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JPS5499084A - Pretreating method for waste liquid treatment by reverse osmosis process - Google Patents

Pretreating method for waste liquid treatment by reverse osmosis process

Info

Publication number
JPS5499084A
JPS5499084A JP602378A JP602378A JPS5499084A JP S5499084 A JPS5499084 A JP S5499084A JP 602378 A JP602378 A JP 602378A JP 602378 A JP602378 A JP 602378A JP S5499084 A JPS5499084 A JP S5499084A
Authority
JP
Japan
Prior art keywords
waste liquid
alkaline agent
adding alkaline
cohered
precipitated
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
JP602378A
Other languages
Japanese (ja)
Inventor
Takashi Suzuki
Reiji Sato
Hiroo Kato
Takashi Iori
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.)
Electric Power Development Co Ltd
Sumitomo Heavy Industries Ltd
Original Assignee
Electric Power Development Co Ltd
Sumitomo Heavy Industries 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 Electric Power Development Co Ltd, Sumitomo Heavy Industries Ltd filed Critical Electric Power Development Co Ltd
Priority to JP602378A priority Critical patent/JPS5499084A/en
Publication of JPS5499084A publication Critical patent/JPS5499084A/en
Pending legal-status Critical Current

Links

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Abstract

PURPOSE: To surely carry out the above treatment without increasing the quantity of chemicals and to enable to carry out stable operation of reverse osmosis apparatus, by making pH of waste liquid at a specific value by adding alkaline agent and removing Al3+ and F- by precipitation and moreover, removing and precipitating Ca2+ by adding alkaline agent contained carbonate salt.
CONSTITUTION: pH of waste liquid is regulated at 7W9 by adding alkaline agent, such as NaOH etc. and dissolved Al3+ is cohered and precipitated as Al(OH)3 and also, F- is cohered and precipitated as CaF2. On this occasion, sedimentation is accelerated and clear treating water is able to obtain, by using high molecular flocculant. Also, a large part of SiO2 and suspension material, are removed by cohering and precipitating operation. Next, pH is regulated at 9W11 by adding alkaline agent contained carbonate salt, for example, Na2CO3 and NaOH and Ca2+ is cohered and precipitated as CaCO3 mainly. At this time, high molecular flocculant is able to use.
COPYRIGHT: (C)1979,JPO&Japio
JP602378A 1978-01-23 1978-01-23 Pretreating method for waste liquid treatment by reverse osmosis process Pending JPS5499084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP602378A JPS5499084A (en) 1978-01-23 1978-01-23 Pretreating method for waste liquid treatment by reverse osmosis process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP602378A JPS5499084A (en) 1978-01-23 1978-01-23 Pretreating method for waste liquid treatment by reverse osmosis process

Publications (1)

Publication Number Publication Date
JPS5499084A true JPS5499084A (en) 1979-08-04

Family

ID=11627078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP602378A Pending JPS5499084A (en) 1978-01-23 1978-01-23 Pretreating method for waste liquid treatment by reverse osmosis process

Country Status (1)

Country Link
JP (1) JPS5499084A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006204977A (en) * 2005-01-25 2006-08-10 Kurita Water Ind Ltd Method and apparatus for treating biologically treated water-containing water

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134589A (en) * 1973-04-30 1974-12-25
JPS5193789A (en) * 1975-02-14 1976-08-17 HAIEKISHORIHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134589A (en) * 1973-04-30 1974-12-25
JPS5193789A (en) * 1975-02-14 1976-08-17 HAIEKISHORIHOHO

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006204977A (en) * 2005-01-25 2006-08-10 Kurita Water Ind Ltd Method and apparatus for treating biologically treated water-containing water
JP4655643B2 (en) * 2005-01-25 2011-03-23 栗田工業株式会社 Biologically treated water-containing water treatment method and treatment apparatus

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