Title:
NEUTRALIZATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/199202
Kind Code:
A1
Abstract:
A neutralization device 100 comprises: a neutralization section 110 provided with an inflow port 212 and a discharge port 214; a wastewater supply section (pump) 120 that supplies wastewater to the neutralization section 110 through the inflow port 212; a bubbling section 130 that supplies bubbles of carbon dioxide having an average diameter of 2.5 mm or less to the wastewater accommodated in the neutralization section 110; a first pH sensor 140 provided between the inflow port 212 and the discharge port 214 in the neutralization section 110; a second pH sensor 150 provided between the discharge port 214 and the location in the neutralization section 110 where the first pH sensor 140 is installed; and a control unit 160 that, on the basis of the measurement value(s) of either one or both of the first pH sensor 140 and the second pH sensor 150, controls the amount of carbon dioxide supplied by the bubbling section 130.
Inventors:
HAMAGUCHI KENICHI (JP)
YOSHIDA YUKA (JP)
YOSHIDA YUKA (JP)
Application Number:
PCT/JP2020/014672
Publication Date:
October 07, 2021
Filing Date:
March 30, 2020
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
C02F1/66
Foreign References:
| KR101958754B1 | 2019-03-18 | |||
| JP2015003299A | 2015-01-08 | |||
| JPS51122955A | 1976-10-27 | |||
| JPH08168781A | 1996-07-02 | |||
| JP2014036950A | 2014-02-27 | |||
| JP2008194657A | 2008-08-28 |
Attorney, Agent or Firm:
AOMI PATENT (JP)
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