JPS5765384A - Neutralization of alkaline waste water - Google Patents

Neutralization of alkaline waste water

Info

Publication number
JPS5765384A
JPS5765384A JP14034580A JP14034580A JPS5765384A JP S5765384 A JPS5765384 A JP S5765384A JP 14034580 A JP14034580 A JP 14034580A JP 14034580 A JP14034580 A JP 14034580A JP S5765384 A JPS5765384 A JP S5765384A
Authority
JP
Japan
Prior art keywords
water
waste water
gas
value
drain pipe
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.)
Pending
Application number
JP14034580A
Other languages
Japanese (ja)
Inventor
Hironori Kubota
Kuniyoshi Sakane
Nobunao Murakami
Munehisa Nakagawa
Tadayoshi Nakai
Haruo Matsuo
Shuzo Furuta
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.)
Takenaka Komuten Co Ltd
Original Assignee
Takenaka Komuten Co 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 Takenaka Komuten Co Ltd filed Critical Takenaka Komuten Co Ltd
Priority to JP14034580A priority Critical patent/JPS5765384A/en
Publication of JPS5765384A publication Critical patent/JPS5765384A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To efficiently neutralize alkaline waste water at a low cost, when the alkaline waste water is neutralized with acidic gas, by adding a proper amount of the acidic gas to the waste water under a presuirzed condition in a drain pipe, while measuring the pH value of the waste water, and then sufficiently mixing the waste water with the acidic gas.
CONSTITUTION: Alkaline waste liquid, e.g. waste concrete liquid, is forcedly fed into a drain pipe 1 by a pump P. The pH value of the waste liquid is detected by a pH detector 5 arranged on the way of the drain pipe 1, the detected value is fed into a pH indicating and regulating device 7 and a pH controller 8 to operate electromagnetic valves 4 arranged in CO2 gas-feed pipes 3 from a liquiefied carbonic acid gas bomb 2, and CO2 gas necessary for neutralization is added to the alkaline waste water in the drain pipe 1. The CO2 gas is rapidly reacted with the alkaline waster water in the drain pipe 1 under a pressurized condition to form water-soluble Ca(HCO3)2 without generation of water-insoluble CaCO3, and the water is neutralized. Thereafter, the water is sufficiently mixed and racted with a paddle mixer 15, and its pH value is detected with a pH detector 6 again. By the detected value are controlled the electromagnetic valves 4 of the CO2 gas-feed pipes 3, to readjust the pH value of the waste water before flowing into the mixer 15.
COPYRIGHT: (C)1982,JPO&Japio
JP14034580A 1980-10-06 1980-10-06 Neutralization of alkaline waste water Pending JPS5765384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14034580A JPS5765384A (en) 1980-10-06 1980-10-06 Neutralization of alkaline waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14034580A JPS5765384A (en) 1980-10-06 1980-10-06 Neutralization of alkaline waste water

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP5210883A Division JPS58174287A (en) 1983-03-28 1983-03-28 Neutralyzing device for waste alkali water

Publications (1)

Publication Number Publication Date
JPS5765384A true JPS5765384A (en) 1982-04-20

Family

ID=15266661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14034580A Pending JPS5765384A (en) 1980-10-06 1980-10-06 Neutralization of alkaline waste water

Country Status (1)

Country Link
JP (1) JPS5765384A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100350688B1 (en) * 1999-10-30 2002-08-30 현대건설주식회사 Cement waste water treatment system
JP2003136073A (en) * 2001-11-01 2003-05-13 Miura Co Ltd Neutralizing method and neutralizing apparatus
JP2014036950A (en) * 2013-04-25 2014-02-27 Ihi Corp Neutralization device and neutralization method
JP2014213479A (en) * 2013-04-23 2014-11-17 大阪生コン物流事業協同組合 Water for concrete production, and method for producing the same
WO2018111855A1 (en) * 2016-12-14 2018-06-21 Mackrodt Basil Wastewater treatment system and method
JP2019195766A (en) * 2018-05-09 2019-11-14 株式会社アクティオ Neutralization treatment device and neutralization treatment method for construction waste water
CN113651454A (en) * 2021-08-26 2021-11-16 宁夏赛福质量检测技术有限公司 Waste acid liquid collecting and processing device for agricultural product quality safety detection laboratory

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100350688B1 (en) * 1999-10-30 2002-08-30 현대건설주식회사 Cement waste water treatment system
JP2003136073A (en) * 2001-11-01 2003-05-13 Miura Co Ltd Neutralizing method and neutralizing apparatus
JP2014213479A (en) * 2013-04-23 2014-11-17 大阪生コン物流事業協同組合 Water for concrete production, and method for producing the same
JP2014036950A (en) * 2013-04-25 2014-02-27 Ihi Corp Neutralization device and neutralization method
WO2018111855A1 (en) * 2016-12-14 2018-06-21 Mackrodt Basil Wastewater treatment system and method
JP2019195766A (en) * 2018-05-09 2019-11-14 株式会社アクティオ Neutralization treatment device and neutralization treatment method for construction waste water
CN113651454A (en) * 2021-08-26 2021-11-16 宁夏赛福质量检测技术有限公司 Waste acid liquid collecting and processing device for agricultural product quality safety detection laboratory

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