system comprises an oxygenator having an inverse conical section for a downward

A system and method for inhibiting and precluding the buildup and offgas of offensive odors and corrosive sulfuric acid in wastewater in a variety of locations in a sewage system through the use of superoxygenation. The system comprises an oxygenator having an inverse conical section for a downward flow of oxygen gas injected into the sewage stream prior to entering the oxygenator. In one embodiment, the system is inserted directly into the main sewage stream, while in another embodiment, the system is used to treat a sidestream from the main sewage stream.

대표청구항 ▼

I claim: 1. A wastewater treatment system, comprising: a raw sewage source for flow of sewage therethrough, the raw sewage source having an inlet and an outlet; a raw sewage inlet for receipt and flow of sewage therethrough, the sewage inlet having a first end and a second end, the first end of the

I claim: 1. A wastewater treatment system, comprising: a raw sewage source for flow of sewage therethrough, the raw sewage source having an inlet and an outlet; a raw sewage inlet for receipt and flow of sewage therethrough, the sewage inlet having a first end and a second end, the first end of the raw sewage inlet in fluid communication with the raw sewage source; a sewage outlet for flow and discharge of oxygenated sewage therethrough, the sewage outlet having a first end and a second end, the second end of the sewage outlet in fluid communication with the raw sewage source; a source of high purity oxygen operably connected to the raw sewage inlet between the first and second ends of the raw sewage inlet to permit oxygen gas from the source to be introduced to the raw sewage inlet; and an oxygenator, the oxygenator comprising a container comprising an inverse conically shaped portion having a first end and a second end, a cylindrical portion having a first end attached to the second end of the inverse conically shaped portion and a second closed end, an inlet at the first end of the inverse conically shaped portion, and an outlet extending perpendicularly from the cylindrical portion and spaced apart from the second closed end, the oxygenator inlet, the inverse conically shared portion, and the cylindrical portion coaxially surrounding a vertical axis and the oxygenator outlet extending perpendicular to the vertical axis, the oxygenator inlet and the oxygenator outlet having a first diameter, the first end of the inverse conically shaped portion having said first diameter, the second end of the inverse conically shaped portion and the cylindrical portion having a second diameter, and the inlet of the oxygenator operably connected to the second end of the raw sewage inlet and the outlet of the oxygenator operably connected to the first end of the sewage outlet, such that the combination of sewage and oxygen gas collected in the raw sewage inlet is introduced to the oxygenator through the oxygenator inlet, flows through the oxygenator to the oxygenator outlet and through the sewage outlet, thereby discharging oxygenated sewage containing dissolved oxygen from the oxygenator; wherein the first diameter of the oxygenator inlet and the oxygenator outlet and the first end of the inverse conically shaped portion of the oxygenator is smaller than the second diameter of the second end of the inverse conically shaped portion and the cylindrical portion of the oxygenator. 2. The system of claim 1, wherein the oxygenator is configured to be operable to convert sewage introduced to the oxygenator through the oxygenator inlet into oxygenated sewage containing at least about 10 mg/L of dissolved oxygen. 3. The system of claim 1, wherein the oxygenator is configured to be operable to cause at least about 85% of the oxygen gas to be dissolved into the oxygenated sewage. 4. The system of claim 1, wherein the system is configured to consume less than about 1,000 kwhr per ton of dissolved oxygen during system operation. 5. A wastewater treatment system comprising: a sewage line having a first end and a second end; a first sewage connection comprising an aperture and located proximate to the first end of the sewage line; a second sewage connection comprising an aperture and located proximate to the second end of the sewage line; a pump operably connected to the first sewage connection for pulling a portion of sewage flowing through the sewage line through the aperture of the first sewage connection; a sewage inlet for receipt and flow of sewage therethrough, the sewage inlet having a first end and a second end, the first end of the sewage inlet operably connected to the pump; a sewage outlet for flow and discharge of oxygenated sewage therethrough, the sewage outlet having a first end and a second end, and the second end of the sewage outlet operably connected to the aperture of the second sewage connection; a source of high purity oxygen operably connected to the sewage inlet between the first and second ends of the sewage inlet to permit oxygen gas from the source to be introduced to the sewage inlet; and an oxygenator, the oxygenator comprising a container comprising an inverse conically-shaped portion, a cylindrical portion, an inlet, and an outlet, the inlet and the outlet having a first diameter, the inverse conically shaped portion comprising a first end having said first diameter and a second end having a second diameter, the cylindrical portion having said second diameter and a first end connected to the second end of the inverse-shaped conical portion and a second closed end, and the inlet of the oxygenator operably connected to the second end of the sewage inlet and the outlet of the oxygenator extending perpendicularly from the cylindrical portion and spaced apart from the second closed end and being operably connected to the first end of the sewage outlet, the inverse conical portion, the cylindrical portion, and the oxygenator inlet coaxially surrounding a vertical axis and the oxygenator outlet extending perpendicular to the vertical axis such that the combination of sewage and oxygen gas collected in the sewage inlet is introduced to the oxygenator through the oxygenator inlet, flows through the oxygenator to the oxygenator outlet and through the sewage outlet, thereby discharging oxygenated sewage containing dissolved oxygen from the oxygenator; wherein the first diameter of the oxygenator inlet and the oxygenator outlet and the inverse conically shaped portion of the oxygenator is smaller than the second diameter of the second end of the inverse conically shaped portion and the cylindrical portion of the oxygenator. 6. The system of claim 5, wherein the oxygenator is configured to be operable to convert sewage introduced to the oxygenator through the oxygenator inlet into oxygenated sewage containing at least about 10 mg/L of dissolved oxygen. 7. The system of claim 5, wherein the oxygenator is configured to be operable to cause at least about 85% of the oxygen gas to be dissolved into the oxygenated sewage. 8. The system of claim 5, wherein the system is configured to consume less than about 1,000 kwhr per ton of dissolved oxygen during system operation. 9. A wastewater treatment system, comprising: a raw sewage source for flow of sewage therethrough, the raw sewage source having an inlet and an outlet; a sewage inlet for receipt and flow of sewage therethrough, the sewage inlet having a first end and a second end, the first end of the raw sewage inlet in fluid communication with the raw sewage source; a sewage outlet for flow and discharge of oxygenated sewage therethrough, the sewage outlet having a first end and a second end, the second end of the sewage outlet in fluid communication with the raw sewage source; an oxygenator, the oxygenator comprising a container comprising an inverse conically shaped portion having a first end and a second end, a cylindrical portion having a first end attached to the second end of the inverse conically shared portion and a second closed end, an inlet at the first end of the inverse conically shaped portion, and an outlet extending perpendicularly from the cylindrical portion and spaced apart from the second closed end, the oxygenator inlet, the inverse conically shaped portion, and the cylindrical portion coaxially surrounding a vertical axis and the oxygenator outlet extending perpendicular to the vertical axis, the oxygenator inlet and the oxygenator outlet having a first diameter, the first end of the inverse conically shaped portion having said first diameter, the second end of the inverse conically shaped portion and the cylindrical portion having a second diameter, the inlet of the oxygenator operably connected to the second end of the sewage inlet, and the outlet of the oxygenator operably connected to the first end of the sewage outlet; and a source of oxygen in communication with the oxygenator; wherein the source of oxygen is capable of permitting oxygen gas from the source to be introduced into the oxygenator and the combination of sewage and oxygen gas flows through the oxygenator to the oxygenator outlet and through the sewage outlet, thereby discharging oxygenated sewage containing dissolved oxygen from the oxygenator; and wherein the first diameter of the oxygenator inlet and the oxygenator outlet and of the first end of the inverse conically shaped portion of the oxygenator is smaller than the second diameter of the second end of the inverse conically shaped portion and the cylindrical portion of the oxygenator. 10. The wastewater treatment system of claim 1, wherein the oxygenator is positioned so as to allow sewage within the oxygenator to flow in a substantially downward direction.