EP0081542A1 - Procede et dispositif pour le traitement des eaux usees - Google Patents

Procede et dispositif pour le traitement des eaux usees

Info

Publication number
EP0081542A1
EP0081542A1 EP82901906A EP82901906A EP0081542A1 EP 0081542 A1 EP0081542 A1 EP 0081542A1 EP 82901906 A EP82901906 A EP 82901906A EP 82901906 A EP82901906 A EP 82901906A EP 0081542 A1 EP0081542 A1 EP 0081542A1
Authority
EP
European Patent Office
Prior art keywords
gassing
shearing
waste water
shearing device
gassing part
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
EP82901906A
Other languages
German (de)
English (en)
Inventor
Jürgen Zink
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.)
Menzel and Co GmbH
Original Assignee
Menzel and Co GmbH
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 Menzel and Co GmbH filed Critical Menzel and Co GmbH
Publication of EP0081542A1 publication Critical patent/EP0081542A1/fr
Pending legal-status Critical Current

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
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • C02F3/207—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors with axial thrust propellers
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • 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 invention relates to a method for treating waste water with biological treatment and denitrification.
  • the invention is therefore based on the object to improve a method of the type described so that a changing fumigation of the wastewater z. B. possible for denitrification in a basin and a clog-free gassing function with fine-bubble gas input can be achieved.
  • a gassing part for treating the wastewater is lifted vertically towards the surface thereof or raised above it, and in that a gas bubble gas outlet which is preferably fine bubbles up to that point during the gassing phase is largely reduced or completely prevented.
  • a major advantage of the method according to the invention is that the latter can also preferably be provided for remedial measures in older wastewater treatment plants that are already in operation and are usually relatively expensive to operate, since the measures to be taken to carry out the method with regard to the vertical displacement of the fumigation part for the ventilation according to the invention are not are very large and can be fully absorbed after a short time due to the higher performance achieved with the method and the associated cost savings. It is thus possible, for example, to arrange the gassing part in a height-adjustable manner on a bridge part arranged above the aeration tank, with a spindle drive or the like for the height distributability. featured can be seen.
  • the method according to the invention in newly designed waste water treatment plants, with the denitrification process of the waste water being integrated in the aeration tank in terms of construction.
  • the vertical lifting of the gassing part according to the invention ensures that the pores on the gassing part cannot become blocked during the denitrification phase. It is in particular possible to use a gassing part which is particularly fine-bubble or which produces very fine bubbles, as a result of which a high oxygen input and a long residence time in the wastewater can be achieved, which can be increased in particular by assigning a substantially horizontal flow of the wastewater to the gassing part becomes.
  • Fig. 1 is a plan view of a wastewater treatment plant with a gassing unit that rotates around a vertical axis and is adjustable in height,
  • FIG. 1 shows a side view of a gassing unit which is height-adjustable according to the invention and has a gas outlet on one side
  • FIG. 2 shows a top view of the vertically adjustable gassing unit similar to FIG. 1 in a somewhat enlarged illustration with an approximately star-shaped shearing device part
  • FIG. 4 shows a plan view of a vertically adjustable gassing unit similar to FIG. 5, but with a lattice-shaped shearing device part,
  • FIG. 9 is a side view of a vertically adjustable gassing unit according to FIG. 8, but with a sludge feed pipe directed essentially horizontally to the rotary aerator plane.
  • FIG. 1 and 2 show a wastewater treatment plant 1 which has a circular activation tank 2 which is delimited by an outer wall 3 and contains wastewater 4.
  • a flow generator 5 is arranged next to the outer wall 3, which is designed as a propeller rotating about a horizontal axis and puts the waste water 4 in a flow 6 indicated by arrows.
  • a gassing unit 7, 8 is arranged behind the flow generator 5 in the activation tank 2.
  • the gassing units 7,8 are as.
  • Rotary aerators are designed and have disk-shaped gassing parts 9, which are mounted on a rotating hollow shaft 10 and, according to the invention, are vertically adjustable for lifting the wastewater 4 or can be lifted out above the water surface.
  • the height adjustment or the lifting out of the gassing parts 9 is expediently carried out via a vertical spindle drive (not shown) or the like.
  • a shear device part 11 is provided in a plane parallel to the gas outlet sides of the gassing parts 9.
  • the shearing device parts 11 have the effect that the escaping gas bubbles are very fine from the gassing part 9 already in their first phase of formation are sheared off, so that an energy-saving yet highly effective fine-bubble atmospheric oxygen input into the waste water 4 is possible with simple means.
  • both the gassing part 9 and the shearing device part 11 can rotate, the directions of rotation preferably being opposite to one another.
  • the hollow shaft 10 of the gassing unit 7 is arranged vertically, so that the shearing movement of the gassing part
  • shearing device part 11 takes place in a horizontal plane rotating about a vertical axis.
  • shearing device part of FIG. 1 has shearing struts 12 arranged in a star shape or in the form of a spoked wheel.
  • the shearing device part 11, which is freely rotatably supported on the hollow shaft 10 has a flow rudder 13 which is immersed in the waste water 4 and thus stabilizes the shearing device part 11 against unintentional rotation.
  • shearing device part 11 is arranged between two gassing parts 9. Two more Shear device parts 11 form the end on both outer end faces of the gassing unit 8.
  • the flow 6 of the waste water 4 is advantageously directed at right angles to the direction of exit of the gas bubbles from the gassing parts 9 and essentially parallel to their plane and parallel to the plane of the shearing device parts 11. Since the flow generator 5 advantageously rotates about a horizontal axis, the flow course directed parallel to the shearing device part 11 also essentially takes place in the horizontal direction, as a result of which the conditions are always largely constant or balanced. In the present exemplary embodiments, the flow generator 5 is arranged upstream of the gassing units 7, 8, so that the latter are located behind the pressure side of the flow generator 5.
  • the flow generator 5 in the flow direction behind the gassing unit 7, 8, so that the latter lies in front of the suction side of the flow generator 5.
  • the distance between the flow generator 5 and the gassing unit 7, 8 can expediently be changed or adapted in accordance with the respective requirements, it being favorable to provide the gassing unit 7, 8 essentially in the region of the highest flow rate of the waste water 4.
  • the parts can thus lie very close to one another or have a greater distance from one another even with appropriate flow guidance.
  • the flow generator 5 is located essentially in the same plane with the aerator 7,8.
  • the gassing units 7, 8 are designed according to the invention in such a way that at least the gassing part 9 in the wastewater 4 can be adjusted in height. It is advantageous during a denitrification phase of the wastewater 4 to raise the gassing part 9 in the direction of the water surface to such an extent that it remains just below the water surface, the gas bubble outlet being reduced to a minimum to prevent blockage. It is within the scope of the invention to lift the gassing part 9 completely out of the wastewater 4 above the water surface and to switch off the gas supply completely.
  • the gassing part 9 may be expedient to use in the upper two-thirds range, preferably in the upper half of the waste water 4, so that due to the low immersion depth only a small resistance has to be overcome, so that only a relatively low operating power is required.
  • the fine bubble ventilation is guaranteed here in any case.
  • the vertical spindle drive provided for the inventive lifting of the gassing part 9 for denitrification can preferably be used, so that a wide range of adjustment options can be carried out with a single structural unit.
  • the shearing device part 11 is freely rotating on the hollow shaft 10 at a short distance above the upper gas outlet side 18 of the gassing part 9.
  • the shearing device part 11 is advantageously in the axial direction on the hollow shaft 10 in the range from 0 to approximately 100 mm, preferably 0 to 10 mm adjustable so that the distance from the shear device part 11 to the gas outlet side 18 can be regulated in this area according to the respective requirements.
  • the double arrow next to the hollow shaft 10 is intended to clarify that the gassing part 9 in the wastewater 4 is adjustable in height and can be lifted out over the water surface for denitrification.
  • Fig. 4 shows that the gassing part 9 in addition to the upper and lower gas outlet side 18 each has a shearing device part 11, both of which are independently rotatable on the hollow shaft 10 and are mounted adjustable at a distance.
  • the gassing part 9 has been raised so far upwards for denitrification of the waste water 4 that it is located closely above the surface 19 of the waste water 4.
  • the gassing part 9 is covered by a cover 16, which dips somewhat into the wastewater 4 with its lower edge.
  • a thermal insulation 20 is provided over the top wall of the cover 16.
  • a heating element 21 is arranged underneath, which can be switched on during winter operation and prevents freezing.
  • heating element 21 Under the heating element 21 there is a shower-like sprinkling part 22, by means of which water can be sprayed onto the gassing part 9, so that icing can also be prevented in this way.
  • the heating element 21 and the sprinkling part 22 can be operated together or independently of one another.
  • FIG. 5 shows a somewhat enlarged representation of a schematic arrangement of the Flow generator 5 and the gassing part 9 with the shearing device part 11.
  • the flow 6 is pressed from the pressure side of the propeller-like flow generator 5 against the gassing part 9.
  • the shearing device part 11 in FIG. 5 is star-shaped and has shearing struts 12 striving like a spoked wheel.
  • the shearing device part 11 ' has linear struts 23 which are arranged parallel to one another in the direction of the flow 6.
  • the exemplary embodiment according to FIG. 7 shows a shearing device part 11 ′′ which is arranged above the gassing part 9 and which is designed as a grid 24, the grid openings being able to be large or narrow-meshed as required.
  • FIGS. 8 and 9 disclose that, in particular in the intermittent treatment process of the waste water 4 according to the invention, both feed waste water with feed sludge 25 and return sludge 26 can be introduced into the activation tank 2 in such a way that the entry takes place close to the gassing part 9.
  • the sludge feed pipe 27 introducing the inlet sludge 25 and the return sludge 26 is designed as an essentially vertical downpipe 28 which coaxially surrounds the hollow shaft 10 and has a funnel-shaped enlarged outlet part 29 so that the sludge is optimally distributed .
  • FIG. 8 discloses that, in particular in the intermittent treatment process of the waste water 4 according to the invention, both feed waste water with feed sludge 25 and return sludge 26 can be introduced into the activation tank 2 in such a way that the entry takes place close to the gassing part 9.
  • the sludge feed pipe 27 introducing the inlet sludge 25 and the return sludge 26 is designed as an essentially vertical downpipe 28 which
  • the sludge feed pipe 30 is arranged with its mouth close to the outer circumference of the gassing part 9 designed as a rotary aerator.
  • the inlet sludge 25 and / or the return sludge 26 become essentially horizontal in the plane of the disk-shaped gassing part 9 introduced into the wastewater 4.
  • the substrate is also directly predetermined for the bacteria by the direct supply of waste water.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

Ce procédé et ce dispositif concernent le traitement des eaux usées (4) respectivement des boues d'égout. Pour l'obtention d'un traitement efficace des eaux usées dans un unique bassin de boues activées (2) un élément d'introduction de gaz (9) pour la préparation des eaux usées (4) est soulevé verticalement dans la direction de la surface supérieure des eaux, respectivement au-dessus de celle-ci. Ce ce fait la sortie des gaz qui jusque-là pendant la phase d'introduction de gaz se faisait de préférence sous forme de bulles microscopiques est largement réduite, respectivement complètement inhibée.
EP82901906A 1981-06-20 1982-06-18 Procede et dispositif pour le traitement des eaux usees Pending EP0081542A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813124213 DE3124213A1 (de) 1981-06-20 1981-06-20 Verfahren und vorrichtung zur behandlung von abwasser
DE3124213 1981-06-20

Publications (1)

Publication Number Publication Date
EP0081542A1 true EP0081542A1 (fr) 1983-06-22

Family

ID=6134979

Family Applications (2)

Application Number Title Priority Date Filing Date
EP82105376A Withdrawn EP0068362A1 (fr) 1981-06-20 1982-06-18 Procédé et dispositif pour le traitement d'eau usée
EP82901906A Pending EP0081542A1 (fr) 1981-06-20 1982-06-18 Procede et dispositif pour le traitement des eaux usees

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP82105376A Withdrawn EP0068362A1 (fr) 1981-06-20 1982-06-18 Procédé et dispositif pour le traitement d'eau usée

Country Status (3)

Country Link
EP (2) EP0068362A1 (fr)
DE (1) DE3124213A1 (fr)
WO (1) WO1983000039A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132499A1 (de) * 1981-08-18 1983-04-21 Menzel Gmbh & Co, 7000 Stuttgart Verfahren und vorrichtung zur abwasserreinigung
GB8425577D0 (en) * 1984-10-10 1984-11-14 Flintheath Ltd Fuel control system
FR2689775B1 (fr) * 1992-04-10 1994-07-08 Salomon Sa Dispositif interface entre un ski et des elements de fixation, notamment de fixation alpine.
NL1003470C2 (nl) * 1996-07-01 1998-01-07 Sirius B V Reactor en werkwijze voor het zuiveren van afvalwater.
CN114560554B (zh) * 2022-03-11 2023-06-06 凌志环保股份有限公司 一种河道污水治理用转碟曝气机及其使用方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH290287A (de) * 1951-05-11 1953-04-30 Kerag Kesselschmiede Apparate Verfahren zum Mischen von Gasen mit Flüssigkeiten und Einrichtung zur Durchführung dieses Verfahrens.
DE1203189B (de) * 1955-04-26 1965-10-14 Rieber Ges Mit Beschraenkter H Vorrichtung zum Belueften von Abwaessern
DE1083771B (de) * 1958-08-08 1960-06-23 Hefefabrik Weingarten G M B H Vorrichtung zur intensiven Belueftung und Begasung von Fluessigkeiten
US3630498A (en) * 1968-07-31 1971-12-28 Namco Corp Apparatus for gasifying and degasifying a liquid
DE1784501A1 (de) * 1968-08-14 1971-08-19 Domzig Helmut Dr Ing Abwasser-Klaeranlage
CA949238A (en) * 1970-04-27 1974-06-11 John R. Mcwhirter System for gas sparging into liquid
DE2231061A1 (de) * 1972-06-24 1974-01-10 Menzel & Co Vorrichtung zum einbringen von gas in fluessigkeit
DE2559234A1 (de) * 1975-12-30 1977-07-14 Poepel Franz Prof Dr Ing Habil Einrichtung zur begasung von fluessigkeit
CH613383A5 (en) * 1976-05-04 1979-09-28 Resentec Umwelttechnik Gmbh Appliance for admixing liquids with gas and/or removing foam from a liquid surface
DE2823237C3 (de) * 1978-05-27 1981-03-12 Klöckner Kommunal- und Industriebau GmbH, 4500 Osnabrück Kläreinrichtung
DE2909724C2 (de) * 1979-03-13 1984-10-25 Steinmann & Ittig GmbH & Co KG, 4950 Minden Anlage für die biologische Abwasserreinigung
US4294696A (en) * 1980-01-25 1981-10-13 Water Pollution Control Corporation Swing diffuser
EP0047921A1 (fr) * 1980-09-15 1982-03-24 Menzel GmbH. + Co. Procédé et dispositif pour l'aération d'un liquide, particulièrement d'eau usée

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8300039A1 *

Also Published As

Publication number Publication date
DE3124213A1 (de) 1983-01-13
WO1983000039A1 (fr) 1983-01-06
EP0068362A1 (fr) 1983-01-05

Similar Documents

Publication Publication Date Title
DE2216767C3 (de) Vorrichtung zur biologischen Reinigung von Abwasser
DE2216304C3 (de) Einrichtung zur Umwälzung und Belüftung einer sich in einem Belebungsbecken einer Kläranlage befindenden Flüssigkeit
DE3224015C2 (de) Oberflächenbelüftungskreisel
DE2300157A1 (de) Verfahren und einrichtung zur reinigung von abwasser
EP1201296A1 (fr) Dispositif pour introduire un gaz dans un liquide
DE2643211A1 (de) Verfahren und vorrichtung zum reinigen von abluft
CH645817A5 (de) Beschaufelter rotor zum bewegen von fluessigem medium.
EP0081542A1 (fr) Procede et dispositif pour le traitement des eaux usees
EP0047921A1 (fr) Procédé et dispositif pour l'aération d'un liquide, particulièrement d'eau usée
DE2913132C2 (fr)
DE3228959C2 (de) Belüftungsvorrichtung für eine Flüssigkeit
DE2909724C2 (de) Anlage für die biologische Abwasserreinigung
EP0068363A1 (fr) Procédé et dispositif pour la gazéification d'un liquide
DE3610744A1 (de) Vorrichtung zur direkten belueftung und umwaelzung von insbesondere abwaessern
DE682136C (de) Vorrichtung zur Belueftung von Fluessigkeiten, insbesondere fuer Feinstbelueftungen in Gaerbottichen
DE1557181B2 (de) Vorrichtung zum Eintragen von Gasen in Flüssigkeiten
DE3034763A1 (de) Verfahren zum belueften einer fluessigkeit, insbesondere abwasser und vorrichtung zur durchfuehrung des verfahrens
EP0410959B1 (fr) Dispositif pour le traitement des eaux contenues dans un bassin
DE3324072A1 (de) Vorrichtung zur anaeroben abwasserreinigung
DE3031476C2 (de) Verfahren zur Belüftung von Abwasser in einem Belebungsbecken einer biologischen Abwasserreinigungsanlage
EP0739860A1 (fr) Procédé et dispositif pour le traitement biologique de l'eau usée
AT335930B (de) Als kreis- oder polygonbecken mit senkrechter achse ausgebildetes beluftungsbecken fur eine klaranlage
EP0792196A1 (fr) Procede et dispositifs de decontamination de matiere contaminee
DE3818646C2 (fr)
DE1958273A1 (de) Vertikalachsiger Oberflaechenbeluefter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 19830621

XX Miscellaneous

Free format text: VERFAHREN ABGESCHLOSSEN INFOLGE VERBINDUNG MIT 82105376.6/68362 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHTUNGSNUMMER) VOM 20.02.84.

XX Miscellaneous

Free format text: VERFAHREN ABGESCHLOSSEN INFOLGE VERBINDUNG MIT 82105376.6/68362 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) VOM 24.02.84.

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ZINK, JUERGEN