JPS555759A - Method and apparatus for continuous dehydration of less filterable sludge - Google Patents
Method and apparatus for continuous dehydration of less filterable sludgeInfo
- Publication number
- JPS555759A JPS555759A JP7968278A JP7968278A JPS555759A JP S555759 A JPS555759 A JP S555759A JP 7968278 A JP7968278 A JP 7968278A JP 7968278 A JP7968278 A JP 7968278A JP S555759 A JPS555759 A JP S555759A
- Authority
- JP
- Japan
- Prior art keywords
- cake
- sludge
- grooved rolls
- water content
- rolls
- 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
- Filtration Of Liquid (AREA)
Abstract
PURPOSE: To dehydrate efficiently and continuously less filterable sludge, by vacuum-dehydrating the sludge while transferring by negative press. applied to the inner side of the filter surface to form cracks in the cake, then by pressurizing and pressing immediately the cake by the rotation of grooved rolls.
CONSTITUTION: Sludge 15 subjected to pretreatment, e.g., concentration, digestion, and flocculation, is fed from a charging box 8 onto the filter cloth 6. While being transferred in the direction of an arrow in a layer on the filter cloth, the sludge 15 is freed from the liq. contained in thd sludge by the suction force due to the negative press. of a suction box 1. The water content of the cake 16 is decreased to form cracks. Just after the crack formation, the cake is pressed successively by grooved rolls A, B, C to crush the crack and increase the dehydration ratio. Thereafter, the cake is strongly pressed by two flat rolls, then by grooved rolls once again so as to loosen the cake, and by a flat roll F to produce finally sheet-like cake 16 of very low water content.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7968278A JPS555759A (en) | 1978-06-29 | 1978-06-29 | Method and apparatus for continuous dehydration of less filterable sludge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7968278A JPS555759A (en) | 1978-06-29 | 1978-06-29 | Method and apparatus for continuous dehydration of less filterable sludge |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS555759A true JPS555759A (en) | 1980-01-16 |
JPS5639924B2 JPS5639924B2 (en) | 1981-09-17 |
Family
ID=13696963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7968278A Granted JPS555759A (en) | 1978-06-29 | 1978-06-29 | Method and apparatus for continuous dehydration of less filterable sludge |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS555759A (en) |
-
1978
- 1978-06-29 JP JP7968278A patent/JPS555759A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5639924B2 (en) | 1981-09-17 |
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