Determination of water treatment parameters based on absorbance and fluorescence

A technology of absorbance and water treatment, applied in fluorescence/phosphorescence, test water, color/spectral characteristic measurement, etc., can solve problems such as complex cost, achieve low manufacturing cost, eliminate noise and drift sources

Active Publication Date: 2017-09-26
HORIBA INSTR +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To provide accuracy and flexibility for a variety of applications, these instruments may include separate detectors for absorption and fluorescence measurements, where these detectors include correlations of multiple mirrors, beam splitters, lenses, and

Method used

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  • Determination of water treatment parameters based on absorbance and fluorescence
  • Determination of water treatment parameters based on absorbance and fluorescence
  • Determination of water treatment parameters based on absorbance and fluorescence

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[0027] Various representative embodiments of systems and methods according to the present disclosure are described in detail. It should be understood, however, that the representative embodiments are exemplary only, and that systems and methods according to the present disclosure may be embodied in various and alternative forms. The figures are not necessarily to scale and some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. Simplified flowchart or block diagrams may be provided to illustrate the operation of representative embodiments of systems or methods. Those of ordinary skill in the art will appreciate that this order of steps or processes may not be required for a particular application, that some steps may be om...

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Abstract

A monitoring system configured to receive an on-line sample associated with a process includes a sample chamber positioned to receive the on-line sample and a detector positioned to selectively receive and detect multiple wavelengths of light transmitted through the sample during an absorbance measurement, and emitted by the sample during a fluorescence measurement in response to illumination by each of the at least one excitation wavelength. An optical fiber couples light transmitted through the sample and directs the transmitted light to the multi-channel detector during the absorbance measurement. Optics direct light emitted by the sample during the fluorescence measurement to the detector without passing through any optical fiber. A computer in communication with the detector is configured to correct the fluorescence measurement using the absorbance measurement and determine a sample parameter based on the fluorescence and absorbance measurements of the on-line sample.

Description

technical field [0001] The present disclosure relates to instruments for the indirect determination of parameters used in water treatment equipment, such as biological oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon ( TOC), trihalomethane formation potential (THMFP), etc. Background technique [0002] Water treatment plants, including those treating surface water sources, are generally subject to various government requirements for the effluent distributed from the plant and for intermediate by-products that may be produced during treatment. In the United States, the Environmental Protection Agency (EPA) requires water treatment plants to use a coagulation process to reduce total organic carbon (TOC) concentrations before sanitizing finished water with halogenated / chlorinated disinfectants. [0003] Although various tools or instruments have been developed for monitoring TOC, on-line monitoring of TOC alone cannot provide the necessary information ab...

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Application Information

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IPC IPC(8): G01N21/31G01N21/33G01N21/64
CPCG01N21/31G01N21/314G01N21/33G01N21/645G01N21/85G01N2021/3155G01N2021/6484G01N2021/8411G01N2201/061G01N33/18
Inventor 亚当·马修·吉尔摩富冈纪一郎
Owner HORIBA INSTR
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