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JPS56115695A - Chemical dosage control unit in sludge treatment process - Google Patents

Chemical dosage control unit in sludge treatment process

Info

Publication number
JPS56115695A
JPS56115695A JP1915580A JP1915580A JPS56115695A JP S56115695 A JPS56115695 A JP S56115695A JP 1915580 A JP1915580 A JP 1915580A JP 1915580 A JP1915580 A JP 1915580A JP S56115695 A JPS56115695 A JP S56115695A
Authority
JP
Japan
Prior art keywords
chemical
viscosity
sludge
tank
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1915580A
Other languages
Japanese (ja)
Other versions
JPS625040B2 (en
Inventor
Kenji Baba
Shoji Watanabe
Yoshimasa Asada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1915580A priority Critical patent/JPS56115695A/en
Publication of JPS56115695A publication Critical patent/JPS56115695A/en
Publication of JPS625040B2 publication Critical patent/JPS625040B2/ja
Granted legal-status Critical Current

Links

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To enable always optimum chemical dosing to be accomplished by detecting the viscosity of a suspension contg. sludge and deciding the flocculation performance.
CONSTITUTION: If the viscosity of the predetermined concn. sludge from, for example, a municipal sewer treatment plant is measured while ferric chloride which is a flocculant is being dosed thereto, the viscosity decrease gradient changes at a chemical dosing rate 5% as shown in the figure. The suspension 2 contg. sludge in a flocculating-and mixing tank 1 is agitated by agitating paddles 4. On the other hand, the chemical 6 in a storage tank 5 is supplied at a constant speed by a pump 7 into the tank 1. In the tank 1, the liquid 2 is flocculated by the chemical 6 to form flocs. The viscosity of the liquid 2 is measured with a viscosimeter 8, and the measured value is sent to a control unit 9 which stops the dosing of the chemical 6 at the instant when the viscosity change speed gradient changes. At this instant, the flocs grow markedly, and therefore only the necessary amount of the chemical is used.
COPYRIGHT: (C)1981,JPO&Japio
JP1915580A 1980-02-20 1980-02-20 Chemical dosage control unit in sludge treatment process Granted JPS56115695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1915580A JPS56115695A (en) 1980-02-20 1980-02-20 Chemical dosage control unit in sludge treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1915580A JPS56115695A (en) 1980-02-20 1980-02-20 Chemical dosage control unit in sludge treatment process

Publications (2)

Publication Number Publication Date
JPS56115695A true JPS56115695A (en) 1981-09-10
JPS625040B2 JPS625040B2 (en) 1987-02-03

Family

ID=11991519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1915580A Granted JPS56115695A (en) 1980-02-20 1980-02-20 Chemical dosage control unit in sludge treatment process

Country Status (1)

Country Link
JP (1) JPS56115695A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62234599A (en) * 1986-04-02 1987-10-14 Masataka Sugawara Device for flocculating sludge in water treatment
WO2015053066A1 (en) * 2013-10-09 2015-04-16 株式会社日立製作所 Water treatment system
WO2016111324A1 (en) * 2015-01-09 2016-07-14 水ｉｎｇ株式会社 Organic sludge treatment method and treatment device
CN110261265A (en) * 2019-06-25 2019-09-20 成都建工赛利混凝土有限公司 Flocculant detection method and its detection device in a kind of sand
JP2022512049A (en) * 2018-10-29 2022-02-02 シーディーイー グローバル リミテッド Methods and equipment to reduce the water content of wastewater sludge
CN116655214A (en) * 2023-08-01 2023-08-29 北京环球中科水务科技股份有限公司 Sludge conditioning method, device, electronic equipment and storage medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02126786U (en) * 1989-03-24 1990-10-18

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62234599A (en) * 1986-04-02 1987-10-14 Masataka Sugawara Device for flocculating sludge in water treatment
WO2015053066A1 (en) * 2013-10-09 2015-04-16 株式会社日立製作所 Water treatment system
US20160214875A1 (en) * 2013-10-09 2016-07-28 Hitachi, Ltd. Water treatment system
WO2016111324A1 (en) * 2015-01-09 2016-07-14 水ｉｎｇ株式会社 Organic sludge treatment method and treatment device
JPWO2016111324A1 (en) * 2015-01-09 2017-10-12 水ｉｎｇ株式会社 Organic sludge treatment method and treatment equipment
JP2022512049A (en) * 2018-10-29 2022-02-02 シーディーイー グローバル リミテッド Methods and equipment to reduce the water content of wastewater sludge
CN110261265A (en) * 2019-06-25 2019-09-20 成都建工赛利混凝土有限公司 Flocculant detection method and its detection device in a kind of sand
CN116655214A (en) * 2023-08-01 2023-08-29 北京环球中科水务科技股份有限公司 Sludge conditioning method, device, electronic equipment and storage medium

Also Published As

Publication number Publication date
JPS625040B2 (en) 1987-02-03

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