JPS5710399A - Concentrating and dehydrating method for sludge generated from city water purification plant - Google Patents
Concentrating and dehydrating method for sludge generated from city water purification plantInfo
- Publication number
- JPS5710399A JPS5710399A JP8275280A JP8275280A JPS5710399A JP S5710399 A JPS5710399 A JP S5710399A JP 8275280 A JP8275280 A JP 8275280A JP 8275280 A JP8275280 A JP 8275280A JP S5710399 A JPS5710399 A JP S5710399A
- Authority
- JP
- Japan
- Prior art keywords
- slaked lime
- sludge
- tank
- liquid
- concentrating
- 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
Landscapes
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To easily obtain filterable concentrated sludge at low cost by adding slaked lime to concentrated sludge, mixing for 15W30min, and after allowing to leave the same for 2W3hr as it is, neutralizing to pH7W8, adding 10W50% DS slaked lime and dehydrating.
CONSTITUTION: In a sludge conditioning tank 6, 10 DS slaked lime is added to concentrated sludge discharged from a pressure floating tank 5 and mixed up for about 30min. After allowing to stand for 2W3hr, it is neutralized with sulfuric acid, hydrochloric acid etc. A part of supernatant liquid of the slime is returned to a conditioning tank 4 to use the liquid as an or-ganic flocculant. The neutralized sludge liquid is led to a slaked lime adding tank 7, and 10W50% DS slaked lime is added. The reconditioned sludge is filtered with a vacuum filter 8 of belt discharge system. By this way, the water content of cake is made to ≤50% and becomes dry.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8275280A JPS5710399A (en) | 1980-06-20 | 1980-06-20 | Concentrating and dehydrating method for sludge generated from city water purification plant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8275280A JPS5710399A (en) | 1980-06-20 | 1980-06-20 | Concentrating and dehydrating method for sludge generated from city water purification plant |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5710399A true JPS5710399A (en) | 1982-01-19 |
Family
ID=13783159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8275280A Pending JPS5710399A (en) | 1980-06-20 | 1980-06-20 | Concentrating and dehydrating method for sludge generated from city water purification plant |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5710399A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104386899A (en) * | 2014-03-13 | 2015-03-04 | 南京道科环境科技有限公司 | Efficient automatic control method for sludge deep dehydration |
-
1980
- 1980-06-20 JP JP8275280A patent/JPS5710399A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104386899A (en) * | 2014-03-13 | 2015-03-04 | 南京道科环境科技有限公司 | Efficient automatic control method for sludge deep dehydration |
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