JPS55122136A - Method and apparatus for measuring lowering curve of interface of precipitating sludge - Google Patents

Method and apparatus for measuring lowering curve of interface of precipitating sludge

Info

Publication number
JPS55122136A
JPS55122136A JP2942979A JP2942979A JPS55122136A JP S55122136 A JPS55122136 A JP S55122136A JP 2942979 A JP2942979 A JP 2942979A JP 2942979 A JP2942979 A JP 2942979A JP S55122136 A JPS55122136 A JP S55122136A
Authority
JP
Japan
Prior art keywords
sludge
interface
concentration
elastic modulus
calculator
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
JP2942979A
Other languages
Japanese (ja)
Inventor
Junji Hizuka
Chikau Yamanaka
Kazuo Shibazaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2942979A priority Critical patent/JPS55122136A/en
Publication of JPS55122136A publication Critical patent/JPS55122136A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/04—Investigating sedimentation of particle suspensions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To speedily and simply determine the variations with the lapse of time of height of an interface of sludge, by determining the state of precipitation of sludge in an objective system on the assumption that the sludge is a dynamic model having an elastic modulus and a stress relaxation factor, and calculate a variation curve of interface of the precipitating sludge on the basis of the results of calculation of the elastic modulus and stress relaxation factor thereof. CONSTITUTION:A sludge precipitation tube 1 consisting of, for example, a measuring cylinder of a capacity of around 1l is used as a sludge precipitation testing system. The precipitating sludge in the tube 1 is subjected to measurement by an interface measuring means 2 and a concentration measuring means 3. The elastic modulus and stress relaxation factor of the sludge is determined as a function of the concentration of the sludge by a first calculator 4 by using outputs from the means 2, 3. The concentration of sludge in an objective system 5 is then measured by a sludge concentration measuring means 6. A variation curve of interface of the sludge in the objective system is operated by a second arithmetic calculator 7 on the basis of outputs from the first calculator 4 and means 6 to be displayed by an indicator 8.
JP2942979A 1979-03-15 1979-03-15 Method and apparatus for measuring lowering curve of interface of precipitating sludge Pending JPS55122136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2942979A JPS55122136A (en) 1979-03-15 1979-03-15 Method and apparatus for measuring lowering curve of interface of precipitating sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2942979A JPS55122136A (en) 1979-03-15 1979-03-15 Method and apparatus for measuring lowering curve of interface of precipitating sludge

Publications (1)

Publication Number Publication Date
JPS55122136A true JPS55122136A (en) 1980-09-19

Family

ID=12275884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2942979A Pending JPS55122136A (en) 1979-03-15 1979-03-15 Method and apparatus for measuring lowering curve of interface of precipitating sludge

Country Status (1)

Country Link
JP (1) JPS55122136A (en)

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