JPS571500A - Disposal of sludge - Google Patents
Disposal of sludgeInfo
- Publication number
- JPS571500A JPS571500A JP7453580A JP7453580A JPS571500A JP S571500 A JPS571500 A JP S571500A JP 7453580 A JP7453580 A JP 7453580A JP 7453580 A JP7453580 A JP 7453580A JP S571500 A JPS571500 A JP S571500A
- Authority
- JP
- Japan
- Prior art keywords
- effluent
- substance
- vessel
- dissocciating
- mixture
- 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 3
- 239000002184 metal Substances 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 238000001556 precipitation Methods 0.000 abstract 3
- 239000000126 substance Substances 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 2
- 239000011707 mineral Substances 0.000 abstract 2
- 230000003472 neutralizing effect Effects 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 239000006228 supernatant Substances 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229910000000 metal hydroxide Inorganic materials 0.000 abstract 1
- 150000004692 metal hydroxides Chemical class 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To reuse a metal ion-dissocciating substance, by adding an oxidizing agent and a metal ion-dissocciating substance into organic substance-contg. sludge, reacting the mixture in an acidic range, neutralizing the resulting effluent, and treating the formed precipitation with a mineral acid.
CONSTITUTION: Sludge 1 is mixed with a metal ion-dissocciating substance 3, such as a ferric salt, and an oxidizing agent 4, such as H2O2 (and sulfuric acid 9', if necessary) in an agitating vessel 2. The mixture is agitated at pH3-4 or so for a certain period. The mixture is then separated into dewatered cake 6 and an effluent 7 by a dehydrator 5. The effluent 7 is neutralized at pH5-8 or so by the addition of an alkali 9, such as a Mg compound or the like, in a neutralizing vessel 8. A high- molecular flocculant 10 may be added to the neutralized effluent, if necessary. The effluent is separated into a precipitation 13 mainly composed of metal hydroxides and a supernatant 12 in a sedimentation pool 11. The supernatant 12 is drained, while the precipitation 13 is adjusted at pH1.5 or so and dissolved by the addition of a mineral acid 15 in an acidic dissolution vessel 14. The dissolved liquid 16 is recycled to the vessel 2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7453580A JPS571500A (en) | 1980-06-03 | 1980-06-03 | Disposal of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7453580A JPS571500A (en) | 1980-06-03 | 1980-06-03 | Disposal of sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS571500A true JPS571500A (en) | 1982-01-06 |
Family
ID=13550071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7453580A Pending JPS571500A (en) | 1980-06-03 | 1980-06-03 | Disposal of sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS571500A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6082436U (en) * | 1983-11-14 | 1985-06-07 | トヨタ自動車株式会社 | automotive window glass |
| JPS6241740A (en) * | 1985-08-19 | 1987-02-23 | Nippon Sheet Glass Co Ltd | Production of heat-reflection glass |
| US5032429A (en) * | 1988-10-18 | 1991-07-16 | Degussa Aktiengesellschaft | Method of producing luminous decorations |
| US9591387B2 (en) | 2012-10-16 | 2017-03-07 | Eberspaecher Exhaust Technology Gmbh & Co. Kg | Loudspeaker with improved thermal load capacity |
-
1980
- 1980-06-03 JP JP7453580A patent/JPS571500A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6082436U (en) * | 1983-11-14 | 1985-06-07 | トヨタ自動車株式会社 | automotive window glass |
| JPH0214413Y2 (en) * | 1983-11-14 | 1990-04-19 | ||
| JPS6241740A (en) * | 1985-08-19 | 1987-02-23 | Nippon Sheet Glass Co Ltd | Production of heat-reflection glass |
| US5032429A (en) * | 1988-10-18 | 1991-07-16 | Degussa Aktiengesellschaft | Method of producing luminous decorations |
| US9591387B2 (en) | 2012-10-16 | 2017-03-07 | Eberspaecher Exhaust Technology Gmbh & Co. Kg | Loudspeaker with improved thermal load capacity |
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