JPS57171500A - Sludge-dewatering method - Google Patents

Sludge-dewatering method

Info

Publication number
JPS57171500A
JPS57171500A JP56055602A JP5560281A JPS57171500A JP S57171500 A JPS57171500 A JP S57171500A JP 56055602 A JP56055602 A JP 56055602A JP 5560281 A JP5560281 A JP 5560281A JP S57171500 A JPS57171500 A JP S57171500A
Authority
JP
Japan
Prior art keywords
water
sludge
separated
gravity
bonded
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
Application number
JP56055602A
Other languages
Japanese (ja)
Inventor
Hiroyuki Aritoshi
Taiichi Nakayama
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP56055602A priority Critical patent/JPS57171500A/en
Publication of JPS57171500A publication Critical patent/JPS57171500A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To save a consumption amount of tap water required for washing a meshed belt, by adding a flocculant to water-retaining sludge, separating the sludge into bonded bulky sludge and gravity-separated water to wash the returning side of the meashed belt.
CONSTITUTION: A flocculant is added to water-retaining sludge A extracted from a treating vessel, and the sludge is separated into bulky sludge H comprising bonded sludge particles and retained water W. The mixture of the bulky sludge H and the contained water W is then separated into high-clearness gravity-separated water J and the mixture of the bonded sludge H and the remaining retained water W. The gravity-separated water J is utilized to wash the returning side of upper and lower meshed belts 1, 2 by a pump and at injection nozzle. The waste washing water G from the meshed belts is mixed with press-separated water C and shear-separated water D and returned into a sedimentation vessel.
COPYRIGHT: (C)1982,JPO&Japio
JP56055602A 1981-04-15 1981-04-15 Sludge-dewatering method Pending JPS57171500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56055602A JPS57171500A (en) 1981-04-15 1981-04-15 Sludge-dewatering method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56055602A JPS57171500A (en) 1981-04-15 1981-04-15 Sludge-dewatering method

Publications (1)

Publication Number Publication Date
JPS57171500A true JPS57171500A (en) 1982-10-22

Family

ID=13003318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56055602A Pending JPS57171500A (en) 1981-04-15 1981-04-15 Sludge-dewatering method

Country Status (1)

Country Link
JP (1) JPS57171500A (en)

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