JPS5442362A - Sludge degydration method - Google Patents
Sludge degydration methodInfo
- Publication number
- JPS5442362A JPS5442362A JP10927477A JP10927477A JPS5442362A JP S5442362 A JPS5442362 A JP S5442362A JP 10927477 A JP10927477 A JP 10927477A JP 10927477 A JP10927477 A JP 10927477A JP S5442362 A JPS5442362 A JP S5442362A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- dehydration
- added
- hydrochloric acid
- percentage
- 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
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To obtain a cake with a stabilized percentage of water content while attaining a greater dehydration efficiency through dehydration of sludge with hydrochloric acid added thereto in treating a waste water such as urine, sewage, industrial organic waste water or the like.
CONSTITUTION: Hydrochloric acid 2 is added to a sludge 1 to a sludge 1 to perform pH control. Then, FeCl3 3 is added to the sludge thus pH-controlled, whereby flocks with a stabilized size and strength are obtained, while the dehydration load per uit weight can be reduced per the same sludge quantity as compared with the conventinal method by addition of Ca salt. In this manner, the filtration speed is improve substantially thus heightening the dehydration efficiency by a hydroextrator 4. In addition, a dehydration dehydratcake with a stablilized percentage of water content can be yielded. The amount of hydrochloric acid to be added is 3.0W13.0% less than the conventioanl method, thus reducing running cost of the chemicals.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52109274A JPS5837040B2 (en) | 1977-09-10 | 1977-09-10 | Sludge dewatering method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52109274A JPS5837040B2 (en) | 1977-09-10 | 1977-09-10 | Sludge dewatering method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5442362A true JPS5442362A (en) | 1979-04-04 |
JPS5837040B2 JPS5837040B2 (en) | 1983-08-13 |
Family
ID=14506004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52109274A Expired JPS5837040B2 (en) | 1977-09-10 | 1977-09-10 | Sludge dewatering method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5837040B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5898198A (en) * | 1981-12-07 | 1983-06-10 | Ebara Infilco Co Ltd | Treatment of sewage sludge |
JPS58143900A (en) * | 1982-02-22 | 1983-08-26 | Ebara Infilco Co Ltd | Treatment of organic sludge |
WO2002092520A1 (en) * | 2001-05-14 | 2002-11-21 | Japan Institute Of Wastewater Engineering Technology | Sludge concentrating method and device |
-
1977
- 1977-09-10 JP JP52109274A patent/JPS5837040B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5898198A (en) * | 1981-12-07 | 1983-06-10 | Ebara Infilco Co Ltd | Treatment of sewage sludge |
JPS58143900A (en) * | 1982-02-22 | 1983-08-26 | Ebara Infilco Co Ltd | Treatment of organic sludge |
JPH0247279B2 (en) * | 1982-02-22 | 1990-10-19 | Ebara Infilco | |
WO2002092520A1 (en) * | 2001-05-14 | 2002-11-21 | Japan Institute Of Wastewater Engineering Technology | Sludge concentrating method and device |
US7029580B2 (en) | 2001-05-14 | 2006-04-18 | Kiyoshi Suzuki | Apparatus for concentrating sludge |
Also Published As
Publication number | Publication date |
---|---|
JPS5837040B2 (en) | 1983-08-13 |
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