The filter (1) according to the invention with vertical plates (2) includes plates (2) each including a tube (200) connected to an external manifold (5, 50, 51, 52), and said filter (1) is characterized in that it includes at least two external manifolds (5, 50, 51, 52), in that, for all the plates (2), two adjacent plates (2) are connected to two different external manifolds (5, 50, 51, 52) and in that each plate (2) includes at least one filter element (22), each filter element (22) being constituted of at least two drains (220) and a cloth (221), the (221) having compartments (222) in each of which a drain (220) is inserted. By not discharging two adjacent plates (2) at the same time, only one of the two facing cakes (6) is detached rather than both of them. The construction of these plates (2) enables low inflation of the cloth (221) during discharge and therefore limited movement of the cake (6). It is therefore possible to reduce the space provided between the plates (2) with no risk of causing jams fatal to the operation of the filter (1) when the cakes (6) fall off and with no risk of pressing the discharged cakes (6) onto the plates (2) during filtration. This makes it possible to increase the number of plates (2) in the filter (1).

The disclosure relates to a membrane leaf packet, and a spiral membrane element including a plurality of such membrane leaf packets, including such elements exhibiting enhanced sanitary properties. Such membrane elements can be used for filtration, for example, in food-related fields, including filtering dairy, sugar and/or other liquid streams.

The disclosure relates to a membrane leaf packet, and a spiral membrane element including a plurality of such membrane leaf packets, including such elements exhibiting enhanced sanitary properties. Such membrane elements can be used for filtration, for example, in food-related fields, including filtering dairy, sugar and/or other liquid streams.

A filter includes an inlet side, an outlet side, and a body. The body includes a first substrate that includes an array of inlet holes passing through the first substrate, and a second substrate that includes an array of outlet holes passing through the second substrate. The body further includes an intermediate region that includes a plurality of channels extending along a plane that is transverse or at an angle to a main axis of the filter. Each channel communicates directly or indirectly with at least one of the inlet holes and at least one of the outlet holes. The filter provides a plurality of fluid flow paths through the body from the inlet side to the outlet side.

The system relates to a disk filter for effectively preventing scale formation in a water treatment process, and to a water treatment apparatus and method using the same. The disk filter includes a housing having a cylindrical shape, a raw water inlet formed at a predetermined position on the side surface of the housing, a raw water outlet formed at a central region in the bottom of the housing, a backwash water outlet formed at a central region in the top of the housing, a ceramic filter provided in a circular disk shape inside the housing, and a scale formation inhibitor loaded in a flow channel formed inside the ceramic filter, wherein raw water introduced via the raw water inlet passes through the ceramic filter and then through the flow channel filled with the scale formation inhibitor, and is then discharged via the raw water outlet.

The present invention relates to a ballast water treatment system. The ballast water treatment system comprises: a filter and electrolysis unit for receiving ballast water from the outside, and filtering and electrolyzing the ballast water; a first sensor unit for measuring seawater characteristics of the ballast water passing through the filter and electrolysis unit; a control unit for determining a contamination level of the ballast water according to the measured seawater characteristic values so as to generate control signals for determining the strength of electrolysis and the input amount of chlorine dioxide; a chlorine dioxide generation unit for generating the chlorine dioxide; a UV/TiO.sub.2 system which includes a TiO.sub.2-coated plate, generates an OH radical through an interaction between ultraviolet rays and TiO.sub.2 so as to enable the OH radical to sterilize residual microorganisms included in the ballast water passing through the filter and electrolysis unit; an automatic neutralization treatment device which includes a neutralizing agent, receives a neutralizing agent discharge signal from the control unit, and neutralizes the ballast water passing through the filter and the electrolysis unit; and a second sensor unit for measuring a TRO concentration of the ballast water neutralized in the automatic neutralization treatment device and transferring the measurement result to the control unit, wherein the control unit generates a control signal for controlling an amount of the neutralizing agent discharged from the automatic neutralization treatment device according to the measurement result received from the second sensor unit. Thus, the sterilization efficiency for the ballast water satisfies the USCG standards during the ballasting step for the ballast water.

A third cavity part for forming a filter part of a mesh filter has opening forming pins of the same number as that of openings for forming regular-octagonal openings of the filter part. The opening forming pins are formed at regular intervals along an X-axis direction and a Y-axis direction, and a diameter of an inscribed circle of the regular octagon is equivalent to the dimension between the adjacent opening forming pins along the X-axis direction and along the Y-axis direction. The interval between a first line and a second line adjacent to the first line of the opening forming pins formed at regular intervals along a direction at 45 to the X-axis direction is equivalent to the interval between a third line and a fourth line adjacent to the third line of the opening forming pins formed at regular intervals along a direction at 135 to the X-axis direction.

A third cavity part for forming a filter part of a mesh filter has opening forming pins of the same number as that of openings for forming regular-octagonal openings of the filter part. The opening forming pins are formed at regular intervals along an X-axis direction and a Y-axis direction, and a diameter of an inscribed circle of the regular octagon is equivalent to the dimension between the adjacent opening forming pins along the X-axis direction and along the Y-axis direction. The interval between a first line and a second line adjacent to the first line of the opening forming pins formed at regular intervals along a direction at 45 to the X-axis direction is equivalent to the interval between a third line and a fourth line adjacent to the third line of the opening forming pins formed at regular intervals along a direction at 135 to the X-axis direction.

A fluid filtering apparatus such as for filtering particulates and other materials from treated water includes a tank and a filtering region configured as a plurality of individual effluent regions, defined in part by channel frames, disposed between a plurality of influent regions interposed between the effluent regions. Filter plates having an opening therethrough covered by a filter media are removable receivable in the channel frames, such that filter media in filter plates in adjacent channel frames is in a facing, opposed, relationship. A double sided backwash shoe is scannable in the influent regions, to simultaneously clean opposed filter media exposed thereto. The backwash shoe is free to move inwardly and outwardly of the opposed filter media. Additionally, the tank may include a second filtering region, which is selectively isolatable from the first filtering region.

A fluid filtering apparatus such as for filtering particulates and other materials from treated water includes a tank and a filtering region configured as a plurality of individual effluent regions, defined in part by channel frames, disposed between a plurality of influent regions interposed between the effluent regions. Filter plates having an opening therethrough covered by a filter media are removable receivable in the channel frames, such that filter media in filter plates in adjacent channel frames is in a facing, opposed, relationship. A double sided backwash shoe is scannable in the influent regions, to simultaneously clean opposed filter media exposed thereto. The backwash shoe is free to move inwardly and outwardly of the opposed filter media. Additionally, the tank may include a second filtering region, which is selectively isolatable from the first filtering region.