WO2016193511A1 - Filtre à matrice granulaire - Google Patents

Filtre à matrice granulaire Download PDF

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Publication number
WO2016193511A1
WO2016193511A1 PCT/ES2016/070369 ES2016070369W WO2016193511A1 WO 2016193511 A1 WO2016193511 A1 WO 2016193511A1 ES 2016070369 W ES2016070369 W ES 2016070369W WO 2016193511 A1 WO2016193511 A1 WO 2016193511A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
drain
fluid
filter means
granulometry
Prior art date
Application number
PCT/ES2016/070369
Other languages
English (en)
Spanish (es)
Inventor
Josep Bové Masmiquel
Gerard Arbat Pujolràs
Jaume Puig I Bargués
Toni Pujol Sagaró
Miquel Duran Ros
Francisco Ramírez De Cartagena Bisbe
Joan Pujol Planella
Original Assignee
Universitat De Girona
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 Universitat De Girona filed Critical Universitat De Girona
Publication of WO2016193511A1 publication Critical patent/WO2016193511A1/fr

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Classifications

    • 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

Definitions

  • the invention relates to a granular matrix filter for filtering a fluid comprising an inner chamber with a fluid inlet to be filtered and a permeate outlet, a first drain covering the permeate outlet, and a first filter media , granular, arranged in said chamber to be traversed by said fluid when circulating between said inlet and outlet.
  • Filtration is an indispensable operation in various applications in which it is of interest to eliminate suspended solids, such as water treatments for purification or purification or to prevent the clogging of emitters in drip irrigation facilities. .
  • the filters with the best performance in removing solids in suspension are those of granular matrix.
  • a known filter 100 very common in the state of the art and represented in Figures 1 to 3 which is formed by an inner chamber 102 with an upper fluid inlet 104 that must be filtered and a lower permeate outlet 106, separated from each other. by a granular filter means 12 disposed in the chamber 102 which is flowed through the fluid as it circulates between the inlet and the outlet.
  • the permeate outlet is carried out in a drain, called crepine 108.
  • the crepe 108 consists of a conical plastic dome with various longitudinal slots 1 10 opening smaller than the particle size of the filter medium 1 12 that allow the permeate to pass through.
  • the conical dome is mounted on a collector that channels the water that enters the crepe towards a circular opening that configures the permeate outlet.
  • the set is closed by a lid on the bottom.
  • the invention aims to propose a granular matrix filter of the type indicated at the beginning, which without reducing its performance in terms of solids removal, has a lower pressure drop and, consequently, reduces the necessary pressure and electrical consumption of The filtering installation.
  • a granular matrix filter of the type indicated at the beginning characterized in that it also comprises a second, granular filter means, arranged in the chamber between the first filter medium and the first drain to be traversed by the fluid when circulating between the inlet and outlet, the second filter means having greater permeability than the first filter media, and a second drain, arranged to physically separate the first and second filter media, the second drain presenting a plurality of fluid passage holes of smaller dimensions to the granulometry of the first medium filter and because the first drain has a plurality of fluid passage holes of dimensions smaller than the granulometry of the second filter medium.
  • the first drain may have larger holes than the state of the art crepins.
  • the second drain because it is not the last stage may have a larger passage surface.
  • the second drain ensures that the first filter media will not descend and mix with the second filter media.
  • the invention encompasses a series of preferred features that are the subject of the dependent claims and whose usefulness will be highlighted later in the detailed description of an embodiment of the invention.
  • the first drain extends along the entire cross-section of the chamber and comprises a plurality of first windows of larger dimensions than the granulometry of the second filter medium, and which are covered with a first mesh having a plurality of fluid passage orifices of dimensions smaller than the granulometry of said second filter medium. Thanks to this, a robust drainage is obtained, but instead allows a significant increase in the cross section through which the fluid can be drained. This reduces the speed of passage through the drain, reducing the pressure drop, without worsening the filtration.
  • the second drain extends along the entire cross section of the chamber and comprises a plurality of second windows of larger dimensions than the granulometry of the first filter medium, and which are covered with a second mesh having the plurality of fluid passage holes of dimensions smaller than the granulometry of the first medium filter.
  • said first drain and said second drain form an insertable drain device and adjusted to the contour of the walls of said chamber.
  • said first and second meshes are stainless steel meshes.
  • Fig. 1 a front view, cut longitudinally along the plane l-l of Figure 2, of a granular matrix filter of the prior art.
  • Fig. 2 a top plan view of the state of the art filter of Figure 1.
  • Fig. 3 a detail of the area A corresponding to the drainage of the state of the art filter of figure 1.
  • Fig. 4 a front view, longitudinally cut along the plane IV-IV of Figure 5, of a first embodiment of a granular matrix filter according to the invention.
  • Fig. 5 a top plan view of the filter of Figure 4.
  • Fig. 6 a detail of the zone B of figure 4.
  • Fig. 7, a front view, longitudinally cut along the plane VII-VII of Figure 8, of a second embodiment of a granular matrix filter according to the invention.
  • Fig. 8 a top plan view of the filter of Figure 7.
  • Fig. 9 a detail of the area C of Figure 7.
  • Fig. 10A a top perspective view of the filter drain of Figure 7.
  • Fig. 10B a bottom perspective view of the filter drain of Figure 7.
  • a first embodiment of the filter according to the invention is shown in Figures 4 to 6.
  • the granular matrix filter 1 comprises a tubular housing 24 of 200 mm diameter and 750 mm high that delimits an inner chamber 2.
  • the housing 24 in this case has a cylindrical and vertical shape, but this should not be construed as limiting, since the cross section of the housing could vary in other shapes such as quadrangular, polygonal or others.
  • the housing 24 incorporates a cylindrical conduit that forms a fluid inlet 4 that must be filtered, while a central opening is provided from the bottom of the chamber 2 that forms an outlet 6 of filtered or permeated fluid of 60 mm in diameter. Below the outlet 6 a manifold 26 is provided that empties into another tubular conduit. Although these are especially preferred arrangements for the inlet, the fluid outlet and the manifold 26, it is not ruled out that the position may be different and especially the inlet 4 and the conduit leaving the manifold 26.
  • the permeate outlet 6 is covered by a first drain 8 consisting of a parallelepipedic body having a plurality of first windows 16 that are coated with a stainless steel mesh 20 with a light inferior to the granulometry of the filter medium.
  • this configuration could also replace a plurality of slots or holes. with lights lower than those of the filter medium.
  • the windows are provided both on the upper horizontal face, and on the four lateral faces. The arrangement of windows on the side face makes it difficult for the first drain 8 to be easily clenched.
  • the filter 1 of this embodiment had several outlets 6, each of them being covered with a first drain 8.
  • a second drain 10 is provided.
  • a first granular first filter means 12 is arranged, arranged in the chamber 2 to be passed through the fluid when circulating from the inlet 4 in the direction of the outlet 6. Then, between the first and second drains 8, 10 the filter 1 comprises a second, granular second filter means 14.
  • the second drain 10 is intended to physically separate the first and second filter means 12, 14.
  • the second filter means 14 has a greater permeability than said first filter means 12, that is to say it has a more vast particle size and therefore opposes less resistance to the passage of the fluid.
  • first and second filter means 12, 14 have been represented only schematically by means of points of differentiated measurements and indicative of their differentiated particle sizes, but obviously chamber 2 contains an infinity of granules.
  • the pressure drop can be significantly improved of filter 1 and in particular in the area of the crepe.
  • the pressure drop can be measured by means of pressure gauges installed in the three ducts that protrude from the side wall of the housing 24. The person skilled in the art will understand that these three measurement ducts are not an essential part, nor necessary in the invention.
  • the first filter medium 12 in this embodiment is siliceous sand with a particle size of 0.63 to 0.75 mm, since it has a good retention capacity of suspended solids.
  • the second filter medium 14 used is ecofiltrant glass with a particle size of 0.85 to 1.50 mm.
  • Table 1 shows the physical characterization of the first and second means 12, 14.
  • the first and second drains 8, 10 are adapted to the corresponding granulometry of the first and second filter media 12, 14.
  • the first drain 8 has a plurality of fluid passage holes of dimensions smaller than the particle size of the second filter media. 14 preventing the granules from escaping through the outlet 6.
  • the second drain 10 has a plurality of fluid passage holes smaller than the granulometry of the first filter medium 12. This again prevents the granules from crossing the second drain 10 and mix with the second filter medium 14. Thanks to avoiding this mixture, the permeate flow at outlet 6 is maximized.
  • the drains may simply be a mesh or a plurality of grooves sufficiently narrow to prevent the passage of the granules of filter media.
  • the second drain 10 has a plurality of second windows 18 of larger dimensions than the granulometry of the first filter medium 12, and which are covered with a second mesh 22 which it has the plurality of fluid passage orifices of dimensions smaller than the granulometry of the first filter medium 12.
  • a backwash can be carried out, consisting of operating the filter in the opposite direction, so that the flow is directed from the outlet 6 to the inlet 4.
  • the first drain 8 consists of a steel plate disc having a plurality of first windows 16 of larger dimensions than the granulometry of the second filter means 14.
  • the first windows 16 are covered with a first mesh 20 which it has a plurality of fluid passage orifices of dimensions smaller than the granulometry of the second filter medium 14.
  • the disk extends along the entire cross section of said chamber 2, thanks to the which, the outlet 6 can have a much larger cross section. This again facilitates the flow and therefore further reduces the loss of charge at the outlet and therefore also reduces the energy consumption of the filter.
  • the first drain 8 and the second drain 10 form an insertable drain device and adjusted to the walls of said chamber 2 as the one seen in Figures 10A and 10B.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présente invention concerne un filtre (1) à matrice granulaire utilisé pour filtrer un fluide, lequel filtre comprend une chambre (2) intérieure comportant une entrée (4) et une sortie (6) de perméat, un premier drain (8) qui couvre la sortie (6) et un premier milieu filtrant (12) granulaire, traversé par le fluide. Le filtre comprend également un second milieu filtrant (14) granulaire, disposé dans la chambre (2) entre le premier milieu filtrant (12) et le premier drain (8). Le premier milieu filtrant (14) présente une perméabilité supérieure à celle du premier milieu filtrant (12). Le filtre (1) comporte un second drain (10) disposé pour séparer physiquement les premier et second milieux (12, 14) filtrants, lequel second drain (10) est doté d'une pluralité d'orifices de passage de fluide dont les dimensions sont inférieures à la granulométrie dudit premier milieu filtrant (12). En dernier lieu, le premier drain (8) présente une pluralité d'orifices de passage de fluide dont les dimensions sont inférieures à la granulométrie dudit second milieu filtrant (14).
PCT/ES2016/070369 2015-05-29 2016-05-17 Filtre à matrice granulaire WO2016193511A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201530629U ES1139983Y (es) 2015-05-29 2015-05-29 Filtro de matriz granular
ESU201530629 2015-05-29

Publications (1)

Publication Number Publication Date
WO2016193511A1 true WO2016193511A1 (fr) 2016-12-08

Family

ID=53290866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2016/070369 WO2016193511A1 (fr) 2015-05-29 2016-05-17 Filtre à matrice granulaire

Country Status (2)

Country Link
ES (1) ES1139983Y (fr)
WO (1) WO2016193511A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU850137A1 (ru) * 1979-04-18 1981-07-30 За витель Семененко, Е. В. Григорюк, И. Н. Державин, Б. Семененко и Л. П. Алексеев Фильтр дл очистки шахтных вод
SU899075A1 (ru) * 1977-05-04 1982-01-23 Государственный Проектный Институт По Водоснабжению,Канализации И Гидротехническим Сооружениям "Харьковский Водоканалпроект" Двухъ русный фильтр дл очистки природных и сточных вод
WO2007080115A2 (fr) * 2006-01-16 2007-07-19 Mauro Bonatti Filtre pour fluide, en particulier pour de l'eau d'irrigation ou pour de l'eau a usage domestique en general
US20100209315A1 (en) * 2009-02-16 2010-08-19 Niknafs Hassan S Vessel containing fluid distribution media
US20110056881A1 (en) * 2009-09-09 2011-03-10 Obshtshestvo S Ogranichennoy Otvetstvennostyu "Firma "Ratna" Household water filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU899075A1 (ru) * 1977-05-04 1982-01-23 Государственный Проектный Институт По Водоснабжению,Канализации И Гидротехническим Сооружениям "Харьковский Водоканалпроект" Двухъ русный фильтр дл очистки природных и сточных вод
SU850137A1 (ru) * 1979-04-18 1981-07-30 За витель Семененко, Е. В. Григорюк, И. Н. Державин, Б. Семененко и Л. П. Алексеев Фильтр дл очистки шахтных вод
WO2007080115A2 (fr) * 2006-01-16 2007-07-19 Mauro Bonatti Filtre pour fluide, en particulier pour de l'eau d'irrigation ou pour de l'eau a usage domestique en general
US20100209315A1 (en) * 2009-02-16 2010-08-19 Niknafs Hassan S Vessel containing fluid distribution media
US20110056881A1 (en) * 2009-09-09 2011-03-10 Obshtshestvo S Ogranichennoy Otvetstvennostyu "Firma "Ratna" Household water filter

Also Published As

Publication number Publication date
ES1139983U (es) 2015-06-15
ES1139983Y (es) 2015-09-07

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