JPS5476482A - Dewatering method for organic sludge - Google Patents
Dewatering method for organic sludgeInfo
- Publication number
- JPS5476482A JPS5476482A JP14338077A JP14338077A JPS5476482A JP S5476482 A JPS5476482 A JP S5476482A JP 14338077 A JP14338077 A JP 14338077A JP 14338077 A JP14338077 A JP 14338077A JP S5476482 A JPS5476482 A JP S5476482A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- froth
- polymer
- pressure floatation
- organic
- 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
- 239000010802 sludge Substances 0.000 title abstract 9
- 229920000642 polymer Polymers 0.000 abstract 6
- 150000001768 cations Chemical class 0.000 abstract 4
- 239000002351 wastewater Substances 0.000 abstract 3
- 239000012141 concentrate Substances 0.000 abstract 2
- 230000018044 dehydration Effects 0.000 abstract 2
- 238000006297 dehydration reaction Methods 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 230000007423 decrease Effects 0.000 abstract 1
Landscapes
- Physical Water Treatments (AREA)
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To perform dewatering described in the title efficiently and economically, by pouring organic high-polymer flocculant not less than a specific amount excess on the basis of the solid sludge into waste water in order to aggregate and concentrate the sludge through pressure floatation, and by dewatering the concentrated sludge as it is.
CONSTITUTION: At the time of concentration through pressure floatation of organic sludge, e.g., the first-sedimentation-pond sludge, surplus activated sludge formed in organic waste-water-treating plant, or a mixt. of these sludges, a cation polymer, which is an organic high-polymer flocculant, not less than 0.3 wt.% excess on the basis of solid sludge, is poured into the waste water in order to aggregate and concentrate the sludge through pressure floatation. I.e., the cation polymer in an amount more than that used in usual pressure floatation concentration, together with cation polymer which is to be used in dehydration of froth, is poured into the waste water. The froth is dehydrated as it is by means of a suitable dehydrator. Because the froth is not diluted with the cation polymer soln. during dehydration, the dehydrator is operated simply without decline in its capacity.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52143380A JPS5953117B2 (en) | 1977-11-30 | 1977-11-30 | Organic sludge dewatering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52143380A JPS5953117B2 (en) | 1977-11-30 | 1977-11-30 | Organic sludge dewatering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5476482A true JPS5476482A (en) | 1979-06-19 |
| JPS5953117B2 JPS5953117B2 (en) | 1984-12-22 |
Family
ID=15337421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52143380A Expired JPS5953117B2 (en) | 1977-11-30 | 1977-11-30 | Organic sludge dewatering method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5953117B2 (en) |
-
1977
- 1977-11-30 JP JP52143380A patent/JPS5953117B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5953117B2 (en) | 1984-12-22 |
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