WO2003031016A1 - Reservoir de traitement d'eau comportant un dispositif de retenue pour un collecteur situe a l'interieur de ce reservoir - Google Patents

Reservoir de traitement d'eau comportant un dispositif de retenue pour un collecteur situe a l'interieur de ce reservoir Download PDF

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Publication number
WO2003031016A1
WO2003031016A1 PCT/SE2001/002131 SE0102131W WO03031016A1 WO 2003031016 A1 WO2003031016 A1 WO 2003031016A1 SE 0102131 W SE0102131 W SE 0102131W WO 03031016 A1 WO03031016 A1 WO 03031016A1
Authority
WO
WIPO (PCT)
Prior art keywords
manifold
disc
water treatment
tank
treatment tank
Prior art date
Application number
PCT/SE2001/002131
Other languages
English (en)
Inventor
Magnus Petersson
Original Assignee
Europe Clearwater Vattenrening 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 Europe Clearwater Vattenrening Ab filed Critical Europe Clearwater Vattenrening Ab
Priority to PCT/SE2001/002131 priority Critical patent/WO2003031016A1/fr
Publication of WO2003031016A1 publication Critical patent/WO2003031016A1/fr
Priority to SE0400866A priority patent/SE526505C2/sv

Links

Classifications

    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/001—Making filter elements not provided for elsewhere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/007—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection
    • B01D24/008—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/14—Downward filtration, the container having distribution or collection headers or pervious conduits
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C02F1/64—Heavy metal compounds of iron or manganese
    • C02F1/645—Devices for iron precipitation and treatment by air
    • 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

Definitions

  • the present invention relates to a water treatment tank having bottom, side and top walls defining a space inside the tank, said space containing a bottom layer of gravel and a top layer of a filter material, which is to be consumed by substances in water being treated inside the tank and thus has to be replenished in course of time, a top opening being provided in said top wall for accessing the tank when replenishing said filter material and for inserting a manifold into the tank, said manifold comprising a tubular part having an upper end slidingly connected to a cover, which is tightly mounted in said top opening and has a water duct communicating with the manifold, and having a lower end including a strainer embedded in said bottom layer.
  • the object of the invention is to improve a water treatment tank of the type mentioned by way of introduction in such a manner that a standard tank with a normal top opening is usable and that for service measures no means have to be disassembled inside the tank.
  • a disc which has a central through hole, with its through hole is slid onto the manifold to rest horisontally on top of a protruding means at said strainer, so that gra- vel and filter material on top of an upper face of said disc counteract removal of the manifold when dismounting the cover .
  • the manifold By using a simple disc, on top of which the load of gravel and filter material rests, the manifold is safely kept in place even when a considerable pull out force acts on it when removing the cover of the tank, the tank being of any standard type. Further, by placing the disc at the strainer in the bottom part of the tank, there is nothing but the manifold itself that obstructs the tank opening, i.e. there is enough room for necessary service measures without disassembling any additional parts of the tank.
  • said disc and the central through hole in it are oblong, the hole having long sides that parallel long sides of the disc.
  • the disc becomes tiltable about a horisontal transverse axis through the center of the disc and thus withdrawable through a tank opening with a diameter smaller than the length of the dies.
  • the oblong hole has a width corresponding to a given exterior diameter of the manifold and if a sleeve is provided on top of the protruding means, said sleeve surrounding the manifold and having a radius corresponding to a radius of an arc-shaped cut-out in a centre part of either long side of the oblong hole.
  • An attachment means preferably an orifice in said oblong disc, is provided on said disc between the oblong through hole and either short side of the disc.
  • a tool such as a L-shaped hook
  • the attachment means in order to pull the disc out of the tank when required.
  • the top opening in the top wall of conventional tanks will be circular with a fixed radius.
  • the oblong disc has rounded short sides having radii of curvature smaller than said fixed radius, so that the disc becomes easily withdrawable without interfering with the rim of the opening.
  • the protruding means at said strainer is a top wall of the strainer, however, alternatively the protruding means at said strainer may also be a rim surrounding the manifold. Finally an 0-ring surrounding the manifold may be placed on top of said disc for holding the disc down onto said protruding means, thus preventing that the disc is moved when gravel is poured over it when filling an empty tank with filtering media.
  • FIG. 1 is a partly sectional view schematically illustrating a water treatment tank according to the invention
  • Fig. 2 is a partly sectional view schematically illustrating removal a tank top cover for replenishing filter material
  • Fig. 3 is a partly sectional view schematically illustrating removal of an O-ring from a manifold in order to free an oblong dies placed on top of a bottom strainer;
  • Fig. 4 is a partly sectional view schematically illustrating removal of said disc with the aid of a hook
  • Fig. 5 is a partly sectional view schematically illustrating the oblong disc taken off the manifold, the manifold now being extractable out of the tank.
  • the water treatment tank 1 illustrated in the drawings is intended for treating water. It has a circular cylindrical tank body consisting of bottom, side and top walls 2, 3 and 4 defining a space 5 inside the tank 1. In its centre the top wall 4 has a top opening 6, having an internal thread 7 to mate with an external thread 8 on a neck portion of a cover 9.
  • the cover 9 closes the top opening 6 hermetically but comprises a first and a second pipe joint 10 and 11 for pipes 12 and 13 respectively for leading water to and from the tank 1, the water being indicated by the directional arrows a and b.
  • the cover 9 also comprises internal ducts (not shown) leading water from the incomming pipe 12 into the tank space 5 (arrows c and d) and, in a way described further down, out of said space 5 again into the outgoing pipe 13.
  • a manifold 14, comprising a long tubular part 15 and a bottom strainer 16 connected to the tubular part 15 by a sleeve 17, is inserted from below in the center of the cover 9 into the one of said internal ducts which is connected to the outgoing pipe 13.
  • the manifold 14 is tightly connectable with the cover 9 by an O-ring 18 that surrounds the top of said tubular part 15 so that water leaving the tank 1 through the manifold 14 as illustrated by the directional arrows m, n, o flows out through the outgoing pipe 13.
  • the bottom strainer 16 is circular cylindrical and has a plane top wall 19, from the center of which said sleeve 17 rises.
  • the strainer 16 serves as a water inlet for water flowing into the manifold 16 (arrows k and 1) after passing through the tank space 5.
  • the disc 20 On top of the plane top wall 19 of the strainer 16 an oblong disc 20 rests horisontally. As can be seen in Fig. 5 the disc 20 has parallel long sides 21, 22 and rounded short sides 23, 24 with radii of curvature slightly smaller than the top opening 6 of the tank 1.
  • the disc 20 has an oblong through hole 25 being placed in the centre of it and extending in parallel with it.
  • the oblong hole 25 has in its centre a somewhat widened part 26 that fits the sleeve 17 on the strainer 16, the rest of the hole having a size and shape fitting the diameter of the tubular part 15 of the manifold 14.
  • the disc also has an orifice 27 between its short side 22 and the oblong hole 25.
  • the disc 20 is kept in place by an O-ring 28 which is mounted on said sleeve 17 holding the disc down onto the top wall 18 of the strainer 16.
  • the tank space 5 there are a bottom layer 29 of gravel, on top of the bottom layer 29 a mid layer 30 of Birm and on top of the mid layer 30 a top layer 31 of limestone, through which layers water to be treated in- side the tank 1 passes according to the directional arrows e, f , g, h, i, j_, k, and 1.
  • the limestone layer 30 serves to neutralise the pH-value of the water
  • the Birm layer 29 serves to take care of e.g. iron in the water
  • the gravel layer 28 serves to keep the strainer 16 open to the flow of water.
  • the disc 20 is hooked on an L-shaped tool 32, which is inserted in the orifice 27 of the disc 20, and lifted through the tank opening 6 sliding along the tubular part 15 of the manifold 14 in an inclined way, which is posible thanks to the oblong through hole 25 in the disc 20.
  • the manifold 14 itself is lifted out of the tank 1, which now can be cleaned and refilled in a reverse operation to the one described above.
  • the embodiment described is only one of many modes in which the claimed invention can be implemented.
  • the disc 20 can be formed in another way, taking the shape and size of the tank opening 6 into consideration.
  • the disc 20 does not necessarily have to rest on the the strainer 16 if only some other supporting means is provided at the bottom part of the manifold 14.

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)
  • Filtration Of Liquid (AREA)

Abstract

Réservoir de traitement d'eau (1) définissant un espace (5) contenant une couche inférieure (29) de gravier et une couche supérieure (31) de matériau filtrant dont on doit faire l'appoint périodiquement. Une ouverture supérieure (6) permet d'accéder au réservoir (1) quand on fait l'appoint dudit matériau filtrant et d'introduire un collecteur (14) dans ce réservoir (1). Ce collecteur (14) est composé d'une pièce tubulaire (15) dont l'extrémité supérieure est accouplée coulissante au couvercle (9) du réservoir. Il possède également une extrémité inférieure comprenant un filtre (16) noyé dans ladite couche inférieure (29). Un disque (20) possédant un perçage central (25) pour le collecteur (14) est glissé sur ce dernier, de manière à s'appuyer horizontalement au sommet d'une saillie (19) au niveau dudit filtre (16), de sorte que le gravier et le matériau filtrant au sommet d'une face supérieure dudit disque (20) s'opposent au retrait du collecteur (14) quand on démonte le couvercle (9).
PCT/SE2001/002131 2001-10-05 2001-10-05 Reservoir de traitement d'eau comportant un dispositif de retenue pour un collecteur situe a l'interieur de ce reservoir WO2003031016A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/SE2001/002131 WO2003031016A1 (fr) 2001-10-05 2001-10-05 Reservoir de traitement d'eau comportant un dispositif de retenue pour un collecteur situe a l'interieur de ce reservoir
SE0400866A SE526505C2 (sv) 2001-10-05 2004-04-01 Vattenbehandlingstank med en kvarhållningsanordning för ett dysrör inuti tanken

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2001/002131 WO2003031016A1 (fr) 2001-10-05 2001-10-05 Reservoir de traitement d'eau comportant un dispositif de retenue pour un collecteur situe a l'interieur de ce reservoir

Publications (1)

Publication Number Publication Date
WO2003031016A1 true WO2003031016A1 (fr) 2003-04-17

Family

ID=20284496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002131 WO2003031016A1 (fr) 2001-10-05 2001-10-05 Reservoir de traitement d'eau comportant un dispositif de retenue pour un collecteur situe a l'interieur de ce reservoir

Country Status (1)

Country Link
WO (1) WO2003031016A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3838375A1 (fr) * 2014-12-16 2021-06-23 Saint-Gobain Performance Plastics Corporation Appareil à capsule filtrante

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381823A (en) * 1965-10-13 1968-05-07 Jacuzzi Bros Inc High flow sand gravel type filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381823A (en) * 1965-10-13 1968-05-07 Jacuzzi Bros Inc High flow sand gravel type filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3838375A1 (fr) * 2014-12-16 2021-06-23 Saint-Gobain Performance Plastics Corporation Appareil à capsule filtrante

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