EP1997971A2 - Station de pompage d'eaux usées - Google Patents

Station de pompage d'eaux usées Download PDF

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Publication number
EP1997971A2
EP1997971A2 EP08157037A EP08157037A EP1997971A2 EP 1997971 A2 EP1997971 A2 EP 1997971A2 EP 08157037 A EP08157037 A EP 08157037A EP 08157037 A EP08157037 A EP 08157037A EP 1997971 A2 EP1997971 A2 EP 1997971A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
wastewater
pumping station
station according
suction
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Withdrawn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
EP08157037A
Other languages
German (de)
English (en)
Other versions
EP1997971A3 (fr
Inventor
Jorma RÄSÄNEN
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.)
Grundfos Pumput Oy AB
Original Assignee
Grundfos Pumput Oy AB
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 Grundfos Pumput Oy AB filed Critical Grundfos Pumput Oy AB
Publication of EP1997971A2 publication Critical patent/EP1997971A2/fr
Publication of EP1997971A3 publication Critical patent/EP1997971A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/16—Pumping installations or systems with storage reservoirs

Definitions

  • This invention relates to a wastewater pumping station which includes a space for collecting wastewater and one or more pumps for pumping wastewater onward towards further treatment.
  • the pumping station can be made concrete-structured with a sufficiently large suction basin size. Then, a disadvantage is high building costs. Furthermore, if the area of the bottom of the suction basin is large, there occurs floating and bottom sludging, as a result of which there can be cloggings in pumps and/or pipelines. If a large volume of wastewater stays in the suction basin for a long time, odour nuisances (hydrogen sulphide) start to occur which are further increased by the large area of water.
  • Another known arrangement is to make the pumping station manufactured either of concrete or plastic extremely deep, whereby normally the starting and stopping levels are low and the reserve capacity is above them. Then, a disadvantage is the unnecessary lowering of the water level, whereby the lifting height required of the pumps is increased and the energy costs grow.
  • Advantageous plastic-structured pumping stations are not manufactured with larger diameters than 3 m due to practical reasons (e.g. transport problems and prices of manufacturing moulds). If in these pumping stations the pumps are additionally wanted low in a separate dry space, the effective water volume is equivalently decreased, whereby the pumping station has to be made very high and installed deep into the ground. Then also the useless volume below the pump space grows, which increases the manufacturing costs. Furthermore, great buoyancy is created for deep pumping stations manufactured of plastic, which requires as counterweight a large concrete slab.
  • the object of this invention is to eliminate these disadvantages of known prior art.
  • the wastewater pumping station according to the invention is characterised by that the space consists of two basins connected to each other, one of which is a pump basin and the other a combined suction and reserve capacity basin.
  • An advantageous embodiment of the wastewater pumping station according to the invention is characterised by that both basins are substantially cylindrical, and that the pump cylinder is substantially in the vertical position and the combined suction and reserve capacity cylinder is almost in the horizontal position.
  • Another advantageous embodiment of the wastewater pumping station according to the invention is characterised by that the cylinder in the almost horizontal position has been tilted in relation to the horizontal direction such that it slopes towards the cylinder in the vertical position, whereby a tilt angle is over 0°, advantageously over 1°.
  • a further advantageous embodiment of the invention is characterised by that the tilt angle is smaller than 8°.
  • Fig. 1 shows a cross section of a wastewater pumping station according to the invention.
  • Fig. 2 shows a section along line A-A of Fig. 1 .
  • Fig. 3 shows a tilt of a suction pipe of a pump as cut.
  • Fig. 4 shows a bevel of the end of the suction pipe of the pump as cut.
  • the pumping station shown in the drawings consists of two cylinders which can be e.g. of plastic or steel.
  • a cylinder 1 forms a pump space and a cylinder 2 forms a combined suction basin and reserve capacity basin.
  • the cylinder 1 is in the vertical position, whereas the cylinder 2 is almost in the horizontal position such that it forms in relation to the horizontal plane an angle a and falls towards the cylinder 1.
  • the angle a is advantageously between over 0°, advantageously over 1° but below 8°.
  • a central electric box 8 can be located e.g. above the cylinder 1, inside of it or farther from the pumping station. If required, e.g. at the end of the cylinder 2 is located an overflow pipe 9.
  • Sewage water arrives in the cylinder 2 typically from a pipe 11 located at its end part and flows along the lower part of the cylinder 2 to the suction chamber 3.
  • the pipe 11 can also arrive in the lower part of the cylinder 2 from the side.
  • a flow velocity v has to be just before the suction space about 0.2-0.3 m/s, advantageously 0.25 m/s. Then, a height h 1 of the starting level 12 from the lower surface of the cylinder 2 has to be selected in accordance with this velocity and it is dependent on the volume flow of the pump and the diameter of the basin 1.
  • the required reserve capacity is arranged in the suction chamber and, in accordance with this, the suction chamber is dimensioned such that too high a drop h 2 is not created on a stopping level 13. Otherwise, too much air will be mixed with the water which can cause problems in the operation of the pump.
  • the size of the suction chamber is dimensioned such that h 2 is about 50-150 mm.
  • the suction pipe can be set according to Fig. 3 at an angle ⁇ 0 of about 0.5°.
  • FIG. 4 Another alternative is shown in Fig. 4 in which the end of the suction pipe is bevelled upwards for an angle ⁇ which can be e.g. about 1-3°.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sewage (AREA)
EP08157037.6A 2007-05-28 2008-05-28 Station de pompage d'eaux usées Withdrawn EP1997971A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20075383A FI119566B (fi) 2007-05-28 2007-05-28 Jätevesipumppaamo

Publications (2)

Publication Number Publication Date
EP1997971A2 true EP1997971A2 (fr) 2008-12-03
EP1997971A3 EP1997971A3 (fr) 2013-05-01

Family

ID=38069550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08157037.6A Withdrawn EP1997971A3 (fr) 2007-05-28 2008-05-28 Station de pompage d'eaux usées

Country Status (2)

Country Link
EP (1) EP1997971A3 (fr)
FI (1) FI119566B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160158673A1 (en) * 2013-07-12 2016-06-09 Ksb Aktiengesellschaft Wastewater Lifting Station
US10669708B1 (en) * 2019-12-20 2020-06-02 Robert Sherwood Sump system
CN111424804A (zh) * 2020-04-13 2020-07-17 中韩杜科泵业(浙江)有限公司 一种智能多方位清除内部有毒气体的一体化预制泵站
US10968618B1 (en) * 2019-12-20 2021-04-06 Robert Sherwood Sump system
US10982423B1 (en) 2019-12-20 2021-04-20 Robert Sherwood Sump system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115199560B (zh) * 2022-09-19 2022-12-06 河北双达石油设备制造有限公司 一种可强自吸的泵用引流装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB438132A (en) * 1934-05-11 1935-11-11 James Alger Coombs Improvements in or relating to raising liquids by gas pressure
FI76166C (fi) * 1986-04-04 1990-09-15 Sarlin Ab Oy E Avloppspumpstation.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160158673A1 (en) * 2013-07-12 2016-06-09 Ksb Aktiengesellschaft Wastewater Lifting Station
US9873069B2 (en) * 2013-07-12 2018-01-23 Ksb Aktiengesellschaft Wastewater lifting station
US10669708B1 (en) * 2019-12-20 2020-06-02 Robert Sherwood Sump system
US10968618B1 (en) * 2019-12-20 2021-04-06 Robert Sherwood Sump system
US10982423B1 (en) 2019-12-20 2021-04-20 Robert Sherwood Sump system
CN111424804A (zh) * 2020-04-13 2020-07-17 中韩杜科泵业(浙江)有限公司 一种智能多方位清除内部有毒气体的一体化预制泵站

Also Published As

Publication number Publication date
FI20075383A0 (fi) 2007-05-28
FI119566B (fi) 2008-12-31
EP1997971A3 (fr) 2013-05-01
FI20075383A7 (fi) 2008-11-29

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