KR20070120144A - Water filtration purification device and method - Google Patents

Abstract

In order to provide the water filtration purification apparatus and method which can reduce the manufacturing cost of the whole apparatus which combined the filtration function and the separation concentration function of a to-be-separated substance, the filtration function and the separation concentration function are comprised separately. That is, even if there are a plurality of filtration separation apparatuses, the whole wastewater generated in each filtration separator can be recovered by one magnetic separator, thereby solving the problem of high cost of the entire apparatus. Thereby, in the water filtration and purification device which combined the filtration function and the magnetic separation function for the purpose of water purification, solid-liquid separation, etc., the water filtration purification apparatus which has high purification | cleaning water quality and low manufacturing cost by making a magnetic separation part more compact Can be provided.

Description

Water filtration purification device and method thereof {APPARATUS FOR WATER FILTRATION / PURIFICATION AND METHOD THEREOF}

The present invention relates to a water filtration purification apparatus and method for the purpose of purifying water, separating solids and liquids (solid-liquid separation), and the like. Particularly, a filtration unit for filtering a substance to be separated (removed) such as a solid; The water filtration which makes it possible to realize without causing a significant cost increase of an apparatus even when processing the to-be-processed fluids, such as a large amount of water, by combining the separation part which isolate | separates and isolates the to-be-dissolved substance isolate | separated by the said filtration. It relates to a purification device and a method thereof.

For the purpose of water purification, solid-liquid separation, etc., for solid-liquid separation, etc., a fine wire mesh or a mesh woven from polymer fibers is used as a water separation filter, and a flocculant is contained in raw water having soil particles as a substance to be separated. And a magnetic component are added to generate a magnetic floc, and the membrane magnetic separation device for obtaining purified water by filtration and separation of the magnetic floc with a filter is already known from Patent Document 1 below. In addition, in this prior art, the magnetic flocs collected by the filter are magnetically separated and removed by the magnetic field generating means provided on the downstream side, and can be recovered as high concentration sludge.

More specifically, in the filtration separation and purification apparatus of this patent document 1, a net is composed of fine stainless steel wire, polyester fiber, or the like, and has a filter separation part having an opening of a mesh of several tens of micrometers, for example. In order to separate fine contaminants smaller than the projected area and the projected diameter of the opening, aluminum floss, polyaluminum chloride, iron polysulfate and magnetic components, which are coagulants, are added to the raw water in advance and stirred, and fine solid suspended solids in the raw water are stirred. In addition, magnetic flocs are formed by combining seaweeds, fungi, and microorganisms in the order of hundreds of micrometers. This magnetic floc cannot pass through an opening with a mesh of several tens of micrometers, and the water that is trapped and separated at a high removal rate and passed through the filter becomes purified water of higher quality.

On the other hand, the magnetic flocs collected on the filter are washed off from the filter by the washing water, and the magnetic flocs rectified near the water surface are sucked by the magnetic force of the magnet stationarily disposed near the water surface, and the magnetic flocs are separated. It is transferred to the sludge recovery tank by the conveying means and excluded. Thereafter, the sludge is usually transported to a disposal site or an incinerator by a truck, processed or composted.

Patent Document 1: Japanese Patent Application Publication No. 2002-273261

However, in the prior art described above, when the apparatus is to be installed in an actual treatment facility to treat a large amount of water, there is a problem that the cost of the apparatus becomes high. This is because, after filtering and separating the generated magnetic flocs with a filter, the magnetic flocs collected on the filter are washed out from the filter by washing water, and the magnetic flocs flowing down from the filtration filter are washed by the washing water. It is a structure which collects and collect | recovers magnetically near the water surface which fell. That is, from the above, the long magnet which generate | occur | produces a magnetic field with the same length as the width | variety of a filter is needed, and it is necessary to provide a filter filtration part and a magnetic separation part in the vicinity of one tank.

For this reason, especially in the case of processing a large amount of raw water, it is necessary to widen the area of the filter to be filtered. Therefore, it is necessary to increase the diameter of the rotating filter drum and lengthen the length of the rotating drum in the rotation center line direction. .

In addition, when a throughput exceeding the processing capacity of one purifier is needed, a plurality of purifiers are provided to purify the raw water. In this case, the filter filtration part and the magnetic separation part need to be provided as pairs, respectively. As a result, the device cost is similarly high. Moreover, as mentioned above, when the length of the rotating drum of a filtration separation part is lengthened, the long magnet suitable for the shaft length of a rotating drum is needed, and the cost of an apparatus becomes high.

In addition, the magnetic force acting on the magnetic flocs in the magnetic separation unit increases when the amount of the magnetic component added increases, and increases when the magnetic field of the magnet increases. Therefore, the use of a magnet having a large magnetic field reduces the amount of the magnetic component to be added, thereby reducing the purification operation cost by reducing the amount of magnetic component used. In other words, if the magnet of the magnetic separation portion of the magnetic floc is composed of a magnet having a very high magnetic field, for example, a superconducting magnet, the amount of the magnetic substance added to the raw water can be reduced to the magnetic floc, but a magnet having a high magnetic field is produced. The manufacturing cost of this high, especially the superconducting magnet which is tens of times higher than the permanent magnet is very high.

As described above, in the structure of the water filtration and purification device according to the prior art, there is a problem that the cost of the purification device becomes high when the raw water is actually installed and treated with a large amount of raw water. Therefore, in the present invention, even in the case of treating a large amount of raw water, the manufacturing cost of the device is not significantly increased, and the production cost and the processing cost of the device can be reduced in view of such problems in the prior art. An object of the present invention is to provide a structure of a water filtration purification device and a method therefor.

In order to achieve the above object, according to the present invention, first, the filtering means for filtering the target fluid including the object to be removed, the separation means for peeling the object to be filtered by the filtering means from the filtering means; And a separation means for separating and introducing the separation fluid including the substance to be removed by the separation means from the processing fluid and separating and concentrating the substance to be removed from the separation fluid. Is provided.

Further, according to the present invention, in order to achieve the above object, the first filtering means for filtering the to-be-removed object for filtering the to-be-processed fluid containing the to-be-removed object, and the said 1st filtration means Introducing a first peeling fluid including a first peeling means for peeling a first to-be-removed object from said first filtering means and a to-be-removed material peeled off by said first peeling means, and removing the to-be-removed object from said peeling fluid 2nd filtration means for filtration, 2nd peeling means for peeling the to-be-removed object filtered by the said 2nd filtering means from the said 2nd filtering means, and the to-be-removed object peeled off by the said 2nd peeling means. Provided is a water filtration purifying apparatus having separation and concentration means for separating and concentrating a substance to be removed from a second separation stream comprising.

Further, according to the present invention, in order to achieve the above object, the filtration step for filtering the target fluid including the object to be removed by filtration means, and the filtration object to be removed by the filtration step The separation fluid which peels from a means, and the peeling fluid containing the to-be-removed object peeled off at the said peeling process by the separation concentrating means is isolate | separated from the to-be-processed fluid, and is removed from the peeling fluid containing the said to-be-removed object A water filtration purification method is provided that includes a separation concentration process for separating and concentrating water.

In the present invention, in the above-described water filtration and purification apparatus and method thereof, a pretreatment means for agglomeration flocculation of the object to be removed at the front end of the first filtration means, and the first filtration means and the second filtration. It is preferred to include pretreatment means for flocculating the object to be removed between the means. Moreover, in this invention, it is preferable in the above-mentioned water filtration apparatus and its method that the number of the separation concentrating apparatus which comprises the said separation concentrating means is smaller than the number of the filtration apparatus which comprises the said filtering means. Moreover, it is also possible to provide the discharge means for discharging the peeling fluid containing the to-be-processed object to the exterior of the said water filtration purification apparatus in the downstream of the said 1st filtration means or the 2nd filtration means.

That is, in the present invention, in order to solve the above problems, the filter filtration unit (filtration means) and the magnetic separation unit (separation means) are separated and installed, and the separation fluid containing the substance to be removed is separated from the processing fluid. Concentrate. As a result, as will be apparent from the following detailed description, the magnetic floc is filtered with a rotary filter in the filtration separator to obtain purified water, and the water (peeling fluid) from which the magnetic floc is washed with the washing water from the rotary filter, namely, magnetic Sewage containing a large amount of floc is collected and introduced into a magnetic separator as a separate pipe, where the magnetic floc is self-recovered at a high concentration. According to this structure, even if there are a plurality of filtration separation devices, sludge can be recovered from the total sewage generated in each filtration separator by one magnetic separator (less than the number of filtration separation devices). Can solve the problem of rising costs.

In the case where the filtration separator and the magnetic separator are each composed of one, the magnet can be shortened and the magnetic separator can be further miniaturized. Thus, the problem of the cost increase of the apparatus can be solved as described above.

As can be seen from the above, according to the present invention, in a water filtration separation and purification apparatus for water purification, solid-liquid separation, and the like, in particular, in a purification apparatus having a structure combining a filtration function and a magnetic separation function, By miniaturizing the magnetic separation unit than the filtration separation unit, there is a practically excellent effect of providing a water filtration and purification apparatus and method capable of high purification water quality and reducing the production cost thereof.

Fig. 1 is a diagram showing the overall configuration of a water filtration and purification apparatus using magnetic separation as a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the detailed structure of the magnetic separation unit in the water filtration and purification device shown in FIG.

FIG. 3 is a sectional view taken along the line A-A of FIG. 2 for showing the detailed structure of the magnetic separator.

Fig. 4 is a diagram showing a schematic configuration of the filtration and purification apparatus as a modification of the first embodiment and the flow of the purification processing.

Fig. 5 is a sectional view showing the structure of the magnetic separator, in particular, in the second embodiment of the present invention.

Fig. 6 is a sectional view showing the structure of the magnetic separator, in particular, in the third embodiment of the present invention.

FIG. 7 is a top sectional view of the structure of the magnetic separator shown in FIG.

Fig. 8 is a diagram showing a processing flow of the water purification device according to the fourth embodiment of the present invention.

Fig. 9 is a diagram showing the processing flow of the water purification apparatus other than that of the fourth embodiment of the present invention as well.

[Description of the code]

1, 5, 15, 32, 35, 37, 43, 45, 60, 62, 64, 67: piping

2: enemies

3: raw water storage tank

4: pump

6: seeding agent adjusting device

7, 14, 23, 47: conduit

8, 9, 10, 16: stirring tank

11, 17, 52, 55: motor

12, 18: stirring blade

13: polymer adjusting device

19: Magnetic Flock

20: pretreatment water

21, 22: preprocessor

24: filtration separator

25: rotary filter

26: liquid level detector

27: driving control device

28: wiring

29, 44: Septic tank

30: septic tank

31: pressure pump

33: cleaning nozzle

34: gutter

36: magnetic separator

38: rotating drum

39: opening

40: mans

41: tank

42: sewage

46: pump

48: shower tube

49: magnet

50, 53: rotating body

51: permanent magnet body

54: axis

56, 57: rotating support

58: spatula

59: sludge recovery tank

61: dewatering device

63: sludge tank

65: treatment sewage tank

66: pump

(First embodiment)

Hereinafter, the details of one embodiment of the present invention will be described with reference to FIGS. 1, 2 and 3. 2 is an enlarged sectional view of the magnetic separator 36 shown in FIG. 1, and FIG. 3 is an A-A sectional view of FIG.

First, FIG. 1 shows the schematic structure of the whole water filtration purification apparatus which concerns on this invention, In the figure, the raw water 2 supplied from the piping 1 is first stored in the raw water storage tank 3, where The raw water 2, which is a water to be treated by removing a large number of millimeters of dust and having fine separated substances, for example, oil particles, organic matter, microorganisms, or the like, is also piped with a predetermined amount by the pump 4. Water) At this time, from the seeding agent adjusting device 6, for example, a flocculant for providing aluminum ions or iron ions, such as a magnetic component such as iron tetratrioxide and a pH adjusting agent, or an aqueous solution such as polyaluminum chloride or iron chloride or ferric sulfate, A polymer reinforcing agent or the like is added into the pipe 5 through the conduit 7 to guide the stirring vessel 10. In this stirring vessel 10, raw water is agitated by the stirring blade 12 which is rotationally driven by the motor 11, thereby producing several hundred micrometers of magnetic micro flocs. Thereafter, a polymer reinforcing agent or the like from the polymer adjusting device 13 is added into the pipe 15 through the conduit 14 to be stirred in the stirring tank 16 and driven by the motor 17. 18 is slowly stirred at low speed to produce pretreated water 20 including magnetic flocs 19 (not shown in FIG. 1) of the order of several millimeters in size. In addition, the processing up to this is the preprocessor 22 which becomes a preprocessing means.

Next, the pretreatment 22 passes the pretreatment water 20 generated by the above-described treatment process to the filtration separator 24 through the conduit 23.

Here, the filtration separator 24 mainly has a rotary filter 25 in which a net (filter) is arranged on an outer surface of a rotating drum, a liquid level detector 26 provided inside the rotary drum, and an operation having a liquid level control function. The control device 27, the wiring 28 which transmits the measurement signal from the liquid level detector 26 to the operation control device 27, the purification tank 29 which temporarily accumulates the purified water filtered in the network, The cleaning tank 30 which lowers the purified water, the pressurizing pump 31 which pressurizes a part of this purified water, and the part of pressurized purified water which wash | sprays the said rotary filter 25 from the outside through piping 32, The washing | cleaning The nozzle 33 and the trough 34 which collects the sewage which flowed down by this injection, ie, the sludge which peeled off from the said network (filter), and the injected purified water (sewage or peeling fluid) are provided. The sewage collected in the trough 34 is pressurized by natural gravity or by a pump (not shown) through the pipe 35, and introduced into the magnetic separator 36 at the rear stage.

That is, in the above-mentioned filtration separator 24, first, the purified water which mixed magnetic floc (that is, the pre-processed water 20 in the stirring tank 16 of the said pre-processor 22) rotates through the piping 23, and filters it. It flows into the inside of (25). In this rotary filter 25, the purified water which mixed the magnetic floc is filtered by a filter, and the magnetic floc in the purified water is removed. The filtered purified water is stored in the water tank 29 and accumulated in the water purification tank 30. Thereafter, it is discharged out of the system through piping 37.

On the other hand, when the magnetic floc is stored on the bottom surface of the rotary filter 25, the water flow resistance of the mesh surface increases, and the liquid level inside the rotating drum is pretreated water 20 before filtration. It increases more than face value. Thus, the increase in the liquid level of the pretreatment water 20 is detected by the measurement signal from the liquid level detector 26. That is, when it determines with the operation control apparatus 27 having exceeded predetermined water level, the motor (not shown) of the rotary filter 25 is driven, and the pump 31 is operated. As a result, the washing water is waterproof from the nozzle 33, and the magnetic flocks accumulated on the mesh (filter) surface of the rotary filter 25 are washed away, and sewage is collected in the trough 34. That is, the rotary filter 25 is washed and regenerated, and this operation is repeated.

As described above, when the rotary filter 25 is washed and regenerated, the water resistance of the rotary filter 25 is reduced, and as a result, the liquid level of the pretreated water 20 inside the rotary drum is lowered. Therefore, when the operation control apparatus 27 becomes below a predetermined level by the measurement signal from the liquid level detector 26, the rotation control of the rotation filter 25 is stopped by the control signal.

Subsequently, the structure of the magnetic separator 36 will be described with reference to Figs. 3 is a cross-sectional view taken along line AA of FIG. 2, wherein the outer circumferential surface of the rotating drum 38 is made of, for example, fine wire of stainless steel, fine wire of copper or polyester fiber, and has a mesh of several micrometers to several tens of micrometers. The filtration filter is provided as a net (filter) 40 and further includes an opening 39.

As shown in FIG. 2, the wastewater 42 introduced into the water tank 41 is introduced into the drum 38 through the above-described network (filter) 40. At this time, the magnetic floc 19 in the sewage 42 is trapped on the inner surface of the net 40 (filter), while the water separated from the magnetic floc 19 through the net (filter) 40 is purified water. It is discharged from the opening 39. In addition, the power through which the sewage 42 passes through the net (filter) 40 is the difference in liquid level between the sewage 42 and the purified water in the drum 38. In addition, the purified water discharged from the opening 39 is stored in the purified water tank 44 through the pipe 43 as shown in FIG. 1, and also joins the pipe 37 through the pipe 45 to the system. Will be discharged out. On the other hand, the magnetic floc 19 is filtered (separated) on the outer surface of the net (filter) 40 rotating in the counterclockwise direction in FIG. 2, and is deposited and exposed to the atmospheric portion on the liquid surface.

The magnetic flocs 19 filtered (separated) on the outer surface of the rotating net (filter) 40 as described above are separated and collected as follows. That is, in Fig. 1, the purified water in the purified water tank 44 is pressurized by the pump 46, the pressurized purified water is transferred from the conduit 47 to the shower tube 48, and the shower water is removed from the hole. 40) Spray from the inner surface toward the outer surface side. As a result, as shown in FIG. 2, the magnetic flocs 19 accumulated on the outer surface of the network 40 are peeled off by the shower water, and the surface of the network 40 is regenerated. On the other hand, the washed out magnetic flocs 19 are rectified on the water surface of the sewage 42 in the water tank 41.

Here, the rotating magnet 49, which is used as a magnetic field generating means for magnetic separation, is made of a nonmagnetic material, and the permanent magnet body 51 is fixed to a plurality of grooves on the outer surface of the rotating body 50 by an adhesive or the like. Formed. This rotating body 50 has a structure in which the rotation speed is controlled by the motor 52 and rotates, for example.

On the other hand, the sludge conveyance rotating body 53 used for conveying the magnetic flocs 19 which have been magnetically separated is made of a nonmagnetic material, and the sludge conveyance rotating body 53 has a shaft 54 (Fig. The rotation speed is controlled by the motor 55 through 3). As can be seen from the figure, the shaft 54 is supported by the wall of the water tank 41 by the watertight rotary support 56 at the end thereof, and the outer peripheral portion of the rotor 53 at the other end thereof. It is supported by the wall of the water tank 41 through the watertight rotary support 57. In addition, the inside of the rotor 53 is open to the atmosphere.

As is apparent from Fig. 2, the magnet 49 is inserted into the rotor 53 from the atmospheric opening surface of the rotor 53, and the magnet 49 is washed with water as described above. It is provided so that the magnetic floc 19 group wash | cleaned and peeled off may approach the position which rectifies, ie, the position on the rotating drum 40 side. Here, in this embodiment, the shaft center of the rotating body 53 and the shaft center of the rotating body 50 are arrange | positioned so that it may shift | deviate. Although not shown in the figure, the magnet 49 is fixed to a part of the water tank 41 by bolts or the like so as to be located at a predetermined place.

In addition, the rotation direction of the sludge conveyance rotating body 53 and the rotating body 50 provided with the permanent magnet body 51 is the same direction, whereby the group of magnetic flocs 19 attracted by magnetism is Rotate in the direction of movement to the atmosphere. In addition, although the rotation speed of both is preferable, they may differ. In the case of this embodiment, the rotation speed of the rotating body 50 side of the magnet side is larger than the rotating speed of the rotating body 53. That is, it is set so that rotation speed may become high.

In Fig. 2, the group of magnetic flocs 19 washed and peeled off and commutated near the water surface is attracted and moved to the magnet side by the magnetic field of the magnet 49, and the outer side of the magnet 49 is rotated. Is attached to the outer surface of the rotating body 53. Then, it is exposed to air | atmosphere with rotation of the rotating body 53. FIG. In the air, the excess moisture in the magnetic floc 19 group flows down the surface of the rotating body 53 by gravity, whereby the magnetic floc 19 group is further concentrated. In this example, the water content of the magnetic flocs 19 is lowered to about 97% at this stage, that is, high concentration of sludge is obtained.

As described above, the concentrated magnetic flocs 19 on the surface of the rotating body 53 are further moved by the rotation of the sludge conveying rotating body 53. At this time, since the shaft center of the rotating body 53 and the shaft center of the rotating body 50 are disposed to be offset from each other, the shaft core gradually moves away from the magnet 49, whereby the magnetic attraction force is abruptly reduced as it falls from the magnet. As a result, the magnetic flocs 19 are peeled off from the surface of the rotating body 53 by the spatula 58, a part of which is supported by the water tank 41, and falls to the sludge recovery tank 59 by gravity, thereby causing sludge. As separate separation is collected.

The sludge separated and collected and discharged from the raw water in this way is introduced into a dewatering device 61 such as a centrifuge or a belt press, for example, through a pipe 60 of FIG. The water content is concentrated to about 85% or less to prevent water from leaking out, or to about 75% to promote the activation of microorganisms that decompose organic matter at the time of composting. Such highly concentrated sludge is also stored in the sludge tank 63 via the pipe 62. Thereafter, this stored sludge is transported to a disposal site, an incinerator, or a composting plant by, for example, a truck.

Further, the treated sewage dewatered by the dewatering device 61 enters the treatment sewage tank 65 through the pipe 64, and is pressurized by the pump 66, and then, through the pipe 67, the raw water. Joined with the pipe (1) for supplying and returned to the raw water tank (3), it is introduced into the pretreatment process again.

On the other hand, the magnetic separator 36 measures the liquid level of the sewage 42 in the water tank 41 with the sensor 68, and the information is transmitted to the operation control device 27 via the signal line 69. Therefore, the operation control apparatus 27 based on the information, the optimum rotational speed of the rotary drum 48 and the magnetic floc 19 group so that the liquid surface position of the pretreatment water rises and does not overflow from the water tank 41. The optimum speed of the recovery speed is calculated by the optimum amount calculation program input in advance, and the control signal is transmitted to the rotating motor (not shown) of the rotating drum and the rotating body driving motor 55 via the signal line 70. By transmitting, it controls at the optimum rotation speed, respectively.

In addition, as apparent from the above description, the to-be-removed object is filtered from the fluid to be treated (raw water), and the filtered to-be-removed object is peeled off using a part of the to-be-processed fluid (raw water). A fluid (peel-off fluid) containing the remover is isolated from the treatment route of the above-described treated fluid (raw water), and introduced into a magnetic separator, which is a separate concentrating means for separating and concentrating the removed object. As a result, in the magnetic separator, only the fluid (peeling fluid) containing the peeled object to be removed is processed. Therefore, even when the processing capability of the to-be-processed fluid in the processing apparatus of the front end is large, it can fully respond. In this magnetic separator, the to-be-removed object becomes a magnetic floc group, it collect | recovers, it collects as a sludge, collects it, and is then conveyed to a disposal site, an incinerator, or a compost processing plant, and is processed.

In the above-described embodiment, the case where the preprocessor 22 and the filtration separator 24 are the same number (1: 1) has been described. Next, FIG. 4 shows the preprocessor 22 and the filtration separator ( The process flow in the purification apparatus which purifies a large-capacity raw water which becomes a modification which comprised three combinations of 24 and one magnetic separator 36 is shown. That is, the purified water purified by the three preprocessors 22 and the three filtration separators 24 is then joined by the pipe 37 and discharged out of the system. On the other hand, sewage discharged from each filtration separator 24 is collected by the pipe 35 and introduced into the magnetic separator 36.

In this case, the sludge of the magnetic floc is recovered and removed by one magnetic separator 36, and the treated sewage generated during the dehydration is joined to the pipe 37 through the pipe 45 and discharged out of the system. On the other hand, as described above, the treated sewage dewatered by the dewatering device or the like then joins the pipe 1 for supplying the raw water through the pipe 67 to be returned to the raw water tank 3, and again the pretreatment process (preprocessor). (22)].

As apparent from the above description, according to this modification, since all the wastewater generated in the plurality of filtration separators 24 can be recovered by one magnetic separator 36, the cost of the entire purification apparatus can be reduced. .

Further, according to the present modification, a pipe 70 branched from the pipe 35 through the valve 69 is also provided, and the sewage discharged from each filtration separator 24 is sludged from the pipe 70. Guided to the water tank 71 can be suspended. Moreover, such a circuit is an operation method when it becomes impossible to perform magnetic separation especially in the operation | movement in case where magnetic powder is insufficient. In addition, the sewage suspended in the sludge tank 71 is recovered to the land sewage treatment facility by, for example, a pipe 73 through a valve 72, or the sludge kernel is an organic substance or microorganism in seawater. It will be discharged to the ocean as it is.

(2nd Example)

5 shows another embodiment (second embodiment) according to the present invention. The present embodiment differs from the above-described embodiment, in particular, as apparent from the comparison with FIG. 2 above, the sewage 42 is introduced into the magnetic separator 36 through the pipe 35, and the sludge conveyance rotating body A continuous flow passage 68 is disposed along 53, whereby purified water is allowed to flow into the pipe 43. As shown in FIG. In addition, the treated water through the pipe 43 is stored in the purification water tank 44 of FIG. 1, joined to the pipe 37 through the pipe 45, and discharged out of the system.

On the other hand, in the second embodiment, the sewage 42 introduced into the magnetic separator 36 through the pipe 35 flows through the flow path 71, and the magnetic flocs 19 of the permanent magnet 51 It is attracted by the magnetic force and attached to the outer surface of the rotating body 53 by magnetic force. Then, the group of magnetic flocs 19 attached on the surface of the rotating body 53 moves to the atmosphere by the rotation of the rotating body 53. At this time, similarly to the above, since the shaft center of the rotating body 53 and the shaft center of the rotating body 50 are disposed to be offset from each other, the shaft core gradually moves away from the magnet 49, whereby the magnetic attraction force is rapidly reduced as it falls from the magnet. . Then, the magnetic floc group 19 is peeled off from the surface of the rotating body 53 by the spatula 58, which is partially supported by the water tank 41, falls to the sludge recovery tank 59 by gravity, and is collected separately as sludge. do. On the other hand, the purified treatment water is discharged out of the system through the pipe 43.

In addition, according to the second embodiment, in particular, as compared with the structure shown in FIG. 2, there is no need to provide a rotary filter, and the cost of the purification device can be further reduced.

(Third Embodiment)

6 and 7 show another embodiment (third embodiment) according to the present invention. The present embodiment differs from the first embodiment in that the magnet 69 is composed of a superconducting bulk magnet, and the length A between the magnet ends is shorter, in particular in comparison with the above-mentioned FIG. In addition, the magnet 69 by the superconductivity cools the heat insulating body 72 containing the heat insulating vacuum container 70, the superconducting bulk 71, and the end of the heat transfer body 72 in the vacuum container 70. A compressor (73), a compressor (75) for supplying high pressure helium gas to the refrigerator (73) through the pipe (74), and a pipe (76) for recovering the medium pressure gas after the adiabatic expansion from the refrigerator (73) to the compressor (76). It is comprised by). In addition, this magnet 69 is fixedly supported by the support material 77 fixed to the water tank 41.

In these figures, the superconducting bulk 71 is already magnetized by an external magnet, cooled in a freezer at a low temperature, and shows a state in which a magnetic field of several tens of times the permanent magnet exists on the surface of the superconducting bulk 71. In addition, the superconducting bulk 71 is composed of, for example, yttrium-based copper oxide, and the temperature is cooled to 60 K or less by the refrigerator 73 together with the heat transfer body 72, whereby the superconductivity The bulk 71 is cooled to a low temperature to maintain a superconducting state. As described above, when the magnet is made of a superconducting magnet, it is possible to generate a magnetic field several times as large as that of the permanent magnet, so that the magnetic attraction force is increased and the amount of recovery of the magnetic floes per hour is increased.

Therefore, in this embodiment, even if the magnetic field generation range of the magnet is made small, the recovery amount per hour as in the case of the permanent magnet can be ensured, so that the length A of the magnet can be shorter than that of the permanent magnet, In addition, the magnetic separator can be further miniaturized.

(Example 4)

8 and 9 show still another embodiment (fourth embodiment) of the present invention. 8 is a diagram showing a processing flow of the water purification device according to the fourth embodiment. In this embodiment, the raw water is introduced directly into the filtration separator 24 through the pipe 1. Thereafter, the purified water after separating the object to be separated in this filter separator 24 is discharged out of the system through the pipe 37.

On the other hand, sewage generated when the filter of the filtration separator 24 is cleaned, that is, containing the separated soil, is introduced into the preprocessor 22 through the pipe 35. In the pretreatment 22, the pretreatment water including the magnetic floc 19 (not shown in FIG. 8) is generated by performing drug injection, stirring, or the like, as in the pretreatment 22 of the embodiment of FIG. This pretreatment water is then introduced into the magnetic separator 36 through the pipe 23. In the magnetic separator 36, the magnetic flocs 19 are separated by magnetism similarly to the magnetic separator 36 of the embodiment of FIG. 1, and the treated water is joined to the pipe 37 through the pipe 45 to form a sheath. It is discharged out of system. In addition, the magnetically separated magnetic flocs 19 are recovered as sludge by sludge treatment, and the treated sewage from the sludge treatment joins the pipe 1 through the pipe 67 and is purified again as raw water. The same applies to the above.

In addition, in the fourth embodiment, since the raw water is introduced into the filtration separator 24 without performing the above-described pretreatment, the mesh of the filter provided in the filtration separator 24 is applied to the size of the object to be contained in the raw water. Therefore, it is necessary to select the appropriate size. Therefore, as for the filter of this filtration separator 24, the filter whose eyes are finer than the filter of the magnetic separator 36 mentioned above is used normally.

As described above, in the fourth embodiment, only the sewage containing the sewage that is separated and generated when the filter of the filter separator 24 is washed, not the total amount of raw water, needs to be treated by the preprocessor 22. Along with the miniaturization of the processor 22, the manufacturing cost of the whole apparatus can be reduced.

9, the treatment in the purification apparatus which purifies a large-capacity raw water comprised by combining the three filter separators 24 mentioned above, one preprocessor 22, and one magnetic separator 36 is also shown. The flow is shown. That is, according to this configuration, the purified water purified by the three filtration separators 24 is joined by the pipe 37 and discharged out of the system. On the other hand, the sewage discharged from these three filtration separators 24 is collected in the pipe 35 and introduced into the magnetic separator 36 via the preprocessor 22. In this example, the sludge of the magnetic floc is recovered and removed by magnetic separation, and the treated sewage generated at the time of dehydration is joined with the pipe 1 through the pipe 67 to be returned to the filtration separator 24 and is purified again. Is introduced into the treatment process.

As is apparent from the above description, according to the fourth embodiment, the total sewage generated in the plurality of filter separators 24 (in this example, three) can be recovered by one preprocessor and one magnetic separator. Therefore, the cost of the whole water filtration purification apparatus can be reduced.

In addition, in the above embodiment, although the filtration separator 24 demonstrated the case where the drum type filter provided with the rotary filter 25 was used, this invention is not limited only to this, The filtration separator 24 is For example, it is also possible to use other types of filters, such as a membrane filter using a hollow magnetic film, a ceramic filter, and a filtration filter using a particulate filter medium.

In addition, although the above-mentioned embodiment demonstrated the case where the above-mentioned web (filter) 40 was formed especially in the drum form, instead, this network (filter) 40 was comprised in disk form, for example. In addition, it will be apparent that the same effects as described above are produced by the filter configured by arranging a plurality of disks in the longitudinal direction.

In addition, in the above embodiment, especially the third embodiment shown in Figs. 6 and 7, the various refrigerators are applicable as the refrigerator 73. For example, gift markmaphone type, pulse tube type, Solvay type, Belmeyer, Claude, and electronic refrigerators are applicable.

Incidentally, in the above embodiment, a device combining the filtration function and the separation and concentration function has been described, but the present invention is not limited thereto. For example, instead of the magnetic separation function of the separation and concentration means, fine bubbles are supplied into the water and submerged. The so-called bubble floating separator that separates the flocs onto the water by attaching the bubbles to the floes of the flocks and records them on the scam, and separates and removes flocs having a specific gravity larger than seawater by centrifugal force by a liquid cyclone. Separation means with a floc concentration function, such as a centrifugal separator, can be used.

Claims (10)

Filtering means for filtering the fluid to be treated containing the substance to be removed, Peeling means for peeling off the substance to be filtered filtered by the filtering means from the filtering means, and And a separation concentrating means for separating and introducing the separation fluid including the substance to be removed by the separation means from the processing fluid and separating and concentrating the substance to be removed from the separation fluid. The water filtration and purification device according to claim 1, further comprising a pretreatment means for agglomeration flocculation of the substance to be removed at the front end of the filtration means. The water filtration and purification device according to claim 1, wherein the number of devices constituting said separation and concentration means is smaller than the number of devices constituting said filtration means. The water filtration and purification device according to claim 1, further comprising a discharge means for discharging the peeling fluid containing the object to be treated to the outside of the water filtration and purification device on the downstream side of the filtration means. First filtration means for filtering the to-be-removed object for filtering the fluid to be treated including the to-be-removed object, First peeling means for peeling off the first to-be-removed material filtered by said first filtering means from said first filtering means, Second filtration means for introducing a first delamination fluid including the delaminated object to the first delamination means, and filtering the sorbate from the delamination fluid; Second peeling means for peeling off the substance to be filtered filtered by the second filtering means from the second filtering means, and A water filtration and purification device having separation concentrating means for separating and concentrating a substance to be removed from the second release stream including the substance to be removed by the second separation means. 6. The water filtration and purification device according to claim 5, further comprising pretreatment means for flocculating the object to be removed between the first filtration means and the second filtration means. The water filtration and purification device according to claim 5, wherein the number of devices constituting said separation and concentration means is smaller than the number of devices constituting said first filtration means or said second filtration means. The discharge means for discharging the peeling fluid containing the to-be-processed object to the exterior of the said filtrate purification apparatus further in the downstream of a 1st filtration means or a said 2nd filtration means, It characterized by the above-mentioned. Water filtration purification device. A filtration process for filtering the processing fluid including the substance to be removed by the filtering means, A peeling step of peeling off the substance to be filtered filtered by the filtration step from the filtration means, and Separation concentration step for separating the separation fluid containing the to-be-removed object separated in the said peeling process by the separation concentration means from the to-be-processed fluid, and isolate | separating and removing a to-be-removed object from the separation fluid containing the said to-be-removed object. Water filtration purification method comprising a. 10. The method of purifying water filtration according to claim 9, further comprising a step of discharging the peeling fluid containing the object to be treated to the outside of the water filtration and purification device on the downstream side of the filtration means.

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