Title:
DEVICE AND METHOD FOR SAMPLING OF ACTIVE SLUDGE MIXED LIQUID
Document Type and Number:
Japanese Patent JP2015013225
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a technique of sampling an active sludge mixed liquid in the same conditions of an aeration tank without use of cutoff devices, e.g. an electromagnetic valve.SOLUTION: A sampling device 1 includes a measurement container 2, an active sludge container 6 to be immersed with the measurement container 2, a compressor 4 for pressurizing the inside of the measurement container 2, an electromagnetic valve 3 capable of opening to the room air and cutting off of the inside of the measurement container 2, a constant rate pump 7 for injecting dilution water into the measurement container 2, and a pressure gauge 8 for measuring the pressure of the inside of the measurement container 2. In the bottom part of the measurement container 2, a coil-like slender tube part 5 is provided, and the measurement container 2 communicates with the active sludge container 6 through the slender tube part 5. When the mixed liquid flows into or is discharged from the measurement container 2, intended dilution sampling is feasible owing to the buffer action of the tube resistance on passing through the slender tube part 5.
Inventors:
OGAWA TAKAO
Application Number:
JP2013139580A
Publication Date:
January 22, 2015
Filing Date:
July 03, 2013
Export Citation:
Assignee:
OGAWA KANKYO KENKYUSHO KK
International Classes:
C02F3/12
Attorney, Agent or Firm:
Tetsuro Sugihara