FR2372421A1 - Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water - Google Patents
Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean waterInfo
- Publication number
- FR2372421A1 FR2372421A1 FR7636059A FR7636059A FR2372421A1 FR 2372421 A1 FR2372421 A1 FR 2372421A1 FR 7636059 A FR7636059 A FR 7636059A FR 7636059 A FR7636059 A FR 7636059A FR 2372421 A1 FR2372421 A1 FR 2372421A1
- Authority
- FR
- France
- Prior art keywords
- emitter
- receiver
- ring
- waste water
- clean water
- 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.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 4
- 239000002351 wastewater Substances 0.000 title 1
- 241000195493 Cryptophyta Species 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- 235000013311 vegetables Nutrition 0.000 abstract 1
- 238000001429 visible spectrum Methods 0.000 abstract 1
- 238000004069 wastewater sedimentation Methods 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The detector head is immersed by suspending it from a service tube which extends clear of the tank. The head is in the form of a ring on a horizontal axis and with an open centre through which liq. can pass. The annular body of the ring houses diametrically opposed emitter and receiver for luminous waves outside the visible spectrum, partic. infra-red waves and esp. those of wavelength between 0.90 and 15 microns. Clean water is continually flushed across the effective faces of the emitter and receiver. The ring is pref. made of a synthesic plastic and passages are formed in the ring body for connection to the emitter and receiver from the service tube, as well as clean water passages to carry water from the service tube. Used for monitoring the sludge level in a waste water sedimentation tank, partic. a secondary sedimentation tank, where the sludge is of low density. Waste water treatment is regulated w.r.t. to sludge level. Algae and vegetable growth is destroyed, by infra-red radiation, so the probe does not become fouled up.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7636059A FR2372421A1 (en) | 1976-11-30 | 1976-11-30 | Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water |
ES464233A ES464233A1 (en) | 1976-11-30 | 1977-11-17 | Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water |
IT83524/77A IT1097723B (en) | 1976-11-30 | 1977-11-22 | MUD WATER INTERFACE LEVEL DETECTOR IN RESIDUAL WATER TREATMENT |
ZA00777007A ZA777007B (en) | 1976-11-30 | 1977-11-24 | Detection device of the water-sludge interface level in the treatment of waste waters |
BE2056469A BE861239A (en) | 1976-11-30 | 1977-11-28 | WATER-MUD INTERFACE LEVEL DETECTOR IN RESIDUAL WATER TREATMENT |
CH1457177A CH618009A5 (en) | 1976-11-30 | 1977-11-29 | Probe for detecting the level of the water/sludge interface in the treatment of liquid effluent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7636059A FR2372421A1 (en) | 1976-11-30 | 1976-11-30 | Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2372421A1 true FR2372421A1 (en) | 1978-06-23 |
FR2372421B3 FR2372421B3 (en) | 1980-10-17 |
Family
ID=9180472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7636059A Granted FR2372421A1 (en) | 1976-11-30 | 1976-11-30 | Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE861239A (en) |
CH (1) | CH618009A5 (en) |
ES (1) | ES464233A1 (en) |
FR (1) | FR2372421A1 (en) |
IT (1) | IT1097723B (en) |
ZA (1) | ZA777007B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013110697A1 (en) * | 2012-01-25 | 2013-08-01 | Bayer Intellectual Property Gmbh | Reflection probe |
-
1976
- 1976-11-30 FR FR7636059A patent/FR2372421A1/en active Granted
-
1977
- 1977-11-17 ES ES464233A patent/ES464233A1/en not_active Expired
- 1977-11-22 IT IT83524/77A patent/IT1097723B/en active
- 1977-11-24 ZA ZA00777007A patent/ZA777007B/en unknown
- 1977-11-28 BE BE2056469A patent/BE861239A/en unknown
- 1977-11-29 CH CH1457177A patent/CH618009A5/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013110697A1 (en) * | 2012-01-25 | 2013-08-01 | Bayer Intellectual Property Gmbh | Reflection probe |
JP2015505057A (en) * | 2012-01-25 | 2015-02-16 | バイエル・インテレクチュアル・プロパティ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングBayer Intellectual Property GmbH | Reflective probe |
US9285312B2 (en) | 2012-01-25 | 2016-03-15 | Bayer Ag | Reflection probe |
Also Published As
Publication number | Publication date |
---|---|
FR2372421B3 (en) | 1980-10-17 |
IT1097723B (en) | 1985-08-31 |
ES464233A1 (en) | 1978-07-16 |
BE861239A (en) | 1978-03-16 |
ZA777007B (en) | 1978-09-27 |
CH618009A5 (en) | 1980-06-30 |
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