Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D33/00—Filters with filtering elements which move during the filtering operation
  • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
  • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
  • B01D33/23—Construction of discs or component sectors thereof

Definitions

• Filter panel for the treatment of liquids, especially for disc wastewater filter equipment
• the subject of the invention relates to a filter panel for the treatment of liquids, especially disc wastewater filter equipment, which has a supporting frame surrounding the permeable surface, as well as at least one filter insert that fills in at least a part of the permeable surface fixed to the supporting frame, where at least a part of the filter insert is formed as a spatial shape consisting of shell elements protruding from the plane, the supporting frame has at least three sides connected to each other, and the supporting frame has one or more supporting ribs running through the permeable surface, where the supporting ribs have a rest surface and at least some of the shell elements of the filter insert are in contact with at least a part of the rest surfaces of the supporting ribs.
• Publication document number WO 2012/158012 and patent specification registration number HU E009445 present modularly constructed wastewater treatment facilities that may be expanded in the case of an increase in the load, what is more, in a given case the effectiveness, performance of certain treatment steps may also be varied.
• the disadvantage of the filter inserts used in disc filtration equipment is that the filter surfaces are prone to become clogged, which significantly reduces the efficiency of suspended solids separation, so reducing the speed of the process.
• a further disadvantage is that the filter inserts used contain planar filter surface elements, which also presents an obstacle to filtration efficiency and filtration performance.
• Our objective with the solution according to the invention was to overcome the deficiencies of the known filter panels and to elaborate a version which, with a given flow cross-section, provides the greatest possible filtration surface and in which the filter panel back-washing characteristics are more favourable than those of the known constructions, furthermore, in which, with the same volume flow, smaller or even fewer devices fitted with the filter panel according to the invention are required in order to achieve the desired effluent water limit value.
• the basis of the idea behind the invention was formed by the recognition that if the filter surface is formed in a different way, i.e. not using the usual planar part-elements but from space-curved surface pieces, e.g.
• the filter panel according to the invention for the treatment of liquids, especially for disc wastewater filtering equipment - which has a supporting frame surrounding the permeable surface, as well as at least one filter insert that fills in at least a part of the permeable surface fixed to the supporting frame, where at least a part of the filter insert is formed as a spatial shape consisting of shell elements protruding from the plane, the supporting frame has at least three sides connected to each other, and the supporting frame has one or more supporting ribs running through the permeable surface, where the supporting ribs have a rest surface and at least some of the shell elements of the filter insert are in contact with at least a part of the rest surfaces of the supporting ribs - is set up in such a way that at least some of the shell elements are formed by a set of curved space element pieces an-anged next to each other, and at least some of the neighbouring curved space element pieces are connected to each other with a curved linking member.
• a further feature of the filter panel according to the invention may be that the curved space element pieces are cylinder pieces.
• the supporting frame has a first carrying member and a second carrying member, and the filter insert is clamped between the first carrying member and the second carrying member. Also, the supporting frame has four sides.
• both the first carrying member and the second carrying member are fitted with supporting ribs, on the rest surface of the supporting ribs of the first carrying member facing the second carrying member there is a negative pattern formed conforming to and following the cross-sectional line of the curved space element pieces and linking members of the filter insert, while on the rest surface of the supporting ribs of the second carrying member facing the first carrying member there is a positive pattern formed conforming to and following the cross-sectional line of the curved space element pieces and linking members of the filter insert.
• the curved space element pieces and the curved linking members are formed from a single material.
• the longitudinal axes of the curved space element pieces forming the shell elements are parallel to one another, and the longitudinal axes are at an angle to any side of the supporting frame that differs from the perpendicular.
• the most important advantage of the filter panel according to the invention is that as a consequence of the novel shape of the filter body in the case of the same flow cross-section a significantly more effective filter surface can be created than in the case of the filter panels of traditional disc filter equipment, and so with a smaller device the same capacity of traditional solutions can be achieved, or in the same equipment volume a greater filtration capacity can be established.
• a further advantage is that due to the curved filter surface profile pieces, which differ from traditional set-ups, significantly more effective back-washing can be achieved, due to which there is significantly less chance of the filter panel becoming clogged or of its effectiveness deteriorating.
• a further advantage deriving from this is that the lifetime of the filter panel according to the invention is greater, and its maintenance demand is lower than that of the usual filter panels.
• Another advantage due to the unusual form is that the curved space element pieces assist the "carrying off of the concentrate sticking to the filter surface, as they guide the concentrate and force it into the appropriate direction, towards the collection channel.
• Another advantage related to the filter panel according to the invention is that equipment fitted with it is able to process the same volume of treatable liquid can be processed with less equipment than devices that use traditional filter panels. Therefore, by using the new filter panel the phase separation capacity of existing wastewater treatment plants can be increased with minimal transformation work without having to increase the area used.
• An additional advantage deriving from this is the small investment cost and the reduction of the specific operation and maintenance costs as well.
• Figure 1 shows a view picture of a possible construction of the filter panel according to the invention, with the filter panel disassembled
• Figure 2 shows a detail of the view of the filter panel according to figure 1 from direction II
• Figure 3 shows a view of the filter panel according to figure 1 from direction III
• Figure 4 shows a view from the front of the filter panel according to the invention in clamped state.
• FIG 1 a version of the filter panel 1 according to the invention that can be fitted into a disc filter unit can be seen in the state before assembly.
• the supporting frame 10 and the filter insert 20 forming the filter panel 1 can be observed.
• the supporting frame 10 consists of the first carrying member 1 1 and the second carrying member 12.
• the first carrying member 1 1 is bordered by side 1 1a, side l ib, side 11c and side l id
• the second carrying member 12 is bordered by side 12a, side 12b, side 12c and side 12d.
• first carrying member 11 and the second carrying member 12 are suitable for firmly retaining the filter insert 20 closed between them.
• first carrying member 1 1 and, naturally, the second carrying member 12 may also have three sides, or even more than four sides.
• the number of sides that the supporting frame 10 has may be determined by the task and the shape of the surface bordered by the receiving structural elements.
• side 1 la, side 1 lb, side 1 lc and side l id of the first carrying member 1 1 border the permeable surface 13.
• the permeable surface 13 is bordered by side 12a, side 12b, side 12c and side 12d as well.
• the filter insert 20 covers the permeable surface 13.
• the first carrying member 11 and the second carrying member 12 also have supporting ribs 14.
• the rest surface 14a of the supporting ribs 14 facing towards the filter insert 20 is formed in such a way so that it completely conforms with the shape and size of the shell elements 21 forming the filter insert 20.
• the rest surfaces 14a of the supporting ribs 14 have a negative pattern 14b - here with a regular wave shape - conforming with the shape of the curved space element pieces 21a forming the shell elements 21 of the filter insert 20.
• the rest surfaces 14a of the supporting ribs 14 running between and linking side 12b and side 12d of the second carrying member 12 have a positive pattern, as the curved space element pieces 21a forming the shell elements 21 of the filter insert 20 are convex when looking from the direction of the second carrying member 12.
• the first carrying member 1 1 and the second carrying member 12 are formed so that when the first carrying member 11 and the second carrying member 12 are in a position fitted together so that there is precisely the amount of space between the negative pattern 14b and the positive pattern 14c of the supporting ribs 14 that equals the thickness of the shell elements 21 of the filter insert 20.
• the internal surface l ie of the first carrying member 1 1 has a negative pattern
• the internal surface 12e of the second carrying member 12 has a positive pattern 12f.
• the part of the negative pattern 1 If on the internal surface l ie of the side 1 1a and its section on the internal surface l ie of side l ib are not the same, instead their structure depends on precisely what cross-sectional shape the curved space element pieces 21 a of the shell elements 21 of the filter insert have.
• the shell elements 21 forming the filter insert 20 consist of curved space element pieces 21a protruding in a wave shape from plane "S", which in this embodiment of the filter panel 1 are cylinder pieces arranged next to each other. Also the curved space element pieces 21 a are linked to each other with the help of the curved linking members 21b. Also observable on figure 1 is that the longitudinal axes 21c of the curved space element pieces 21a parallel to each other are at a non-perpendicular angle "a" to the side 1 1 a of the first carrying member 11.
• FIG 2 an enlarged cross-sectional picture of the shell element 21 and environment of the filter insert 20 can be seen. It can be observed how the two neighbouring curved space element pieces 21a protrude from the plane "S", and how a curved linking member 21b is positioned between each two curved space element pieces 21a. Naturally it is practical if the curved space element pieces 21a and the curved linking members 21b forming the shell elements 21 forming the filter insert 20 are constructed from a single filter material.
• Figure 3 shows an assembled filter panel 1. It can be seen how the first carrying member 1 1 of the supporting frame 10 - and the second carrying member 12 located underneath it, and so not indicated in figure 3 - encloses the shell elements 21 of the filter insert 20, and how the supporting ribs 14 make the supporting frame 10 rigid, at the same time as supporting the shell elements 21. Furthermore it can also be observed that the longitudinal axes 21c of the shell elements 21 really are at a non-perpendicular angle "a" to the sides of the first carrying member 1 1.
• filter panels 1 are positioned in a containing structure 30, which may be a part of the filter equipment.
• a containing structure 30 may be a part of the filter equipment.
• the filter panel 1 with filter insert 20 construction according to the invention may also be suitable for solving numerous, various different filtration tasks, here we do not present the connected equipment, as this does not form the subject of the invention.
• the essence is that the filter panel 1 with an edge form suiting the task and the containing structure 30 fitted with suitable linking pieces may be fitted and fixed into any containing structure 30.
• the filter insert 20 When using the filter panel 1 the liquid passing onto the filter insert 20 of the filter panel 1 flows over the curved space element pieces 21a of the shell element 21 , and depending on the size of the opening of the filter insert 20 of the filter panel, the filter insert 20 retains the particles that are larger than the size of the opening.
• the particles stuck on the input side of the filter panel 1 - in the case of a suitable curved linking member 21b size selected to comply with the size of the opening of the filter insert 20 - are unable to remain, get stuck between two neighbouring curved space element pieces 21a, therefore these sections of the filter insert 20 do not get clogged either.
• the jet of liquid performing the washing of the filter insert 20 - also as a result of the control ability deriving from the shape of the curved space element pieces 21a forming the shell elements 21 of the filter insert 20 - passing along the appropriate "channel” is able to wash out the pores of the filter insert 20 of the filter panel 1 in a shorter time and with greater effectiveness.
• the filter panel according to the invention may be applied to good effect in all places where a reliable filter device that is less prone to faults and clogging is required for the performance of high-capacity and effective phase separation.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Filtering Materials (AREA)
• Filtration Of Liquid (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=89666182

Family Applications (1)

Country Status (5)

Citations (10)

Family Cites Families (2)

• 2013
  • 2013-06-25 CN CN201310256068.1A patent/CN103877775B/zh not_active Expired - Fee Related
  • 2013-12-17 WO PCT/HU2013/000125 patent/WO2014096877A1/en active Application Filing
  • 2013-12-17 AU AU2013366015A patent/AU2013366015B2/en not_active Ceased
  • 2013-12-17 MY MYPI2015702027A patent/MY167988A/en unknown
• 2015
  • 2015-06-19 PH PH12015501416A patent/PH12015501416B1/en unknown

Patent Citations (11)

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