EP3787767A1 - Dispositif de sédimentation - Google Patents

Dispositif de sédimentation

Info

Publication number
EP3787767A1
EP3787767A1 EP20703744.1A EP20703744A EP3787767A1 EP 3787767 A1 EP3787767 A1 EP 3787767A1 EP 20703744 A EP20703744 A EP 20703744A EP 3787767 A1 EP3787767 A1 EP 3787767A1
Authority
EP
European Patent Office
Prior art keywords
flow
sedimentation
side wall
inlet
opening
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
EP20703744.1A
Other languages
German (de)
English (en)
Inventor
Jorge Torras-Piqué
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.)
3P Technik Filtersysteme GmbH
Original Assignee
H2O Research GmbH
3P Technik Filtersysteme GmbH
H2O RES 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 H2O Research GmbH, 3P Technik Filtersysteme GmbH, H2O RES GmbH filed Critical H2O Research GmbH
Publication of EP3787767A1 publication Critical patent/EP3787767A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B01D21/2427—The feed or discharge opening located at a distant position from the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0217—Separation of non-miscible liquids by centrifugal force
    • 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
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • 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
    • B01D21/0087—Settling tanks provided with means for ensuring a special flow pattern, e.g. even inflow or outflow
    • 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
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2411—Feed mechanisms for settling tanks having a tangential inlet
    • 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
    • B01D21/2444—Discharge mechanisms for the classified liquid
    • 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
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2221/00—Applications of separation devices
    • B01D2221/12—Separation devices for treating rain or storm water
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001—Runoff or storm water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus

Definitions

  • the invention relates to a sedimentation device for material contained in liquid, in particular rainwater.
  • Such sedimentation devices have been known for a long time.
  • An important area of application of such sedimentation facilities is the separation of material from rainwater, especially dirt, dust, dirt, etc. that are swept along in a rain event.
  • rainwater retention systems filled after heavy rainfall there is a need to divert the accumulated rainwater.
  • Discharging the rainwater that has been viewed without the interposition of a sedimentation device into the sewer system or for the purpose of seepage is problematic.
  • a sedimentation device in the form of a hydrodynamic treatment device is described, for example, in EP 1 651 325 B1.
  • the treatment device disclosed there has a cylindrical outer wall, on the jacket surface of which an inlet for liquid is formed.
  • the inlet leads into a storage space, which in turn opens into an outer separation chamber.
  • On the underside of the outer separation chamber there is a funnel-shaped base element with a central opening through which the outer separation chamber chamber is connected to a sedimentation space or sump.
  • the outer separation chamber is penetrated by an inner separation chamber, which also has a cylindrical chamber wall. In the outer surface of this chamber wall, inlet openings are formed into which liquid, in particular water, can flow from the outside to the inside into the inner separation chamber.
  • the inner separation chamber is closed at the bottom, so that after entering the inner separation chamber, liquid rises and reaches an outlet also formed on the outer surface of the chamber wall and flows from there out of the treatment device.
  • the flow through the treatment device thus takes place from the outside to the inside, the flow initially being directed downwards over the sump and from there directed upwards again.
  • EP 2 957 683 B1 describes a wastewater treatment arrangement which has a shaft in which a pair of annular spaces is received with an annular space that is upper in the vertical direction of the shaft and a lower annular space.
  • the sewage treatment arrangement is flowed through in the upstream, i.e. on the outer surface of the shaft there is an inlet and an outlet located higher than that, with several pairs of annular spaces being received in the shaft interior and flowed through in the upstream so that suspended matter or suspended matter in the water or in the liquid Sediments are retained.
  • the object of the invention is to create a sedimentation device which is simple in construction and inexpensive and with which a high throughput of liquid to be cleaned is possible. This object is achieved by a sedimentation device with the features of independent claim 1. Developments of the invention are presented in the subclaims.
  • the sedimentation device according to the invention for material contained in liquid, in particular rainwater has a sedimentation insert which, when in use, is inserted into a shaft element, the sedimentation insert having an inlet chamber, which is provided with an inlet chamber equipped with an inlet opening on the side.
  • the flow takes place from the inside to the outside and from there via an overflow to the outlet opening.
  • the annular space between the shaft wall and the Sedimentationsein rate form an outer chamber, while the interior of the Sedi mentation insert can form the inner chamber, which is flown against the next before the liquid enters the outer chamber.
  • the shaft elements that is to say the sedimentation insert can be easily inserted into a shaft element. Liquid therefore runs into the first An inlet chamber which is designed in such a way that a liquid flow is generated that enables a high throughput through the sedimentation insert.
  • the liquid flow is broken by the flow breaker device, which prevents deposited sediments from being whirled up again.
  • the liquid that rises after passing the outlet opening is largely free of sediments and then passes through the overflow to the outlet opening.
  • the inlet chamber side wall is cylindrical.
  • the inlet chamber has an inlet section assigned to the inlet opening and an outlet section assigned to the outlet opening downstream of the inlet section in the flow direction.
  • the outlet section is expediently designed in the shape of a funnel.
  • the inner outlet chamber side wall is formed by the inlet chamber side wall.
  • the outlet chamber it would also be conceivable for the outlet chamber to have an inner outlet chamber side wall which is formed separately from the inlet chamber side wall.
  • a flow guiding element is arranged in the flow direction after the inlet opening in the inlet chamber in such a way that inflowing liquid can be set in a tangential flow.
  • the flow guide element can be used, for example, as a deviation lying in the flow path of the liquid flowing in through the inlet opening. ser, in particular in the form of a deflector plate.
  • the overflow is designed as a weir.
  • the weir is formed as a prong, with a plurality of prongs forming the upper edge of the outer discharge chamber side wall in the circumferential direction of the outer discharge chamber side wall.
  • the prongs expediently have the shape of isosceles triangles.
  • other overflow cross-sections in particular other triangular geometries, can also be used. It is essential that a uniform overflow over the weir is possible, even if the weir is not aligned exactly horizontally.
  • the flow breaker has at least one, in particular a plurality of flow breaker elements transverse to the flow direction. The decisive factor here is that a tangential flow prevailing in the inlet chamber is broken by means of the flow breaker elements so that the sump or sedimentation space below the inlet chamber is free from a turbulent flow, which prevents sediments from being swirled up.
  • the flow breaker elements are connected downstream of the outlet opening in the direction of flow.
  • the flow breaker elements are sword-like.
  • the flow breaker elements form a stand on which the sedimentation insert is in the position of use in the shaft element.
  • the flow breaker device has a grid which is preferably arranged in or below the outlet opening.
  • the discharge opening is expediently arranged on the outer discharge chamber side wall.
  • the outlet opening is adjustable in height. This makes it possible to compensate for a height difference between a drain opening formed on the shaft element and the drain opening of the sedimentation insert.
  • the height adjustment can be carried out, for example, by a height-adjustable slide with a diaphragm opening.
  • the Sedimentationsein set consists of plastic.
  • the sedimentation insert can be a plastic part produced by means of rotational molding. A preferred embodiment is shown in the drawing and is explained in more detail below. In the drawing show:
  • Figure 1 is a longitudinal section through a preferred embodiment
  • FIG. 2 is a perspective top view of the sedimentation device from FIG. 1
  • FIG. 3 shows a perspective view of the sedimentation insert of the sedimentation device from FIG. 1
  • FIG. 4 shows a perspective view of the sedimentation insert from FIG. 1 from a different direction compared to FIG.
  • FIG. 5 shows a side view of the sedimentation insert from FIG. 3 and FIG. 5
  • FIGS. 1 to 6 show a preferred embodiment of the sedimentation device 11 according to the invention.
  • the sedimentation device 11 is shown below by way of example when it is used to separate material contained in rainwater, in particular Sediments in the form of
  • the sedimentation device 11 can for example be upstream or downstream of a rainwater retention basin or be arranged in the rainwater retention basin, so that rainwater accumulated in the rainwater retention basin can be drained off via the sedimentation device.
  • the use of the sedimentation device 11 according to the invention is not coupled to a rainwater retention basin, but the sedimentation device 11 can be used wherever rainwater is discharged into the sewer system, into a body of water or for seepage.
  • the sedimentation device 11 has a sedimentation insert 12 which is inserted into a box element 13 in the position of use.
  • the shaft element 13 shown by way of example in FIG. 1 usually consists of concrete material and is buried in the ground.
  • the shaft element 13 has a shaft casing 14 which is open on the top and is closed on the bottom by a shaft bottom 15.
  • the lower part of the shaft element 13 and the shaft bottom 15 together form a sump or Se dimentsammelraum.
  • the shaft jacket 14 expediently has a cylindrical shape.
  • the sedimentation insert 12 can be inserted into the shaft element 13 from above in a simple manner.
  • the manhole element 13 on the manhole jacket 14 has a manhole inlet opening 16 and a manhole outlet opening 17 arranged diametrically with respect to a manhole element longitudinal axis of this opposite to the manhole jacket 14.
  • the sedimentation insert 12 is expediently a plastic component.
  • the sedimentation insert 12 can be made, for example, by plastic rotational molding.
  • the sedimentation insert 12 has an inlet chamber 18, which is delimited by an inlet chamber side wall 20 equipped with a lateral inlet opening 19.
  • the inlet opening 19 of the inlet chamber 18 is connected to the shaft inlet opening 16 via an inlet pipe 21, the inlet pipe 21 protruding beyond the outside of the shaft casing 14.
  • the inlet chamber 18 has an inlet section 22 assigned to the inlet opening 19.
  • the inlet section 22 is delimited by a cylindrical part of the inlet chamber side wall 20.
  • the inlet chamber 18 has an outlet opening 23 on its underside, with the outlet opening 23 being assigned a flow breaker device for the flow breaking of a liquid flow generated between the inlet opening 19 and an outlet opening 24 in a flow direction 25.
  • the inlet chamber 18 has an outlet section 27, which is connected downstream of the inlet section 22 of the inlet chamber 18 in the flow direction 26, is assigned to the outlet opening 23 and is designed in the form of a funnel in the example.
  • the outlet section 27 expediently forms a hydrodynamic separator.
  • the outlet opening 23 is located on the underside of the outlet section 27.
  • a flow guide element 28 in the form of a deflector is arranged in the flow direction 26 after the inlet opening 19 in the inlet chamber 18 in such a way that inflowing water in a tangential flow is displaced.
  • the flow guide element 28 in the form of the deflector is designed as an angle profile, which is expediently connected in one piece to the inlet chamber side wall 20.
  • the deflector has a vertical leg 29, which, as shown in Figure 2, runs in the vertical direction of the inlet chamber 18 and is inclined relative to the mouth surface of the inlet opening 19 in such a way that inflowing water from the inner wall of the vertical leg 29 serving as a guide surface 30 bounces off and in the direction of the inner wall of the inlet - chamber side wall 20 is guided, where a tangential flow is then generated.
  • the vertical limb 29 is connected in one piece to a horizontal limb 31 which is connected at an angle to the vertical limb 29 and is also connected in one piece to the inlet chamber side wall 20. As shown in FIGS.
  • the sedimentation insert 12 has an outlet chamber 32 which surrounds the inlet chamber 18 in a ring shape and is delimited by an inner outlet chamber side wall, a bottom 33 and an outer outlet chamber side wall 34.
  • the inner outlet chamber side wall is formed in the example by the inlet chamber side wall.
  • the bottom of the outlet chamber 32 and the outer outlet chamber side wall 34 are integrally connected to the inlet chamber side wall 20. As shown in particular in Figure 2, the outlet opening 25 is located at the limit of the
  • Outlet chamber 32 in particular on the outer outlet chamber side wall 34.
  • the outlet opening 25 is adjustable in height.
  • the height adjustability is achieved in that the outlet opening 25 is part of a slide 35, the height is adjustable on a slide guide 36 on the outer run chamber side wall 34 from.
  • the outlet opening 25 is connected to the shaft outlet opening 17 via an outlet pipe 37.
  • the height adjustment of the outlet opening 25, in particular by means of the slide 35, serves to compensate for a difference in height between the outlet opening 25 and the shaft outlet opening 17.
  • the outer discharge chamber side wall 34 is designed as an overfall 38.
  • the overflow 38 is designed as a weir in the example, expediently as a serrated weir.
  • the weir has a row of prongs 39 forming the upper edge of the outer discharge chamber side wall 34 with a plurality of prongs 40 arranged in the circumferential direction, in particular at a uniform distance from one another.
  • the prongs 40 which can also be referred to as teeth, have the shape in the example isosceles triangles.
  • triangular overflow cross-sections 41 in particular the shape of isosceles triangles, are formed between adjacent prongs 40.
  • the triangular overflow cross-sections 41 enable a uniform overflow of water which flows into the outlet chamber from the outside, overflowing the serrated weir.
  • the sedimentation insert 12 is equipped with a flow breaker device 24.
  • the flow breaker device 24 is assigned to the outlet opening 23 and serves to break the flow of the turbulent tangential flow in the inlet chamber. The purpose of this is that material deposited on the shaft bottom 15 is not whirled up again.
  • the stream flow breaker device 24 has a plurality of flow breaker elements 42a-c standing transversely to the flow direction. As shown in particular in FIGS. 3 and 4, the flow breaker elements 42a-c are connected downstream of the outlet opening 23 in the flow direction 26, that is, they are located below the inlet chamber 18.
  • the flow breaker elements 42a-c are sword-like in the example and are shown in the example in the form of three plate-like flow breaker elements 42a-c arranged in a star shape at regular intervals from one another.
  • the flow breaker elements 42a-c are integrally connected to one another and together form a stand 43 for the inlet and outlet chambers 18, 32 located above. For example, it is possible that the lower edge of the inlet chamber side wall 20 sits on the stand 43. As already mentioned, it is essential that the flow breaker elements are perpendicular to the direction of flow.
  • a tangential flow arises in the inlet chamber, which flow is broken by the flow breaker elements aligned transversely thereto, which are aligned in the vertical direction.
  • stiffening webs 45 are arranged between each two adjacent flow breaker elements 42, which give the stand 43 sufficient stability.
  • the flow breaker device 24 also has a grid 46, which is arranged slightly below the outlet opening 23 in the example shown. The grid 46 also serves to break the turbulent tangential flow in the inlet chamber 18.
  • Exit opening 23 emerges into the interior of the shaft element 13.
  • the flow breaker device 24 with the two plate-like flow breaker elements 42 ensures that the flow is calm, that is, the breaking of the tangential flow. Sediments that were washed away settle at the bottom of the shaft 15.
  • the flow breaker elements 42 which are arranged in a star shape, prevent a tangential flow at the shaft bottom 15.
  • the rainwater flowing over is essentially free of the sediments deposited on the shaft bottom 15.
  • the rainwater reaches the outlet chamber 32 via the serrated weir, from where it can only flow off via the outlet opening 25.
  • the precipitation water purified in this way then flows off via the outlet opening 25 and from there it can be discharged into the sewer system, into a body of water or to infiltration.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Sewage (AREA)

Abstract

L'invention concerne un dispositif de sédimentation pour un matériau contenu dans un liquide, en particulier de l'eau de pluie, comprenant un insert de sédimentation (12), qui est inséré dans un élément de conduit (13) en position d'utilisation, l'insert de sédimentation (12) présentant une chambre d'entrée (18), qui est limitée par une paroi latérale de chambre d'entrée (20) munie d'une ouverture d'entrée (19) latérale et présentant une ouverture de sortie (23) sur sa face inférieure, un dispositif brise-flux (24) pour briser le flux d'un flux de liquide généré dans une direction d'écoulement (26) entre l'ouverture d'entrée (19) et une ouverture de sortie (25) étant associé à l'ouverture de sortie (23), et l'insert de sédimentation présentant une chambre de sortie (32) entourant de manière annulaire la chambre d'entrée, laquelle est limitée par une paroi latérale intérieure de chambre de sortie, un fond (33) et une paroi latérale extérieure de chambre de sortie (34), l'ouverture de sortie (25) étant réalisée sur la délimitation de la chambre de sortie (32), et la paroi latérale extérieure de chambre de sortie (34) étant réalisée sous la forme d'un déversoir (38).
EP20703744.1A 2019-03-07 2020-02-05 Dispositif de sédimentation Pending EP3787767A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019203116.1A DE102019203116A1 (de) 2019-03-07 2019-03-07 Sedimentationseinrichtung
PCT/EP2020/052846 WO2020177966A1 (fr) 2019-03-07 2020-02-05 Dispositif de sédimentation

Publications (1)

Publication Number Publication Date
EP3787767A1 true EP3787767A1 (fr) 2021-03-10

Family

ID=69468573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20703744.1A Pending EP3787767A1 (fr) 2019-03-07 2020-02-05 Dispositif de sédimentation

Country Status (6)

Country Link
US (1) US11167224B2 (fr)
EP (1) EP3787767A1 (fr)
AU (1) AU2020230787A1 (fr)
BR (1) BR112020025554A2 (fr)
DE (1) DE102019203116A1 (fr)
WO (1) WO2020177966A1 (fr)

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FR3110859B1 (fr) * 2020-05-28 2022-07-08 Techneau Cuve de traitement d’eaux avec des goulottes de guidage
DE102022113532A1 (de) 2022-05-30 2023-11-30 3P Technik Filtersysteme Gmbh Sedimentationseinrichtung
CN115779506B (zh) * 2022-12-16 2024-05-17 湖南有色金属职业技术学院 一种有色金属矿浆多级沉淀装置

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Also Published As

Publication number Publication date
US11167224B2 (en) 2021-11-09
BR112020025554A2 (pt) 2021-09-28
DE102019203116A1 (de) 2020-09-10
US20200282339A1 (en) 2020-09-10
WO2020177966A1 (fr) 2020-09-10
AU2020230787A1 (en) 2021-01-14

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