JP2008212852A - Filtering apparatus, its cleaning method, and detoxifying system equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filtering apparatus enabling the stable operation by smoothly draining a cleaning liquid upon cleaning a filter element without remaining inside a filter housing to prevent solid substances having small gravity from remaining inside the filter housing and prevent these solid substances from adhering to the filter element, and a liquid detoxifying system equipped with the filtering apparatus. <P>SOLUTION: The filtering apparatus is constituted in that an untreated liquid is introduced to an outside chamber formed outside the filter element, and the solid substances is filtered through the filter element, thereafter the liquid is flown out to the inside chamber of the filter element. The apparatus is provided with ejection nozzles for blowing the cleaning liquid for cleaning the filter element on the outer peripheral surface of the filter element and a plurality of drain discharge ports along the height direction of the filter element to open the respective drain discharge ports facing the outer peripheral surface of the filter element, and the outlet side of the drain discharge port is connected to a drain pipe with an on-off valve. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention mainly relates to a filter device applied to ballast water treatment in which microorganisms in untreated seawater are removed to form clean treated seawater and accommodated in a ballast tank, and a cleaning method thereof.

In order to avoid the occurrence of marine pollution and pollution, the liquid stored in the ballast water tank, that is, ballast water when navigating in a state where oil is not installed in a ship such as a tanker is disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 11-264895). As is provided in Japanese Patent Publication No. JP-A-2001-259259, a detoxification process is performed to remove a solid matter including microorganisms in an unprocessed liquid to obtain a clean process liquid.
That is, in the technique of Patent Document 1, plant water purification means for purifying stored water during operation of the plant, which is a liquid that applies centrifugal force to the stored water to separate solids from the stored water. A cyclone device is provided, and the stored water after the solids separation process by the liquid cyclone device is filtered through a filter device to be returned to the suppression pool.

And about the filter apparatus used for the said detoxification process means, many inventions and inventions are provided conventionally, and there exists a technique of patent document 2 (patent 2714914 gazette) in one of them.
In such a technique, an untreated liquid is introduced into an outer chamber formed outside a cylindrical filter element that is housed in a filter housing and rotates, and the solid is filtered through the filter element before the liquid is filtered. The filter element is configured to flow out into an inner chamber formed inside the filter element. When cleaning the filter element, the cleaning liquid for cleaning the filter element is sprayed from the ejection nozzle to the outer peripheral surface of the filter element, and the drainage is drained from the filter housing. It is discharged from the drain outlet that is open at the bottom of the.

Japanese Patent Laid-Open No. 11-264895 Japanese Patent No. 2714914

  Patent Document 1 used as a means for mechanically removing solids in a liquid in a liquid detoxification treatment apparatus as provided in Patent Document 1 (Japanese Patent Laid-Open No. 11-264895) 2 (Patent No. 2714914) is used, but the filter device of Patent Document 2 has the following problems to be solved.

That is, the solid matter containing microorganisms mixed in the seawater carried into the detoxification processing apparatus as described above has a specific gravity such as plankton that is almost the same as that of seawater from a solid matter having a high specific gravity such as sand. Solids with a wide range of specific gravity are mixed up to solids.
The filter device used in the detoxification processing device has a filtration accuracy of about 10 to 40 μm, and the drainage of the cleaning liquid that has passed through the filter device has a lot of plankton having a specific gravity almost equal to that of seawater. included.

  However, in the filter device provided in the above-mentioned patent document 2, when cleaning the filter element, a cleaning liquid for cleaning the filter element is sprayed from the ejection nozzle to the outer peripheral surface of the filter element, and the drainage is discharged from the filter housing. Since solids having a specific gravity similar to plankton are almost the same as seawater are accumulated in the filter housing and floated on the upper part of the cleaning liquid because they are discharged from the drain outlet opening in the lower part. It remains in the filter housing without being discharged from the drain outlet provided at the lower part of the filter housing.

For this reason, in such a conventional technique, as the operating time elapses, solid matter having a small specific gravity remaining in the filter housing adheres to the filter element, and the filtration function of the filter element is lowered, and the detoxification treatment device. It may happen that normal operation of the vehicle becomes impossible.
When the flow rate of the cleaning liquid is increased in order to avoid the above-described problems, the cleaning liquid water intake time increases, the operation efficiency of the apparatus decreases, and the capacity of the pump for taking in and circulating the cleaning liquid is increased, resulting in an apparatus cost. Will increase.

  Therefore, in view of the problems of the prior art, the present invention makes it possible to smoothly drain the drainage of the cleaning liquid at the time of cleaning the filter element without stagnation in the filter housing, so that the solid matter having a small specific gravity stays in the filter housing. Another object of the present invention is to provide a filter device capable of performing stable operation while avoiding the occurrence of adhesion thereof to the filter element, and a liquid detoxification processing device provided with the filter device.

The present invention achieves such an object by introducing an untreated liquid into an outer chamber formed outside a rotatable cylindrical filter element housed in a filter housing, and passing the liquid through the filter element to form a solid substance. In the filter device configured to filter the filter element and then to flow into the inner chamber formed inside the filter element, a spray nozzle for spraying a cleaning liquid for cleaning the filter element on the outer peripheral surface of the filter element is provided. A drain having a plurality of drain outlets along the height direction of the filter element, each drain outlet facing the outer peripheral surface of the filter element, and an outlet valve on the outlet side of the drain outlet. It is connected to a tube.
In this invention, it is preferable that the drain discharge ports are disposed at least at two positions, at least a position facing the upper end portion in the height direction of the filter element and a position facing the lower end portion in the height direction.

  Further, the invention of the method for cleaning the filter device comprises introducing an untreated liquid into an outer chamber formed outside a rotatable cylindrical filter element housed in a filter housing, and passing the liquid through the filter element. A method of cleaning the filter element in a filter device configured to filter an object and then flow out into an inner chamber formed inside the filter element, the cleaning liquid for cleaning the filter element being discharged by an ejection nozzle The filter element is sprayed on the outer peripheral surface of the filter element, and drainage drained after the filter element is washed out from a plurality of drain discharge ports provided along the height direction of the filter element.

The following configuration is also included in the present invention.
A plurality of the filter elements are provided in the single filter housing, and the same number of the ejection nozzles as the filter elements are provided so as to face a portion of the outer periphery of each filter element adjacent to the inner wall of the filter housing.

Specifically, the arrangement structure of the filter elements is preferably configured as follows.
(1) The filter housing is formed of a cylindrical body, and a plurality of the filter elements are provided along the circumferential direction of the filter housing and close to the inner wall of the filter housing.
(2) The filter housing is formed in a rectangular cylinder, and a plurality of the filter elements are provided close to the four inner walls of the filter housing.

  Further, the present invention may be configured such that the ejection nozzle is attached to a distal end portion of a flexible cleaning liquid tube so as to be movable in the height direction of the filter element.

  Further, in the present invention, an untreated liquid is introduced into an outer chamber formed outside a rotatable cylindrical filter element housed in a filter housing, and the solid is filtered through the filter element. The filter element in a filter device configured to flow out into an inner chamber formed inside the filter element, the cleaning liquid being poured into the inner chamber of the filter element, Also included is a filter element cleaning method configured to lead out drain drain water after cleaning the filter element from a plurality of drain outlets provided along the vertical direction.

  Further, the present invention is a liquid detoxification treatment apparatus that removes microorganisms in an untreated liquid and converts it to a clean treatment liquid, and stores the treatment liquid in a ballast tank, and applies a centrifugal force to the liquid. A centrifugal solid-liquid separation device for separating solids from liquid, and a filter device for separating residual solids by filtering the liquid, and the centrifugal solid-liquid separation of a liquid processing line through which the liquid flows In a liquid detoxification treatment apparatus comprising a liquid electrolysis apparatus that electrolyzes all or part of the liquid in an electrolytic cell to generate a chlorine-containing substance on the downstream side of the apparatus and the filter apparatus, It is preferable to use a filter device having the above configuration.

  According to the present invention, the cleaning liquid for cleaning the filter element is sprayed on the outer peripheral surface of the ejection nozzle filter element, and the drain discharge port for opening the drain facing the outer peripheral surface of the filter element and introducing the drain water is provided at the height of the filter element. Since a plurality of drain elements are provided along the height direction of the filter element from the upper end portion to the lower end portion along the direction and each drain discharge port is connected to the drain pipe, the drain drainage in the filter housing is From the upper end portion to the lower end portion, a plurality of drain outlets provided along the height direction of the filter element allow a solid matter such as plankton to be discharged from the drain outlet at the upper end portion and the specific gravity such as sand. The height of the filter element is such that solids with a large size are discharged from the drain outlet at the lower end. Can be discharged from the countercurrent entire evenly, drain drainage of the cleaning liquid during cleaning of the filter element can be carried out smoothly without stagnation in the filter housing.

As a result, as in the prior art, solids having a small specific gravity remain in the filter housing without being discharged from the drain discharge port, and the residual solids adhere to the filter element, thereby reducing the filtration function of the filter element. Thus, it is possible to avoid the occurrence of a situation in which the normal operation of the liquid detoxification processing device equipped with the filter device becomes impossible, and the device can be stably operated.
Therefore, an increase in the flow rate of the cleaning liquid and an increase in the intake time of the cleaning liquid accompanying the increase in the flow rate of the cleaning liquid are unnecessary to avoid the problems as in the prior art, thereby reducing the operating efficiency of the detoxification processing apparatus. This can be prevented and an increase in device cost can be avoided.

In addition, if a plurality of filter elements are provided in a single filter housing and the number of ejection nozzles is set to be equal to the number of filter elements facing the portion of the outer periphery of each filter element that is close to the inner wall of the filter housing, A plurality of filter elements provided in the filter housing can simultaneously filter the liquid, and a large amount of liquid can be filtered with a small installation area.
Further, when cleaning the filter elements, each filter element can be easily cleaned in a short time by simultaneously spraying the cleaning liquid from the ejection nozzle provided for each filter element.
In addition, since a plurality of drain discharge ports may be provided in the height direction in a single filter housing for a plurality of filter elements, the number of open / close valves that open and close each drain discharge port can be reduced.

  Further, if the ejection nozzle is mounted on the tip of the flexible cleaning liquid pipe and is provided so as to be movable in the height direction of the filter element, one ejection nozzle is provided in the height direction of the filter element. Since the filter element can be cleaned by moving to the position, the number of ejection nozzles can be reduced, the structure of the filter element cleaning means can be simplified, and the number of parts can be reduced.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.

FIG. 7 is a system diagram of a detoxifying apparatus for marine ballast water to which the present invention is applied.
In FIG. 7, reference numeral 1 denotes a screen for filtering untreated seawater to capture foreign matters such as dust, and 2 is a transport pump for transporting seawater to the seawater treatment line 11.
Seawater pumped through the seawater treatment line 11 by the transport pump is introduced into the filter device 4 that is the gist of the present invention. Details of the filter device 4 will be described later.

The liquid after the solid matter (fine particles) is separated by the filter device 4 is sent to the seawater electrolysis device 60. In addition, drain water from the drain outlet 23 (details will be described later) of the filter device 4 is discharged to the drain line 10 b through the drain pipe 28.
The seawater electrolyzer 60 electrolyzes seawater to produce sodium hypochlorite (hereinafter referred to as hypochlorous acid) from the seawater. In order to perform such electrolysis, the electrolytic cell 7 is disposed in a bypass line 7 a that branches from the downstream portion of the filter device 4 of the seawater treatment line 11 and merges at the inlet side of the ballast water tank 5. Seawater for electrolysis is introduced into the electrolytic cell 7 by a pump 12 provided in the bypass line 7a.

Hypochlorous acid generated in the electrolytic cell 7 of the seawater electrolyzer 60 is injected into the seawater treatment line 11 through the bypass line 7a.
The treated seawater that has been subjected to the above-described solid capturing process larger than the filtration accuracy set in the filter device 4 and the generation and injection of hypochlorous acid by the seawater electrolysis device 60 is a ballast water tank. 5 and is accommodated in the ballast water tank 5.
Further, from the seawater treatment line 11 after joining the bypass line 7a, a part of the treated seawater is returned to the suction side of the transport pump 2 through the reprocessing line 11a and the above processing is performed.
The present invention relates to a filter device 4 applied to such a seawater detoxification device.

FIG. 1 is a system diagram showing the overall configuration of a filter device according to a first embodiment of the present invention, and FIG. 2 is a partial cross-sectional view perpendicular to the axis of the filter device.
In FIG. 1, a filter element 21 made of a cylindrical body whose upper and lower parts are closed is housed inside a cylindrical filter housing 27. The filter element 21 can be rotated by a motor 43 connected to the upper part of the central shaft 44.
Seawater is introduced into the outer chamber 24 (see FIG. 2) of the filter housing 27 from the transport pump 2 through the seawater inlet 37, and the seawater passes through the filter element 21 from the outer periphery to the inner periphery, and is solidified. The matter (fine particles) is separated by filtration, flows out into the inner chamber 26 (see FIG. 2), and is sent to the seawater treatment line 11 through the filtrate pipe 36.

Next, the cleaning system of the filter device 4 will be described. A plurality of sets (four sets in this example) of ejection nozzles 22 are arranged along the height direction of the filter element 21, and as shown in FIG. A cleaning liquid for cleaning the filter element 21 is sprayed from each ejection nozzle 22 onto the outer peripheral surface of the filter element 21.
A cleaning liquid is supplied to each of the ejection nozzles 22 by a cleaning pump 33 through cleaning liquid tubes 39 and 32. Supply and shut-off of the cleaning liquid to each of the ejection nozzles 22 are performed by an on-off valve 34 that is an electromagnetic valve provided for each of the ejection nozzles 22.

The filter housing 27 is provided with a plurality (four in this example) of drain discharge ports 23 along the height direction of the filter element 21. Each drain discharge port 23 is opened to face the outer peripheral surface of the filter element 21, and drainage drainage at the time of cleaning the filter element 21 can be introduced into the drain discharge port 23 from a plurality of positions in the height direction of the filter element 21. It has become.
The outlet side of each drain outlet 23 is connected to a drain pipe 28 having an on-off valve 29.

The drain discharge port 23 has at least two positions, ie, a position facing the upper end portion in the height direction of the filter element 21 and a position facing the lower end portion in the height direction, and one or a plurality of positions (in this example, two positions). By disposing, drainage drainage can be discharged uniformly from the height direction of the filter element 21.
35 is a control device, and the control device 35 is for the rotation speed of the motor 43 for the filter element 21, the rotation speed of the washing pump 33, the opening / closing of the on-off valve 34 for the ejection nozzle 22, and the drain pipe 28. The opening / closing of the opening / closing valve 29 is controlled.

In the first embodiment, when the filter element 21 is cleaned, the opening / closing valve 34 of each of the ejection nozzles 22 is opened and the cleaning pump 33 is operated, so that the outer surface of the filter element 21 is ejected from each of the ejection nozzles 22 as shown in FIG. The solids (fine particles) 25 captured by the filter element 21 are separated.
At the same time, the on-off valve 29 on the discharge side is opened. A plurality of (four in this example) drain discharge ports are provided along the height direction of the filter element 21 from the upper end portion to the lower end portion of the filter element 21 in the height direction. 23 and discharged to the drainage line 10b (see FIG. 7) through the drain pipe 28.

  According to the first embodiment described above, the cleaning liquid for cleaning is sprayed to the outer peripheral surface of the filter element 21 by the ejection nozzle 22, and the drain discharge is performed so as to open toward the outer peripheral surface of the filter element 21 and introduce drain drainage. A plurality of outlets 23 are provided along the height direction of the filter element 21 from the upper end portion to the lower end portion in the height direction of the filter element 21, and each drain discharge port 23 is connected to the drain pipe 28. The drain discharge port 23 provided with a plurality of drain discharges along the height direction of the filter element 21 from the upper end portion of the filter element 21 in the height direction to the lower end portion allows the solid matter such as plankton to have an upper end. The solid matter discharged from the drain outlet 23 of the site and having a large specific gravity such as sand is drained from the lower end site. It can be discharged uniformly from the entire height direction of the filter element 21, such as being discharged from the discharge port 23, and drainage drainage of the cleaning liquid at the time of cleaning the filter element 21 can be retained in the filter housing 27. It can be performed smoothly.

As a result, as in the prior art, solid matter having a small specific gravity remains in the filter housing 27 without being discharged from the drain outlet 23, and the residual solid matter adheres to the filter element 21 to thereby remove the filter element 21. It is possible to avoid the occurrence of a situation where the filtration function is lowered and the normal operation of the liquid detoxification treatment apparatus equipped with the filter device 4 becomes impossible, and the device can be stably operated.
Therefore, an increase in the flow rate of the cleaning liquid and an increase in the intake time of the cleaning liquid accompanying the increase in the flow rate of the cleaning liquid are unnecessary to avoid the problems as in the prior art, thereby reducing the operating efficiency of the detoxification processing apparatus. This can be prevented and an increase in device cost can be avoided.

3 and 4 are cross-sectional views perpendicular to the center of the filter device according to the second embodiment of the present invention.
In the second embodiment, a plurality of filter elements 21 are provided in a single filter housing 27, and the ejection nozzle 22 is opposed to a portion of the outer periphery of each filter element 21 that is close to the inner wall of the filter housing 27. The same number of filter elements 21 are provided.

In the first example shown in FIG. 3, the filter housing 29 is formed of a cylindrical body, and a plurality of filter elements 21 are provided along the circumferential direction of the filter housing 27 and close to the inner wall of the filter housing 27 ( 6 in this example).
Further, in the second example shown in FIG. 4, the filter housing 27 is formed in a rectangular cylinder, and a plurality of the filter elements 21 are provided close to the four inner walls of the filter housing 27 (four in this example). Provided.
3 to 4, the same members as those in the first embodiment are denoted by the same reference numerals.

According to the second embodiment, a plurality of filter elements 21 are provided in a single filter housing 27, and the ejection nozzle 22 is opposed to a portion of the outer periphery of each filter element 21 that is close to the inner wall of the filter housing 27, Since the same number of filter elements 21 are provided, liquid can be simultaneously filtered by a plurality of filter elements 21 provided in a single filter housing 27, and a large amount of liquid can be filtered with a small installation area. It becomes possible to process.
Further, when the filter element 21 is cleaned, each filter element 21 can be easily cleaned in a short time by simultaneously spraying the cleaning liquid from the ejection nozzles 22 provided for each filter element 21 onto each filter element 21.
Further, since a plurality of drain outlets 23 need only be provided in the height direction in a single filter housing 27 for the plurality of filter elements 21, the number of open / close valves that open and close each drain outlet 23 is set. Can be reduced.

FIG. 5 is a system diagram showing the overall configuration of the filter device according to the third embodiment of the present invention.
In this third embodiment, the ejection nozzle 22 is mounted on the tip of a flexible pipe (cleaning liquid pipe) 45 made of a flexible material such as a rubber hose and can be moved in the height direction of the filter element 21. Provided.
Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals.
According to the third embodiment, since one jet nozzle 22 can be moved in the height direction of the filter element 21 to clean the filter element 21, the number of jet nozzles 22 can be reduced, The structure of the filter element cleaning means is simplified and the number of parts can be reduced.

FIG. 6 is a longitudinal sectional view of a filter device according to a fourth embodiment of the present invention.
In the fourth embodiment, when the filter element 21 is washed, the on-off valve 47 a of the filtrate outlet 47 is closed and the on-off valve 48 a of the washing liquid pipe 48 is opened, so that the washing liquid inlet 49 provided at the upper part of the filter element 21 is opened. The solid material is introduced into the inner chamber 26 (see FIG. 2) of the filter element 21 and the solid matter is washed out from the inner chamber 26 through the filter element 21 and then led out to the outer chamber 24. As in each of the embodiments, the filter Drain drainage after cleaning the filter element 21 is led out from a plurality of drain outlets 23 provided along the height direction of the element 21, and the on-off valve 29 of the drain pipe 28 is opened and discharged to the outside through the drain pipe 28. It is configured as follows.
In this case, the ejection nozzle 22 and its associated piping as in the above embodiments are not required, and the structure of the cleaning device is simplified.
Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals.

  According to the present invention, the drainage of the cleaning liquid at the time of cleaning the filter element is smoothly performed without stagnation in the filter housing, so that the solid matter having a small specific gravity is retained in the filter housing and the filter element is retained in the filter element. It is possible to provide a filter device capable of performing stable operation while avoiding the occurrence of adhesion, and a liquid detoxification treatment device including the filter device.

1 is a system diagram showing an overall configuration of a filter device according to a first embodiment of the present invention. It is a fragmentary sectional view at right angles to the axis of the filter device in the first embodiment. It is sectional drawing orthogonal to the center of the 1st example of the filter apparatus which concerns on 2nd Example of this invention. It is sectional drawing orthogonal to the center of the 2nd example of the filter apparatus which concerns on 2nd Example of this invention. FIG. 6 is a view corresponding to FIG. 1 showing a third embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 1 showing a fourth embodiment of the present invention. It is a systematic diagram of the detoxification processing apparatus for ballast water for ships to which the present invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screen 2 Conveyance pump 4 Filter apparatus 5 Ballast water tank 7 Electrolyzer 11 Seawater treatment line 21 Filter element 22 Jet nozzle 23 Drain discharge port 24 Outer chamber 26 Inner chamber 27 Filter housing 28 Drain pipe 33 Washing pump 34 On-off valve 45 Flexible pipe 60 Seawater electrolyzer

Claims (9)

  An untreated liquid is introduced into an outer chamber formed outside a rotatable cylindrical filter element that is housed in a filter housing, and the solid is filtered through the filter element before the inside of the filter element. In the filter device configured to flow out into the formed inner chamber, a jet nozzle for spraying a cleaning liquid for cleaning the filter element to the outer peripheral surface of the filter element is provided, and along the height direction of the filter element A filter comprising a plurality of drain outlets, each drain outlet facing the outer peripheral surface of the filter element, and an outlet side of the drain outlet connected to a drain pipe having an on-off valve. apparatus.   2. The filter device according to claim 1, wherein the drain discharge ports are disposed at least at two positions, a position facing the upper end portion in the height direction of the filter element and a position facing the lower end portion in the height direction.   A plurality of the filter elements are provided in a single filter housing, and the same number of the ejection nozzles as the filter elements are provided facing a portion of the outer periphery of each filter element adjacent to the inner wall of the filter housing. The filter device according to claim 1.   4. The filter device according to claim 3, wherein the filter housing is formed of a cylindrical body, and a plurality of the filter elements are provided along a circumferential direction of the filter housing and close to an inner wall of the filter housing.   4. The filter device according to claim 3, wherein the filter housing is formed of a rectangular cylinder, and a plurality of the filter elements are provided close to four inner walls of the filter housing.   The filter device according to claim 1, wherein the ejection nozzle is attached to a distal end portion of a flexible cleaning liquid tube and is movable in the height direction of the filter element. An untreated liquid is introduced into an outer chamber formed outside a rotatable cylindrical filter element that is housed in a filter housing, and the solid is filtered through the filter element before the inside of the filter element. A method of cleaning the filter element in a filter device configured to flow out into an inner chamber formed,
The cleaning liquid for cleaning the filter element is sprayed to the outer peripheral surface of the filter element by an ejection nozzle, and drainage water after cleaning the filter element is discharged from a plurality of drain discharge ports provided along the height direction of the filter element. A method for cleaning a filter device.   An untreated liquid is introduced into an outer chamber formed outside a rotatable cylindrical filter element that is housed in a filter housing, and the solid is filtered through the filter element before the inside of the filter element. A method for cleaning the filter element in a filter device configured to flow out into an inner chamber formed, wherein a cleaning liquid is introduced into the inner chamber of the filter element and is provided along a height direction of the filter element. A method for cleaning a filter device, comprising: draining drain water after cleaning the filter element from a plurality of drain outlets.   A liquid detoxification treatment apparatus that removes microorganisms in an untreated liquid and converts it to a clean treatment liquid, and stores the treatment liquid in a ballast tank, and applies a centrifugal force to the liquid. A centrifugal solid-liquid separation device for separating solids from the liquid, and a filter device for filtering the liquid to separate residual solids, and the centrifugal solid-liquid separation device for a liquid processing line through which the liquid flows, and In a liquid detoxification treatment apparatus comprising a liquid electrolysis apparatus that generates a chlorine-containing substance by electrolyzing all or part of the liquid in an electrolytic cell on the downstream side of the filter apparatus, the filter apparatus includes: Item 7. A liquid detoxifying apparatus using the filter device according to Item 1 to 6.

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