초록 ▼

A drinking water treatment system includes a pump for pumping water from an aquifer, an aerator connected downstream from the pump for generating an outlet water flow and a hydrogen sulfide-containing gas flow, and a hydrogen sulfide scrubber for scrubbing the hydrogen sulfide-containing gas flow fr

A drinking water treatment system includes a pump for pumping water from an aquifer, an aerator connected downstream from the pump for generating an outlet water flow and a hydrogen sulfide-containing gas flow, and a hydrogen sulfide scrubber for scrubbing the hydrogen sulfide-containing gas flow from the aerator. The hydrogen sulfide scrubber includes at least one scrubber tank and scrubber media contained therein. A scrubbing solution circulator includes a dispenser for dispensing scrubbing solution into contact with the scrubber media, a sump for collecting the scrubbing solution after contact with the scrubber media, and a circulating pump for circulating the scrubbing solution from the sump back to the dispenser after contact with the scrubber media. A triazine compound supply is provided for supplying a triazine compound to the scrubbing solution. The triazine compound may be used in place of caustic to reduce build-up in the scrubber

대표청구항 ▼

1. A drinking water treatment system comprising:a pump for pumping water from an aquifer;an aerator connected downstream from said pump for generating an outlet water flow and a hydrogen sulfide-containing gas flow by extracting hydrogen sulfide from the water;a sanitizer for sanitizing the outlet w

1. A drinking water treatment system comprising:a pump for pumping water from an aquifer;an aerator connected downstream from said pump for generating an outlet water flow and a hydrogen sulfide-containing gas flow by extracting hydrogen sulfide from the water;a sanitizer for sanitizing the outlet water flow from said aerator to make drinking water; anda hydrogen sulfide scrubber for scrubbing the hydrogen sulfide-containing gas flow from said aerator and comprisingat least one scrubber tank and scrubber media contained therein,at least one scrubbing solution circulator comprising a dispenser for dispensing scrubbing solution into contact with said scrubber media, a sump for collecting the scrubbing solution after contact with said scrubber media, and a circulating pump for circulating the scrubbing solution from said sump back to said dispenser after contact with said scrubber media, andat least one triazine compound supply for supplying a triazine compound to the scrubbing solution. 2. A drinking water treatment system according to claim 1 wherein said at least one scrubber tank comprises:a first scrubber tank having a gas flow inlet connected to said aerator to receive the hydrogen sulfide-containing gas flow therefrom, and a gas flow outlet; anda second scrubber tank having a gas flow inlet connected to the gas flow outlet of said first scrubber tank. 3. A drinking water treatment system according to claim 2 wherein said at least one scrubbing solution circulator comprises a first scrubbing solution circulator using a first scrubbing solution in said first scrubber tank, and a second scrubbing solution circulator using a second scrubbing solution in said second scrubber tank. 4. A drinking water treatment system according to claim 3 wherein said at least one triazine compound supply is connected to only said second scrubbing solution circulator; and further comprising a scrubbing solution charging line for supplying a portion of the second scrubbing solution to the first scrubbing solution to charge the first scrubbing solution with the triazine compound. 5. A drinking water treatment system according to claim 4 further comprising a controller for controlling said at east one triazine compound supply. 6. A drinking water treatment system according to claim 5 further comprising at least one hydrogen sulfide sensor connected to said controller; and wherein said controller controls said at least one triazine compound supply based upon said at least one hydrogen sulfide sensor. 7. A drinking water treatment system according to claim 6 wherein said at least one hydrogen sulfide sensor comprises an inlet gas sensor including:a sampling tube having an inlet connected in fluid communication with the hydrogen sulfide-containing gas flow to said first scrubber tank, and an outlet;a hydrogen sulfide sensing device positioned remote from said aerator an connected to the outlet of said sampling tube;a purge pump connected to said sampling tube adjacent the outlet thereof; anda condensation drain valve connected to said sampling tube. 8. A drinking water treatment system according to claim 7 wherein said controller periodically operates said purge pump and said condensation drain valve. 9. A drinking water treatment system according to claim 6 wherein said at least one hydrogen sensor comprises a discharge gas sensor including:a sampling tube having an inlet connected in fluid communication with a discharge gas flow from said second scrubber tank, and an outlet;a hydrogen sulfide sensing device positioned remote from said second scrubber tank and connected to the outlet of said sampling tube;a purge pump connected to said sampling tube adjacent the outlet thereof; anda condensation drain valve connected to said sampling tube. 10. A drinking water treatment system according to claim 9 wherein said controller periodically operates said purge pump and said condensation drain valve. 11. A drinking water treatment system according to claim 3 further comprising a make-up water supply connected to said second scrubbing solution circulator. 12. A drinking water treatment system according to claim 1 wherein said hydrogen sulfide scrubber further comprises:at least one caustic supply; anda switchover valve arrangement for permitting selective alternate operation using said at least one caustic supply or said at least one triazine compound supply. 13. A hydrogen sulfide scrubber for scrubbing hydrogen sulfide-containing gas from water extracted from an aquifer in a drinking water treatment system, the hydrogen sulfide scrubber comprising:at least one scrubber tank;scrubber media within said at least one scrubber tank;at least one scrubbing solution circulator comprising a dispenser for dispensing scrubbing solution into contact with said scrubber media, a sump for collecting the scrubbing solution after contact with said scrubber media, and a circulating pump for circulating the scrubbing solution from said sump back to said dispenser after contact with said scrubber media; andat least one triazine compound supply for supplying a triazine compound to the scrubbing solution. 14. A hydrogen sulfide scrubber according to claim 13 wherein said at least one scrubber tank comprises:a first scrubber tank having a gas flow inlet for receiving the hydrogen sulfide-containing gas flow, and a gas flow outlet; anda second scrubber tank having a gas flow inlet connected to the gas flow outlet of said first scrubber tank. 15. A hydrogen sulfide scrubber according to claim 14 wherein said at least one scrubbing solution circulator comprises a first scrubbing solution circulator using a first scrubbing solution in said first scrubber tank, and a second scrubbing solution circulator using a second scrubbing solution in said second scrubber tank. 16. A hydrogen sulfide scrubber according to claim 15 wherein said at least one triazine compound supply is connected to only said second scrubbing solution circulator; and further comprising a scrubbing solution charging line for supplying a portion of the second scrubbing solution to the first scrubbing solution to charge the first scrubbing solution with the triazine compound. 17. A hydrogen sulfide scrubber according to claim 16 further comprising a controller for controlling said at least one triazine compound supply. 18. A hydrogen sulfide scrubber according to claim 17 further comprising at least one hydrogen sulfide sensor connected to said controller; and wherein said controller controls said at least one triazine compound supply based upon said at least one hydrogen sulfide sensor. 19. A hydrogen sulfide scrubber according to claim wherein said at least one hydrogen sulfide sensor comprises an inlet gas sensor including:a sampling tube having an inlet connected in fluid communication with the hydrogen sulfide-containing gas flow to said first scrubber tank, and an outlet;a hydrogen sulfide sensing device positioned remote from said hydrogen sulfide-containing gas flow connected to the outlet of said sampling tube;a purge pump connected to said sampling tube adjacent the outlet to thereof; anda condensate on drain valve connected to said sampling tube. 20. A hydrogen sulfide scrubber according to claim 19 wherein said controller periodically operates said purge pump and said condensation drain valve. 21. A hydrogen sulfide scrubber according to claim 18 wherein said at least one hydrogen sensor comprises a discharge gas sensor including:a sampling tube having an inlet connected in fluid communication with a discharge gas flow from said second scrubber tank, and a outlet;a hydrogen sulfide sensing device positioned remote from said second scrubber tank and connected to the outlet of said sampling tube;a purge pump connected to said sampling tube adjacent the outlet thereof; anda condensation drain valve connected to said sampling tube. 22. A hydrogen sulfide scrubber according to claim 21 wherein said controller periodically operates s aid purge pump and said condensation drain valve. 23. A hydrogen sulfide scrubber according to claim 15 further comprising a make-up water supply connected to said second scrubbing solution circulator. 24. A hydrogen sulfide scrubber according to claim 13 further comprising:at least one caustic supply; anda switchover valve arrangement for permitting selective alternate operation using said at least one caustic supply or said at lea to one triazine compound supply. 25. A hydrogen sulfide scrubber for a drinking water treatment system for scrubbing hydrogen sulfide-containing gas from water extracted from an aquifer in a drinking water treatment system, the hydrogen sulfide scrubber comprising:a first scrubber tank having a gas flow inlet for receiving the hydrogen sulfide-containing gas flow, and a gas flow outlet;a second scrubber tank having a gas flow inlet connected to the gas flow outlet off said first scrubber tank;scrubber media within each of said first and second scrubber tanks;a first scrubbing solution circulator using a first scrubbing solution i said first scrubber tank, and a second scrubbing solution circulator using a second scrubbing solution in said second scrubber tank, said first and second scrubbing solution circulators each comprisinga dispenser for dispensing scrubbing solution into contact wit said scrubber media,a sump for collecting the scrubbing solution after contact with said scrubber media, anda circulating pump for circulating the scrubbing solution from said sump back to said dispenser after contact with said scrubber media; andat least on triazine compound supply for supplying a triazine compound to said second scrubbing solution circulator. 26. A hydrogen sulfide scrubber according to claim 25 further comprising a scrubbing solution charging line for supplying a portion of the second scrubbing solution to the first scrubbing solution to charge the first scrubbing solution with the triazine compound. 27. A hydrogen sulfide scrubber according to claim 26 further comprising a controller for controlling said at least one triazine compound supply. 28. A hydrogen sulfide scrubber according to claim 27 further comprising at least one hydrogen sulfide sensor connected to said controller; and wherein said controller controls said at least one triazine compound supply based upon said at least one hydrogen sulfide sensor. 29. A hydrogen sulfide scrubber according to claim 28 wherein said at least one hydrogen sulfide sensor comprises an inlet gas sensor including:a sampling tube having an inlet connected in fluid communication with the hydrogen sulfide-containing gas flow to said first scrubber tank, and an outlet;a hydrogen sulfide sensing device positioned remote from said hydrogen sulfide-containing gas flow and connected to the outlet of said sampling tube;a purge pump connected to said sampling tube adjacent the outlet thereof; anda condensation drain valve connected to said sampling tube. 30. A hydrogen sulfide scrubber according to claim 29 wherein said controller periodically operates said purge pump and said condensation drain valve. 31. A hydrogen sulfide scrubber according to claim 28 wherein said at least one hydrogen sulfide sensor comprises a discharge gas sensor including:a sampling tube having an inlet connected in fluid communication with a discharge gas flow from said second scrubber tank, and an outlet;a hydrogen sulfide sensing device positioned remote from said second scrubber tank and connected to the outlet of said sampling tube;a purge pump connected to said sampling tube adjacent the outlet to thereof; anda condensation drain valve connected to said sampling tube. 32. A hydrogen sulfide scrubber according to claim 31 wherein said controller periodically operates said purge pump and said condensation drain valve. 33. A hydrogen sulfide scrubber according to claim 25 further comprising a make-up water supply connected to said second scrubbing solution circulator. 34. A hydrogen sul fide scrubber according to claim 25 further comprising:at least one caustic supply; anda switchover valve arrangement for permitting selective alternate operation using said at least one caustic supply or said at least one triazine compound supply. 35. A method for scrubbing hydrogen sulfide from a hydrogen sulfide-containing gas flow in a drinking water treatment system, the method comprising:dispensing scrubbing solution from a dispenser into contact with scrubber media in at least one scrubber tank;collecting he scrubbing solution in a sump after contact with the scrubber media;circulating the scrubbing solution back to the dispenser after contact to with the scrubber media; andsupplying a triazine compound to the scrubbing solution. 36. A method according to claim 35 wherein the at least one scrubber tank further comprises a first and a second scrubber tank, and wherein the method further comprises:receiving the hydrogen sulfide-containing gas flow in the first scrubber tank;discharging a gas from the first scrubber tank; andreceiving the discharged gas from the first scrubber tank in the second scrubber tank. 37. A method according to claim 36 further comprising using a first scrubbing solution in the first scrubber tank and using a second scrubbing solution in the second scrubber tank. 38. A method according to claim 37 further comprising supplying the triazine compound to only the second scrubbing solution in the second scrubbing tank; and charging the first scrubbing solution with the triazine compound using a portion of the second scrubbing solution. 39. A method according to claim 38 further comprising sensing hydrogen sulfide content in the first and second scrubber tanks using a hydrogen sulfide sensor and controlling the triazine compound supply based upon the sensed hydrogen sulfide content. 40. A method according to claim 39 further comprising sampling the hydrogen sulfide-containing gas flow in a sampling tube and sensing hydrogen sulfide content in the sampling tube. 41. A method according to claim 40 further comprising periodically opening a condensation drain valve connected to the sampling tube and purging the sampling tube. 42. A method according to claim 39 further comprising sampling hydrogen sulfide content from gas discharged from the second scrubber tank in a sampling tube and sensing hydrogen sulfide content in the sampling tube. 43. A method according to claim 42 further comprising periodically opening a condensation drain valve connected to the sampling tube and purging the sampling tube. 44. A method according to claim 36 further comprising supplying make-up water to the second scrubbing solution. 45. A method according to claim 35 wherein the hydrogen sulfide scrubber further comprises at least one caustic supply; and further comprising alternating operation using the at least one caustic supply or the at least one triazine compound supply. 46. A method for retrofitting a hydrogen sulfide scrubber of a drinking water treatment system from a caustic supply to a triazine compound supply, the hydrogen sulfide scrubber comprising first and second scrubber tanks connected in series to a hydrogen sulfide-containing gas flow, the method comprising:disconnecting the caustic supply for the first and second scrubber tank;connecting the triazine compound supply for the second scrubber tank; andconnecting scrubbing solution charging line between the second scrubber tank and the first scrubber tank. 47. A method according to claim 46 wherein the hydrogen sulfide scrubber comprises first and second scrubbing solution circulators associated with the first and second scrubber tanks; and further comprising leaving the first and second scrubbing solution circulators unchanged. 48. A method according to claim 46 wherein the hydrogen sulfide scrubber further comprises first and second make-up water supplies associated with the first and second scrubber tanks; and further comprising shutting off the first make-up wat er supply and reducing a flow of the second make-up water supply. 49. A method according to claim 46 further comprising:installing at least one hydrogen sulfide sensor to sense hydrogen sulfide associated with at least one of the first and second scrubber tanks; andinstalling a controller to control the triazine compound supply bas upon the at least one hydrogen sulfide sensor.