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JPS5442362A - Sludge degydration method - Google Patents

Sludge degydration method

Info

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
Application number
JP10927477A
Other languages
Japanese (ja)
Other versions
JPS5837040B2 (en
Inventor
Ichiro Nakano
Ryoichi Morimine
Kazuo Inushima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP52109274A priority Critical patent/JPS5837040B2/en
Publication of JPS5442362A publication Critical patent/JPS5442362A/en
Publication of JPS5837040B2 publication Critical patent/JPS5837040B2/en
Expired legal-status Critical Current

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
JP52109274A 1977-09-10 1977-09-10 Sludge dewatering method Expired JPS5837040B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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