FR2321128A1 - Detection of poisons of microorganisms in effluent - sensitively and in a few minutes to protect treatment plant - Google Patents

Detection of poisons of microorganisms in effluent - sensitively and in a few minutes to protect treatment plant

Info

Publication number
FR2321128A1
FR2321128A1 FR7624376A FR7624376A FR2321128A1 FR 2321128 A1 FR2321128 A1 FR 2321128A1 FR 7624376 A FR7624376 A FR 7624376A FR 7624376 A FR7624376 A FR 7624376A FR 2321128 A1 FR2321128 A1 FR 2321128A1
Authority
FR
France
Prior art keywords
effluent
oxygen
bacteria
fermentor
rate
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.)
Withdrawn
Application number
FR7624376A
Other languages
French (fr)
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of FR2321128A1 publication Critical patent/FR2321128A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1806—Water biological or chemical oxygen demand (BOD or COD)

Abstract

The presence of material which would slow growth of bacteria in effluent is detected by measuring the rate of disappearance of dissolved oxygen in a sample which has been oxygenated and inoculated with bacteria. The measurement is made with an electrochemical oxygen meter. The steps in the test are as follows: (A) Measured quantities of effluent, diluent water and bacteria source are charged to separate measuring tanks. They are held at the required temp. and air is bubbled through all the tanks for a predetermined time. (b) The diluent and bacteria source are run into a stirred fermentor at the same constant temp. and air is bubbled through the mixt. for a predetermined time. (c) The effluent is run into the fermentor. The air supply is stopped and the vessel is sealed from the atmos. The amts. of effluent and diluent are chosen so that the bacteria added are sufficient for the bacterial activity can reach its maximum value. The oxygen and demand is greater than the total oxygen available in the fermentor. The rate of oxygen used is small enough for equlibrium to be maintained between the liq. and gas phases in the fermentor. A meter is used to determine either the fall in oxygen concn. in the liquid in a given time or the time taken for a given concentration drop. The average rate of oxygen use is calculated. The actual rate is compared with that for a similar procedure with a poison free nutrient substrate replacing the effluent. The method is sensitive to small amts. and takes only a few mins. to give a result.
FR7624376A 1975-08-12 1976-08-10 Detection of poisons of microorganisms in effluent - sensitively and in a few minutes to protect treatment plant Withdrawn FR2321128A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7509570A NL7509570A (en) 1975-08-12 1975-08-12 METHOD AND DEVICE FOR DETECTING TOXIC SUBSTANCES IN WASTE WATER.

Publications (1)

Publication Number Publication Date
FR2321128A1 true FR2321128A1 (en) 1977-03-11

Family

ID=19824287

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624376A Withdrawn FR2321128A1 (en) 1975-08-12 1976-08-10 Detection of poisons of microorganisms in effluent - sensitively and in a few minutes to protect treatment plant

Country Status (9)

Country Link
JP (1) JPS5223396A (en)
AT (1) AT348951B (en)
BE (1) BE844824A (en)
DE (1) DE2636109A1 (en)
ES (2) ES450609A1 (en)
FR (1) FR2321128A1 (en)
IT (1) IT1066112B (en)
NL (1) NL7509570A (en)
SE (1) SE7608945L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006376A1 (en) * 1978-06-15 1980-01-09 Rhone-Poulenc Industries Method for the measuring and/or determination of toxicity and apparatus for applying this method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56108950A (en) * 1980-02-01 1981-08-28 Nissin Electric Co Ltd Detection of poisonous matter and its apparatus
JPS56108951A (en) * 1980-02-01 1981-08-28 Nissin Electric Co Ltd Method for deciding whether biological treatment for liquid is possible or not
ES2081767B1 (en) * 1994-06-06 1996-10-01 Soliveres Juan Emilio Serrano METHOD AND DEVICE FOR THE CONTINUOUS ANALYSIS OF THE BREATHING OF AN ACTIVE MUD.
JP5347711B2 (en) * 2009-05-21 2013-11-20 新日鐵住金株式会社 Detection method of harmful substances in water

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2196294A1 (en) * 1972-08-17 1974-03-15 Voith Gmbh Oxygen demand measurement - for biological sewage treatment has program control for activated sludge and effluent mixtures

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2196294A1 (en) * 1972-08-17 1974-03-15 Voith Gmbh Oxygen demand measurement - for biological sewage treatment has program control for activated sludge and effluent mixtures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006376A1 (en) * 1978-06-15 1980-01-09 Rhone-Poulenc Industries Method for the measuring and/or determination of toxicity and apparatus for applying this method
FR2428842A1 (en) * 1978-06-15 1980-01-11 Rhone Poulenc Ind METHOD FOR MEASURING AND / OR DETECTING TOXICITY

Also Published As

Publication number Publication date
AT348951B (en) 1979-03-12
ES461136A1 (en) 1978-06-16
IT1066112B (en) 1985-03-04
SE7608945L (en) 1977-02-13
BE844824A (en) 1977-02-03
NL7509570A (en) 1977-02-15
ATA582776A (en) 1978-07-15
ES450609A1 (en) 1977-12-16
DE2636109A1 (en) 1977-03-03
JPS5223396A (en) 1977-02-22

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