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    Optical radiation sensor system and method for measuring radiation transmittance of a fluid
    4.
    发明专利
    Optical radiation sensor system and method for measuring radiation transmittance of a fluid 未知

    公开(公告)号：GB2429772A

    公开(公告)日：2007-03-07

    申请号：GB0620549

    申请日：2005-04-19

    Applicant: TROJAN TECHN INC

    Inventor： KNIGHT DOUGLAS GORDON ,  VERDUN ALEX M W ,  VANDOODEWAARD PETER

    IPC: G01J1/42 ,  A61L2/10 ,  A61L2/28 ,  C02F1/32 ,  G01N21/03 ,  G01N21/33 ,  G01N21/59

    Abstract: There is disclosed a process for measuring transmittance of a fluid in a radiation field comprising polychromatic radiation - i.e., radiation at a first wavelength and radiation at a second wavelength different from the first wavelength. The process comprises the steps of: (i) positioning a polychromatic radiation source and a polychromatic radiation sensor element in a spaced relationship to define a first thickness of fluid in the radiation field; (ii) detecting a first . radiation intensity corresponding to radiation at the first wavelength received by the sensor element at the first thickness; (iii) detecting a second radiation intensity corresponding to radiation at the second wavelength received by the sensor element at the first thickness; (iv) altering the first thickness to define a second thickness; (v) detecting a third radiation intensity corresponding to radiation at the first wavelength received by the sensor element at the second thickness; (vi) detecting a fourth radiation intensity corresponding to radiation at the second wavelength received by the sensor element at the second thickness; and (vii) calculating radiation transmittance of the fluid in the radiation field from the first radiation intensity, the second radiation intensity, the third radiation intensity and the fourth radiation intensity. Thus, the present process relates to a novel manner to measure UV transmittance of a fluid in an on-line or random measurement manner.

    ULTRAVIOLET RADIATION LIGHT EMITTING DIODE DEVICE
    6.
    发明专利
    ULTRAVIOLET RADIATION LIGHT EMITTING DIODE DEVICE 未知

    公开(公告)号：CA2689303A1

    公开(公告)日：2008-12-04

    申请号：CA2689303

    申请日：2008-06-02

    Applicant: TROJAN TECHN INC

    Inventor： SASGES MICHAEL ,  KNIGHT DOUGLAS GORDON ,  FRASER JIM

    IPC: A23C3/07 ,  A23D9/06 ,  A61L2/10 ,  A61M1/36 ,  C02F1/32 ,  H01L23/29 ,  H01L29/20 ,  H01L29/201 ,  H01L33/40

    Abstract: There is disclosed an ultraviolet radiation device. The device comprises a base portion, a plurality of semiconductor structures connected to the bas e portion and an ultraviolet radiation transparent element connected to the plurality of semiconductor structures. Preferably: (i) the at least one ligh t emitting diode is in direct contact with the ultraviolet radiation transpa rent element, or (ii) there is a spacing between the at least one light emit ting diode and the ultraviolet radiation transparent element, the spacing be ing substantially completely free of air. There is also disclosed a fluid tr eatment system incorporating the ultraviolet radiation device.

    Optical radiation sensor system and method for measuring radiation transmittance of a fluid
    7.
    发明专利
    Optical radiation sensor system and method for measuring radiation transmittance of a fluid 未知

    公开(公告)号：GB2429772B

    公开(公告)日：2008-11-12

    申请号：GB0620549

    申请日：2005-04-19

    Applicant: TROJAN TECHN INC

    Inventor： KNIGHT DOUGLAS GORDON ,  VERDUN ALEX M W ,  VANDOODEWAARD PETER

    IPC: G01J1/42 ,  A61L2/10 ,  A61L2/28 ,  C02F1/32 ,  G01N21/03 ,  G01N21/33 ,  G01N21/59

    Abstract: A process for measuring transmittance of a fluid with first and second radiation wavelengths includes (i) positioning a polychromatic radiation source and a polychromatic radiation sensor in a spaced relationship to define a first thickness of fluid; (ii) detecting a first radiation intensity corresponding to the first wavelength at the first thickness; (iii) detecting a second radiation intensity corresponding to the second wavelength at the first thickness; (iv) altering the first thickness to define a second thickness; (v) detecting a third radiation intensity corresponding to the first wavelength at the second thickness; (vi) detecting a fourth radiation intensity corresponding to the second wavelength at the second thickness; and (vii) calculating radiation transmittance of the fluid in the radiation field from the first radiation intensity, the second radiation intensity, the third radiation intensity and the fourth radiation intensity.

    SYSTEM FOR DETERMINING UV DOSE IN A REACTOR SYSTEM
    8.
    发明专利
    SYSTEM FOR DETERMINING UV DOSE IN A REACTOR SYSTEM 未知

    公开(公告)号：CA2914752A1

    公开(公告)日：2014-12-11

    申请号：CA2914752

    申请日：2014-06-04

    Applicant: TROJAN TECHN INC

    Inventor： KNIGHT DOUGLAS GORDON ,  DAYNOURI-PANCINO FARNAZ ,  PETRI BRIAN

    IPC: C02F1/30 ,  A61L2/10 ,  A62D3/176 ,  B01J19/12 ,  C02F1/32

    Abstract: The is described a process for determining a validated Reduction Equivalent Dose for reducing the concentration of a target contaminant contained in a fluid in a radiation fluid treatment system. In one embodiment, the process comprises the steps of: (a) determining a short wavelength Reduction Equivalent Dose for the target contaminant or a challenge contaminant in a first region of the electromagnetic spectrum having a wavelength of less than or equal to about 240 nm; (b) determining a long wavelength Reduction Equivalent Dose for the target contaminant or a challenge contaminant in a second region of the electromagnetic spectrum having a wavelength of greater than about 240 nm; and (c) summing the short wavelength Reduction Equivalent Dose and the long wavelength Reduction Equivalent Dose to produce the validated Reduction Equivalent Dose for the target contaminant. In a preferred embodiment, the present invention provides a useful approach for determining the relevant Reduction Equivalent Dose (RED) for Cryptosporidium disinfection and accomplishes this by using the discovered relation between the short wavelength sensor signal and the short wavelength RED, and subtracting the short wavelength RED from the RED determined using a challenge microbe with synthetic lamp sleeves, to obtain the long wavelength RED applicable to Cryptosporidium disinfection. In a bioassay, one would only need the short wavelength sensor reading and the challenge microbe RED using synthetic lamp sleeves to determine the applicable RED, once the relationship between the short wavelength sensor reading and the short wavelength RED was established.

    OPTICAL RADIATION SENSOR SYSTEM AND METHOD FOR MEASURING RADIATION TRANSMITTANCE OF A FLUID
    9.
    发明专利
    OPTICAL RADIATION SENSOR SYSTEM AND METHOD FOR MEASURING RADIATION TRANSMITTANCE OF A FLUID 未知

    公开(公告)号：CA2563425A1

    公开(公告)日：2005-10-27

    申请号：CA2563425

    申请日：2005-04-19

    Applicant: TROJAN TECHN INC

    Inventor： KNIGHT DOUGLAS GORDON ,  VANDOODEWAARD PETER ,  VERDUN ALEX M

    IPC: G01N21/59 ,  A61L2/10 ,  A61L2/28 ,  C02F1/32 ,  G01J1/42 ,  G01N21/03 ,  G01N21/33

    Abstract: There is disclosed a process for measuring transmittance of a fluid in a radiation field comprising polychromatic radiation - i.e., radiation at a first wavelength and radiation at a second wavelength different from the fir st wavelength. The process comprises the steps of: (i) positioning a polychromatic radiation source and a polychromatic radiation sensor element in a spaced relationship to define a first thickness of fluid in the radiation field; (ii) detecting a first . radiation intensity corresponding to radiati on at the first wavelength received by the sensor element at the first thicknes s; (iii) detecting a second radiation intensity corresponding to radiation at t he second wavelength received by the sensor element at the first thickness; (iv ) altering the first thickness to define a second thickness; (v) detecting a third radiation intensity corresponding to radiation at the first wavelength received by the sensor element at the second thickness; (vi) detecting a fourth radiation intensity corresponding to radiation at the second waveleng th received by the sensor element at the second thickness; and (vii) calculatin g radiation transmittance of the fluid in the radiation field from the first radiation intensity, the second radiation intensity, the third radiation intensity and thefourth radiation intensity. Thus, the present process relates to a novel manner to measure UV transmittance of a fluid in an on-li ne or random measurement manner.

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