Title:
FLOCCULATION PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/017637
Kind Code:
A1
Abstract:
Provided is a flocculation processing device that controls chemical feeding on the basis of a flocculation state monitoring sensor and makes is possible to accurately control the addition amount of a flocculant while taking into account the color and quantity of particles. The flocculant is added to a flocculation tank 3 by a chemical-feeding device 4. A detection signal from a flocculation state monitoring sensor 10 provided in a flocculation device 3 is input into a controller 8, and the chemical-feeding device 4 is controlled. The flocculation state monitoring sensor 10 comprises: a light-emitting unit that irradiates laser light toward a flocculation treatment liquid; and a light-receiving unit in which the light-receiving optical axis is orthogonal to the light-emitting optical axis of the light-emitting unit. A light-reception signal intensity is used to correct a light-reception signal intensity variation width, and a floc formation state is determined on the basis of the corrected value of the light-reception signal intensity variation width.
Inventors:
INOUE KEN (JP)
NAGAO NOBUAKI (JP)
SUZUKI MIZUKI (JP)
NAGAO NOBUAKI (JP)
SUZUKI MIZUKI (JP)
Application Number:
PCT/JP2022/011660
Publication Date:
February 16, 2023
Filing Date:
March 15, 2022
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
B01D21/01; B01D21/30; G01N15/06
Foreign References:
| JP2017026438A | 2017-02-02 | |||
| JP2017121601A | 2017-07-13 | |||
| KR20190055840A | 2019-05-23 | |||
| JP2021099222A | 2021-07-01 | |||
| JP2005241338A | 2005-09-08 | |||
| JP2002195947A | 2002-07-10 | |||
| JP6281534B2 | 2018-02-21 | |||
| JP2021131205A | 2021-09-09 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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