[특허]Pulsed blackbody radiation flux enhancement

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C02F-001/30
출원번호	US-0007310 (2001-11-30)
발명자 / 주소	Bender, Jim
출원인 / 주소	New Star Lasers, Inc.
대리인 / 주소	Shahani, Esq. Ray K.
인용정보	피인용 횟수 : 39 인용 특허 : 42

초록 ▼

A system and method for enhancing the flux and separation properties of water filtration membranes by oxidizing raw or processed water constituents with direct photolysis of the water matrix by pulsed blackbody UV, yielding ozone and hydrogen peroxide, hydroxyl radicals and other short lived oxidizi

A system and method for enhancing the flux and separation properties of water filtration membranes by oxidizing raw or processed water constituents with direct photolysis of the water matrix by pulsed blackbody UV, yielding ozone and hydrogen peroxide, hydroxyl radicals and other short lived oxidizing species. The result thereof, causing precipitation of inorganic molecules or organically complexed minerals, partial or complete mineralization of organic molecules and the deactivation or destruction of microbes including: virus, bacteria and protozoa. The system and method comprises a pulsed blackbody, deep-UV reactor having at least one treatment chamber, the reactor having a conveying assembly to convey the water to be treated into the chamber; a filter assembly to screen the UV treated water; a caustic supply means for the post-treatment of water; a recovering assembly recovering the permeate at an outlet of the filtration means. The effect of such UV water treatment is multifaceted. One aspect is the reduction of the transmembrane pressure (TMP), another is the reduction of duration of backwash and caustic cleaning cycles. Also, the oxidation of iron and manganese to insoluble compounds, without the addition of oxidizing agents, does not harm the membranes. Iron and manganese turn into hydroxide crystals trapped by the filtration membrane and separated from the permeate. These effects integrate to enhance the water flux through the filter membrane.

대표청구항 ▼

1. A system with enhanced water flux through a filter membrane, the system comprisingan electromagnetic radiator which produces high-power, pulsed blackbody, deep-ultraviolet radiation, the electromagnetic radiator having at least one fluid inlet and at least one fluid outlet and having at least one

1. A system with enhanced water flux through a filter membrane, the system comprisingan electromagnetic radiator which produces high-power, pulsed blackbody, deep-ultraviolet radiation, the electromagnetic radiator having at least one fluid inlet and at least one fluid outlet and having at least one treatment chamber;a filtration membrane, the filter membrane disposed adjacent the at least one fluid outlet of the electromagnetic radiator to filter the water irradiated with the pulsed blackbody, deep-UV irradiation, wherein the precipitation of inorganic molecules and organically complexed minerals, partial or complete mineralization of organic molecules and the deactivation or destruction of microbes caused by the oxidizing species reduce the transmembrane pressure. 2. The system of claim 1 wherein the filtration membrane constitutes a microfiltration membrane. 3. The system of claim 1 wherein the filtration membrane constitutes a plurality of membranes. 4. The system of claim 1 in which the electromagnetic radiator can be pulsed at a rate of between about 0.1 to about 30.0 pulses per second. 5. The system of claim 1 further comprising pump and associated valves for backwashing the filtration membrane. 6. The system of claim 1 further comprising a pre-filter disposed between the electromagnetic radiator and the inlet to the filter membrane. 7. The system of claim 1 in which the electromagnetic radiator comprises a lamp which develops a radiant excitance of between about 40,000 W/cm 2 to about 170,000 W/cm 2 . 8. The system of claim 1 in which the electromagnetic radiator comprises a lamp which develops a peak power output of between about 2 MW to about 6 MW. 9. The system of claim 1 in which the electromagnetic radiator comprises a lamp which radiates electromagnetic energy at wavelengths between about 185 nm to about 3,000 nm. 10. The system of claim 9 in which about 38 percent to about 52 percent of the output electromagnetic energy has wavelengths in the range of between about 185 nm to about 400 nm. 11. A method for enhancement of flux through a hollow fiber-type filter membrane, the method comprising the following steps:treating the water to be filtered by exposure to pulsed blackbody, deep-UV electromagnetic radiation prior to purifying the water with a hollow fiber-type main filter membrane to prevent fouling of the membrane by the group of contaminants of water consisting of organic molecules, metal ions and complexed minerals. 12. The method of claim 11 wherein oxidation of a water matrix by the pulsed blackbody UV yields ozone, hydrogen peroxide, and hydroxyl radicals. 13. The method of claim 12 further comprising the step of backwashing the main filtration membrane. 14. The method of claim 13 in which the step of treating the water with radiation lasts for 30 minutes. 15. The method of claim 12 further comprising the step of pre-filtering the water prior to filtration of the water through the main filter membrane. 16. The method of claim 12 in which the electromagnetic radiation develops a radiant excitance of between about 40,000 W/cm 2 to about 170,000 W/cm 2 . 17. The method of claim 12 in which the electromagnetic radiation develops a peak power output of between about 2 MW to about 6 MW. 18. The method of claim 12 in which the electromagnetic radiation has wavelengths between about 185 nm to about 3,000 nm. 19. The method of claim 13 in which about 38 percent to about 52 percent of the electromagnetic radiation has wavelengths in the range of between about 185 nm to about 400 nm. 20. The method of claim 12 in which the electromagnetic radiation is pulsed at a rate of between about 0.1 to about 30.0 pulses per second.

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[미국특허] Pulsed blackbody radiation flux enhancement 원문보기

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