EP2964838B1 - Filterungsvorrichtung für eine temporäre sanitäre einrichtung auf einer baustelle sowie verfahren zur temporären installation - Google Patents

Filterungsvorrichtung für eine temporäre sanitäre einrichtung auf einer baustelle sowie verfahren zur temporären installation Download PDF

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Publication number
EP2964838B1
EP2964838B1 EP14715046.0A EP14715046A EP2964838B1 EP 2964838 B1 EP2964838 B1 EP 2964838B1 EP 14715046 A EP14715046 A EP 14715046A EP 2964838 B1 EP2964838 B1 EP 2964838B1
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EP
European Patent Office
Prior art keywords
upstream
filtering device
walls
downstream
filtering
Prior art date
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Not-in-force
Application number
EP14715046.0A
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English (en)
French (fr)
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EP2964838A2 (de
Inventor
Benoît KLEIN
Jean-Philippe RIA
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Eiffage Infrastructures SAS
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Eiffage Infrastructures SAS
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Publication of EP2964838A2 publication Critical patent/EP2964838A2/de
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Publication of EP2964838B1 publication Critical patent/EP2964838B1/de
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    • 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

Definitions

  • the invention relates to the field of temporary management of runoff water, on construction sites of civil engineering works, as soon as earthworks have started.
  • the invention relates to a filtering device for a temporary purification installation, to a box included in such a filtering device and to a temporary purification process using such a filtering device.
  • a temporary sanitation installation which includes one or more basins and usually one or more ditches that are dug directly into the ground of the site.
  • the ponds are positioned at a low point on the site to collect and drain the runoff that flows to the site, especially in bad weather.
  • the basins, and if necessary the ditches include a flow passage, generally delimited by two walls obtained by forming the soil of the site in an appropriate manner, for example with the aid of a small mechanical shovel, handy.
  • filtration devices in the runoff of the runoff water. through the flow passage.
  • the filtration device (s) make it possible to control the flow of runoff water, in particular by slowing it down, diffusing and regulating it. Controlling the flow of run-off water not only limits the degradation of the walls of the temporary sewerage system but also keeps runoff water in the temporary sanitation equipment for a sufficient period of time, according to one laminar flow regime, to ultimately improve settling and thus sanitation. Another part of the non-settled suspended solids may also be trapped by the filtration device.
  • the patent application US 2010/0200480 A1 discloses a raised vegetated ditch to remove solid and dissolved contaminants in rainwater.
  • This vegetated ditch consists of a permeable, compressible outer shell and a porous and water-permeable inner zone.
  • This ditch also includes cylindrical inserts placed in vertical cylindrical cavities, which pass right through the elevated vegetated ditch. Plants may be disposed within these cylindrical inserts which then comprise potting soil.
  • the patent application US 2006/0263151 A1 discloses a method and a system for treating liquid effluents from, for example, rainfall, irrigation, wastewater, said treatment to remove solutes said effluents.
  • a modular dam is used in an excavation in which runoff is likely to accumulate.
  • the modular dam consists of modules containing a reactive medium whose surface is able to react with or trap the solutes of the polluting substance.
  • the patent application US 2007/0284312 A1 discloses a waste collection system of the wet cement waste type generated by the laying of a coating on the walls and the pool bottom.
  • This system comprises a metal grid cage intended to contain a container bag and a filtration bag of the thick cementitious slurry constituting the waste to be treated.
  • a filtration device used to date is in the form of a straw filter made in situ, directly on the site, by stacking straw as a filter material between two screens maintained on stakes driven directly into the ground at flow passage.
  • the upper edges of the upstream, downstream and lateral walls delimit an upper opening.
  • the weight of the box may be between 100 and 200 kg, or better still between 100 and 150 kg.
  • the weight of the box can be between 50 and 150 kg, or better still between 80 and 120 kg.
  • the weight of the box can be between 30 and 100 kg, or better still between 40 and 85 kg.
  • the invention thus proposes a prefabricated, prefabricated filtration device that is easy and quick to set up in the flow passage.
  • the standardization of the device of the invention has particularly favorable economic effects.
  • the side walls (10, 10 ') of the box are at least partially solid.
  • the upper opening of the box allows its easy and quick filling with filter material on site. The same goes for emptying the filter material out of the box. It is possible to reversibly close this opening.
  • the number of boxes of the device is less than or equal to -in an increasing order of preference- 10; 8; 6; 4; 3; 2.
  • the box of the filtration device advantageously has an overall rigidity, provided by any appropriate means such as the nature (eg metal / polymer) of the materials used and / or the geometry of the box, making it easily reusable.
  • all or part of the walls can be made from a rigid material and / or non-deformable and / or non-compressible.
  • the filtration device requiring only a replacement of the filter material is easy to maintain.
  • the filtration device also has a better adaptability, on the one hand, because of its shape or its standard shapes configured for the most common natural basins, ditches and / or streams (rivers-streams), and on the other hand, because of the possibility that it offers to be able to use several types of filter material.
  • the filtration device has, moreover, a simple and reproducible structure, making it easily usable in a modular filtration system composed of several associated filtration chambers associated.
  • the device according to the invention also finds its interest in its lightness and therefore its maneuverability which allows its implementation using construction equipment (excavators) just as light and manageable.
  • Each of the upstream and downstream walls may have an upper edge opposite the bottom and may have a dimension (dy) measured in a transverse direction (Y) perpendicular to the direction (X), the perforated portion or portions of each of the upstream and downstream walls. extend at least in the vicinity of the upper edge over the entire dimension (dy) of said wall.
  • the openwork portion (s) of each of the upstream and downstream walls of the box comprises or comprises a lattice of which at least a portion of the stitches each have a surface (or passage section) less than or equal to-given below in cm 2 and in ascending order preferably 16; 14; 12; 10; 8; 6; 5.
  • the opening or passage section may be between 4 and 10 cm 2 , or in a practical case be of the order of 4.5 cm 2 .
  • the box has a dimension (dx) measured in the direction (X) and corresponding to the filter passing length, such that (dx) is greater than or equal to - given below in m and in increasing order of preference - 0.7; 0.8; 0.85; 0.9; 1.0; 1,2; 1.5.
  • (dx) may be between 0.5 and 1.0 m, or better still between 0.7 and 0.9 m.
  • (dx) may be between 0.8 and 1.5 m, or better still between 0.9 and 1.2 m.
  • (dx) may be between 1.0 and 3.0 m, or more preferably between 1.5 and 2.5 m.
  • the box may have a cross section relative to the direction (X) substantially trapezoidal, the bottom of the box having a substantially horizontal central portion and two inclined lateral portions extending on either side of the central portion.
  • the filtration device may further comprise an anchoring member of the box in the flow passage of the temporary sanitation equipment, the anchoring member extending from the box opposite the receiving volume. .
  • the box may have an outer surface opposite to the receiving volume, the anchor member comprising an anti-scour plate extending transversely to the longitudinal direction from the outer surface of the box.
  • the anchoring member may comprise a plurality of projecting legs relative to the bottom of the box.
  • the filtration device may further comprise a removable filtering layer adapted to cover the bottom and the upstream and downstream walls inside the reception volume and on which the filter material is intended to be arranged. Such arrangements facilitate the maintenance of the filtration device.
  • the downstream wall may also comprise a solid part in the vicinity of the bottom.
  • the perforated portion of the downstream wall may include a discharge opening adapted to be connected to a discharge pipe.
  • At least one of the upstream and downstream walls can be removable relative to the bottom.
  • the box may further comprise at least one connecting member connecting the upstream and downstream walls away from the bottom.
  • the filtering material is chosen so that the void volume percentage is at least given below in% v / v and in a preferably increasing order; 20; 25; 30 ; 35; 40; 45; 50; for example between 40 and 60%; according to the invention, this filter material being selected from the group comprising: gravel, sand, straw, wood chips, bark chips washed gravel, coconut chips and mixtures thereof.
  • the filter material is adapted to retain elements having a larger dimension greater than or equal to 0.01 mm, preferably 0.05 mm; for example between 0.1 and 20 mm.
  • the filtration device can be formed by modular boxes.
  • the Figures 1 to 3 represent a first embodiment of a filtration device for use on a civil engineering site, for example public works, to drain the runoff water received by the yard.
  • a civil engineering site for example public works
  • the ditch is a per se runoff flow runoff.
  • the installation could also include a settling basin, in the wall of which may be arranged one or more flow passages.
  • the bed of a natural river or stream could also be an integral part of the facility.
  • These hollow elements are intended to recover runoff water and to decant them to reduce their content of suspended solids, before their release into the environment.
  • the filtration device is placed in the ditch flow passage (basin or stream) to diffuse and regulate the flow of runoff water so as, on the one hand, to limit the turbulence likely to erode the walls of the ditch (of the basin or stream) and, on the other hand, to maintain the runoff in the ditch (in the basin or stream) for a sufficiently long time, allowing a satisfactory decantation.
  • the filtration device comprises a box, made for example of a rigid material such as a metallic material (for example galvanized), of generally parallelepipedal shape.
  • the box comprises a bottom, plane and rectangular in the first embodiment, extending in a direction X (XYZ mark on the figure 1 ).
  • Upstream and downstream walls respectively extend from two opposite edges of the bottom, transversely to the longitudinal direction X, to the upper edges away from the bottom.
  • the upstream and downstream walls parallel to one another, are, in the first embodiment, planar and rectangular and have a dimension (dy) in the transverse direction Y.
  • Each of the upstream and downstream walls has a perforated part which extends, in the first embodiment, over the entire surface of the upstream and downstream walls.
  • the perforated portions each comprise a lattice (or network of openings), constituted by a plurality of meshes (or openings) equidistant extending in at least one direction and, preferably, in two intersecting directions and in particular two perpendicular directions.
  • each of the upstream and downstream walls could be openwork.
  • the perforated portion then preferably extends from the upper edge over an entire dimension (dy), measured in a transverse direction Y perpendicular to the direction X, of the upstream or downstream wall in question.
  • the box also comprises two side walls, solid, for example galvanized steel extending from the other two opposite edges of the bottom between the upstream and downstream walls.
  • the lateral walls of dimension (dx) in the X direction, constitute connecting members which connect the upstream and downstream walls at a distance from the bottom and which, with the use of a rigid material, provide the casing with rigidity. together.
  • one or more connecting members could be provided in any suitable form, such as in the form of a connecting bar, for connecting the upstream and downstream walls away from the bottom.
  • the box comprises four corner angles extending along each corner of the box, on an outer surface of the box. Corner angles thus participate in the overall rigidity of the box and extend beyond the bottom of the box to form feet to ensure anchoring of the box in the flow passage.
  • the box may have a dimension (dx) (or filter passing length) measured in the X direction of 1 m, a dimension (dy) depending on the direction Y of 1.50 m and a height measured in a vertical direction Z perpendicular to the longitudinal X and transverse directions Z of 1 m.
  • the bottom, the upstream and downstream walls and the side walls delimit a receiving volume adapted to receive a filter material in the form of a mass of filter elements, such as straw, washed gravel, sand, chips. coconut or other.
  • a filter material in the form of a mass of filter elements, such as straw, washed gravel, sand, chips. coconut or other.
  • the ditch including the flow passage to allow runoff flow is dug into the ground of the site, for example the shovel.
  • the ditch is delimited by two substantially parallel walls defining a flow direction.
  • the box is disposed across the ditch, in the flow passage, for example by means of the mechanical shovel, so that the bottom extends in the flow direction A of the runoff water and that the upstream and downstream walls extend transversely to the flow direction A of runoff water.
  • the feet and possibly a lower part of the box near the feet are driven into the ground.
  • the anchorage and the dimensions of the caisson are designed to ensure a complete capture of the incoming flow and to avoid water contours.
  • a removable filter layer for example in the form of a geotextile, can be placed inside the receiving volume to cover the bottom and the upstream and downstream walls.
  • the filtering material is disposed in the receiving volume, if necessary, on the filtering layer by an upper opening delimited by the upper edges of the upstream, downstream and lateral walls.
  • the runoff can flow through the upstream and downstream walls and the filter material, the filtration device then serving as a break energy to reduce flow velocities (in the case of steep ditches), thus limiting erosion and suspension of fine materials, to promote the settling and accumulation of fines upstream of the filtration device.
  • the filtration device comprises a box including a bottom, upstream and downstream walls of dimension (dy) -for example 1m30- in the Y direction (XYZ mark figure 4 ) and side walls, of dimension (dx) - for example of 2m00- according to the direction X (XYZ mark figure 4 ), delimit a receiving volume adapted to receive the filter material.
  • the bottom for example galvanized steel (folded monobloc steel sheet), and has a cross section relative to the longitudinal direction X substantially trapezoidal.
  • the bottom has a substantially horizontal central portion and two inclined lateral portions extending on either side of the central portion.
  • the downstream wall further comprises a solid portion extending over a portion of the height of the downstream wall in the vicinity of the bottom. Above this solid portion, the downstream wall has a perforated portion extending to the upper edge.
  • the openwork portion comprises a network of openings. The solid part as the perforated part extend over the entire width of the front wall.
  • the heights of the full parts and openwork can vary to adapt the box to the flow to control.
  • the perforated portion of the downstream wall may comprise a discharge opening adapted to be connected to a discharge pipe.
  • the downstream wall can be removable from the bottom.
  • the filtration device also comprises an anti-scour plate having a notch corresponding to the section of the box.
  • the anti-scour plate can thus extend transversely with respect to the longitudinal direction X from the outer surface of the box to limit the erosion of the ditch.
  • the box can be positioned in a trapezoidal ditch (corresponding to what is produced by the bucket of mechanical shovels) and filled with filter material.
  • the upstream and downstream walls comprising a solid part or, as represented on the figure 8 a lower perforated portion having a passage section different from that of an upper perforated portion, allow for an enhancement of the fines retention volume and raising of the water thread to limit the supply of fines.
  • the anti-scour plate is stuck across the ditch to allow complete channelization of the flow and avoid erosion-related water diversions.
  • the bottom of the box and the upstream and downstream walls can be independently removable or articulated, in particular to be able to easily empty the box.
  • anchoring means such as eyelets could be provided on the boxes, for example at each of the upper corners of the box.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Filtering Materials (AREA)
  • Filtration Of Liquid (AREA)

Claims (13)

  1. Filtervorrichtung (1; 1') für eine provisorische Entwässerungsanlage (2) einer Tiefbau-Baustelle, wobei diese provisorische Entwässerungsanlage mindestens ein ausgehöhltes Element (2) aufweist, das vorzugsweise aus mindestens einem Becken und/oder mindestens einem Graben und/oder mindestens einem natürlichen Wasserlauf besteht; wobei das ausgehöhlte Element (2) mindestens einen Strömungsdurchgang (3) der Rieselwasser gemäß einer Strömungsrichtung (A) bildet und/oder enthält,
    wobei die Filtervorrichtung (1; 1') mindestens einen Kasten (5; 5') enthält, der einerseits ein Filtermaterial (16) enthält, das in Form einer Anhäufung von Filterelementen vorliegt, und der andererseits mindestens einen Boden (6; 6'), stromaufwärtige (7; 7') und stromabwärtige Wände (8; 8') und Seitenwände (10; 10') aufweist, die ein Aufnahmevolumen (15; 15') für das Filtermaterial (16) definieren, wobei die stromaufwärtigen (7; 7') und stromabwärtigen Wände (8; 8') sich vom Boden (6; 6') gemäß einer Querrichtung (Y) bezüglich einer Richtung (X) erstrecken, die dazu bestimmt ist, gemäß der Strömungsrichtung (A) der Rieselwasser angeordnet zu sein, wobei die stromaufwärtigen (7; 7') und stromabwärtigen Wände (8; 8') vorzugsweise parallel sind, wobei jede der stromaufwärtigen (7; 7') und stromabwärtigen Wände (8; 8') mindestens einen gebrochenen Teil (23; 23') aufweist, um die Strömung der Rieselwasser durch die stromaufwärtigen (7; 7') und stromabwärtigen Wände (8; 8') zu erlauben;
    wobei der Kasten (5; 5'):
    • eine offene Oberseite aufweist, über die das Filtermaterial in den Kasten (5; 5') nach dessen Einsetzen in den Strömungsdurchgang (3) eingeführt werden kann;
    • ein Gewicht niedriger als oder gleich - nachfolgend in kg und gemäß einer bevorzugt aufsteigenden Reihenfolge angegeben- 350; 300; 250; 200; 150; 100; 50 hat;
    dadurch gekennzeichnet, dass der Kasten aus einem steifen Material hergestellt ist;
    wobei das Filtermaterial ausgewählt wird aus Kies, Sand, Stroh, Holzspänen, Rindenspänen, gewaschenem Kies, Kokosspänen und ihren Mischungen;
    wobei der oder die gebrochenen Teile jeder der stromaufwärtigen und stromabwärtigen Wände des Kastens ein Gitter enthalten, von dem mindestens ein Teil der Maschen je einen Durchgangsquerschnitt zwischen 4 und 10 cm2 hat.
  2. Filtervorrichtung (1; 1') nach Anspruch 1, dadurch gekennzeichnet, dass die Seitenwände (10; 10') des Kasten zumindest zum Teil massiv sind.
  3. Filtervorrichtung (1; 1') nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie eine Anzahl von Kästen geringer als oder gleich -in einer bevorzugt aufsteigenden Reihenfolge- 10; 8; 6; 4; 3; 2 enthält.
  4. Filtervorrichtung (1; 1') nach mindestens einem der vorhergehenden Ansprüche, wobei das Filtermaterial so gewählt wird, dass der Vakuum-Volumenanteil mindestens -nachfolgend in % V/V angegeben und gemäß einer bevorzugt aufsteigenden Reihenfolge- 15; 20; 25; 30; 35; 40; 50 ist; wobei dieses Filtermaterial vorzugsweise aus der Gruppe ausgewählt wird, die enthält: Kies, Sand, Stroh, Holzspäne, Rindenspäne und ihre Mischungen.
  5. Filtervorrichtung (1; 1') nach mindestens einem der vorhergehenden Ansprüche, wobei der Kasten eine Abmessung (dx) gemessen gemäß der Richtung (X) und entsprechend der Filterdurchgangslänge derart aufweist, dass (dx) größer als oder gleich -nachfolgend in m und gemäß einer bevorzugt aufsteigenden Reihenfolge angegeben- 0,7; 0,8; 0,85; 0,9; 1,0; 1,2; 1,5 ist.
  6. Filtervorrichtung (1') nach mindestens einem der vorhergehenden Ansprüche, wobei der Kasten (5') einen im Wesentlichen trapezförmigen Querschnitt bezüglich der Richtung (X) aufweist, wobei der Boden (6') einen im Wesentlichen waagrechten zentralen Abschnitt (20') und zwei geneigte Seitenabschnitte (21') aufweist, die sich zu beiden Seiten des zentralen Abschnitts (20') erstrecken.
  7. Filtervorrichtung (1; 1') nach mindestens einem der vorhergehenden Ansprüche, die außerdem ein Verankerungselement (12; 25') des Kastens (5; 5') im Strömungsdurchgang (3) der provisorischen Entwässerungsanlage (2) enthält, wobei das Verankerungselement (12; 25') sich vom Kasten (5; 5') entgegengesetzt zum Aufnahmevolumen (15; 15') erstreckt.
  8. Filtervorrichtung (1; 1') nach mindestens einem der vorhergehenden Ansprüche, die außerdem mindestens eine entfernbare Filterschicht enthält, die geeignet ist, den Boden (6; 6') und die stromaufwärtigen (7; 7') und stromabwärtigen Wände (8; 8') im Inneren des Aufnahmevolumens (15; 15') zu bedecken, und auf die das Filtermaterial (16) aufgelegt werden soll.
  9. Filtervorrichtung (1') nach mindestens einem der vorhergehenden Ansprüche, wobei mindestens die stromabwärtige Wand (8') außerdem einen massiven Teil (22') in der Nähe des Bodens (6') aufweist.
  10. Filtervorrichtung (1') nach mindestens einem der vorhergehenden Ansprüche, wobei der gebrochene Teil (23') der stromabwärtigen Wand (8') eine Abflussöffnung (24') aufweist, die geeignet ist, mit einer Abflussleitung verbunden zu werden.
  11. Filtervorrichtung (1') nach mindestens einem der vorhergehenden Ansprüche, wobei mindestens eine der stromaufwärtigen (7') und stromabwärtigen Wände (8') bezüglich des Bodens (6') entfernbar ist.
  12. Filtervorrichtung (1; 1') nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie modulare Kästen enthält.
  13. Provisorisches Entwässerungsverfahren einer Tiefbau-Baustelle, wobei das provisorische Entwässerungsverfahren die Schritte enthält, die darin bestehen:
    - eine provisorische Entwässerungsanlage herzustellen, die mindestens ein ausgehöhltes Element (2) aufweist, das vorzugsweise aus mindestens einem Becken und/oder mindestens einem Graben und/oder mindestens einem natürlichen Wasserlauf besteht; wobei das ausgehöhlte Element (2) mindestens einen Strömungsdurchgang (3) der Rieselwasser gemäß einer Strömungsrichtung (A) bildet und/oder enthält,
    - mindestens eine Filtervorrichtung (1; 1') nach einem der Ansprüche 1 bis 12 im Strömungsdurchgang (3) anzuordnen, wobei die stromaufwärtigen (7; 7') und stromabwärtigen Wände (8; 8') des Kastens (5; 5') sich quer bezüglich der Strömungsrichtung (A) der Rieselwasser erstrecken.
EP14715046.0A 2013-03-08 2014-03-10 Filterungsvorrichtung für eine temporäre sanitäre einrichtung auf einer baustelle sowie verfahren zur temporären installation Not-in-force EP2964838B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1352103A FR3002931B1 (fr) 2013-03-08 2013-03-08 Dispositif de filtration pour installation d'assainissement provisoire sur un chantier de genie civil, caisson et procede d'assainissement provisoire y relatifs
PCT/FR2014/050539 WO2014135818A2 (fr) 2013-03-08 2014-03-10 Dispositif de filtration pour installation d'assainissement provisoire sur un chantier de genie civil, caisson et procede d'assainissement provisoire y relatifs

Publications (2)

Publication Number Publication Date
EP2964838A2 EP2964838A2 (de) 2016-01-13
EP2964838B1 true EP2964838B1 (de) 2018-04-25

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EP14715046.0A Not-in-force EP2964838B1 (de) 2013-03-08 2014-03-10 Filterungsvorrichtung für eine temporäre sanitäre einrichtung auf einer baustelle sowie verfahren zur temporären installation

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EP (1) EP2964838B1 (de)
FR (1) FR3002931B1 (de)
WO (1) WO2014135818A2 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116791647B (zh) * 2023-08-23 2023-12-01 华侨大学 一种基坑降水装置及其使用方法

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Publication number Priority date Publication date Assignee Title
FR2696946A1 (fr) * 1992-10-20 1994-04-22 Inst Textile De France Dispositif de dépollution pour conduite d'eau.
US8256995B2 (en) * 2004-08-10 2012-09-04 Mcmahon James P Aboveground modular, permeable reactive barrier system for liquid runoff treatment
US20070284312A1 (en) * 2006-06-12 2007-12-13 Tri-E Technologies Disposal system for waste generated during plastering of swimming pool
US8287728B2 (en) * 2009-02-10 2012-10-16 Fountainhead L.L.C. Elevated swale for treatment of contaminated stormwater

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FR3002931A1 (fr) 2014-09-12
EP2964838A2 (de) 2016-01-13
WO2014135818A3 (fr) 2014-11-20
FR3002931B1 (fr) 2015-12-18
WO2014135818A2 (fr) 2014-09-12

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