摘要:
A fluid is passed through pores in an electrically insulating membrane. Arranged on the membrane (10a-2,20) are conductive layers (22a, 22b), which are interrupted at the pores. Between the two layers a voltage is applied. The fluid to be treated enters the apparatus by inlet (16) and leaves it by outlet (18). The fluid contains microorganisms or more in general cell material. The voltage is at least so high that a cell wall of the microorganisms is deactivated (for instance perforated) while they flow through the pores.
摘要:
Disclosed is an apparatus for generating ultraviolet rays and ozone using microwaves to sterilize water in a swimming pool or potable liquids such as purified water, milk and juice and to eliminate impure organic matters contained in the water. The apparatus includes a housing (10) having an upper liquid inlet (12) and a lower liquid outlet (14), and defining a sterilization chamber (16) therein. The housing (10) includes therein a transparent partition wall (18), which is spaced from a side vertical wall of the housing (10) to serve as a side wall of the sterilization chamber (16). The transparent partition wall (18) is provided with several electrodeless ultraviolet lamps (20). Wave guides (22) are attached to the back faces of the electrodeless ultraviolet lamps (20), respectively, which are widened toward the ultraviolet lamps (20). Microwave generator units (24) are attached to back ends of the wave guides (22), respectively. The sterilization chamber (16) is provided at a bottom thereof with an air inlet pipe (26) and at a top thereof with an air outlet pipe (28).
摘要:
A method and device to treat liquid to reduce the amount of microorganisms in the liquid to a preselected level and/or to mitigate the growth of microorganisms are disclosed. Utilizing the method or device, liquid product is sprayed into a cavity of a reactor using a nozzle that produces a flat spray to provide means for efficient heating and treatment of the liquid.
摘要:
A fluid steriliser comprising a fluid duct having a UV transmissive wall providing a surface area for irradiation, wherein the cross section of the duct is between 1x10 -4 m 2 and 5x10 -2 m 2 and the thickness of the duct defines the depth of fluid flow adjacent the UV transmissive wall of no more than 50mm; a source of UV radiation arranged to irradiate fluid flowing in the duct through the UV transmissive wall such that the UV radiation incident on fluid in the duct has a UV power density; a plurality of mixing stages configured to provide turbulent flow in the fluid and spaced apart along the length of the duct wherein the segments of the duct between the mixing stages are arranged to provide flow adjacent the UV transmissive wall; a flow control means arranged to control the linear speed of fluid flow along the duct based on the length of the duct and the UV power density so that at least 300 Joules of UV energy per square metre of the surface area for irradiation is provided to the fluid during the dwell time of the fluid in the duct.