WO1988004572A1 - Procede de traitement de liquides - Google Patents

Procede de traitement de liquides Download PDF

Info

Publication number
WO1988004572A1
WO1988004572A1 PCT/CH1987/000168 CH8700168W WO8804572A1 WO 1988004572 A1 WO1988004572 A1 WO 1988004572A1 CH 8700168 W CH8700168 W CH 8700168W WO 8804572 A1 WO8804572 A1 WO 8804572A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow
liquid
container
flow path
gas
Prior art date
Application number
PCT/CH1987/000168
Other languages
German (de)
English (en)
Inventor
Peter Hiltebrand
Original Assignee
Peter Hiltebrand
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 Peter Hiltebrand filed Critical Peter Hiltebrand
Publication of WO1988004572A1 publication Critical patent/WO1988004572A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2322—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles using columns, e.g. multi-staged columns
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to a method and a device according to the preambles of independent claims 1 and 6.
  • processing agent denotes a gaseous substance which, in essentially pure form or as a component of a gas mixture, accomplishes the above-mentioned processing task.
  • the mass transfer processes at the phase interface as well as the partially low concentrations of the active treatment component represent the performance-limiting factors. Corresponding treatment processes therefore require certain minimum contact and exposure times between the liquid and the treatment agent.
  • the method according to the invention comprises two main steps:
  • the treatment agent entry takes place primarily in the circulatory flow under controlled flow conditions. In particular, this facilitates the optimization of the gas-liquid mass transport and allows stationary loading driving conditions.
  • the raw water is also contacted with treatment agent immediately after entering the treatment area. A strong backmixing of the liquid takes place within the individual zones of the circulatory flow (mixing zone raw liquid-circulatory liquid, pump, separation zone gas-liquid).
  • the main direction of flow of the liquid leading to the container head ie upward, has great advantages. If the liquid drive means is switched off intentionally or unintentionally, firstly no liquid can flow out of the process, rather the liquid level drops due to the natural separation of the gas caused by the buoyancy. Secondly, the flow control also prevents the pre-treated water from mixing back even with a standstill, with any raw liquid that has already been entered but not yet adequately treated. In the area of the vertical flow sections, the automatically redispersing can be influenced by the use of additional redispersants. For example, it is possible to optimize the gas-liquid mass transfer using static mixed elements or frits.
  • the treatment agent can furthermore be wholly or partially, e.g. be gradually removed from the reprocessing process. This can be advantageous, for example, in the case of viscous liquids.
  • concentration of dissolved processing agent in the liquid can be reduced if necessary with the aid of a further gaseous agent added after removal.
  • the figure shows a device in which pre-filtered raw water is processed into drinking water using the method according to the invention.
  • Ozone is used as a conditioning agent.
  • the pre-filtration and ozone generation process steps, not shown or described, are assumed to be known.
  • the pre-filtered raw water flows through the nozzle 5 into the chamber 3, which is open at the top and represents a partial volume of the treatment container 1.
  • the chamber 3 contains the intake port 6 of the circulatory flow 12 which detects the lower container content. If no raw water flows in, the water which flows through the opening 14 in the container flows into the circuit. However, as soon as raw water flows in, it is preferably sucked into the circuit.
  • the pump 13 conveys the water in the circuit through the mixing element IS, where ozone-containing air is mixed, via the nozzle 7 into the second chamber 4, which is also open at the top.
  • the two chambers 3, 4 are separated from one another by a partition 2. This partition can either perform the function of an overflow weir or, as shown in the figure, close the circuit flow by means of an opening 19. If necessary, it can be provided with a device, not shown, which prevents water from being returned from the chamber 3 into the chamber 4.
  • the division of the container bottom area into two chambers has the advantage that the raw water is passed through the circuit at least once and high concentration ozone is added. It also ensures segregation of the gas outside the suction area of the circulation pump, which among other things. the use of conventional centrifugal pumps in the circuit.
  • the ratio of inlet flow and circulation flow can be chosen freely and thus adapted to the respective reaction rates.
  • repeated circulation ie a ratio of circulating flow to supply flow of greater than 1 is indicated, since the ozone consumption of the raw water is high at the beginning of the reaction, the solubility of ozone in water rel. is low.
  • the circuit flow can of course also function with the raw water supply switched off or interrupted.
  • the mixing element can be optimally dimensioned in the circuit thanks to the stationary cleaning parameters, which is particularly advantageous when using injectors or venturi mixers.
  • the pump 13 can also be arranged after the mixing element 15. In this case, it must be able to convey gas and liquid at the same time. This is the case, for example, with side channel pumps. Particularly high material input rates have been observed.
  • the cycle can also be implemented differently than shown. It can be arranged completely within the container 1. However, it is also possible to use an axial agitator arranged in a guide tube instead of a pump, if necessary with special gas entry propeller blades.
  • the gas entered into the chamber 4 automatically flows upward and reaches the first horizontal flow zone through the frit 11 inserted in the bottom floor.
  • the gas is redispersed through the frit 11, which again leads to increased material input. If water is removed from the container at the same time, a corresponding amount of water also flows vertically upwards through the first frit mentioned.
  • guide elements e.g. sheet metal strips fastened to the floor, a guide that leads, for example, to a graft flow.
  • the number of floors required is mainly determined by the necessary dwell time. A range of 15 to 45 minutes is given as a guideline for water zoning. Preferably more than 20 floors are used.
  • the floors are interchangeable in the container via annular spacers 17 designed as sealing elements used and fixed in position by clamping elements.
  • Another installation device can of course also be provided if it fulfills the conditions mentioned.
  • the tensioning elements are not shown in the figure.
  • openings or frits can also be arranged at other locations on the floors than shown in the figure.
  • the openings or frits can also be arranged at other locations on the floors than shown in the figure.
  • the method according to the invention offers the simplest control options. If, for example, the quality of the starting liquid does not meet the required minimum values, either the raw liquid supply can be throttled (the circulation flow is independent of it) or the processing agent supply can be increased. In the event that completely inadequate preparation quality should be determined, a bypass circuit from the container outlet to the entry support 5 is conceivable (this bypass is not shown in the figure).
  • the quality control can be carried out, for example, by means of a redox measurement.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

Ce procédé exige l'utilisation d'un agent de traitement gazeux. Dans une première étape du processus, le liquide circule plusieurs fois en circuit fermé où il est mis en contact avec l'agent de traitement. En aval de ce circuit fermé (3, 4) se trouve une zone de réaction composée de sections d'écoulement alternativement verticales et horizontales (9, 11, 17) où il ne se produit pas de remélangeage appréciable. Pendant cette seconde étape du processus, le liquide continue à être mis en contact avec l'agent de traitement s'écoulant dans le même sens. Ce procédé est particulièrement utile pour l'ozonisation de l'eau.
PCT/CH1987/000168 1986-12-17 1987-12-10 Procede de traitement de liquides WO1988004572A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5008/86-0 1986-12-17
CH5008/86A CH669185A5 (de) 1986-12-17 1986-12-17 Verfahren zum aufbereiten von fluessigkeiten.

Publications (1)

Publication Number Publication Date
WO1988004572A1 true WO1988004572A1 (fr) 1988-06-30

Family

ID=4286354

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1987/000168 WO1988004572A1 (fr) 1986-12-17 1987-12-10 Procede de traitement de liquides

Country Status (4)

Country Link
EP (1) EP0293418A1 (fr)
AU (1) AU8327687A (fr)
CH (1) CH669185A5 (fr)
WO (1) WO1988004572A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102218166A (zh) * 2011-06-15 2011-10-19 广州市暨华医疗器械有限公司 用于血液透析设备的混合装置
EP3991832A1 (fr) * 2020-10-27 2022-05-04 Mba S.A. Système et procédé de production d'un liquide comprenant des bulles de gaz

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10061890C2 (de) * 2000-12-12 2002-11-21 Deutsch Zentr Luft & Raumfahrt Vorrichtung zur Aufbereitung von Wasser, insbesondere zur Gewinnung von Trinkwasser, durch Behandlung mit Ozon
DE10246452B4 (de) * 2002-10-04 2007-12-27 Dinotec Gmbh Wassertechnologie Und Schwimmbadtechnik Reaktionsgefäß zur Aufbereitung von Wasser mit Ozon
CN111298161B (zh) * 2019-12-09 2021-11-16 河北华沃环保科技有限责任公司 基于臭氧的除臭杀菌装置设备及具有其的无臭垃圾房

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191122826A (en) * 1911-10-16 1912-04-04 Anders Andersen Pindstofte Improved Process for Impregnating Liquids with Carbonic Acid and Apparatus therefor.
US1907050A (en) * 1930-10-03 1933-05-02 William S Elliott Method and apparatus for removing air from liquids
DE1907278A1 (de) * 1969-02-13 1970-08-27 Ludwik Smolski Verfahren und Vorrichtung zur Behandlung von Fluessigkeiten
DE2045603A1 (de) * 1969-09-17 1971-04-22 Procedes Sem Verfahren und Vorrichtung zur Ver mischung einer gasförmigen Phase mit einer flüssigen Phase
DE1792299A1 (de) * 1968-08-16 1972-04-06 Niederrheinische Gas Und Wasse Verfahren zur Aufbereitung von Rohwasser
US3835039A (en) * 1972-12-22 1974-09-10 Cubic Corp Waste water treatment system
US3945918A (en) * 1974-01-10 1976-03-23 Airco, Inc. Methods and apparatus for treating a liquid with a gas
US4072613A (en) * 1976-10-04 1978-02-07 The United States Of America As Represented By The Secretary Of The Navy Ozone reactor for liquids
EP0103674A2 (fr) * 1982-08-26 1984-03-28 Krupp Koppers GmbH Procédé et dispositif pour la séparation d'ammoniac libre et combiné à partir de solutions aqueuses renfermant les deux constituants

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191122826A (en) * 1911-10-16 1912-04-04 Anders Andersen Pindstofte Improved Process for Impregnating Liquids with Carbonic Acid and Apparatus therefor.
US1907050A (en) * 1930-10-03 1933-05-02 William S Elliott Method and apparatus for removing air from liquids
DE1792299A1 (de) * 1968-08-16 1972-04-06 Niederrheinische Gas Und Wasse Verfahren zur Aufbereitung von Rohwasser
DE1907278A1 (de) * 1969-02-13 1970-08-27 Ludwik Smolski Verfahren und Vorrichtung zur Behandlung von Fluessigkeiten
DE2045603A1 (de) * 1969-09-17 1971-04-22 Procedes Sem Verfahren und Vorrichtung zur Ver mischung einer gasförmigen Phase mit einer flüssigen Phase
US3835039A (en) * 1972-12-22 1974-09-10 Cubic Corp Waste water treatment system
US3945918A (en) * 1974-01-10 1976-03-23 Airco, Inc. Methods and apparatus for treating a liquid with a gas
US4072613A (en) * 1976-10-04 1978-02-07 The United States Of America As Represented By The Secretary Of The Navy Ozone reactor for liquids
EP0103674A2 (fr) * 1982-08-26 1984-03-28 Krupp Koppers GmbH Procédé et dispositif pour la séparation d'ammoniac libre et combiné à partir de solutions aqueuses renfermant les deux constituants

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102218166A (zh) * 2011-06-15 2011-10-19 广州市暨华医疗器械有限公司 用于血液透析设备的混合装置
EP3991832A1 (fr) * 2020-10-27 2022-05-04 Mba S.A. Système et procédé de production d'un liquide comprenant des bulles de gaz

Also Published As

Publication number Publication date
CH669185A5 (de) 1989-02-28
AU8327687A (en) 1988-07-15
EP0293418A1 (fr) 1988-12-07

Similar Documents

Publication Publication Date Title
EP0208696B1 (fr) Procede de dissolution de gaz dans un liquide
EP0086019B1 (fr) Procédé et dispositif pour la gazéification d'un liquide
DE2230610C2 (de) Verfahren und Apparatur zum Reinigen einer wäßrigen Zuckerlösung
EP0035243B1 (fr) Procédé et dispositif de flottation
DE2844398C2 (de) Verfahren und Vorrichtung zum Dispergieren eines Gases in einer Flüssigkeit
DE2229895C3 (de) Verfahren zur Herstellung einer in Salzsäure löslichen Alkali/Aluminium-Silikat-Dispersion und Verwendung der Dispersion zur Entfernung von Feststoffen aus einer wäßrigen Suspension
DE3338171C3 (de) Verfahren zum Trennen der Bestandteile von Emulsionen und Vorrichtung zur Durchführung des Verfahrens
DE3781504T2 (de) Verfahren und vorrichtung zum mischen von gasen und fluessigkeiten.
EP0163159B1 (fr) Procédé pour la purification biologique d'eau usée
DE3217041C2 (fr)
DE2556522A1 (de) Vorrichtung zum behandeln von fluessigkeiten
DE2032528A1 (de) Verfahren und Vorrichtung zum Behandeln von Abwasser
DE1667231B2 (de) Vorrichtung zur durchfuehrung eines stoffaustauschs zwischen gas- und fluessigen phasen
DE2045603B2 (de) Vorrichtung zum einmischen eines gases in eine fluessigkeit
WO1988004572A1 (fr) Procede de traitement de liquides
CH630046A5 (en) Method for the continuous entry of air or other oxygen-containing gases into an activated-sludge-containing wastewater or fermentation broths
DE4008676A1 (de) Verfahren und vorrichtung zur aeroben abwasserbehandlung
DE2710516A1 (de) Verfahren und einrichtung zur fluessigkeitsaufbereitung
DE2452295C3 (de) Verfahren und Vorrichtung zur biologischen Reinigung von Abwasser
DE2938264C2 (de) Vorrichtung zur Wasserreinigung und/oder -belüftung durch Entspannungsflotation
DE2420076A1 (de) Vorrichtung zum kontinuierlichen eintrag von sauerstoff in ein kontinuierlich betriebenes einstufiges belebtschlammbecken
DE3031755C2 (de) Verfahren und Vorrichtung zur kontinuierlichen chemischen Behandlung von gelöste, emulgierte und/oder kolloidale Stoffe enthaltenden Flüssigkeiten und zur Abtrennung dieser Stoffe mit Hilfe der Schwerkraft
DE1923446A1 (de) Verfahren und Vorrichtung zum Belueften von in einem Behaelter befindlichen Fluessigkeiten
DE2432543A1 (de) Vorrichtung zur biologischen behandlung fluessiger suspensionen
WO2018228713A1 (fr) Procédé et dispositif de mélange pour la régulation de l'introduction d'une substance sous forme de poudre dans un liquide pour un procédé de mélange par lots

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1987907734

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1987907734

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1987907734

Country of ref document: EP