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1. WO2022009481 - APPARATUS AND METHOD FOR CONTROLLING INJECTION OF COAGULANT IN WATER TREATMENT PLANT

Publication Number WO/2022/009481
Publication Date 13.01.2022
International Application No. PCT/JP2021/011425
International Filing Date 19.03.2021
IPC
B01D 21/01 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
01using flocculating agents
B01D 21/30 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
30Control equipment
C02F 1/52 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
52by flocculation or precipitation of suspended impurities
G01N 21/49 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
49within a body or fluid
Applicants
  • 栗田工業株式会社 KURITA WATER INDUSTRIES LTD. [JP]/[JP]
Inventors
  • 河原林 直也 KAWARABAYASHI, Naoya
Agents
  • 重野 剛 SHIGENO, Tsuyoshi
  • 重野 隆之 SHIGENO, Takayuki
Priority Data
2020-11723207.07.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) APPARATUS AND METHOD FOR CONTROLLING INJECTION OF COAGULANT IN WATER TREATMENT PLANT
(FR) APPAREIL ET PROCÉDÉ POUR COMMANDER L'INJECTION D'UN COAGULANT DANS UNE INSTALLATION DE TRAITEMENT D'EAU
(JA) 浄水場の凝集剤注入制御装置及び方法
Abstract
(EN) An apparatus for controlling the injection of a coagulant in a water treatment plant, the apparatus comprising: a flow meter for measuring the flow rate of raw water and/or a water quality tester for measuring the water quality of the raw water before the addition of a coagulant; a feedforward control means for performing the feedforward control of the quantity of the coagulant to be injected on the basis of a measurement value obtained by the flow meter and/or the water quality tester; a coagulation sensor for detecting the state of coagulation after the injection of the coagulant into the raw water; and a feedback control means for performing the feedback control of the quantity of the coagulant to be injected on the basis of a measurement value obtained by the coagulation sensor.
(FR) L'invention concerne un appareil pour commander l'injection d'un coagulant dans une installation de traitement de l'eau, l'appareil comprenant : un débitmètre pour mesurer le débit d'eau brute et/ou un testeur de qualité d'eau pour mesurer la qualité de l'eau de l'eau brute avant l'ajout d'un coagulant ; un moyen de commande prédictive pour effectuer la commande prédictive de la quantité du coagulant à injecter sur la base d'une valeur de mesure obtenue par le débitmètre et/ou le testeur de qualité d'eau ; un capteur de coagulation pour détecter l'état de coagulation après l'injection du coagulant dans l'eau brute ; et un moyen de commande de rétroaction pour effectuer la commande de rétroaction de la quantité du coagulant à injecter sur la base d'une valeur de mesure obtenue par le capteur de coagulation.
(JA) 原水の流量を測定する流量計及び/又は凝集剤を添加する前の原水の水質を測定する水質測定器、該流量計及び/又は水質測定器の測定値に基づいて凝集剤の注入量をフィードフォワード制御するフィードフォワード制御手段と、原水に凝集剤を注入した後の凝集状態を検出する凝集センサと、該凝集センサの測定値に基づいて凝集剤の注入量をフィードバック制御するフィードバック制御手段とを有する浄水場の凝集剤注入制御装置。
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