JPS5624089A - Coagulation and sedimentation treatment of waste water of pulp mill - Google Patents
Coagulation and sedimentation treatment of waste water of pulp millInfo
- Publication number
- JPS5624089A JPS5624089A JP9810979A JP9810979A JPS5624089A JP S5624089 A JPS5624089 A JP S5624089A JP 9810979 A JP9810979 A JP 9810979A JP 9810979 A JP9810979 A JP 9810979A JP S5624089 A JPS5624089 A JP S5624089A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- sludge
- treated
- pulp mill
- salt
- 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)
Abstract
PURPOSE: To raise the efficiency of treatment of the waste water of the pulp mill by using a treated sludge containing regenerated coagulant, obtained by adding an acid liquid to the pulp sludge coagulated and sedimented by an inorganic Al salt, in the coagulation and sedimentation treatment of the waste water of the pulp mill.
CONSTITUTION: The waste water of the pulp mill 1 to be treated is introduced into a mixing tank 2, and the inorganic Al salt coagulant 3 is added to the waste water 1 and its pH is regulated to adsorb organics present in the waste water 1 on the flocs of Al(OH)3. Then, the treated waste water 4 is sent to a clarifier 5 to sediment and separate coagulates and then supernatant liquid 6 is neutralized and discharged. The sludge 7 is stored in a pit 8, and part of the sludge is sent to the acid liquid treatment tank 11 and the rest is dehydrated by a dehydrator 9 and then discarded or incinerated. The sludge 7 sent to a treatment tank 11 is mixed with pulp bleaching chlorate waste water 12 or waste acid 13 and treated at pH of approx. 3.5 or less. And, the Al salt is recovered by regeneration and the mixed liquid 14 containing the recovered Al salt and the sludge treated by acid liquid is mixed with the waste water of the pulp mill 1 for reuse.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9810979A JPS5624089A (en) | 1979-08-02 | 1979-08-02 | Coagulation and sedimentation treatment of waste water of pulp mill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9810979A JPS5624089A (en) | 1979-08-02 | 1979-08-02 | Coagulation and sedimentation treatment of waste water of pulp mill |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5624089A true JPS5624089A (en) | 1981-03-07 |
JPS6317511B2 JPS6317511B2 (en) | 1988-04-14 |
Family
ID=14211152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9810979A Granted JPS5624089A (en) | 1979-08-02 | 1979-08-02 | Coagulation and sedimentation treatment of waste water of pulp mill |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5624089A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01151990A (en) * | 1987-12-07 | 1989-06-14 | Oji Paper Co Ltd | Process for coagulating and precipitating waste water of paper and pulp |
JP2008055357A (en) * | 2006-08-31 | 2008-03-13 | Daio Paper Corp | Wastewater treatment method |
CN114105356A (en) * | 2021-11-18 | 2022-03-01 | 中国轻工业长沙工程有限公司 | Deep treatment process for papermaking by using waste paper |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05328567A (en) * | 1992-05-18 | 1993-12-10 | Nec Yamagata Ltd | Flexible conduit |
JP7345292B2 (en) * | 2019-06-25 | 2023-09-15 | 富士フイルムヘルスケア株式会社 | X-ray tomosynthesis device, image processing device, and program |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4965052A (en) * | 1972-10-24 | 1974-06-24 | ||
JPS523257A (en) * | 1975-06-25 | 1977-01-11 | Mitsubishi Heavy Ind Ltd | Recovery method for coagulant used in craftpulp waste water treatement |
-
1979
- 1979-08-02 JP JP9810979A patent/JPS5624089A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4965052A (en) * | 1972-10-24 | 1974-06-24 | ||
JPS523257A (en) * | 1975-06-25 | 1977-01-11 | Mitsubishi Heavy Ind Ltd | Recovery method for coagulant used in craftpulp waste water treatement |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01151990A (en) * | 1987-12-07 | 1989-06-14 | Oji Paper Co Ltd | Process for coagulating and precipitating waste water of paper and pulp |
JP2008055357A (en) * | 2006-08-31 | 2008-03-13 | Daio Paper Corp | Wastewater treatment method |
JP4502989B2 (en) * | 2006-08-31 | 2010-07-14 | 大王製紙株式会社 | Wastewater treatment method |
CN114105356A (en) * | 2021-11-18 | 2022-03-01 | 中国轻工业长沙工程有限公司 | Deep treatment process for papermaking by using waste paper |
CN114105356B (en) * | 2021-11-18 | 2024-02-06 | 中国轻工业长沙工程有限公司 | Advanced treatment process for waste paper making |
Also Published As
Publication number | Publication date |
---|---|
JPS6317511B2 (en) | 1988-04-14 |
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