JPS5556885A - Treatment method for pulp mill waste water - Google Patents
Treatment method for pulp mill waste waterInfo
- Publication number
- JPS5556885A JPS5556885A JP12990378A JP12990378A JPS5556885A JP S5556885 A JPS5556885 A JP S5556885A JP 12990378 A JP12990378 A JP 12990378A JP 12990378 A JP12990378 A JP 12990378A JP S5556885 A JPS5556885 A JP S5556885A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- waste water
- pulp mill
- mill waste
- coagulating sedimentation
- 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
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Paper (AREA)
Abstract
PURPOSE: To reduce the amount of sludge by using effectively coagulant by the procedure in which a soluble ferrous salt is used as a coagulant in the treatment of pulp mill waste water by a coagulating sedimentation method and then recovered from formed sludge for reuse.
CONSTITUTION: A soluble ferrous salt, e.g., ferrous sulfate, ferrous chloride, etc., and an alkali, e.g., a hydroxide, carbonate, etc., of Na, K, Ca, etc., are added to the pulp mill waste water for a coagulating sedimentation treatemnt, and then formed sludge is separated from supernatant by a sedimenting separation method. The pH of the sludge is regulated to 4.5W5.5 by the addition of a mineral acid, e.g., sulfuric acid, hydrochloric acid, etc., in order to dissolve acid-soluble components. Thus, iron content of the ferrous salt used in the previous process can be recovered in high yield and then reused in coagulating sedimentation treatment. Also, the amount of sludge can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12990378A JPS5556885A (en) | 1978-10-20 | 1978-10-20 | Treatment method for pulp mill waste water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12990378A JPS5556885A (en) | 1978-10-20 | 1978-10-20 | Treatment method for pulp mill waste water |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5556885A true JPS5556885A (en) | 1980-04-26 |
JPS6260150B2 JPS6260150B2 (en) | 1987-12-15 |
Family
ID=15021230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12990378A Granted JPS5556885A (en) | 1978-10-20 | 1978-10-20 | Treatment method for pulp mill waste water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5556885A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100226514B1 (en) * | 1997-05-03 | 1999-10-15 | 이종달 | Method for the treatment of pulp industrial waste water |
KR20030079445A (en) * | 2002-04-04 | 2003-10-10 | 삼성정밀화학 주식회사 | A waste-water treatment method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49122153A (en) * | 1973-03-28 | 1974-11-21 |
-
1978
- 1978-10-20 JP JP12990378A patent/JPS5556885A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49122153A (en) * | 1973-03-28 | 1974-11-21 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100226514B1 (en) * | 1997-05-03 | 1999-10-15 | 이종달 | Method for the treatment of pulp industrial waste water |
KR20030079445A (en) * | 2002-04-04 | 2003-10-10 | 삼성정밀화학 주식회사 | A waste-water treatment method |
Also Published As
Publication number | Publication date |
---|---|
JPS6260150B2 (en) | 1987-12-15 |
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