WO2008099182A1 - Drainage des eaux de surface - Google Patents

Drainage des eaux de surface Download PDF

Info

Publication number
WO2008099182A1
WO2008099182A1 PCT/GB2008/000515 GB2008000515W WO2008099182A1 WO 2008099182 A1 WO2008099182 A1 WO 2008099182A1 GB 2008000515 W GB2008000515 W GB 2008000515W WO 2008099182 A1 WO2008099182 A1 WO 2008099182A1
Authority
WO
WIPO (PCT)
Prior art keywords
receptacle
pit
drainage pit
funnel
drainage
Prior art date
Application number
PCT/GB2008/000515
Other languages
English (en)
Inventor
Faisal Abdulaziz Alasfour
Original Assignee
Barry, Patrick, James
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
Priority claimed from GB0705423A external-priority patent/GB0705423D0/en
Priority claimed from GB0705464A external-priority patent/GB0705464D0/en
Priority claimed from GB0722842A external-priority patent/GB0722842D0/en
Application filed by Barry, Patrick, James filed Critical Barry, Patrick, James
Publication of WO2008099182A1 publication Critical patent/WO2008099182A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401—Gullies for use in roads or pavements
    • E03F5/0404—Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure

Definitions

  • the present invention relates to surface water drainage pits .
  • Surface water drainage pits are commonly found at the side of roadways, but may be found in other locations, for example, in car parks, airport runways and so on. They are- provided to drain the surface of water, most commonly rainwater.
  • the pit can also be called a gully (e.g. in the UK), or a storm drain (in the US) . They are usually covered by a metal grating (to support traffic) and have one or more openings connecting the pit to a surface water drain. (A typical configuration is that the drain passes into the pit at one opening and then out and onwards via another.) Surface water enters the pit via the grating and then flows from there into the surface water drain; from there it flows on via the sewerage system to an outflow into a pond or river for example. (If the sewerage is combined with foul water the destination will more likely be a treatment works . )
  • a problem, illustrated in Figure 1, with such drainage pits is that they can become blocked with silt or sand or other matter that flows into the pit along with the surface water.
  • the pits and neighbouring sections of drain therefore have to be cleaned out at regular intervals.
  • US2007/0199869A1 discloses an improved drainage pit (or "basin") .
  • Figure 2 shows a cross section thereof.
  • the pit has a removable receptacle that receives the surface water, but at least some of the detritus that it brings with it collects in the bottom of the receptacle.
  • the receptacle contains an inner housing having walls forming a central pipe down which the surface water flows from the grating to the bottom of the receptacle. The walls of the central pipe are spaced from those of the receptacle to form a channel.
  • the lower end of the central pipe is above the bottom of the receptacle and a flange between the inner housing and the receptacle at the lower end of the central pipe is provided with holes communicating with the channel .
  • the surface water flows from the bottom of the receptacle up through the channel and then passes out of the receptacle through horizontal slits in the walls of the receptacle.
  • the walls of the receptacle are spaced from those of the pit providing a further channel down which the surface water passes to the bottom of the pit, from where it flows into the drain.
  • the bottom of the receptacle is spaced from bottom of the pit to provide a large passage for the surface water to reach the drain.
  • the construction is said to be of particular usefulness in sandy areas.
  • the ' sand collects in the bottom of the receptacle filling up past the holes in the flange. The surface water passing through the sand is thereby filtered. With prolonged use the receptacle fills further with sand and can then be emptied by simply lifting the receptacle out of the pit.
  • drainage pits solid matter collection receptacles, funnels and gratings as defined in the appended claims.
  • FIGURE illustrates a problem with conventional drainage pits
  • FIGURE is a cross section of the drainage pit disclosed by US2007/0199869A1
  • FIGURE is a cross section of a first example of the invention
  • FIGURE is a plan view of the first example of the invention
  • FIGURE shows the first example filled with solid matter to a certain point
  • FIGURE illustrates further examples of the invention
  • FIGURE is an example of the invention particularly suited to small gullies;
  • FIGURE 8A shows a conventional grating
  • FIGURE 8B shows a grating in accordance with the invention.
  • FIG. 3 shows a first example of the invention in cross section.
  • a drainage pit 10 in the ground 11 (typically 90cm across) is provided with a grating 12 at the level of the surface 13 of the ground.
  • a receptacle 14 is provided in the pit to catch surface water entering the pit via the grating. Water overflowing from the receptacle flows over a lip 15 of the receptacle and passes down a channel 16 between the wall 18 of the receptacle and the wall 19 of the pit. From there it enters the surface water drain 17 where that opens into it. Solid matter 8 in the water settles in the receptacle and stops it from entering the drain 17, which therefore remains unobstructed.
  • the pit can be easily cleaned by opening the grating 12 and lifting out the receptacle, which can then be emptied by tipping out the contents (for example into a large receptacle mounted on a vehicle so that the solid matter can be removed from the site) .
  • the receptacle 14 is rectangular in shape and is located generally in the centre of the pit 10 spaced from the walls 19 thereof by spacers 7 attached to the wall 18 of the receptacle near the lip in the centre of each side of the receptacle.
  • the spacers not being wide, do not particularly restrict the channel 16.
  • Each wall of the receptacle 18 has a section 6 reducing the width of the receptacle to broaden the width of the channel 16 to about 20cm to allow for free flow of the water; the channel width at the lip 15 is about 10cm, which is still sufficient but the receptacle is wider here to allow as much room as possible for a funnel 24.
  • the floor 20 of the receptacle is provided- with spacers 21 to raise it above the floor 22 of the pit providing another channel 23 below the receptacle allowing surface water to reach the drain 17. (Alternatively the spacers are provided on the floor of the pit or as a separate item.)
  • a funnel 24 is mounted below the grating 12 to guide the surface water to the receptacle 14.
  • the mouth 25 of the funnel is positioned to collect water from all the openings 26 of the grating.
  • the grating 12 and mouth of the funnel are preferably wider than the receptacle in order to maximise the total area of the openings 26 between the bars 27 of the grating so that the grating does not restrict the flow of the surface water. This design also allows the receptacle and funnel to be retrofitted to existing gullies.
  • the funnel is mounted by having an outer horizontal flange 28 at its mouth that rests on the top of the wall 19 of the pit and which is sandwiched between that and the grating. For cleaning the funnel is lifted out first before the receptacle is lifted out of the pit.
  • An alternative is to mount the funnel (in the same position above the receptacle) to the receptacle using one or more brackets . The funnel and receptacle are then lifted together out of the pit for emptying and cleaning.
  • the stem 29 of the funnel opens at a position where the surface water will flow into the receptacle.
  • the opening 30 of the stem is at a level distance D below the lip 15 of the receptacle since that discourages, when the receptacle is full, immediate flow of the water across the surface of the water in the receptacle and over the lip before the solid matter has had a chance to settle out.
  • There is however a compromise to be made in the length of the stem the flow of surface water will become blocked when the solid matter in the bottom of the receptacle reaches the level of the opening 30 of the stem.
  • Figure 5 shows the receptacle filled with solid matter to beyond the point where the channel 31 is blocked and the maximum flow rate through the gully is severely reduced. Therefore the longer the stem the more frequently the receptacle will need to be emptied.
  • FIG. 6 is a cross section of a second example of the invention. This is generally similar to that of Figures 3 to 5, except as described below. Also to simplify the illustration the pit and grating are not shown.
  • the walls of the receptacle and the funnel do not allow water to pass through them.
  • the walls 18 of the receptacle 14 are provided with holes 40, 41 to allow the water in the receptacle to drain.
  • the size of the holes may be chosen in relation to the size of the particles in the surface water likely to be found in a particular location, so that they are retained in the receptacle. (Smaller particles that escape are more likely to be carried along by the water through the drain without blocking it.)
  • a dozen or so 3mm holes 40 are provided in the lower half of each wall with six being just a few cm above the floor 20 of the receptacle. These allow the receptacle to drain in several hours, the time depending on the solid contents of the receptacle.
  • a large mesh of 3mm perforations 41 are provided in the portion of the walls of the receptacle above the holes 40. Under low surface water flow conditions the holes 40 are sufficient to drain the receptacle. At higher flow rates the level of the water in the receptacle rises reaching the mesh of holes 41, which allow a much higher flow to pass through them. In this state the separation out the solid matter will be less effective, but it is a priority to ensure that the pit drains the surface of the ground.
  • the level of the water may reach the top of the receptacle and then the water flows over the lip 15 of the receptacle as with the example of Figures 3 to 5.
  • Holes 42 are also provided in the stem 29 section of the funnel; in the example as shown these are in the form of a mesh of 3mm perforations.
  • the stem 29 preferably has these on all sides. (In the cross section that is Figure 6 the far wall of the stem 29 of the funnel has been omitted to simply the view.)
  • the holes 42 do not reduce the effectiveness of the funnel's function of guiding the surface water into the middle of the receptacle.
  • the holes 42 in the stem nonetheless allow the flow of surface water to reach the drain 17, the water flowing through the holes 42 in the stem and then over the lip 15 of the receptacle.
  • An example in which holes are provided in the funnel but not in the receptacle is also possible. In this example the water flows as described for the example of Figures 3 to 5 until the solid matter reaches the opening 30 of the funnel and then it flows as described for the first example described above in relation to Figure 6.
  • ⁇ door 25 is provided in the floor 20 of the receptacle.
  • the receptacle is provided with an inner basket 50.
  • the basket is sized to give a clearance of a few centimetres between the walls of the basket and the walls 18 of the receptacle.
  • the walls of the basket are constructed from 3 cm mesh 51. This is particularly suitable for retaining items such as leaves and plastic bags that would otherwise block the holes 40 and 41 of the receptacle.
  • a lower portion 52 of the walls of the basket is preferably a mesh of 3 mm perforations. These stop smaller particles from blocking the holes 40, but if they themselves become blocked flow is still achieved through the larger mesh 51.
  • the basket 50 Whilst the basket 50 can be lifted out and cleaned by tipping up, it too is preferably provided with a door 53 in its floor, which can be opened in order to release the solid matter that it contains.
  • the basket 50 may be mounted inside the receptacle 14 in various ways. Whilst the basket could be permanently fixed, it is preferably removable, and a fitting to achieve that is shown in Figure 6.
  • the top rim of the basket is provided with a funnel section 54 having a horizontal flange 55. The horizontal flange 55 rests on the flange 28 of the main funnel 24 and is sandwiched between that and the grating 12.
  • the inner basket 50 is particularly useful where the receptacle 14 has drainage holes, but could still, if • desired, be used if the receptacle does not have drainage holes ;
  • the receptacle can be provided with a hanger 60.
  • This comprises two vertical rods 61 fixed to the middle of two opposite sides of the receptacle 14, and spaced a few cm therefrom, by a vertical box section member (not shown) .
  • Each rod 61 has an eye at its top end at a level just above the lip 15, for connection, when it is desired to lift the receptacle, to lifting hooks 63.
  • the rods are also each provided with hooks 64 attached to them at a suitable height just below the opening 30 of the stem of the funnel. These hooks 64 extend horizontally across the funnel stem wall and engage therewith when the rods are lifted, lifting the funnel out of the pit.
  • the funnel 24 has sloping sections extending beyond the receptacle on all sides . In smaller gullies, this may not leave much room to give the receptacle much volume .
  • An example particularly suited to smaller gullies is shown in Figure 7.
  • the funnel 24 only has a sloping section 70 on one side of the receptacle 14.
  • the funnel still preferably has the flange 28 on all sides, which ensures that the funnel collects water from all the openings 26 of the grating 12.
  • the receptacle 14 is not positioned in the centre of the pit but its wall on the opposite side from the sloping section 70 of the funnel is placed against the wall of the pit. Underneath the sloping section 70 of the funnel the wall of the receptacle is provided with a long sloping section 71 in order to increase the volume of the receptacle.
  • the funnel and receptacle are provided as a single integral item with at least one wall of the receptacle (the left-hand wall 72 in Figure 7) merging into the wall of the stem section of the funnel .
  • This example can also be provided with drainage holes in the receptacle and/or mesh and may optionally also have an inner basket, as in the examples of Figure 6.
  • FIGs 8A and 8B illustrate a further aspect of the invention.
  • a conventional grating 12 is shown in cross- section in Figure 8A.
  • the bars 27 of the grating 12 have vertical walls, and sand or other solid material 80 often blocks the opening 26 between them, requiring them to be cleaned by poking the material down into the pit with a rod.
  • FIG. 8B An improved grating in accordance with the invention is shown in cross-section in Figure 8B.
  • the bars 27 have sloping sides so that the width of the openings 26 is greater at the bottom than at the top. With this shape, solid material 80 cannot become wedged in the openings, which therefore remain clear.
  • one wall of each hole may be vertical and the other sloping, or even both walls of an opening can be sloping in the same direction (e.g., both from left to right), as long as the opening is wider at the bottom than at the top .

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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)

Abstract

L'invention concerne une fosse de drainage destinée à être utilisée au bord d'une chaussée, par exemple, comme réceptacle servant à collecter les matières solides contenues dans l'eau de pluie rentrant dans la fosse, tout en permettant à l'eau de pluie de ressortir de la fosse. Un entonnoir collecte les eaux de surface entrant dans la fosse et les guide dans le réceptacle. Le réceptacle est pourvu de trous de drainage et comprend une passoire destinée à collecter les matières, des feuilles par exemple, empêchant ainsi le bouchage des trous de drainage du réceptacle. Le réceptacle peut être retiré de la fosse pour vider les matières solides qu'il contient et une porte formée dans la partie inférieure du réceptacle est prévue à cet effet. La grille recouvrant la fosse comporte des ouvertures à parois inclinées, l'extrémité inférieure de l'ouverture étant plus large que l'extrémité supérieure, de sorte que les matières ne s'accumulent pas dans les ouvertures de la grille en les bouchant.
PCT/GB2008/000515 2007-03-21 2008-02-14 Drainage des eaux de surface WO2008099182A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB0705423A GB0705423D0 (en) 2007-03-21 2007-03-21 Safety box for rainwater manhole drainage
GB0705423.2 2007-03-21
GB0705464A GB0705464D0 (en) 2007-03-22 2007-03-22 Safety box for rainwater,manhole drainage
GB0705464.6 2007-03-22
GB0722842.2 2007-11-21
GB0722842A GB0722842D0 (en) 2007-11-21 2007-11-21 Surface water drainage

Publications (1)

Publication Number Publication Date
WO2008099182A1 true WO2008099182A1 (fr) 2008-08-21

Family

ID=39473213

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/000515 WO2008099182A1 (fr) 2007-03-21 2008-02-14 Drainage des eaux de surface

Country Status (1)

Country Link
WO (1) WO2008099182A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359173A (zh) * 2011-09-26 2012-02-22 四川大学 桥底排水设计
CN102444199A (zh) * 2011-10-10 2012-05-09 四川大学 防堵雨水盖
CN102864835A (zh) * 2012-10-24 2013-01-09 上海天予实业有限公司 带有拦截器的预制井
WO2012160359A3 (fr) * 2011-05-20 2013-02-28 Hydro International Plc Dispositif de traitement
CN105369877A (zh) * 2015-11-09 2016-03-02 无锡市三六九钢管有限公司 具备吊取垃圾清理功能的下水道水管
US9512608B2 (en) * 2015-03-30 2016-12-06 Faisal Abdul Aziz Al-Assfour Ground water collection system
CN107587593A (zh) * 2017-09-30 2018-01-16 武汉圣禹排水系统有限公司 具有水力翻斗冲洗装置的在线雨水处理设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1070773A (en) * 1912-08-03 1913-08-19 Patrick Callahan Sand-trap.
US1686415A (en) * 1926-09-20 1928-10-02 Lyes James Trap for drains and sewers
US1774793A (en) * 1929-10-16 1930-09-02 George F Egan Sewer construction
US2615526A (en) * 1950-12-21 1952-10-28 Lane Frank Sewer catch basin unit
WO1983001268A1 (fr) * 1981-10-01 1983-04-14 Oscar Sven Arntyr Dispositif de filtration et de recuperation pour des drains d'ecoulement d'eau
US5037541A (en) * 1990-05-30 1991-08-06 Ruey Jang Shiau Sanitary device for sewerage channel
US6200484B1 (en) * 2000-03-16 2001-03-13 Mcinnis Stephen J. Surface water filtration apparatus
US7112274B1 (en) * 2003-09-30 2006-09-26 Sanguinetti Peter S Post-production drain inlet filter system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1070773A (en) * 1912-08-03 1913-08-19 Patrick Callahan Sand-trap.
US1686415A (en) * 1926-09-20 1928-10-02 Lyes James Trap for drains and sewers
US1774793A (en) * 1929-10-16 1930-09-02 George F Egan Sewer construction
US2615526A (en) * 1950-12-21 1952-10-28 Lane Frank Sewer catch basin unit
WO1983001268A1 (fr) * 1981-10-01 1983-04-14 Oscar Sven Arntyr Dispositif de filtration et de recuperation pour des drains d'ecoulement d'eau
US5037541A (en) * 1990-05-30 1991-08-06 Ruey Jang Shiau Sanitary device for sewerage channel
US6200484B1 (en) * 2000-03-16 2001-03-13 Mcinnis Stephen J. Surface water filtration apparatus
US7112274B1 (en) * 2003-09-30 2006-09-26 Sanguinetti Peter S Post-production drain inlet filter system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012160359A3 (fr) * 2011-05-20 2013-02-28 Hydro International Plc Dispositif de traitement
GB2504902A (en) * 2011-05-20 2014-02-12 Hydro Int Plc Treatment device
US9688544B2 (en) 2011-05-20 2017-06-27 Hydro International Plc Treatment device
GB2504902B (en) * 2011-05-20 2019-04-10 Hydro Int Plc Liquid flow treatment device comprising a hydrodynamic separator
CN102359173A (zh) * 2011-09-26 2012-02-22 四川大学 桥底排水设计
CN102444199A (zh) * 2011-10-10 2012-05-09 四川大学 防堵雨水盖
CN102444199B (zh) * 2011-10-10 2013-07-24 四川大学 防堵雨水盖
CN102864835A (zh) * 2012-10-24 2013-01-09 上海天予实业有限公司 带有拦截器的预制井
US9512608B2 (en) * 2015-03-30 2016-12-06 Faisal Abdul Aziz Al-Assfour Ground water collection system
CN105369877A (zh) * 2015-11-09 2016-03-02 无锡市三六九钢管有限公司 具备吊取垃圾清理功能的下水道水管
CN107587593A (zh) * 2017-09-30 2018-01-16 武汉圣禹排水系统有限公司 具有水力翻斗冲洗装置的在线雨水处理设备

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