JPS574300A - Dehydration treatment of sludge - Google Patents
Dehydration treatment of sludgeInfo
- Publication number
- JPS574300A JPS574300A JP7864680A JP7864680A JPS574300A JP S574300 A JPS574300 A JP S574300A JP 7864680 A JP7864680 A JP 7864680A JP 7864680 A JP7864680 A JP 7864680A JP S574300 A JPS574300 A JP S574300A
- Authority
- JP
- Japan
- Prior art keywords
- dehydration
- dehydrated
- sludge
- filter
- oxidizer
- 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
- 230000018044 dehydration Effects 0.000 title abstract 5
- 238000006297 dehydration reaction Methods 0.000 title abstract 5
- 239000010802 sludge Substances 0.000 title abstract 3
- 208000005156 Dehydration Diseases 0.000 title 1
- 239000000463 material Substances 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000000706 filtrate Substances 0.000 abstract 2
- 150000001455 metallic ions Chemical class 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 235000003891 ferrous sulphate Nutrition 0.000 abstract 1
- 239000011790 ferrous sulphate Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To improve the eluting rate of Fe, Al, etc. and make possible their reuse by adding an oxidizer and a metallic ion dissociating material to sludge contg. org. materials, then adding an alkali agent with a slight delay from the time for starting dehydration in a dehydrating process.
CONSTITUTION: After sludge 1 contg. org. materials is concd. in a concentrating process, it is added with hydrogen peroxide 3 which is an oxidizer, and ferrous sulfate 4 which is a material dissociating metallic ions in aqueous solution, in an agitating tank 2, and are allowed to cause oxidation reaction under acidic conditions of 2W3pH. Thence, it is dehydrated with a batch type dehydration filter 5 such as filter press, whereby it is separated to dehydrated filtrate 6 and dehydrated cake 7. In a dehydration process, an alkali agent 8 such as caustic soda is supplied to the filter 5 just before the end time of the dehydration filtration and ideally just after the same. Thereby, the dehydrated filtrate is recovered in an acid state and in a state that it is containing a large amount of Fe and Al, thus the dehydrated cake is made neutral.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7864680A JPS574300A (en) | 1980-06-11 | 1980-06-11 | Dehydration treatment of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7864680A JPS574300A (en) | 1980-06-11 | 1980-06-11 | Dehydration treatment of sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS574300A true JPS574300A (en) | 1982-01-09 |
Family
ID=13667621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7864680A Pending JPS574300A (en) | 1980-06-11 | 1980-06-11 | Dehydration treatment of sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS574300A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999037585A1 (en) * | 1998-01-22 | 1999-07-29 | Bayer Aktiengesellschaft | Conditioning method for dehydrating clarification sludge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5245582A (en) * | 1975-10-09 | 1977-04-11 | Tokai Denka Kogyo Kk | Solid-liquid separation method of organic waste fluid sludge |
| JPS54149258A (en) * | 1978-05-15 | 1979-11-22 | Kubota Ltd | Pretreatment method for sludge dehydration |
-
1980
- 1980-06-11 JP JP7864680A patent/JPS574300A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5245582A (en) * | 1975-10-09 | 1977-04-11 | Tokai Denka Kogyo Kk | Solid-liquid separation method of organic waste fluid sludge |
| JPS54149258A (en) * | 1978-05-15 | 1979-11-22 | Kubota Ltd | Pretreatment method for sludge dehydration |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999037585A1 (en) * | 1998-01-22 | 1999-07-29 | Bayer Aktiengesellschaft | Conditioning method for dehydrating clarification sludge |
| US6368511B1 (en) | 1998-01-22 | 2002-04-09 | Bayer Aktiengesellschaft | Conditioning method for dehydrating clarification sludge |
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