Liquid purification or separation – Processes – Utilizing electrical or wave energy directly applied to...
Patent
1989-08-02
1991-01-08
Hruskoci, Peter
Liquid purification or separation
Processes
Utilizing electrical or wave energy directly applied to...
422 24, 47 65, C02F 132
Patent
active
049833073
ABSTRACT:
A process and apparatus for reducing the dissemination of aquatic organisms and decreasing the risk of diseases caused by fungi, such as Pythium and Phythophthora spp, in greenhouse plants grown hydroponically by Nutrient Film Technique (NFT) by treating the water to be used in the NFT with ultraviolet radiation at a wave length of 2537 .ANG. by passing the water in a zone of restricted width adjacent and exposed to the source of ultraviolet radiation and maintaining the temperature of the water in the range of 15.degree. C. to 26.degree. C. as it is passed at the zone. The apparatus includes an elongated cylindrical housing including a top cap and a bottom cap sealingly closing the cylindrical housing. A water inlet is located on the cylindrical housing near the bottom end cap and water outlet on the cylindrical housing near the top cap. An ultraviolet lamp in the form of an elongated cylindrical member extends concentrically within the housing and through the top cap and bottom cap. The top cap and bottom cap are removably secured to the cylindrical housing for access to the lamp and the interior of the housing.
REFERENCES:
patent: 2189279 (1940-02-01), Bitner
patent: 4179616 (1979-12-01), Coviello et al.
patent: 4438337 (1984-03-01), Forrat
patent: 4780989 (1988-11-01), Mears et al.
Buyanovsky, G., et al.; Ultra-Violet Radiation for the Inactivation of Microorganisms in Hydroponics; Plant and Soil (1981); 60: 131-126.
Ewart, J. M., et al.; Effects of Chlorine and Ultra-Violet Light in Disease Control in NFT; Acta Horticulturae (1980); 98: 317-323.
Howard, R. J.; Effecacy of the Trojan Ultraviolet Water Sterilizer for the Control of Plant Pathogens in Hydroponic Systems; A paper presented to the annual meeting of the Canadian Phytopathological Society; Jun. 20-23, 1982, at Edmonton, Alberta.
Fulton, H. R., et al.; The Fungicidal Action of Ultra-Violet Radiation; J of Agricultural Research (1929) vol. 38, No. 3.
Mone, J. G.; Ultra-Violet Water Purification; Pollution Engineering Magazine (1973); vol. 5, No. 12.
Price, T. V.; Control of Diseases in Hydroponic Systems; Government of Victoria, Agriculture Note Series No. 70 (1980).
Severin, B. F.; Disinfection of Municipal Wastewater Effluents with Ultraviolet Light;J. WPCF (1980); vol. 52, No. 7, pp. 2007-2018.
Severin, B. F.; et al.; Effects of Temperature on Ultraviolet Light Disinfection; Environ Sci. Technol. (1983); vol. 17, No. 12.
Yip, R. W., et al.; Ultraviolet Sterilization of Water--Its Potential and Limitations; Water and Pollution Control (1972).
Qualls, R. G., et al.; The Role of Suspended Particles in Ultraviolet Disinfection; Journal Water Pollution Control Federation (1983); vol. 55, No. 10.
Hruskoci Peter
Serres Naturtek Greenhouses Inc.
Shideler Krisanne
LandOfFree
Method for sterilizing liquids by ultraviolet radiation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for sterilizing liquids by ultraviolet radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for sterilizing liquids by ultraviolet radiation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-932772