KR101645383B1 - Apparatus for reducing sludge - Google Patents

Apparatus for reducing sludge Download PDF

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Publication number
KR101645383B1
KR101645383B1 KR1020150140276A KR20150140276A KR101645383B1 KR 101645383 B1 KR101645383 B1 KR 101645383B1 KR 1020150140276 A KR1020150140276 A KR 1020150140276A KR 20150140276 A KR20150140276 A KR 20150140276A KR 101645383 B1 KR101645383 B1 KR 101645383B1
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KR
South Korea
Prior art keywords
sludge
magnetic force
space
force applying
magnetic
Prior art date
Application number
KR1020150140276A
Other languages
Korean (ko)
Inventor
전양근
김미경
신봉순
김대중
윤성동
한정윤
이기철
김지용
Original Assignee
코오롱워터앤에너지 주식회사
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Priority to KR1020150140276A priority Critical patent/KR101645383B1/en
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Publication of KR101645383B1 publication Critical patent/KR101645383B1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • B01F7/16—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • B01F2215/0052—
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/06—Sludge reduction, e.g. by lysis

Abstract

The present invention relates to an apparatus for reducing a sludge having a multi-layer structure, comprising: a treating tank in which a sludge is introduced; a rotational shaft which has rotational force by a driving motor and is placed inside the treating tank; a plurality of magnetic applying units which is integrally and rotatably communicated with the rotational shaft, has at least one magnet and respectively forms gaps to a hitting space on a lower portion; and a plurality of magnetic hitting particles which is placed on the hitting space and has magnetism.

Description

[0001] APPARATUS FOR REDUCING SLUDGE [0002]

Disclosed herein is a sludge capable of reducing sludge disposal throughput by significantly reducing the amount of sludge generated in a biological treatment process of wastewater and the like through a blow by a magnetic force in a plurality of striking spaces and returning the sludge to a state suitable for biological treatment To a weight loss device.

Generally, various processes are applied to the treatment of wastewater under organic conditions, for example, an active sludge treatment method is proposed. This activated sludge treatment method is a method of decomposing and treating an organic matter in the water to be treated by a biological action of an activated sludge. In this activated sludge treatment method, a large amount of microorganisms, which have grown in the process of biological decomposition treatment of organic matter, occur as sludge. The sludge generated in such a large amount is separated and recovered by a settling tank and a part of the sludge is returned to the biological treatment process, but in addition, the part is disposed as surplus sludge. As a disposal method of surplus sludge, a method of concentrating excess sludge, dehydrating it, and disposing it according to incineration or landfill is mainly used. On the other hand, it is difficult to secure landfill repositories for industrial waste in landfill disposal, and the amount of such surplus sludge is increasing year by year, and the treatment cost is increasing year by year. In the case of disposal by incineration, the water content of the excess sludge is high, so the fuel cost for incinerating the excess sludge becomes large, resulting in energy and environmental problems. In other words, besides disposal, disposal of surplus sludge is required.

For example, Korean Patent Registration No. 10-393284 discloses a process for completely decomposing organic matters in a short period of time by introducing high-temperature steam as a pretreatment thermal decomposition tank and fusing with an added alkali agent. It suggests a chemical treatment method that can reduce the time required for decomposition, input energy, and reduce necessary site.

However, according to the above-mentioned technology, there is a problem in that it is not environmentally friendly due to chemical treatment, and energy is excessively consumed due to the use of high-temperature steam steam, and there is a problem that it is difficult to expect a sufficient amount of sludge reduction by such a technique.

Korean Patent Registration No. 10-393284

The present invention has been made to solve the problems of the prior art as described above, and it is an object of the present invention to provide a weight reducing device capable of reducing energy and sludge grinding efficiency by a physical method, to be.

According to an aspect of the present invention, there is provided a sludge reduction apparatus comprising: a treatment tank into which sludge is introduced; A rotating shaft which is placed in the processing tank and is subjected to a rotational force by a driving motor; A plurality of magnetic force applying units that rotate integrally with the rotation shaft and are equipped with one or more magnets and form a clearance to form a batting space at a lower portion; And a plurality of magnetic impact particles disposed in the striking space and having magnetic properties.

In one example, the inner diameter of the treatment tank is larger than the diameter of the magnetic force applying unit, so that an upward flow path is formed between the inner periphery of the treatment tank and the outer periphery of the magnetic force applying unit, and the sludge struck in the hitting space, To the striking space located at the upper portion or to the trapping space at the uppermost portion of the magnetic force applying portion.

As one example, the upward flow path is formed with a cutter end protruding in a plurality of inner diameters of the processing tank and having an upward slope in the same direction in the direction of rotation of the magnetic force applying unit.

As one example, a plurality of centrifugal vortical induction stages are provided so as to induce a vortex in a centrifugal direction at a central portion on the bottom surface of the magnetic force applying portion.

As one example, the magnetic impact particles are characterized in that at least two particles having different weights are mixed.

As one example, an inflow line through which sludge is introduced is formed in the lowermost striking space of the processing tank, and a discharge space in which the treated sludge is discharged is formed in the striking space located in the upper part of the lowermost striking space, And is connected to the stirring tank.

As one example, the stirring tank is formed with a conveyance line for conveying sludge to the treatment tank to be connected to the inflow line, and the conveyance to the conveyance line is controlled by a control unit. In the stirring tank, And a receiver for receiving the light projected from the transmitter, and the controller analyzes the light projected by the transmitter and the light received by the receiver to control the conveying line.

As described above, the multi-layered sludge weight reduction apparatus according to the present invention has the advantage of doubling the efficiency of weight reduction by sludge grinding by allowing sludge striking of magnetic impact particles in a plurality of striking spaces.

In addition, the multi-layered sludge weight reducing apparatus according to the present invention is advantageous in that an effective post-treatment can be carried out by reducing and conveying the sludge in a state where the biological treatment is appropriately carried in a bioreactor or the like as the incoming sludge is uniformly pulverized.

1 is a schematic view showing a basic example of the present invention,
2 is a side sectional view showing an operating state of the treatment tank and the like of the present invention,
Fig. 3 is a schematic view showing an embodiment of a treatment group which is an embodiment of the present invention,
4 is a rear view showing an embodiment of a magnetic force applying unit which is a constitution of the present invention,
FIG. 5 is a schematic view showing one embodiment of magnetic impact particles as an embodiment of the present invention,
6 is an operational state diagram showing an embodiment of a stirring tank which is a constitution of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a sludge weight loss apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the sludge weight reduction apparatus 100 according to the present invention includes a treatment tank 130 into which sludge is introduced into the treatment tank 130; A rotating shaft 110 having a rotational force applied by a driving motor m and positioned inside the processing tank 130; A plurality of magnetic force applying units 120 rotating integrally with the rotating shaft 110 and having at least one magnet mounted thereon and forming a clearance and forming a striking space 133 at a lower portion; And a plurality of magnetic impact particles 140 disposed under the processing tank 130 and having magnetic properties.

That is, in the sludge weight reduction apparatus 100 of the present invention, the magnetic impact particles 140, which are linked to each other by the magnetic force of the magnetic force applying unit 120 in the plurality of the impact spaces 133, Thereby pulverizing the sludge to reduce the volume.

The reason why the sludge is pulverized and reduced in weight is to reduce the amount of sludge to be disposed of from the excess sludge that has been introduced so as to reduce or eliminate the facilities and energy required for disposal, and at the same time, the sludge is returned to the bioreactor The sludge is also intended to be solubilized and returned to a state suitable for biological treatment. Here, solubilization refers to modifying the sludge to a state suitable for biologically treating the sludge, which means pulverizing the microorganisms constituting most of the sludge.

First, the sludge weight loss device 100 shown in FIG. 1 will be described.

The magnetic force applying unit 120 may be configured in various shapes. For example, a disk-shaped plate 121 (not shown in the drawing) may rotate integrally with the rotation shaft 110, One or more magnets 122 are attached to the plate body 121.

Particularly, in the present invention, the magnetic force applying unit 120 is mounted on the rotary shaft 110 so that a striking space 133 is formed at a lower portion thereof. 1 shows an example in which two magnetic force applying portions 120 are formed on the rotary shaft 110 and the sludge is struck by the magnetic striking particles 140 in the upper and lower striking spaces 133 have.

In this way, the magnetic strike particles 140 are interlocked with each other by the rotation of the upper magnetic force applying unit 120 in the lowermost striking space 133, and strike the introduced sludge. Thus, The upper striking space 133 is exposed to the striking of the magnetic striking particles 140. The upper striking space 133 is affected by the upper and lower magnetic force applying units 120, The magnetic striking particles 140 are exposed to a larger magnetic force than the space 133.

That is, the sludge in the upper striking space 133 is exposed to a blow of the magnetic striking particles 140 larger than that in the striking space 133 in the lower part to increase the sludge grinding efficiency. Thus, .

2, the inner diameter of the treatment tank 130 may be larger than the diameter of the magnetic force applying unit 120 so that the inner circumference of the treatment tank 130 and the outer circumference of the magnetic force applying unit 120 The upward flow path 135 is formed and the sludge struck in the striking space 133 located at the lower part is separated from the striking space 133 or the uppermost part of the magnetic force applying part 120, To the trapping space (134)

The sludge introduced into the working space 133 receives centrifugal force simultaneously with the blowing of the magnetic impact particles 140 by the rotation of the upper magnetic force applying unit 120. When the centrifugal force is applied to the sludge, And flows into the upper striking space 133 through the upward flow path 135.

The magnetic impact particles 140 are made of a magnetic material so that the magnetic force applying unit 120 generates rotation interlocking motion by the magnet 121 of the magnetic force applying unit 120. By this rotation interlocking The sludge in the treatment tank 130 is hit. The magnetic impact particles 140 may be made of various materials as long as they are made of magnetic material. For example, steel slag balls may be used.

Steel slag balls are used as abrasive materials as well as magnetic materials and have excellent strength so that they can be maintained without being broken by impact or impact.

1, an inflow line 131 through which the sludge flows is formed in the lowermost hitting space 133 of the treatment tank 130 and a hitting space 133 located at the upper portion of the lowermost hitting space 133 is formed. And the collection space 134 are respectively formed with a discharge line 132 through which the processed sludge is discharged and the discharge line 132 is connected to the stirring tank 150. Although no reference numerals are shown in the stirring tank 150, the stirring means is configured to further stir the sludge that has been reduced in weight by the batting in the treatment tank 130 and discharge it to the outside. Alternatively, as described below, 151 to the treatment tank 130. [

In the present invention, one embodiment for further increasing sludge grinding efficiency is shown in Fig. In this embodiment, a plurality of cutter ends 136 protruding from the inner diameter of the processing tank 130 and having an upward slope in the direction of rotation of the magnetic force applying unit 120 are formed in the upward flow path 135 .

A plurality of cutter ends 136 are protruded along the inner diameter of the processing tank 130 at the position of the upward flow path 135 and each of the cutter ends 136 has an upward slope in the rotational direction of the magnetic force applying part 120 Is formed. 3, the sludge, which is subjected to the centrifugal force by the rotation of the magnetic force applying unit 120, passes through the upward flow path 135 and collides with the respective cutter ends 136, The sludge that flows into the upper striking space 133 is pulverized by the cutter end 136 in addition to the pulverization by the impact of the magnetic striking particles 140, thereby further increasing the sludge pulverizing efficiency.

Particularly, the reason why the cutter end 136 is further formed in the upward flow path 135 is that the sludge pulverized by the blow in the hitting space 133 flows through the upward hitting space 133 through the upward flow path 135 having a relatively narrow width, The pulverized sludge may be recombined to lower the pulverization efficiency in the lower impact space 133. The cutter end 136 may be further formed in the upward flow path 135 so as to be pulverized And the recombination is controlled in the upward flow path 135 of the sludge.

As described above, the sludge in the striking space 133 is subjected to centrifugal force by the rotation of the magnetic force applying unit 120. Naturally, the magnetic striking particles 140 are also subjected to centrifugal force, The impact particles 140 are concentrated in the circumferential direction in the treatment tank 130, so that the sludge strike efficiency of the rotary shaft 110 may be lowered. That is, there may be a problem that the sludge pulverizing efficiency is uniformly lowered in the hitting space 133. Therefore, in the present invention, embodiments for achieving uniform sludge grinding efficiency are shown in FIGS. 4 and 5. FIG.

In the embodiment shown in FIG. 4, a plurality of centrifugal vortical induction stages 123 are provided so as to project a centrifugal vortex in a centrifugal direction at a central portion of the lower side of the magnetic force applying unit 120. In other words, as shown in the drawing, the centrifugal vortical induction end 123 protrudes at a central portion of the lower surface of the magnetic force application unit 120, and one end thereof starts from the periphery of the rotation axis 110 and rotates in the rotation direction of the magnetic force application unit 120 The other end is formed so that the outer periphery and the clearance of the magnetic force applying part 120 are formed while forming the inclined gradient and the vortex is induced in the centrifugal direction by the centrifugal vortical induction end 123 at the central part of the rotation of the magnetic force applying part 120, .

In the drawing, a clockwise vortex W1 is formed as the magnetic force applying unit 120 rotates in a clockwise direction, and a counter-clockwise direction is formed at a position where the centrifugal vortical induction end 123 is formed, And a vortex W2 directed toward the centrifuge is formed. With this configuration, the magnetic impact particles 140 interlocked with the vortex are basically subjected to a centrifugal force and are forced to move outward from the impact space 133, but at the center thereof, the centrifugal vortical induction end 123 rotates in the centrifugal direction The vortex W2 is formed and the magnetic impact particles 140 are interlocked with the vortex W2 at the central portion of the impact space 133 to uniformly interlock the magnetic impact particles 140 in the entire impact space 133 So that uniform sludge pulverization can be achieved.

The embodiment shown in Fig. 5 shows an example in which two or more particles at least different in weight are mixed in constituting the magnetic impact particles 140. That is, two or more magnetic impact particles 140 having different weights are disposed in the impact space 133 so that the magnetic impact particles 140 having a relatively small weight are affected by the centrifugal force due to the rotation of the magnetic force applying unit 120 And the magnetic impact particles 140 having a relatively large weight are less affected by the centrifugal force due to the rotation of the magnetic force applying unit 120 and are moved inward or in the middle of the impact space 133 To be linked.

As shown in FIG. 5, the magnetic impact particles 140 having a relatively large weight g2 are interlocked at the center. The magnetic impact particles 140 having a relatively small weight g1 are disposed outside the impact space 133 So that the magnetic striking particles 140 can be interlocked uniformly throughout the striking space 133.

On the other hand, when the solubilization is sufficiently performed, the sludge introduced into the agitating tank 150 is allowed to flow out to the outside. When the solubilization is not sufficiently performed, the sludge introduced into the treatment tank 150 130) so that the grinding process is further performed. However, it is troublesome for the manager to periodically judge whether or not the sludge introduced from the agitating tank 150 is solubilized empirically.

In the present invention, as shown in FIG. 6, the structure of the stirrer 150, which can easily determine the degree of solubilization of the sludge, is further proposed.

The conveying line 151 for conveying the sludge to the treatment tank 130 is formed to be connected to the inflow line 131 and the conveyance to the conveyance line 151 is performed The stirring unit 150 is controlled by the control unit 160. The stirring unit 150 includes a transmitting unit 152 for projecting light to one side and a receiving unit 153 for receiving the light projected from the transmitting unit 152, The control unit 160 analyzes the light projected by the light receiving unit 152 and the light received by the receiving unit 153 to control the conveying line 151.

The transmitter 152 is disposed on one side of the stirring tank 150 to project light to the other side of the stirring tank 150. Some of the projected light is reflected and scattered by the sludge contained in the raw water, and the reflected and scattered light is received by the receiver 153.

That is, as the amount of sludge contained in the raw water increases, the amount of light received by the receiving unit 153 decreases. The control unit 160 compares the amount of light received by the receiving unit 153 with the predetermined amount of light, and when the amount of light received by the receiving unit 153 is smaller than the preset amount of light (the degree of solubilization of the predetermined sludge is The control unit 160 controls the return line 151 to return the sludge of the stirring tank 150 to the treatment tank 130. [

Here, the control unit 160 controls the return line 151 to prevent the sludge in the stirring tank 150 from flowing into the treatment tank 130 through the return line 151, It is. When the amount of light received is larger than the preset amount of light (when the solubilization degree of the predetermined sludge is satisfied), the sludge treated outside of the stirring tank 150 is discharged.

The predetermined amount of light is defined as the amount of light received by the receiving unit 153 when the sludge is sufficiently pulverized and solubilized at a certain level of the stirring tank 150 through an experiment and the criterion can be selected by various variables Of course.

While the present invention has been described with reference to the particular embodiments and drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Various modifications and changes may be made.

100: Device 110 of the present invention:
120: magnetic force application unit 130: treating tank
140: magnetic impact particles 150: stirring tank
160:

Claims (7)

A treatment tank into which sludge flows into the inside;
A rotating shaft which is placed in the processing tank and is subjected to a rotational force by a driving motor;
A plurality of magnetic force applying units that rotate integrally with the rotation shaft and are equipped with one or more magnets and form a clearance to form a batting space at a lower portion;
A plurality of magnetic striking particles disposed in the striking space and magnetized;
An inner diameter of the treatment tank is larger than a diameter of the magnetic force applying unit, an upward flow path is formed between the inner periphery of the treatment tank and the outer periphery of the magnetic force applying unit, and the sludge struck in the hitting space located at the bottom, And flows into the trapping space located above the uppermost magnetic force applying portion,
A plurality of protrusions protruding from the inner diameter of the processing tank and having an upward slope in the rotational direction of the magnetic force applying unit are formed in the upward flow path,
Wherein the magnetic impact particles are mixed with at least two steel-making slag balls at least different in weight.
delete delete The method according to claim 1,
Wherein a plurality of centrifugal vortex inducing ends are provided to project a vortex in a centrifugal direction at a central portion of the bottom surface of the magnetic force applying portion.
delete The method according to claim 1,
And a discharge line for discharging the treated sludge is formed in the batting space and the collecting space located above the lowermost hitting space, respectively, and the discharge line is connected to the stirring tank Wherein the sludge weight reduction device is a multi-layer structure sludge weight reduction device.
The method according to claim 6,
Wherein the stirring tank is provided with a conveying line for conveying the sludge to the treatment tank so as to be connected to the inflow line and the conveyance to the conveying line is controlled by the control unit, Wherein the control unit analyzes the light projected by the transmission unit and the light received by the reception unit to control the conveyance line.
KR1020150140276A 2015-10-06 2015-10-06 Apparatus for reducing sludge KR101645383B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101860102B1 (en) * 2018-01-26 2018-05-21 환경시설관리 주식회사 Wastewater Treatment System Including Non-coherent Phosphorus Components
KR101863696B1 (en) * 2018-01-26 2018-06-01 환경시설관리 주식회사 Bioreactor Sludge Reduction System
KR101863695B1 (en) * 2018-01-26 2018-06-01 환경시설관리 주식회사 Advanced treatment system to reduce sludge generation
KR101876787B1 (en) * 2018-01-25 2018-07-10 환경시설관리 주식회사 System for treatment of wastewater using aeration device with improved dissolution rate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2515255B2 (en) * 1987-04-13 1996-07-10 株式会社 鶴見製作所 Automatic adjustment device for sludge concentration in sewage treatment tank
JP2001321651A (en) * 2000-05-15 2001-11-20 Imai:Kk Agitating device
KR100393284B1 (en) 2001-05-11 2003-09-02 이근희 Combination process of pyrolysis and oxidation of organic compounds in supercritical water
KR100907915B1 (en) * 2008-12-23 2009-07-16 주식회사 한국종합기술 A bio apparatus for high efficient bio wastes digesting system using complete stirring multi-stage reactor(csmsr)
KR101458533B1 (en) * 2014-07-29 2014-11-07 코오롱워터앤에너지 주식회사 System For Reducing Sludge Using Metabolic Uncoupler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2515255B2 (en) * 1987-04-13 1996-07-10 株式会社 鶴見製作所 Automatic adjustment device for sludge concentration in sewage treatment tank
JP2001321651A (en) * 2000-05-15 2001-11-20 Imai:Kk Agitating device
KR100393284B1 (en) 2001-05-11 2003-09-02 이근희 Combination process of pyrolysis and oxidation of organic compounds in supercritical water
KR100907915B1 (en) * 2008-12-23 2009-07-16 주식회사 한국종합기술 A bio apparatus for high efficient bio wastes digesting system using complete stirring multi-stage reactor(csmsr)
KR101458533B1 (en) * 2014-07-29 2014-11-07 코오롱워터앤에너지 주식회사 System For Reducing Sludge Using Metabolic Uncoupler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101876787B1 (en) * 2018-01-25 2018-07-10 환경시설관리 주식회사 System for treatment of wastewater using aeration device with improved dissolution rate
KR101860102B1 (en) * 2018-01-26 2018-05-21 환경시설관리 주식회사 Wastewater Treatment System Including Non-coherent Phosphorus Components
KR101863696B1 (en) * 2018-01-26 2018-06-01 환경시설관리 주식회사 Bioreactor Sludge Reduction System
KR101863695B1 (en) * 2018-01-26 2018-06-01 환경시설관리 주식회사 Advanced treatment system to reduce sludge generation

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