JPS5787900A - Treatment of purification plant sludge - Google Patents
Treatment of purification plant sludgeInfo
- Publication number
- JPS5787900A JPS5787900A JP55165001A JP16500180A JPS5787900A JP S5787900 A JPS5787900 A JP S5787900A JP 55165001 A JP55165001 A JP 55165001A JP 16500180 A JP16500180 A JP 16500180A JP S5787900 A JPS5787900 A JP S5787900A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- mixed
- added
- mixing vessel
- acid
- 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
Links
- 239000010802 sludge Substances 0.000 title abstract 17
- 238000000746 purification Methods 0.000 title abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 6
- 239000002253 acid Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- ONBQEOIKXPHGMB-VBSBHUPXSA-N 1-[2-[(2s,3r,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-4,6-dihydroxyphenyl]-3-(4-hydroxyphenyl)propan-1-one Chemical compound O[C@@H]1[C@H](O)[C@@H](CO)O[C@H]1OC1=CC(O)=CC(O)=C1C(=O)CCC1=CC=C(O)C=C1 ONBQEOIKXPHGMB-VBSBHUPXSA-N 0.000 abstract 1
- 238000010306 acid treatment Methods 0.000 abstract 1
- 229940126142 compound 16 Drugs 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
Abstract
PURPOSE: To improve dehydration efficiency and control the pH to dehydrated cake to neutral by adding untreated sludge to acid treated sludge then controlling the pH of the mixed sludge to ≤4 and further adding an Mg compound thereto thence controlling the pH of the mixed sludge to 8W10.
CONSTITUTION: Part of purification plant sludge 1 is fed to a sulfuric acid mixing vessel 12, where sulfuric acid 6 is added to the sludge and these are mixed with a stirrer 10, after which the mixed sludge is introduced into an acid treating and settling vessel 8, where it is settled and concd. Acid treatment sludge 2 is introduced into a sludge mixing vessel 11, where it is mixed with the untreated sludge 1, after which the mixed sludge 23 is introduced into the vessel 12, where sulfuric acid 6 is added to control the pH of the mixed sludge to ≤4.0. Thence, the sludge is fed to an Mg compound mixing vessel 13 where an Mg compound 16 is added thereto. This sludge is introduced into an alkaline agent mixing vessel 14 and is added with an alkaline agent 18, whereby the pH of the mixed sludge is controlled to 8W10. The sludge after the pH control is dehydrated with a dehydrator 21, and dehydrated cake 3 is discharged.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165001A JPS5787900A (en) | 1980-11-22 | 1980-11-22 | Treatment of purification plant sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165001A JPS5787900A (en) | 1980-11-22 | 1980-11-22 | Treatment of purification plant sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5787900A true JPS5787900A (en) | 1982-06-01 |
Family
ID=15803954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55165001A Pending JPS5787900A (en) | 1980-11-22 | 1980-11-22 | Treatment of purification plant sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5787900A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0658828A (en) * | 1992-08-11 | 1994-03-04 | Noriji Kaeba | Method and apparatus for measuring earth pressure |
| WO1999057078A1 (en) * | 1998-04-30 | 1999-11-11 | Barbara Maria Czarnecka | Method for producing solid fertilizer from organic sewage sediment |
| JP2009142744A (en) * | 2007-12-13 | 2009-07-02 | Matsuo Kiki Sangyo Kk | Sludge concentration method and sludge concentration apparatus |
| EP2653456A1 (en) * | 2012-04-18 | 2013-10-23 | Bio Technology Sp. z o.o. | The method of obtaining the mineral-organic fertilizer from waste agricultural biogas digestate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133076A (en) * | 1976-04-30 | 1977-11-08 | Toyo Soda Mfg Co Ltd | Reforming of aluminium sludge |
| JPS52139239A (en) * | 1976-05-14 | 1977-11-21 | Ruhrkohle Ag | Method of shrouding chamber and subway with frame and its device |
-
1980
- 1980-11-22 JP JP55165001A patent/JPS5787900A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133076A (en) * | 1976-04-30 | 1977-11-08 | Toyo Soda Mfg Co Ltd | Reforming of aluminium sludge |
| JPS52139239A (en) * | 1976-05-14 | 1977-11-21 | Ruhrkohle Ag | Method of shrouding chamber and subway with frame and its device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0658828A (en) * | 1992-08-11 | 1994-03-04 | Noriji Kaeba | Method and apparatus for measuring earth pressure |
| WO1999057078A1 (en) * | 1998-04-30 | 1999-11-11 | Barbara Maria Czarnecka | Method for producing solid fertilizer from organic sewage sediment |
| JP2009142744A (en) * | 2007-12-13 | 2009-07-02 | Matsuo Kiki Sangyo Kk | Sludge concentration method and sludge concentration apparatus |
| EP2653456A1 (en) * | 2012-04-18 | 2013-10-23 | Bio Technology Sp. z o.o. | The method of obtaining the mineral-organic fertilizer from waste agricultural biogas digestate |
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