JPS5513135A - Measuring device for nitrogen content of waste water - Google Patents

Measuring device for nitrogen content of waste water

Info

Publication number
JPS5513135A
JPS5513135A JP8606178A JP8606178A JPS5513135A JP S5513135 A JPS5513135 A JP S5513135A JP 8606178 A JP8606178 A JP 8606178A JP 8606178 A JP8606178 A JP 8606178A JP S5513135 A JPS5513135 A JP S5513135A
Authority
JP
Japan
Prior art keywords
waste water
gas
nitrous oxide
concentration
total nitrogen
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
JP8606178A
Other languages
Japanese (ja)
Inventor
Toshio Hisaie
Yukio Saito
Shunsuke Nokita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP8606178A priority Critical patent/JPS5513135A/en
Publication of JPS5513135A publication Critical patent/JPS5513135A/en
Pending legal-status Critical Current

Links

Classifications

    • Y02W10/12—

Landscapes

  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

PURPOSE: To detect the concentration of total nitrogen in waste water indirectly but simply and continuously by measuring the amount of nitrous oxide generated in waste gas from denitrification tank.
CONSTITUTION: A part of waste water branched from the main waste water pipe 1 is treated in the nitrification tank 31 and the denitrification tank 32, and a carrier gas, e.g., nitrogen gas, methane gas, etc., is continuously introduced into the denitrification tank 32 to carry along waste gas to the nitrous oxide gas meter 38, e.g., an infrared analyzer, gas chromatographic analyzer, etc., to measure nitrous oxide concentration. The total nitrogen concentration of waste water is detected by utilizing the relation between the nitrous oxide concentration measured and the total nitrogen concentration of waste water in order to control activated sludge process as needed.
COPYRIGHT: (C)1980,JPO&Japio
JP8606178A 1978-07-17 1978-07-17 Measuring device for nitrogen content of waste water Pending JPS5513135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8606178A JPS5513135A (en) 1978-07-17 1978-07-17 Measuring device for nitrogen content of waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8606178A JPS5513135A (en) 1978-07-17 1978-07-17 Measuring device for nitrogen content of waste water

Publications (1)

Publication Number Publication Date
JPS5513135A true JPS5513135A (en) 1980-01-30

Family

ID=13876172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8606178A Pending JPS5513135A (en) 1978-07-17 1978-07-17 Measuring device for nitrogen content of waste water

Country Status (1)

Country Link
JP (1) JPS5513135A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59117157A (en) * 1982-12-24 1984-07-06 Hitachi Ltd Semiconductor device
JPS6122652A (en) * 1984-07-10 1986-01-31 Toshiba Corp Semiconductor device
FR2730172A1 (en) * 1995-02-07 1996-08-09 Air Liquide METHOD AND APPARATUS FOR MONITORING THE OPERATION OF AN AIR SEPARATION FACILITY
JP2011110501A (en) * 2009-11-27 2011-06-09 Hitachi Ltd Water treatment equipment
JP2011147858A (en) * 2010-01-20 2011-08-04 Hitachi Ltd Apparatus and method for treating sewage

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59117157A (en) * 1982-12-24 1984-07-06 Hitachi Ltd Semiconductor device
JPS6122652A (en) * 1984-07-10 1986-01-31 Toshiba Corp Semiconductor device
FR2730172A1 (en) * 1995-02-07 1996-08-09 Air Liquide METHOD AND APPARATUS FOR MONITORING THE OPERATION OF AN AIR SEPARATION FACILITY
EP0726434A1 (en) * 1995-02-07 1996-08-14 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and apparatus for monitoring the operation of an air separation plant
AU705899B2 (en) * 1995-02-07 1999-06-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and device for monitoring the operation of an air separation plant
JP2011110501A (en) * 2009-11-27 2011-06-09 Hitachi Ltd Water treatment equipment
JP2011147858A (en) * 2010-01-20 2011-08-04 Hitachi Ltd Apparatus and method for treating sewage

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