公开(公告)号：US20240317609A1

公开(公告)日：2024-09-26

申请号：US18269713

申请日：2022-02-04

Applicant: Hitachi, Ltd.

Inventor： Jun TANAKA ,  Yasuko KOBAYASHI ,  Takuya KAMBAYASHI ,  Daisuke YAGI ,  Makiko UDAGAWA ,  Kotaro KITAMURA ,  Hiroki MIYAKAWA

IPC: C02F1/00 ,  C02F11/147

CPC classification number: C02F1/008 ,  C02F11/147 ,  C02F2209/006 ,  C02F2209/008 ,  C02F2209/02 ,  C02F2209/44

Abstract: A sludge treatment facility operation assistance navigation system acquires an operating flock state that is a flocculation flock state during operation of a sludge treatment facility, acquires an operating sludge water content that is a water content of dehydrated sludge during operation of the sludge treatment facility, selects or generates facility operation contents of a flocculation tank and a sludge dehydrator based on the operating flock state, the operating sludge water content, a desired flocculation flock state, and a desired sludge water content, and displays the facility operation contents on a display device.

公开(公告)号：US20240102925A1

公开(公告)日：2024-03-28

申请号：US18274583

申请日：2021-11-30

Applicant: Hitachi, Ltd.

Inventor： Yasuko KOBAYASHI ,  Jun TANAKA ,  Takuya KAMBAYASHI ,  Yusuke KAGA ,  Shunsuke KONO ,  Kotaro KITAMURA ,  Makiko UDAGAWA ,  Hiroki MIYAKAWA

IPC: G01N21/3554 ,  C02F1/00 ,  C02F11/12

CPC classification number: G01N21/3554 ,  C02F1/008 ,  C02F11/12 ,  C02F2209/006 ,  G01N2201/12753

Abstract: A moisture content measurement method that calculates moisture content of dehydrated sludge using a calibration curve for calculating the moisture content of the dehydrated sludge, the calibration curve being obtained by performing multivariate regression analysis after first-order differential processing or an offset correction is performed on absorbance for reflected light or reflectance for infrared rays from dehydrated sludge, the absorbance or the reflectance being obtained by measuring the dehydrated sludge using an infrared measurement apparatus provided with a light-receiving unit that can receive at least infrared rays reflected from a target object to be measured and a light source that has a plurality of infrared LEDs that can emit infrared rays having respectively different wavelengths or a light source having an infrared-region tungsten lamp or halogen lamp.