EP0520057A1 - Dispositif d'epuration biologique d'eaux usees - Google Patents

Dispositif d'epuration biologique d'eaux usees

Info

Publication number
EP0520057A1
EP0520057A1 EP92902383A EP92902383A EP0520057A1 EP 0520057 A1 EP0520057 A1 EP 0520057A1 EP 92902383 A EP92902383 A EP 92902383A EP 92902383 A EP92902383 A EP 92902383A EP 0520057 A1 EP0520057 A1 EP 0520057A1
Authority
EP
European Patent Office
Prior art keywords
container
shaft
wall
sedimentation
activation
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Withdrawn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
EP92902383A
Other languages
German (de)
English (en)
Inventor
Andreas DÜNNEBEIL
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.)
Deutsche Babcock Borsig AG
Original Assignee
Deutsche Babcock Borsig AG
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 Deutsche Babcock Borsig AG filed Critical Deutsche Babcock Borsig AG
Publication of EP0520057A1 publication Critical patent/EP0520057A1/fr
Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/003—Sedimentation tanks provided with a plurality of compartments separated by a partition wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0045—Plurality of essentially parallel plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/10—Settling tanks with multiple outlets for the separated liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
    • 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
    • C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
    • 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 device for the biological purification of waste water with the features of the preamble of claim 1.
  • wastewater In wastewater technology, the functions of buffering, biological pollutant degradation and sedimentation are mostly carried out in separate tanks.
  • the wastewater either flows through a geodetic slope or through separate pumps from one stage to the next.
  • a sludge treatment basin is known in which an inclined clarifier consisting of plates or tubes is arranged. This inclined clarifier flows from below and flows into the course of the clear phase. It serves as a sludge treatment stage.
  • the invention has for its object to design the generic device in such a way that it is suitable for the purification of medium-high contaminated wastewater with low equipment and operational outlay and hydraulic shocks can.
  • Simple construction means are used in the device according to the invention, so that there is a simple construction and simple operation with low energy input.
  • the special design of the sedimentation section results in good sedimentation behavior of the activated sludge in that the sedimentation point, which widens upwards, is flown vertically from below at a low filling level. With a larger filling level and the associated wider cross section, the sedimentation point is flowed horizontally by the wastewater from the activation part through the inclined clarifier.
  • the passage bores in the different heights to the downcomer ensure an even outflow of the cleaned water, whereby turbulence in the sedimentation part as a reaction of a locally excessive flow velocity in the downcomer is avoided. Hydraulic impacts from the feed to the tank are dampened in the drain shaft.
  • Fig. 1 shows the longitudinal section through a device for biological
  • FIG. 2 the top view on FIG. 1, FIG. 3 the longitudinal section through a device for biological
  • FIG. 4 shows the top view of FIG. 3.
  • a feed pipe 4 protrudes into the container 1, through which the waste water is fed.
  • the container 1 is divided by a partition 5 into an activation part 6 and a sedimentation part 7.
  • One or more self-priming submersible aerators 8a are arranged in the activation part 6, each sucking in air through a pipe 9 and supplying the bacteria present in the wastewater with the necessary oxygen and causing the wastewater to be mixed sufficiently.
  • plate aerators 8b (FIGS. 3, 4) can also be used.
  • the partition 5 between the activation part 6 and the sedimentation part 7 is closed-walled and inclined at an angle to the vertical.
  • the angle of inclination is 50 to 70, preferably 60 degrees. In this way, an upwardly expanding sedimentation part 7 is created.
  • the partition 5 ends at a vertical distance from the bottom 2 and at a lateral distance from the wall 3 of the container 1.
  • the waste water can flow from the bottom area of the container 1 from below Aeration part 6 penetrate into the sedimentation part 7, the average cross section being formed by the partition 5 and the wall 3 of the container 1.
  • an inclined clarifier 10 is arranged from a package of parallel fins or tubes. This inclined clarifier 10 extends above the partition 5 and forms the separation between the activation part 6 and the sedimentation part 7 in the upper part of the container. The inclination of the fins of the inclined clarifier 10 follows the inclination of the partition 5. The fins can also be at an angle to the partition 5 stand.
  • the container 1 is provided with an outlet shaft 11 which extends over the height of the container 1.
  • the drain shaft 11 is formed by a part of the container wall 3 and a shaft wall 12 facing the interior of the container.
  • a drain 13 is connected to the lower end of the drain shaft 11.
  • the upper end of the downcomer 11 is open to the inside of the container and forms an overflow 14 which is located below the upper edge of the container 1 and lies approximately in the same plane as the upper part of the inclined clarifier 10.
  • the shaft wall 12 facing the interior of the container is provided in several height levels with through bores 15, which represent the connection of the drain shaft 11 to the sedimentation part 7.
  • the through holes 15 can be provided with adjustable closure members. According to FIGS. 1 and 2, vortex throttles 16 are used as closure members, which connect to the through bores 15.
  • the vortex throttle 16 consists of a horizontal feed line that opens tangentially into a vortex chamber.
  • the vortex chamber is provided with an axial outlet opening and a vortex core ventilation.
  • the vortex throttle 16 has an improved flow characteristic compared to a simple bore, since the effective flow is less dependent on the fill level within the downcomer 11 than is the case with the simple through bore.
  • the outlet shaft is provided on the outside with lockable control openings 17.
  • a weir 20 is arranged below the inclined clarifier 10 at a distance from the shaft wall 12 of the discharge shaft 11.
  • the weir 20 forms, together with the shaft wall 12, a space which is open at the top and closed at the bottom and which, at least at the deepest point, is provided with a through hole 15 which opens into the drain shaft 11.
  • a flow baffle 21 is arranged within the activation part 6 and preferably runs parallel to the partition 5. This flow baffle 21 projects deeper than the partition 5 into the container 1, so that the passage cross section between the activation part 6 and the sedimentation part 7 is covered and the vortex movement within the activation part 6 is kept away from the sedimentation part 7.
  • the wastewater cleaned in the activation section 6 enters the sedimentation section 7.
  • the bacterial sludge flakes mostly settle in this sedimentation part 7 and slide back into the activation part 6.
  • the function of the sedimentation part 7 is different at different filling levels.
  • the waste water flows from the activation part 6 past the flow guide plate 21 and enters the sedimentation part L 7 from below. Up to a filling height h4 predetermined by the weir 20, no purified waste water flows out of the sedimentation part 7 through the downcomer 11. If the fill level in the container 1 increases further, one or more through holes 15 are acted upon up to a medium fill height h3.
  • the discharge increasing with the fill level cannot be introduced at any height from below into the sedimentation section 7, if the fill level in the container 1 exceeds the fill level h2, the plate pack of the inclined clarifier 10 becomes active, and the vertically charged sedimentation section 7 becomes a horizontally charged one . As a result, the outflow can be increased further via a plurality of through holes 15. Above the fill level h1, the waste water flows through the overflow 14 into the drain shaft 11.
  • baffles 22 are arranged vertically, with the partition 5 and the wall of the
  • a different flow behavior is formed in the chambers 23 in such a way that bacterial mass flows back into the activation part 6 from individual chambers 23, while in other chambers 23 Water with bacterial mass enters.
  • the interplay of entry and return flows leads to pulsations which take place independently of one another in the individual chambers 23 and do not influence one another.
  • suction pipes 24 or one or more shafts 25 are used to remove the excess sludge from the container 1.
  • the suction pipes 24 are passed through the wall 3 of the container 1 and protrude into the chambers 23 between the baffles.
  • the shaft 25 is arranged vertically in the activation part 6 and extends in height over a larger part of the container 1.
  • the shaft 25 is open at the upper end to the interior of the activation part 6 and is delimited by the wall 3 of the container 1 and one Activation part 6 facing inner wall 26.
  • the shaft 25 in the polygonal container 1 according to FIG. 4 can be arranged in a container corner.
  • the lower end of the shaft 25 tapers to form a funnel 27.
  • a sludge discharge 28 led out of the container 1 is connected to the funnel 27.
  • the sludge entering the shaft 25 from the activation zone 6 stays there for several hours before it is removed from the system as excess sludge via the sludge discharge 28. During the dwell time, the sludge thickens to about half its volume, so that the amount of sludge withdrawn from the activation point 6 can be halved.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

On utilise pour épurer biologiquement des eaux une cuve (1) subdivisée par une cloison (5) fermée, inclinée par rapport à la verticale en une partie d'activation (6) et en une partie de sédimentation (7). La cloison (5) se termine avec un espacement vertical par rapport au fond (2) et avec un espacement latéral par rapport à la paroi (2) de la cuve (1). Un clarificateur (10) à tôles inclinées pourvu de lamelles parallèles inclinées par rapport à la verticale est monté dans la partie supérieure de la cuve (1). La cuve (1) est pourvue d'un couloir d'écoulement (11) qui s'étend sur toute la hauteur de la cuve (1) et qui est relié à la partie de sédimentation (7) par des passages débouchants (15) ménagés à plusieurs hauteurs du couloir. Des tuyaux d'aspiration (24) qui pénètrent dans la partie de sédimentation ou un couloir (25) agencé dans la partie d'activation (7) servent à éliminer les boues excédentaires.
EP92902383A 1991-01-15 1992-01-11 Dispositif d'epuration biologique d'eaux usees Withdrawn EP0520057A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4100983 1991-01-15
DE19914100983 DE4100983A1 (de) 1991-01-15 1991-01-15 Vorrichtung zur biologischen reinigung von abwasser

Publications (1)

Publication Number Publication Date
EP0520057A1 true EP0520057A1 (fr) 1992-12-30

Family

ID=6423047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92902383A Withdrawn EP0520057A1 (fr) 1991-01-15 1992-01-11 Dispositif d'epuration biologique d'eaux usees

Country Status (4)

Country Link
EP (1) EP0520057A1 (fr)
JP (1) JPH05505341A (fr)
DE (1) DE4100983A1 (fr)
WO (1) WO1992012936A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329239C2 (de) * 1993-08-26 1997-09-11 Ivan Prof Dr Ing Sekoulov Verfahren und Vorrichtung zur biologischen Abwasserreinigung
DE19621156A1 (de) * 1996-05-14 1997-11-20 Wolfgang Luehr Klärwerk zur Aufbereitung von Wasser
FR2755874B1 (fr) * 1996-11-15 1999-02-05 Giennoise D Assainissement Soc Citerne de decantation
EP0890553A3 (fr) * 1997-07-11 2000-09-27 SHW Hölter Wassertechnik GmbH Procédé de pourification biologique d'eau usée et installation pour la mise en oevre de ce procédé
KR20020071287A (ko) * 2001-03-06 2002-09-12 주식회사 성광엔비텍 활성슬러지법의 반응조 내부 설치형 슬러지농축장치
AU2002311003A1 (en) * 2002-05-24 2003-12-12 Munters Euroform Gmbh Method, apparatus, and separation device for biological wastewater purification
DE102013101848A1 (de) * 2013-02-25 2014-08-28 Faritec GmbH & Co. KG Lamellenklärer
NL2015858B1 (en) 2015-11-26 2017-06-13 Ihc Holland Ie Bv Panflute overflow system.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE138555C (fr) *
DE1809755C3 (de) * 1968-11-19 1978-09-14 Neptune Microfloc, Inc., Corvallis, Oreg. (V.St.A.) Vorrichtung zur Klärung von Belebtschlamm
US3862033A (en) * 1969-05-22 1975-01-21 Separa Brno Inzenyrska Kancela Method for sedimentation of solid impurities from liquids
US3754656A (en) * 1970-09-28 1973-08-28 Kurita Water Ind Ltd Floatation separators
BE789233A (fr) * 1971-09-28 1973-01-15 Degremont Procede et appareil perfectionnes pour l'epuration biologique des eaux residuaires
FR2280817A1 (fr) * 1974-07-31 1976-02-27 Verbiese Procede et dispositif permettant l'etablissement d'une loi de repartition predeterminee du debit dans une veine fluide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9212936A1 *

Also Published As

Publication number Publication date
DE4100983A1 (de) 1992-07-16
WO1992012936A1 (fr) 1992-08-06
JPH05505341A (ja) 1993-08-12

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