JP2000246296A - Sludge concentrating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the dehydration treatment of sludge without adding org. and inorg. flocculants to sludge and to prevent the generation of an environmental problem even if conc. sludge is adapted to landfill or utilized as compost. SOLUTION: Sawdust 7 is supplied to the sludge supply tank 16 of a sludge supply system 3 by a sawdust supply system 4 while the rotary disc type dynamics filter device 15 of a dehydration system 11 is sealed by a seal water supply system 6 and mixed with sludge 2 to prepare mixed sludge 8 which is, in turn, supplied to the rotary disc type dynamics filter device 15 to be separated into filtered water 9 and conc. sludge 10 and the filtered water 9 obtained by this separation treatment is stored in the filtered water receiving tank 17 of a filtered water treatment system 12 and the conc. sludge 10 obtained by the separation treatment is stored in a conc. sludge receiving tank 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an urban sewage sludge,
The present invention relates to a sludge concentration system for condensing sludge contained in sewage sludge in rural areas, factory wastewater discharged from food factories, and the like.

[0002]

2. Description of the Related Art In a sludge concentrating system for condensing sludge contained in city sewage, rural sewage, factory wastewater discharged from food factories, etc., a centrifugal separator or a belt press is used. In addition, the sewage and wastewater are dewatered, and the sludge contained in the sewage and wastewater is concentrated to facilitate post-treatment.

[0003] In such a conventional sludge concentration system, when a dewatering treatment is performed using a centrifugal separator or a belt press, an organic coagulant or an inorganic coagulant is added to sewage or wastewater. Add a flocculant, etc.
Dehydration processing is easy.

At this time, most of the coagulant added to the sewage or wastewater remains in the concentrated sludge obtained by the dewatering treatment. However, according to the current sludge treatment method, the concentrated sludge obtained by the dewatering treatment is not used. Is treated by incineration or melting, so heat generated during combustion
The coagulant is thermally decomposed, and there is no problem in environmental protection.

[0005]

However, if the concentrated sludge discharged from the above-mentioned sludge concentration system is used for landfill disposal or compost, there is a possibility that the sludge will be absorbed by the human body through soil contamination and plants. There is a concern that environmental problems will occur, and there is a strong demand for the development of treatment methods for sewage and wastewater that do not cause environmental problems even when used for landfill or composting. Was.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention provides a method of dehydrating sewage and wastewater without adding an organic coagulant or an inorganic coagulant to the sewage or wastewater. A sludge concentration system that can separate into filtered water and concentrated sludge, and prevents environmental problems from occurring even when the concentrated sludge is disposed of in landfill or used for compost. It is intended to provide.

[0007]

According to the present invention, in order to achieve the above-mentioned object, according to the present invention, water is removed from solid content contained in sludge to be treated, and filtered water and concentrated sludge are removed. The sludge concentrating system according to the present invention is characterized in that a rotating disk type dynamics filter device is used as a dewatering device for separating a solid content and water contained in sludge to be treated.

According to a second aspect of the present invention, in the sludge concentrating system according to the first aspect, the filtration filter provided in the rotating disk type dynamics filter device has a pore diameter of 0.5 μm or more. It is characterized in that one of a cloth, a ceramic filter made of a ceramic material, and a metal net filter made of a metal net is used.

According to a third aspect of the present invention, in the sludge concentrating system according to any one of the first and second aspects, sawdust is added to sludge supplied to the rotating disk type dynamics filter device. I have.

According to a fourth aspect of the present invention, in the sludge concentrating system according to any one of the first and second aspects, before the rotating disk type dynamics filter device performs a dewatering process, the rotating disk type dynamics filter is used. It is characterized in that sawdust is previously applied to a filtration filter provided in the apparatus.

According to a fifth aspect of the present invention, in the sludge concentrating system according to any of the third and fourth aspects, the sawdust is “0.1 mm” obtained by pulverizing hardwood or softwood.
It is characterized in that a material having a particle size of ~ 2 mm is selected and used.

According to the first aspect of the present invention, a rotating disk-type dynamics filter device is used as a dehydrating device for separating solid content and water contained in sludge to be treated. Without adding organic or inorganic coagulants to sewage and wastewater, these sewage and wastewater are dehydrated to separate them into filtered water and concentrated sludge, and to landfill sludge. Ensure that no environmental problems occur when disposed of or used for composting.

According to a second aspect of the present invention, as the filter provided in the rotating disk type dynamics filter device, a filter cloth having a pore diameter of 0.5 μm or more, a ceramic filter made of a ceramic material, a metal filter Use one of the metal mesh filters constituted by the mesh. As a result, these sewage and wastewater can be efficiently dehydrated without adding an organic or inorganic coagulant to the sewage or wastewater and reducing the number of times the filter is washed. Separation of the excess sludge from the concentrated sludge and the prevention of environmental problems when the concentrated sludge is landfilled or used for composting.

According to the third aspect of the present invention, the sawdust is added to the sludge supplied to the rotating disk type dynamics filter device, so that an organic flocculant or an inorganic flocculant is added to sewage and wastewater. These sewage and wastewater can be efficiently dehydrated at a sufficient filtration rate without adding any other components to separate the filtered water and the concentrated sludge. Even if it is used for, etc., it does not cause environmental problems.

According to a fourth aspect of the present invention, before the spinning disk type dynamics filter device performs the dehydration process, sawdust is applied to a filter provided in the spinning disk type dynamics filter device in advance. This makes it possible to efficiently dewater these sewage and wastewater without adding an organic coagulant or an inorganic coagulant to the sewage or wastewater, and without previously mixing the sawdust in the sludge. Then, while separating the filtrate into concentrated water and concentrated sludge, environmental problems do not occur even if the concentrated sludge is disposed of in landfill or used for composting.

According to a fifth aspect of the present invention, as the sawdust, "0.1 mm" to "2 mm" obtained by pulverizing hardwood or softwood.
mm ”particle size is selected and used, without adding organic coagulant or inorganic coagulant to sewage and wastewater, and evenly dispersing sawdust in sludge. While dispersing and preventing filter clogging, these sewage and wastewater are efficiently dewatered to separate them into filtered water and concentrated sludge. Ensure that no environmental issues arise when used.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS << Structure Description of Embodiment >> FIG. 1 is a processing system diagram showing an embodiment of a sludge concentration system according to the present invention.

The sludge concentration system 1 shown in FIG. 1 takes in sludge 2 to be treated and supplies a sludge supply system 3 for pre-treatment of dehydration treatment, and supplies a sawdust 7 to the sludge supply system 3 for treatment. While being sealed by the sawdust supply system 4 to be mixed with the target sludge 2, the seal water 5 to supply each part of the system, the seal water supply system 6 to supply the cleaning water, and the seal water 5 supplied from the seal water supply system 6, The sludge (mixed sludge 8) mixed with sawdust 7 supplied from the sludge supply system 3 is subjected to dehydration treatment, separated into filtered water 9 and concentrated sludge 10, and the concentrated sludge 10 is temporarily stored. Dehydration system 11
And a filtered water treatment system 12 for temporarily storing the filtered water 9 discharged from the dehydration system 11, and a part of the filtered water 9 temporarily stored in the filtered water treatment system 12. Is used as washing water, a washing water supply system 13 for supplying the sludge supply system 3 and the dewatering system 11, and a washing wastewater treatment system 14 for returning washing wastewater discharged when the dehydrating system 11 is washed to the sludge supply system 3. Have.

In the sludge concentrating system 1, the sawdust supply system 4 is sealed while the rotating disk type dynamics filter device 15 of the dehydration system 11 is sealed by the seal water supply system 6.
Then, the sawdust 7 is supplied to the sludge supply tank 16 of the sludge supply system 3 and mixed with the sludge 2 to form a mixed sludge 8.
The mixed sludge 8 is supplied to a rotary disk type dynamics filter device 15 to be separated into filtered water 9 and concentrated sludge 10. The filtered water 9 obtained by this separation treatment is filtered into a filtered water treatment system 1
2 and the concentrated sludge 10 obtained by the separation treatment is stored in the concentrated sludge receiving tank 18.
To be stored. Also, every time certain preset washing conditions are met, the washing water supply system 13 supplies the filtered water 9 filled in the filtered water receiving tank 17 or the seal supplied from the seal water supply system 6. Water 5 into sludge supply system 3,
They are led to the dehydration system 11 to be washed.

The sludge supply system 3 is provided with a pipe 19 for taking in the sludge 2 to be treated, and is inserted in the middle of the pipe 19.
When taking in the sludge 2 to be treated, the two valves 20 and 21 which are opened, the sludge 2 supplied through the pipe 19 and the sawdust 7 supplied from the sawdust supply system 4 are used.
And a sludge supply tank 16 for taking in and storing the washing wastewater generated in the washing process, and mixing the sludge 2 and the sawdust 7 stored in the sludge supply tank 16 into a mixed sludge 8. A stirrer 22, a pipe 23 for guiding the mixed sludge 8 stored in the sludge supply tank 16 to the dewatering system 11, and a mixed sludge 8 inserted in the middle of the pipe 23 and stored in the sludge supply tank 16.
When the mixed sludge 8 is turned on and is stored in the sludge supply tank 16,
Supply pipe 24 that guides the mixed sludge 8 supplied to the dewatering system 11 via the pipe 23, and is attached to a portion of the pipe 23 connecting the sludge supply pump 24 and the dewatering system 11. And a pressure gauge 25 for measurement.

Further, the sludge supply system 3 is interposed in a portion of the pipe 23 connecting the sludge supply pump 24 and the sludge supply tank 16, and the mixed sludge 8 stored in the sludge supply tank 16. When the water is introduced into the dehydration system 11, the two valves 26 and 27 that are opened and the pipe 23
A valve 28 that is inserted into a portion connecting the sludge supply pump 24 and the dehydration system 11 and is opened when the mixed sludge 8 stored in the sludge supply tank 16 is guided to the dehydration system 11; A pipe 29 connected to a portion of the pipe 23 connecting the valve 28 and the dehydrating system 11 and returning a part of the mixed sludge 8 discharged from the sludge supply pump 24 to the sludge supply tank 16; When returning part of the mixed sludge 8 discharged from the sludge supply pump 24 to the sludge supply tank 16 in the middle of
And

In the sludge supply system 3, when treating the sludge 2 to be treated, the two valves 20 and 21 are opened, the sludge 2 is taken in via the pipe 19, and the sludge is supplied to the sludge supply tank 16. While operating the stirrer 22, the sawdust 7 and the sludge 2 supplied from the sawdust supply system 4 are mixed to form the mixed sludge 8, and the three valves 26, 27, and 28 are opened. By operating the sludge supply pump 24 while keeping the mixture, the mixed sludge 8 stored in the sludge supply tank 16 is supplied to the dewatering system 11. Also,
When cleaning the dehydration system 11, the valves 26, 27,
28 to the closed state, the washing water supply system 13 to the dehydration system 11
Is prevented from flowing back to the sludge supply tank 16 side.

The sawdust supply system 4 includes a sawdust supply tank 31 in which the sawdust 7 is stored, and a pipe 3 connecting the sawdust supply tank 31 and the sludge supply tank 16.
2 and a valve 33 inserted in the middle of the pipe 32 and opened when the sawdust 7 is injected into the sludge supply tank 16, and the sawdust 7 is supplied to the sludge supply tank 16 at an appropriate time. Thus, mixed sludge 8 is generated.

The seal water supply system 6 is provided with a pipe 34 for taking in the seal water 5, and is inserted in the middle of the pipe 34.
When refilling the seal water 5, the valve 35 is opened.
A seal water supply tank 36 for storing the seal water 5 supplied via a pipe 34;
A pipe 37 for guiding the seal water 5 stored in the pipe 6 to the dewatering system 11 and a seal water 5 inserted in the middle of the pipe 37 and stored in the seal water supply tank 36 to the dewatering system 11 , Seal water supply pump 3 turned on
8 and the pipe 37 are inserted into a portion connecting the seal water supply pump 38 and the seal water supply tank 36,
When the seal water 5 stored in the seal water supply tank 36 is supplied to the dewatering system 11, the valve 39 is opened.
Is connected to a portion of the pipe 37 connecting the seal water supply pump 38 and the dewatering system 11, and the seal water 5 discharged from the seal water supply pump 38 is supplied to the sludge supply pump 2.
4 and a pipe 40 inserted in the middle of the pipe 40,
When the seal water 5 discharged from the seal water supply pump 38 is guided to the sludge supply pump 24, the valve 4 that is opened
1 is provided.

In the seal water supply system 6, the valve 35 is appropriately opened to keep the amount of the seal water 5 stored in the seal water supply tank 36 constant, and the rotating circle constituting the dewatering system 11 is maintained. When sealing the plate-type dynamics filter device 15 and the like, after the valve 39 and the like are opened, the seal water supply pump 38 is turned on, and the seal water 5 stored in the seal water supply tank 36 is rotated. It is supplied to the plate type dynamics filter device 15 and the like, and is sealed.

The filtered water treatment system 12 has a filtered water receiving tank 17 for temporarily storing the filtered water 9 when supplied, and a rotating disk type dynamics filter device 15.
A pipe 43 for collecting the filtered water 9 discharged from each filtered water discharge port 42 and leading the filtered water 9 to the filtered water receiving tank 17, and a rotary disk type dynamics filter device inserted in the middle of the pipe 43. 15 is a flow meter 44 for measuring the amount of filtered water 9 discharged from each filtered water outlet 42, and a portion of the pipe 43 connecting the flow meter 44 and each filtered water outlet 42. And a rotating disk type dynamics filter device 15
When the mixed sludge 8 is separated into the filtered water 9 and the concentrated sludge 10 by the
Among them, the mixed sludge 8 is inserted into a portion connecting the flow meter 44 and the filtered water receiving tank 17, and is separated into the filtered water 9 and the concentrated sludge 10 by the rotating disk type dynamics filter device 15. The valve 46 is opened when
When the filtered water 9 passing through the valve 46 is guided to a place other than the filtered water receiving tank 17, the valve 47 is opened and the pipe 43 is provided between the flow meter 44 and the valve 46. A pipe 48 for connecting a part of the filtered water 9 passing through the flow meter 44 to the sludge supply tank 16, and a mixed sludge 8 inserted in the middle of the pipe 48 and stored in the sludge supply tank 16. And a valve 49 that is opened when the concentration of is reduced.

Then, the mixed sludge 8 is filtered by the rotary disk type dynamics filter device 15 into the filtered water 9 and the concentrated sludge 1.
When it is separated to 0, the valves 45 and 46 are opened, and the filtered water 9 discharged from each filtered water discharge port 42 of the rotary disk type dynamics filter device 15 is collected. While the flow rate is being measured by 44, it is guided to the filtered water receiving tank 17 and stored. When the concentration of the mixed sludge 8 stored in the sludge supply tank 16 increases, the valve 49 is opened, and a part of the filtered water 9 that has passed through the flow meter 44 is returned to the sludge supply tank 16. Then, the concentration of the mixed sludge 8 stored in the sludge supply tank 16 is reduced to a specified value.

The washing water supply system 13 includes a pipe 50 for guiding the seal water 5 stored in the seal water supply tank 36 to the pipe 23 of the sludge supply system 3 as cleaning water, and a pipe 50 in the middle of the pipe 50. When the sludge supply pump 24 is inserted and washed, the two valves 51 and 52 that are opened and the pipe 23 are connected between the sludge supply pump 24 and the valve 28 and discharged from the sludge supply pump 24. A pipe 53 for guiding the washing wastewater to be supplied to the sludge supply tank 16;
3 and a valve 54 that is opened when cleaning the sludge supply pump 24,
7, a pipe 55 connecting the filtered water discharge port 42 of the rotary disk type dynamics filter device 15, a pipe 56 connecting the seal water supply tank 36 and the pipe 55, and a pipe 56 in the middle of the pipe 56. When the amount of the filtered water 9 stored in the filtered water receiving tank 17 is small, the filter water is opened and the sealing water 5 stored in the sealing water supply tank 36 is used as washing water, and the pipe 55 is used. And a washing water supply pump 58 that is inserted in the middle of the pipe 55 and is turned on when the rotating disk type dynamics filter device 15 is washed.

Further, the washing water supply system 13 is interposed between the washing water supply pump 58 and the filtered water receiving tank 17 in the pipe 55, and the filtration water stored in the filtered water receiving tank 17 is provided. When a part of the water 9 is used as the washing water, the washing water supply pump 58 and the rotating disk type dynamics filter device 15 of the pipe 55 and the pipe 59 are opened.
The three valves 60, 61, 6 which are inserted into the portions connecting the respective filtered water discharge ports 42 and are opened when the rotating disk type dynamics filter device 15 is washed.
2 and a pipe 63 connected between the valve 60 and the washing water supply pump 58 in the pipe 55 and returning a part of the filtered water 9 discharged from the washing water supply pump 58 to the filtered water receiving tank 17. A valve 64 inserted in the middle of the pipe 63 and opened when returning a part of the filtered water 9 discharged from the washing water supply pump 58 to the filtered water receiving tank 17;
Of the pipe 55, a pipe 65 connected between the valve 60 and the valve 61 and guiding the filtered water 9 discharged from the washing water supply pump 58 to the sludge supply tank 16, and a pipe 65 stored in the sludge supply tank 16. And a valve 66 that is opened when the concentration of the mixed sludge 8 is reduced.

In the washing water supply system 13, when the filtered water 9 is not stored in the filtered water receiving tank 17, the valve 57 is opened and the sealing water supply tank 3 is opened.
When the filtered water 9 is stored in the filtered water receiving tank 17, the valve 59 is opened. In the open state, the filtered water 9 stored in the filtered water receiving tank 17 is supplied as washing water to the inlet of the washing water supply pump 58, and in this state, the rotating disk type dynamics filter device 15 is supplied. When cleaning, each valve 6
After opening 0, 61 and 62, the washing water supply pump 5
8, the washing water supplied to the inlet of the washing water supply pump 58 is supplied to each filtered water discharge port 42 of the rotating disk type dynamics filter device 15, and the rotating disk type dynamic The inside of the filter device 15 is cleaned. When the concentration of the mixed sludge 8 stored in the sludge supply tank 16 is too high, the valve 6
After the cleaning water supply pump 58 is opened, the cleaning water supply pump 58 is turned on, and the cleaning water supplied to the inlet of the cleaning water supply pump 58 is supplied to the sludge supply tank 16. The concentration of the mixed sludge 8 stored in the tank is reduced to a specified value. When cleaning the sludge supply pump 24 of the sludge supply system 3 and the like, the valves 51, 52, 54
Then, the seal water stored in the seal water supply tank 36 is supplied to the sludge supply pump 24 as cleaning water, and is washed.

The washing wastewater treatment system 14 is provided with a concentrated sludge discharge port 67 of the rotating disk type dynamics filter device 15.
And a sludge supply tank 16 of the sludge supply system 3. The washing water is supplied to the rotating disk type dynamics filter device 15 by the washing water supply system 13 through the piping 68. When the inside of the rotating disk-type dynamics filter device 15 is being cleaned, the washing wastewater discharged from the concentrated sludge discharge port 67 of the rotating disk-type dynamics filter device 15 is opened when sludge is supplied. The cleaning water supply system 13 supplies cleaning water to the rotating disk-type dynamics filter device 15 to clean the inside of the rotating disk-type dynamics filter device 15. When the valve is in the open state, the washing wastewater discharged from the concentrated sludge outlet 67 of the rotary disk type dynamics filter device 15 is supplied to the sludge supply tank. Back to the 16.

The dewatering system 11 separates the mixed sludge 8 supplied from the sludge supply system 3 into filtered water 9 and concentrated sludge 10 while being sealed by the seal water 5 supplied from the seal water supply system 6. And a rotating disk type dynamics filter device 15 for discharging filtered water 9 and concentrated sludge 10 obtained from the filtered water outlet 42 and concentrated sludge outlet 67, respectively. When the dehydration process is performed by the disk-type dynamics filter device 15, it is turned on, and the rotating disk-type dynamics filter device 15 is turned on.
A motor 71 for rotating the main shaft 70 (see FIG. 2) and a concentrated sludge receiving tank 1 for temporarily storing the concentrated sludge 10
8, a pipe 72 for guiding the concentrated sludge 10 discharged from the concentrated sludge discharge port 67 of the rotary disk type dynamics filter device 15 to the concentrated sludge receiving tank 18, and a rotary disk inserted in the middle of the pipe 72, Sludge 10 discharged from the concentrated sludge discharge port 67 of the type dynamics filter device 15
Is introduced into the concentrated sludge receiving tank 18, the load amount of the rotating disk-type dynamics filter device 15 is obtained based on the valve 73 that is opened and the load current of the motor 71, and the preset load is set. When the load of the rotating disk-type dynamics filter device 15 is large compared to the amount, the amount of the concentrated sludge 10 stored in the rotating disk-type dynamics filter device 15 is set to a predetermined concentrated sludge that is set in advance. The concentrated sludge discharge valve control device 74 outputs a concentrated sludge discharge valve drive signal when it is determined that the amount has reached the amount. Each time the concentrated sludge discharge valve drive signal is output from the concentrated sludge discharge valve control device 74, the valve is activated. A concentrated sludge discharge valve driving device 75 for opening 73 is provided.

In the dewatering system 11, when the mixed sludge 8 is dewatered, the rotating disk-type dynamics filter device 15 is operated by the seal water 5 supplied from the seal water supply system 6.
With the motor 71 driven while sealing the inside,
The mixed sludge 8 supplied from the sludge supply system 3 is guided into the rotating disk type dynamics filter device 15, which is subjected to dehydration treatment, and the filtered water 9 obtained thereby is supplied to the filtered water treatment system 12. At the same time, the concentrated sludge 10 is stored in the concentrated sludge receiving tank 18. Further, when cleaning the inside of the rotating disk type dynamics filter device 15, the motor 71 is sealed while sealing the inside of the rotating disk type dynamics filter device 15 with the seal water 5 supplied from the seal water supply system 6. The washing water supplied from the washing water supply system 13 is guided to each filtered water discharge port 42 of the rotating disk type dynamics filter device 15 while the And the washing wastewater generated in this washing treatment is discharged from the concentrated sludge discharge port 67 and supplied to the washing wastewater treatment system 14.

In this case, as shown in FIG. 2, the rotary disk type dynamics filter device 15 is formed by closing the cylindrical body 76 and the start and end sides of the cylindrical body 76 by the disks 77 and 78, respectively. And a motor 71 disposed along the center line of the dehydrator housing 79.
Spindle 70 driven to rotate by the driving force obtained by
And a mixed sludge inlet 80 disposed at a predetermined interval in the dehydrator housing 79 and provided on the starting end side of the dehydrator housing 79.
The water contained in the concentrated sludge 8 taken in from the filter is filtered to produce filtered water 9, which is filtered at each filtered water outlet 42.
A plurality of filter plates 81 each of which is discharged from the filter plate, and a plurality of keys 8 are arranged between the respective filter plates 81, as shown in FIG.
2 to the main shaft 70 and the mixed sludge inlet 8
And a plurality of rotating plates 83 for stirring the concentrated sludge 8 taken in from zero.

Then, the seal water 5 is supplied from the seal water supply system 6.
Is supplied and the mixed sludge 8 is supplied from the sludge supply system 3 in a state where the main shaft 70 is rotationally driven by the motor 71, and this is supplied through the mixed sludge intake 80.
When the mixed sludge 8 is agitated by the rotating plates 83 fixed to the main shaft 70 while being guided into the dehydrator housing 79, the concentrated sludge moving path 84 formed in the central portion of each filtering plate 81. (See FIG. 3), the concentrated sludge is moved to the terminal side, and when the valve 73 is opened, the concentrated sludge 10 transferred to the terminal side and temporarily stored is discharged from the concentrated sludge outlet 67. At the same time, the water contained in the mixed sludge 8 is filtered out by the respective filtration plates 81 provided on the way, and is discharged from the respective filtered water discharge ports 42, respectively. 12 is supplied. Further, in a state where the supply of the mixed sludge 8 is stopped, washing water is supplied from the washing water supply system 13, and the washing water is led into the inside of each filtration plate 81 through each filtration water discharge port 42. When you are
The concentrated sludge 10 adhering to the respective filtration plates 81 is washed away, and the washing wastewater generated in the washing treatment is discharged to the terminal side through a concentrated sludge moving path 84 formed at the central portion of each filtration plate 81. Move and concentrate sludge outlet 6
7 and supplied to the cleaning wastewater treatment system 14.

As shown in FIG. 3, each filter plate 81 has a hole formed in the central portion thereof as a concentrated sludge moving path 84, and ring plates 85 arranged at predetermined intervals on the inner surface of a dehydrator housing 79. A seal ring 86 for sealing an outer edge portion of the ring plate 85; a ring-shaped filter support wire mesh 87 attached to each surface of the ring plate 85; Ring-shaped filter cloth 88, a ring-shaped filter cloth holding plate 89 for fixing the outer edge of each filter cloth 88 to the ring plate 85, and a ring-shaped filter cloth for fixing the inner edge of each filter cloth 88 to the ring plate 85. Of the mixed sludge intake port 80
When the mixed sludge 8 is guided to the inside of the dewatering device housing 79 via the filter and pressed against the surface of each filter cloth 88, the water contained in the mixed sludge 8 by each filter cloth 88 (filtering) The water is filtered out and guided to a filtered water transfer passage 91 formed in the ring plate 85 through a filter cloth support wire mesh 87 to be discharged from a corresponding filtered water discharge port 42. When the washing water is supplied through the filtered water discharge port 42, each filter cloth 88 is supplied through the filter support wire mesh 87.
Of the concentrated sludge 10 attached to the surface of each filter cloth 88 to be washed away.

<< Explanation of Operation of Embodiment >> Next, the operation of the sludge concentration system 1 will be described with reference to the processing system diagram shown in FIG. 1, the configuration diagram shown in FIG. 2, and the perspective view of the main part shown in FIG. The dehydration concentration preparation step, the dehydration concentration step, and the washing step will be described separately.

<Preparation Step for Dehydration and Concentration> First, the sludge supply system 3
The respective valves 20 and 21 are opened, and the sludge 2 to be treated is guided into the sludge supply tank 16, and
After the valve 33 of the sawdust supply system 4 is opened and the sawdust 7 is guided into the sludge supply tank 16, the stirrer 2
2 is turned on, the sludge 2 guided into the sludge supply tank 16 and the sawdust 7 are mixed, and mixed sludge 8 is generated.

In parallel with this operation, the valve 35 of the seal water supply system 6 is opened, and the seal water tank 36 is opened.
To the seal water tank 36
When a certain amount or more of the seal water 5 is stored, the valve 39 is opened, the seal water supply pump 38 is turned on, and the seal water supply pump 38 is provided in the rotating disk type dynamics filter device 15. The sealing water 5 is supplied to the respective filtration plates 81, and the respective filtration plates 81 are sealed.

Further, the motor 71 of the dehydrating system 11 is turned on, and the rotating disk type dynamics filter device 1 is turned on.
5 is brought into a dewaterable state, and the valves 26, 27, 28 of the sludge supply system 3 are opened to prepare the supply of the mixed sludge 8, and then each of the filtered water treatment systems 12 is prepared. The valves 45 and 46 are opened to prepare for receiving the filtered water 9 discharged from the rotary disk type dynamics filter device 15.

<Dewatering and Concentrating Step> Thereafter, the sludge supply pump 24 of the sludge supply system 3 is turned on, and the mixed sludge 8 stored in the sludge supply tank 16 is removed from the sludge supply tank 1.
6 → Valve 26 → Valve 27 → Sludge supply pump 24 → Valve 28 → Rotating disk type dynamics filter device 15
Rotary disk type dynamics filter device 1
5 and is guided into the rotating disk type dynamics filter device 15.

The mixed sludge 8 is pressed against the surface of each filter cloth 88 of each filter plate 81 while being agitated by each rotary plate 83 driven by the motor 71.
The water (filtration water 9) contained therein and the solid content (concentrated sludge 10) are separated, and the filtration water 9 obtained by this separation treatment is converted to a rotating disk type dynamics filter device 15 The filtered water is discharged from each filtered water outlet 42 and supplied to the flow meter 44 through a route of each filtered water outlet 42 → valve 45 → flow meter 44.
The liquid is guided to the filtered water receiving tank 17 through the route of 4 → valve 46 → filtered water receiving tank 17 and stored therein.

In parallel with this operation, the mixed sludge 8 (the concentrated sludge 1) whose water content has been reduced by the respective filtration plates 81
0) passes through the concentrated sludge transfer channel 84 of each filter plate 81,
The amount of the concentrated sludge 10 which is sequentially transferred to the terminal side of the dehydrating apparatus housing 79 and temporarily stored therein, and stored at the terminal side of the dehydrating apparatus housing 79 exceeds the specified amount and corresponds to this. When the load current of the motor 71 exceeds a preset load current, the concentrated sludge discharge valve control device 74
By this, it is determined that the amount of the concentrated sludge 10 stored in the dehydrating device housing 79 has reached the preset specified concentrated sludge amount, and the concentrated sludge discharge valve driving device 75 is turned on, The valve 73 is opened.

As a result, the concentrated sludge 10 stored on the terminal side in the dehydrating apparatus housing 79 is discharged from the concentrated sludge discharge port 67, and the path of the concentrated sludge discharge port 67 → the valve 73 → the concentrated sludge receiving tank 18 is formed. In the concentrated sludge receiving tank 1
It is led to 8 and stored.

The sludge 2 to be treated as described above is taken up, the sludge 2 taken in by the uptake process is mixed with the sawdust 7, the mixed sludge 8 obtained by the mixing process is dewatered, The filtration water 9 obtained by the dehydration treatment is continuously stored, and the concentrated sludge 10 obtained by the dehydration treatment is intermittently treated. 9 and the concentrated sludge 10 are stored in a filtered water receiving tank 17 and a concentrated sludge receiving tank 18, respectively.

<Washing Step> The preset time, such as when a predetermined time has elapsed since the start of the spin-drying process, or when the spin-drying type dynamics filter device 15 has a low spin-drying capacity, etc. When the cleaning start condition is satisfied, the sludge supply pump 24 of the sludge supply system 3 is turned off and the valves 26, 2
7 and 28 are closed, the supply of the mixed sludge 8 to the rotating disk type dynamics filter device 15 is stopped, and the valves 45 and 45 of the filtered water treatment system 12 are stopped.
46 is closed, and the treatment of the filtered water 9 is stopped.

Next, each valve 5 of the cleaning water supply system 13
After the valves 9, 60, 61, 62 are opened and the valve 69 of the cleaning wastewater treatment system 14 is opened, the cleaning water supply pump 58 is turned on, and A part of the filtered water 9 stored is filtered water receiving tank 17 → valve 59 → washing water supply pump 58 → valve 60 → valve 61 → valve 62 → each filtration of rotary disk type dynamics filter device 15. The water outlet port 42 is supplied to the inside of each filter plate 81 through the path of the filtered water moving flow path 91 of each filter plate 81, and the back surface of each filter cloth 88 provided in each filter plate 81. From the filter cloth 8
8 and the concentrated sludge 10 attached to the surface of the rotary disk-type dynamics filter device 15 is washed out.
7 and returned to the sludge supply tank 16 of the sludge supply system 3 through the route of the concentrated sludge discharge port 67 → the valve 69 → the sludge supply tank 16.

The cleaning water supply pump 58 is turned off when a predetermined period of time has elapsed since the start of the cleaning process, or when a predetermined cleaning end condition is satisfied. After the cleaning water supply system 1
The valves 59, 60, 61, and 62 of the third embodiment are closed, and the valve 69 of the cleaning and drainage treatment system 14 is closed, thereby completing the cleaning process of the rotary disk-type dynamics filter device 15 described above. I do.

Thereafter, the above-mentioned dewatering / concentrating step is restarted to take in the sludge 2 to be treated, to mix the sludge 2 taken in by this taking-in processing and the sawdust 7,
The dewatering process of the mixed sludge 8 obtained by the mixing process and the storing process of the filtered water 9 obtained by the dewatering process are continuously performed, and the process of the concentrated sludge 10 obtained by the dewatering process is intermittent. The sludge 2 to be treated is separated into filtered water 9 and concentrated sludge 10 and stored in a filtered water receiving tank 17 and a concentrated sludge receiving tank 18, respectively.

<< Explanation of the Example >> Next, the values when dewatering and concentration were performed without using sawdust 7 using sewage sludge of K City, Kanagawa Prefecture, and the dehydration and concentration using sawdust 7 were performed. The processing capacity of the above-described sludge concentration system 1 will be specifically described using numerical values obtained when the sludge concentration is performed.

<Common Settings> First, the sludge supply tank 16,
As the sawdust supply tank 31, the seal water supply tank 36, the concentrated sludge receiving tank 18, and the filtered water receiving tank 17,
The tank capacity shown below was placed, sludge feed tank ... 2m ³ sawdust feed tank ... 0.1 m ³ sealed water supply tank ... 2m ³ concentrated sludge receiving tank ... 0.1 m ³ filtered water receiving tank ... 2m ³ The sludge Pumps having the following discharge pressures were installed as the supply pump 24, the seal water supply pump 38, and the cleaning water supply pump 58.

Sludge supply pump: 4 kg / cm ² Sealing water supply pump: 4 kg / cm ² Washing water supply pump: 0.5 kg / cm ² Further, propylene fibers are knitted as filter cloth 88 constituting each filter plate 81. As a result, about "10"
A large number of pores having a pore diameter of a micrometer were formed, and the pores were adjusted so that the filtration area was "1.0 m ² ".

<Numerical value when sawdust 7 is not used> Sludge to be treated (sludge having a solid content of about 2%) 2
Is taken into the sludge supply tank 16, the seal supply pump 38 is turned on, and the seal water 5 is supplied to the rotating disk-type dynamics filter device 15.
Is supplied, and the motor 71 of the dehydrating system 11 is turned on while the sealing pressure is maintained at “6 kg / cm ² ”, and the main shaft 70 of the rotating disk type dynamics filter device 15 is rotated at a speed of “630 rpm”. While rotating, the valves 26, 27, 28 of the sludge supply system 3 and the filtered water treatment system 12
Each of the valves 45 and 46 was opened.

Next, the sludge supply pump 2 of the sludge supply system 3
4 is turned on, and a preset constant pressure “4K
g / cm ² ”, the sludge ² stored in the sludge supply tank 16 was guided to the rotating disk-type dynamics filter device 15 and subjected to dehydration treatment.

At this time, as shown in the graph A of FIG. 4 from each filtered water outlet 42 of the rotating disk type dynamics filter device 15, immediately after sludge supply, "1" per hour.
000 ”liters of discharge, and then the amount of discharge gradually decreases with the passage of time. From the start of sludge supply, approximately 300 to 120 minutes, approximately 300 liters per hour. The characteristic of the amount of discharge is that the filtered water 9 is discharged and stored in the filtered water receiving tank 17 and about 5 minutes after 20 minutes have passed since the supply of the sludge 2 was started. At minute intervals, the concentrated sludge discharge valve control device 74 of the dewatering system 11 is operated, the valve 73 is opened, and the concentrated sludge discharge port 67 of the rotary disk type dynamics filter device 15 is moved to the graph C in FIG. As shown,
Condensed sludge 10 having a water content of “60%” to “70%”
Was discharged and stored in the concentrated sludge receiving tank 18.

Then, after the supply of the sludge 2 is started,
After the elapse of “120 minutes”, the sludge 2 in the sludge supply tank 16 has run out, and the sludge supply pump 24 of the sludge supply system 3 is turned off.
8, the supply of the sludge 2 to the rotating disk type dynamics filter device 15 is stopped, and the valves 45 and 46 of the filtered water treatment system 12 are closed to set the filtered water 9 Has been stopped.

Thereafter, each valve 5 of the cleaning water supply system 13
9, 60, 61, and 62 are opened, and the valve 69 of the washing and drainage treatment system 14 is opened. Then, the washing water supply pump 58 is turned on and the filtered water receiving tank 17 is opened.
A part of the filtered water 9 stored in each filter plate 81 of the rotating disk type dynamics filter device 15
The condensed sludge 10 adhering to the surface of each filter cloth 88 is washed away, and the washing wastewater generated by this washing treatment is discharged from the condensed sludge discharge port 67 of the rotary disk type dynamics filter device 15 to supply sludge. The system 3 was returned to the sludge supply tank 16.

<Numerical value when sawdust 7 is used> Next, in order to examine the processing ability when sawdust 7 is used, the dispersibility to sludge 2 of the sawdust obtained by pulverizing softwood, hardwood, etc. Taking into account the degree of clogging of the filter, a filter having a particle size of 0.5 mm to 2.0 mm was prepared and stored in the sawdust supply tank 31.

Then, the sludge to be treated (sludge having a solid content of about 2%) 2 is taken in by 2t and filled into the sludge supply tank 16, and then the valve 3 of the sawdust supply system 4 is filled.
3 is opened, the stirrer 22 is operated while the sawdust 7 is supplied from the sawdust supply tank 31 to the sludge supply tank 16 by “4 kg”, and the sludge 2 and the sawdust 7 are mixed. It was 8.

Thereafter, the sealing pressure of the rotating disk type dynamics filter device 15 is maintained at “6 kg / cm ² ”.
While rotating the main shaft 70 of the rotating disk type dynamics filter device 15 at a speed of “630 rpm” by the motor of the dewatering system 11, each valve 26 of the sludge supply system 3
The valves 27 and 28 and the valves 45 and 46 of the filtered water treatment system 12 were opened.

Next, the sludge supply pump 2 of the sludge supply system 3
4 is turned on, and a preset constant pressure “4K
g / cm ² ", and the mixed sludge 8 stored in the sludge supply tank 16 is passed through the rotating disk type dynamics filter device 1.
5 and dehydrated.

At this time, as shown in the graph B of FIG. 4, from the filtered water discharge port 42 of the rotating disk type dynamics filter device 15, immediately after the sludge supply, "1" per hour.
The discharge amount was 350 "liters. Thereafter, the discharge amount gradually decreased with the passage of time, and after the sludge supply was started," 450 "liters per hour in about 90 to 120 minutes was almost balanced. Filtered water 9 is discharged and stored in a filtered water receiving tank 17 and about 20 minutes after the start of the supply of the mixed sludge 8, the characteristic is a discharge amount. At 5 minute intervals, the concentrated sludge discharge valve control device 74 of the dewatering system 11 is operated to open the valve 73, and the rotating disk type dynamics filter device 15 is opened.
As shown in the graph D of FIG. 5, the concentrated sludge 10 having a water content of about “60%” was discharged from the concentrated sludge discharge port 67 and stored in the concentrated sludge receiving tank 18.

Then, when "120 minutes" have elapsed since the supply of the mixed sludge 8 was started, the sludge supply tank 1
Since the mixed sludge 8 in 6 has disappeared, the sludge supply pump 24 of the sludge supply system 3 is turned off.
27 and 28 are closed, the supply of the mixed sludge 8 to the rotating disk type dynamics filter device 15 is stopped, and the valves 45, 4 of the filtered water treatment system 12 are stopped.
6 was closed, and the treatment of filtered water 9 was stopped.

Thereafter, each valve 5 of the cleaning water supply system 13
9, 60, 61, and 62 are opened, and the valve 69 of the washing and drainage treatment system 14 is opened. Then, the washing water supply pump 58 is turned on and the filtered water receiving tank 17 is opened.
A part of the filtered water 9 stored in the filter disk 18 is introduced into each filter plate 18 of the rotating disk type dynamics filter device 15,
The condensed sludge 10 adhering to the surface of each filter cloth 88 is washed away, and the washing wastewater generated by this washing treatment is discharged from the condensed sludge discharge port 67 of the rotary disk type dynamics filter device 15 to supply sludge. The system 3 was returned to the sludge supply tank 16.

<Effect of Using Sawdust 7> As can be seen from these graphs A and B of FIG. 4, the rotating disk type dynamics filter is used without mixing the sawdust 7 into the sludge 2 to be treated. Even when the device 15 was subjected to a dehydration treatment, a sufficient dehydration ability could be exhibited.

Further, as can be seen by comparing these graphs A and B in FIG. 4, when the sludge 2 to be treated is mixed with the sawdust 7 and is subjected to dehydration treatment by the rotating disk type dynamics filter device 15, Compared with the case where the sawdust 7 is not mixed, the flow rate of the filtered water 9 discharged from the rotating disk type dynamics filter device 15 can be almost doubled, and the flow rate when the equilibrium point is reached can be reduced. It can be increased by about 1.6 times, and the graph C in FIG.
As is clear from the comparison of D, the water content of the concentrated sludge 10 discharged from the rotating disk type dynamics filter device 15 could be reduced.

<< Effects of Embodiment >> As described above, in this embodiment, while the rotating disk-type dynamics filter device 15 of the dehydrating system 11 is sealed by the seal water supply system 6, the sawdust supply system 4 Supply the sawdust 7 to the sludge supply tank 16 of the sludge supply system 3,
And the mixed sludge 8 is supplied to the rotating disk-type dynamics filter device 15 so that the mixed sludge 8 is
The filtered water 9 and the concentrated sludge 10 are separated, and the filtered water 9 obtained by this separation treatment is stored in the filtered water receiving tank 17 of the filtration water treatment system 12, and the concentrated water obtained by the separation treatment is separated. Since the sludge 10 is stored in the concentrated sludge receiving tank 18, the sewage and wastewater are dehydrated without adding an organic coagulant or an inorganic coagulant to the sewage or wastewater. In addition to being able to be separated into the filtered water 9 and the concentrated sludge 10, even if the concentrated sludge 10 is disposed of in a landfill or used for compost, environmental problems can be prevented. (Claim 1
Effect).

In this embodiment, each filter plate 81
As a filter cloth 88, a propylene fiber is knitted so that a large number of pores having a pore diameter of about "10" micrometer are formed on the front and rear surfaces, and the filtration area is "1.0 m ² ". Since the filter cloth provided with the filter is used, only the water contained in the mixed sludge 8 is permeated while reducing the number of clogging of the filter, and the filtered water 9 is used.
Can be generated, thereby, without adding an organic coagulant or an inorganic coagulant to sewage or wastewater, and reducing the number of times the filter is washed,
These sewage and wastewater can be efficiently dewatered (effect of claim 2).

In this embodiment, the sludge supply system 3
Since the sludge 2 and the sawdust 7 are mixed in the sludge supply tank 16 to make the mixed sludge 8, the mixed sludge 8 is guided to the rotating disk-type dynamics filter device 15 for dewatering. The dewatering treatment of the mixed sludge 8 can be continuously performed only by periodically cleaning the rotating disk type dynamics filter device 15, whereby the organic flocculant or the inorganic flocculant is added to the sewage or wastewater. These sewage and wastewater can be efficiently dewatered at a sufficient filtration rate without adding a coagulant or the like.
Effect).

In this embodiment, the sawdust 7 is 0.5 mm in consideration of the dispersibility with respect to the sludge 2 and the degree of clogging of the filter among the sawdust obtained by pulverizing softwood, hardwood and the like. Since the one having a particle diameter of about 2.0 mm is used, the uniformity and fluidity of the mixed sludge 8 discharged from the sludge supply tank 16 are ensured, and the rotating disk type dynamics filter device 15 is used. Continuous feeding of the mixed sludge 8 to the rotating disk type dynamics filter device 15 can be facilitated.
The number of clogging of each filter plate 81 provided therein can be reduced, and the sludge 2 can be efficiently dewatered (effect of claim 5).

<< Other Embodiments >> In the above-described embodiment, as each filter cloth 88 of each filter plate 81, a filter cloth made by knitting propylene fiber is used. Instead of such a filter cloth, a filter having a similar function, for example, a filter made of an inorganic material such as ceramic, a filter made of a metal net, or the like may be used.

In this manner, as in the above-described embodiment, only the water contained in the mixed sludge 8 is permeated while reducing the number of times of clogging of the filter, and the filtered water 9 is generated. This makes it possible to efficiently dewater these sewage and wastewater without adding an organic coagulant or an inorganic coagulant to the sewage or wastewater and reducing the number of times the filter is washed. (The effect of claim 2).

In the above-described embodiment, the sludge 2 and the sawdust 7 are mixed into the mixed sludge 8 in the sludge supply tank 16, and the mixed sludge 8 is supplied to the rotating disk type dynamics filter device 15. Although the dewatering process is performed, the surface of each filter cloth 88 provided in the rotating disk-type dynamics filter device 15 or the like has a sawdust 7
May be coated in advance, and only the sludge 2 is supplied from the sludge supply tank 16 to the rotating disk type dynamics filter device 15.

By doing so, clogging of the pipe 23 connecting the sludge supply tank 16 and the rotating disk type dynamics filter device 15 and the sludge supply pump 24 inserted in the pipe 23 is eliminated. Therefore, while eliminating the need for such washing, without adding an organic coagulant or an inorganic coagulant to sewage or wastewater,
In addition, these sewage and wastewater can be efficiently dewatered and separated into filtered water 9 and concentrated sludge 10 without previously mixing sawdust in the sludge 2.
Even if the concentrated sludge is disposed of in landfill or used for composting, environmental problems are prevented from occurring (effect of claim 4).

In the above embodiment, sawdust 7 having a particle size of 0.5 mm to 2.0 mm is used, but a sawdust having a particle size of 0.1 mm to 2.0 mm is used. Is also good.

Even in this case, the uniformity and fluidity of the mixed sludge 8 discharged from the sludge supply tank 16 are ensured,
The continuous supply of the mixed sludge 8 to the rotating disk type dynamics filter device 15 can be facilitated, and the number of clogging of each filter plate 81 provided in the rotating disk type dynamics filter device 15 can be reduced. By reducing the amount, the sludge 2 can be efficiently dewatered (effect of claim 5).

[0077]

As described above, according to the present invention, in the sludge concentration system according to the first aspect, an organic flocculant or an inorganic flocculant is added to sewage or wastewater without adding any of them. Sewage and wastewater can be dewatered and separated into filtered water and concentrated sludge, and the concentrated sludge can be landfilled or used for composting.
Environmental problems can be avoided.

In the sludge concentration system according to the second aspect, the sewage and wastewater are not added to the sewage and wastewater without adding an organic coagulant or an inorganic coagulant and reducing the number of times of washing the filter. Dewatering efficiently
It can be separated into filtered water and concentrated sludge,
Even if the concentrated sludge is disposed of in landfill or used for compost, environmental problems can be prevented from occurring.

In the sludge concentration system according to the third aspect, the sewage and wastewater can be efficiently filtered at a sufficient filtration rate without adding an organic coagulant or an inorganic coagulant to the sewage or wastewater. It can be separated into filtered water and concentrated sludge by dewatering well, and it should not cause environmental problems even if the concentrated sludge is disposed of in landfill or used for composting. Can be.

In the sludge concentration system according to the fourth aspect, without adding an organic coagulant or an inorganic coagulant to sewage or wastewater, and without previously mixing sawdust in the sludge, These sewage and wastewater can be efficiently dewatered and separated into filtered water and concentrated sludge.Even if the concentrated sludge is landfilled or used for composting, environmental problems occur. It can be prevented from occurring.

In the sludge concentrating system according to the fifth aspect, without adding an organic coagulant or an inorganic coagulant to sewage or wastewater, the sawdust is uniformly dispersed in the sludge, and the sludge is filtered. While preventing clogging, these sewage and wastewater can be efficiently dewatered and separated into filtered water and concentrated sludge. Also, it is possible to prevent environmental problems from occurring.

[Brief description of the drawings]

FIG. 1 is a processing system diagram showing an embodiment of a sludge concentration system according to the present invention.

FIG. 2 is a configuration diagram showing a detailed configuration example of the rotating disk type dynamics filter device shown in FIG. 1;

FIG. 3 is a perspective view of a main part showing a detailed configuration example of a filtration plate and a rotary plate shown in FIG. 2;

FIG. 4 is a graph showing specific numerical examples obtained when sludge is treated by the sludge concentration system shown in FIG.

FIG. 5 is a graph showing specific numerical examples obtained when sludge is treated by the sludge concentration system shown in FIG. 1;

[Explanation of symbols]

1: sludge concentration system, 2: sludge, 3: sludge supply system,
4: sawdust supply system, 5: seal water, 6: seal water supply system, 7: sawdust, 8: mixed sludge, 9: filtered water, 10:
Condensed sludge, 11: dehydration system, 12: filtered water treatment system, 13:
Washing water supply system, 14: washing wastewater treatment system, 15: rotating disk type dynamics filter device, 16: sludge supply tank, 17: filtered water receiving tank, 18: concentrated sludge receiving tank, 19: piping, 20: Valve, 21: Valve, 22:
Stirrer, 23: piping, 24: sludge supply pump, 25: pressure gauge, 26: valve, 27: valve, 28: valve, 2
9: piping, 30: valve, 31: sawdust supply tank,
32: pipe, 33: valve, 34: pipe, 35: valve, 36: seal water supply tank, 37: pipe, 38: seal water supply pump, 39: valve, 40: pipe, 41:
Valve, 42: filtered water outlet, 43: piping, 44: flow meter, 45: valve, 46: valve, 47: valve, 4
8: piping, 49: valve, 50: piping, 51: valve,
52: valve, 53: pipe, 54: valve, 55: pipe, 56: pipe, 57: valve, 58: washing water supply pump, 59: valve, 60: valve, 61: valve, 6
2: valve, 63: piping, 64: valve, 65: piping,
66: valve, 67: concentrated sludge outlet, 68: piping, 6
9: Valve, 70: Main shaft, 71: Motor, 72: Piping,
73: valve, 74: concentrated sludge discharge valve control device, 75:
Thickened sludge discharge valve drive, 76: cylinder, 77: disk, 7
8: disk, 79: dehydrator housing, 80: mixed sludge intake, 81: filter plate, 82: key, 83: rotary plate, 84:
Concentrated sludge moving path, 85: ring plate, 86: seal ring, 87: filter cloth support wire mesh, 88: filter cloth, 89: filter cloth press plate, 90: filter cloth press plate

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 39/20 B01D 29/34 510C F-term (Reference) 4D019 AA03 BA02 BA05 BA13 BB02 BD01 CA05 CB09 4D059 AA03 BE07 BE21 BE62 BJ01 CB17 DB33 EA20 EB20 4D066 BA05 BB22 CA11 CA14 CB11 CB13 DA02

Claims (5)

[Claims] 1. A sludge concentration system for removing water from a solid content contained in sludge to be treated and separating it into filtered water and concentrated sludge, wherein the solid contained in the sludge to be treated is removed. A sludge concentration system comprising a rotating disk type dynamics filter device as a dehydration device for separating water and water. 2. The sludge concentrating system according to claim 1, wherein the filtration filter provided in the rotating disk type dynamics filter device has a pore size of 0.5 μm or more, ceramic, and ceramic. A sludge concentration system, using either a ceramic filter made of a material or a metal mesh filter made of a metal mesh. 3. The sludge concentration system according to claim 1, wherein sawdust is added to the sludge supplied to the rotating disk type dynamics filter device. Concentration system. 4. The sludge concentrating system according to claim 1, wherein the rotating disk-type dynamics filter device is subjected to a dehydration process before the rotating disk-type dynamics filter device performs a dehydration process. A sludge concentration system, wherein sawdust is applied to a filtration filter provided in advance. 5. The sludge concentration system according to claim 3, wherein the sawdust has a particle size of “0.1 mm” to “2 mm” obtained by pulverizing hardwood or softwood. A sludge concentration system, wherein the sludge concentration system is selected and used.