KR20140142502A - Absorption device for suspension concentration - Google Patents

Abstract

The present invention relates to an absorption-type suspension concentrating device. When a rotation drum is partially buried in a suspension, an absorption member combined on an inner circumference surface absorbs moisture of the suspension. As the absorbed moisture is dehydrated by pressurization of a press roll, and is separated and discharged, the suspension of microalgae contained in a storage container can be maintained in a condition of a concentration which has low moisture content.

Description

Absorption device for suspension concentration < RTI ID = 0.0 >

More particularly, the present invention relates to an absorption type suspension concentrator, and more particularly, to an absorption type suspension concentrator which is capable of absorbing moisture of a suspension, The present invention relates to an absorption-type suspension concentrator capable of being dewatered and discharged by pressurization of a squeeze roll so that a microalgae suspension contained in a storage container can be maintained in a concentrated liquid state with a low water content.

In general, dehydration means a process in which water is removed from petal matter, and the object of dehydration includes various kinds of minerals such as sewage sludge, microalgae, and wood pulp. In particular, dehydration of microalgae is becoming more important as interest in bioenergy becomes more widespread.

Microalgae particles are a species of algae that grow through photosynthesis in the ocean or freshwater, ranging in size from a few micrometers to hundreds of micrometers.

Seawater or freshwater containing micro-algae particles is like a sparse suspension and has an initial water content of about 99.99 wt%. Therefore, when using existing dewatering equipment, you have to pay huge energy costs for dehydration.

Therefore, if the suspension containing microalgae particles having a high water content is lowered to a certain water content, it is necessary to precede that the dehydration process requires less energy and lower energy cost.

Typical devices used for dewatering are centrifugal, belt press, vacuum filtration, and pressurized filtration. Most of these dewatering devices are used for dehydration of sewage sludge and minerals. The device used for the dewatering of sewage sludge or minerals is mainly suitable for filtration and dehydration of solid particles having a large specific gravity or large particle size compared with water.

Particularly, as a filtration apparatus for solid particles having a large specific gravity, there is a "slurry and resource recycling filter apparatus (registration number: 10-1181893) ".

Such a conventional apparatus is a device for removing particulate matter in wastewater. The drum filter is placed in filtration water so that the treated water filtered out is introduced into the drum filter. The foreign substances adhering to the surface of the drum filter are removed through a pressing roller , And is configured to separate foreign substances from which moisture has been removed by a scraper.

However, such a conventional apparatus has the following problems.

Firstly, it is suitable for separating the solid solution of the large slurry, but it is difficult to filter it by the general filter when it is used as a device for obtaining micro-algae particles.

Secondly, there is a problem that the air gap of the dream filter is very large, and foreign substances on the microparticles are also introduced into the drum filter together with moisture.

Third: There is a problem that the equipment cost and the operating cost are high because of the complicated device.

Fourth: Since the surface of the drum filter is separated by the scraper, there arises a problem that the filter is damaged due to the scraper.

SUMMARY OF THE INVENTION It is a first object of the present invention to provide an absorbent article which absorbs moisture of a suspension when the rotary drum is partially filled with a suspension, It is an object of the present invention to provide an absorption-type suspension concentrator which is capable of maintaining the state of a low-water-content concentrated liquid by dewatering and discharging the absorbed water by pressurization of a squeeze roll.

A second object of the present invention is to provide a method for preventing microbial particle penetration into a pore of a filter by spraying and removing washing water, So that it is possible to avoid the above-mentioned problems.

A third object of the present invention is to provide an absorbent article which is absorbed in the direction opposite to gravity because the absorbent member is located at the top of the suspension so that the adhesion of the particles onto the filter can be lowered and the permeability of the filter can be prevented The present invention is to provide an absorption type microalgae dehydrating apparatus having a structure having a structure.

According to a first aspect of the present invention, there is provided an absorption-type suspension concentrator, wherein a lower portion of the suspension of microalgae stored in the interior of the storage container (10) is partially stored A hollow rotary drum 20 in which a plurality of through holes 21 are formed along a circumferential surface so that a microalgae particle suspension can be introduced into the rotary drum 20; And a filter 30 connected to the inner circumferential surface of the rotary drum 20 and passing through the through hole 21 and the filter 30 of the rotary drum 20, An absorbing member 40 for absorbing moisture of the microalgae suspension, and an absorbent member 40 for absorbing moisture of the microalgae suspension so as to prevent separation and sagging of the absorbent member 40 upon absorption of moisture by the microalgae suspension, A plurality of support rods 23 arranged in a large number, And is rotatable with the rotary drum 20 while being coupled to both ends of the front drum 20 so as to support both ends of the support rods 23 and to move the support rods 23 in the direction of the absorbent member 40, And a pressing roll 50 disposed inside the rotary drum 20 for pressing and dewatering water absorbed by the absorbing member 40 upwardly, ; And a discharge pipe (70) disposed inside the rotary drum (20) so as to discharge moisture that is dewatered by the press roll (50) and falls into the rotary drum (20) do.

In a second aspect of the present invention, in the first aspect of the present invention, an injection pipe (60) for injecting washing water to remove microalgae particles infiltrating the gap of the filter (30) is further provided on the upper side of the rotary drum desirable.

In a third aspect of the present invention, in the second aspect of the present invention, a collecting tube (80) is provided below the spray tube (60) so as to collect and discharge washing water containing microalgae particles, It is preferable that the side surface is made of a silicon material so as to be in close contact with the filter 30 and to prevent the rotating filter 30 from being damaged.

The fourth aspect of the present invention is the fourth invention according to the first aspect of the present invention, wherein the press roll 50 has both ends connected to the rod 511 of the cylinder 51 via the bearing B, It is preferable that the degree of dehydration of the adsorbent is adjustable.

In the fifth invention, in the first invention, the rotary disk (22) has a diameter relatively larger than the diameter of the rotary drum (20), and the rotation of the rotary drum A plurality of guide rollers 11 that are in contact with the rotary disk 22 and are rolled to guide the rotary disk 22.

According to the absorption type suspension concentrating apparatus according to the present invention, it is possible to prevent sagging and shape deformation of the absorbing member that absorbs moisture, thereby extending the service life of the apparatus.

In addition, a single rotating drum is used to partly store the suspension of microalgae particles, thereby separating only the water, thereby achieving a very simple structure and reducing the operating cost.

In addition, there is an effect that damage of the filter can be avoided by spraying the washing water to remove fine algae particles that have penetrated into the pores of the filter.

Also, when the washed filter is stored in the storage container, the air gap is not blocked and the concentration of the microalgae suspension stored in the storage container can be lowered to the target moisture content in a short time.

In addition, since the absorbent member is located at the upper end of the suspension, absorption is performed in the direction opposite to the gravity, so that adhesion of particles on the filter can be lowered, and the permeability of the filter can be prevented from being reduced.

1 and 2 are a perspective view of an absorption suspension concentrator according to the present invention,
Figure 3 is a front view of an absorption suspension concentrator according to the present invention,
4 is a cross-sectional structural view of an absorption-type suspension concentrator according to the present invention,
Figures 5 and 6 are operational views of an absorption suspension concentrator according to the present invention.

Hereinafter, the absorbent suspension concentrator according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are perspective views of an absorption suspension concentrator according to the present invention, FIG. 3 is a front view of an absorption suspension concentration apparatus according to the present invention, and FIG. 4 is a cross-sectional structural view of an absorption suspension concentration apparatus according to the present invention.

As shown in FIGS. 1 to 4, prior to dewatering a suspension having a high water content including microparticles such as microalgae particles, the water content of the suspension is lowered to increase the dehydration rate (100) capable of reducing the cost of dewatering.

When the rotary drum 20 is partially submerged with the microalgae suspension, the absorption member 40 coupled to the inner circumferential surface of the rotating rotary drum 20 absorbs the moisture of the suspension, And the resulting water is dehydrated and discharged by pressurization of the press roll 50 so that the microalgae suspension contained in the storage container 10 can be maintained in a concentrated liquid state with a low water content.

This absorbent suspension concentrator 100 mainly comprises a rotary drum 20, an absorbent member 40 and a pressing roll 50.

The rotary drum 20 has a structure in which a motor M is connected to rotate and has a linear hollow tube shape in which a plurality of through holes 21 are formed so that a suspension of fine algae flows along a circumferential surface.

Here, the filter 30 is embedded in the surface of the rotary drum 20.

It is preferable that the filter 30 is constituted by a membrane filter such that fine algae particles of a few micrometers to several hundreds of micrometers remain in the storage container 10 and only water can be absorbed by the absorption member 40 Do.

The absorbent member 40 is coupled to the inner circumferential surface of the rotary drum 20 and absorbs moisture of the microalgae suspension through the filter 30 and the through holes 21 of the rotary drum 20.

The absorbent member 40 includes multiple pores and can be made of a material such as a sponge and a latex so that moisture is forcibly absorbed by a capillary action and the shape of the absorbent member 40 is restored to a circular state by elasticity after dewatering.

A plurality of support bars 23 are disposed on the inner circumferential surface of the absorbent member 40 at predetermined intervals so that the absorbent member 40 absorbs the moisture contained in the suspension of the microalgae particles And functions to prevent separation and sagging inside the rotary drum 20 when rotating.

Each of the supporting bars 23 is inserted into and supported by a rotary disk 22 coupled to both ends of the rotary drum 20 and rotated together with the rotary drum 20. Therefore, the rotary disk 22 should have an inner diameter relatively smaller than the inner diameter of the rotary drum 20.

A plurality of guide grooves 221 are formed radially so that the support rods 23 can move in the direction of the absorbent member 40 while supporting both ends of the support rods 23 Structure.

In addition, the rotary disk 22 has a diameter that is relatively larger than the diameter of the rotary drum 20.

The rotary disk 22 having such a structure is for guiding the rotation of the rotary drum 20 and is rolled with a plurality of guide rollers 11 disposed under the rotary drum 20 so that the rotary drum 20 smoothly So that it can be rotated.

On the other hand, the pressing roll 50 functions to dewater the water absorbed in the absorbing member 40 by vertically upwardly pressing the absorbing member 40 disposed inside the rotary drum 20. Accordingly, there is a structure in which water is dewatered in a region where the absorbent member 40 is in contact with the squeeze roll 50 and a region in which moisture can be absorbed in all other regions, thereby increasing the water removal efficiency do.

The pressing roll 50 is configured such that both ends of the pressing roll 50 are coupled to each other via the rod 511 of the cylinder 51 and the bearing B so as to press the absorbing member 40 at the corresponding position. As a result, the degree of dehydration of the absorbing member 40 can be adjusted according to the degree of pressing of the pressing roll 50. [

On the other hand, since the support rod 23 moves along the guide groove 221 of the rotary disc 22 when the press roll 50 presses the absorbent member 40, the press roll 50 presses the absorbent member The interference of the support rods 23 can be avoided.

The moisture that is dewatered by the pressing roll 50 is vertically dropped into the rotary drum 20 and the moisture thus dropped is separated through a discharge pipe 70 disposed inside the rotary drum 20 .

The discharge pipe (70) is installed close to the inner ceiling of the rotary drum (20), and the other side is arranged to be inclined downward so that the falling water can be separated and discharged to the outside by its own weight in real time.

On the other hand, a spray tube 60 for spraying washing water is installed on the upper side of the rotary drum 20 in order to remove micro-algae particles infiltrated into the cavity of the filter 30.

A plurality of spray nozzles 61 are coupled to the spray tube 60. The spray nozzles 61 spray clean water in a circumferential direction of the filter 30 to remove fine algae particles .

When the micro-algae particles infiltrated into the filter 30 are removed in real time by the washing water, the absorbent member 40 of the rotating drum 20 can smoothly absorb moisture contained in the suspension of microalgae particles .

On the other hand, a collecting pipe (80) is further installed in the lower part of the spray pipe (60) so as to collect and discharge the washing water containing microalgae particles.

The collecting tube 80 prevents the washing water from flowing into the storage vessel 10 along the surface of the filter 30 and flows along the surface of the filter 30 so that the air gap of the filter 30 rises again It functions to prevent clogging.

Here, the collecting pipe 80 is made of a silicon material, and one side of the collecting pipe 80 is disposed in close contact with the surface of the filter 30. This silicon material is intended to prevent the rotating filter 30 from being damaged by the frictional force.

Hereinafter, the operation of the absorption type suspension concentrator according to the present invention will be briefly described.

Figures 5 and 6 are operational views of an absorption suspension concentrator according to the present invention.

First, the rotary drum is partially housed in the storage container 10 in which the microalgae particle suspension is stored.

The fine algae particles are filtered by the filter 30 and only water is absorbed into the absorbing member 40 through the filter 30 and the through holes 21 of the rotary drum 20.

Since the absorbent member 40 is located at the upper end of the suspension, the absorbing member 40 is absorbed in the direction opposite to the gravitational force, so that the adhesion of the particles on the filter 30 can be lowered and the permeability of the filter 30 is reduced Is prevented.

In this state, when the rotating drum 20 is rotated through the motor M, the absorbent member 40 in which moisture is absorbed is rotated and pressed against the absorbent member 40 at the inner ceiling portion of the rotating drum 20, The water is dehydrated by the roll (50).

The water dehydrated by the press roll 50 is vertically dropped into the discharge pipe 70 and discharged to the outside by its own weight according to the inclination of the discharge pipe 70.

The micro-algae suspension having an initial moisture content of about 99.99 wt% stored in the storage container 10 is lowered to about 97 wt%, and after the dewatering process, about 20 to 25% To be used as bio-energy resources or to be used as an organic material.

At the same time, micro-algae particles that have penetrated into the voids of the filter 30 in real time are removed through a spray tube 60 disposed on the upper side of the rotary drum 20.

In this case, the spray tube 60 is sprayed with the washing water through the plurality of spray nozzles 61 in the circumferential direction of the filter 30 to remove the fine algae particles that have penetrated into the pores of the filter 30.

Here, the washing water containing the fine algae particles is dropped by the collecting pipe 80 and is collected and discharged to the outside.

Therefore, when the washed filter 30 is again stored in the storage container 10, the pores are not blocked, and the absorbent member 40 continuously absorbs the moisture contained in the microalgae particle suspension. Therefore, the concentration of the fine algae particle suspension stored in the storage container 10 can be lowered to the target moisture content in a short time.

As described above, according to the absorption type suspension concentrator according to the present invention, it can be used for pretreatment and dehydration of sewage sludge, wood pulp and minerals.

 It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

10: Storage container 11: Guide roller
20: rotating drum 21: through hole 22: rotating disk
221: guide groove 23: support rod
30: Filter
40: absorptive member
50: compression roll 51: cylinder 511: rod
60: jetting tube 61: jetting nozzle
70: discharge pipe
80 collection tube
M: Motor
100: Absorption Suspension Condenser

Claims (5)

An absorption suspension concentrator for partially separating and storing moisture contained in a microalgae suspension in a storage container (10) in which a microalgae particle suspension is stored,
A hollow rotary drum (20) having a plurality of through holes (21) formed along a circumferential surface thereof so that a lower portion thereof is partially stored in the suspension of microalgae stored in the storage container (10) 20);
A filter (30) mounted on the surface of the rotary drum (20) to prevent microalgae particles from flowing into the rotary drum (20);
An absorption member 40 coupled to an inner circumferential surface of the rotary drum 20 to absorb moisture of the microalgae suspension through the through hole 21 of the rotary drum 20 and the filter 30;
A plurality of support rods 23 disposed at a predetermined interval on the inner circumferential surface of the absorbent member 40 so as to prevent the absorbent member 40 from separating and sagging when moisture of the microalgae suspension is absorbed;
So that the support rods 23 can move in the direction of the absorbent member 40 while supporting both ends of the support rods 23 while being rotated together with the rotary drum 20 by being coupled to both ends of the rotary drum 20 A rotary disk 22 having a plurality of guide grooves 221 radially formed therein;
A squeeze roll (50) disposed inside the rotary drum (20) for pressurizing and dewatering water absorbed in the absorbent member (40) upwardly; And
And a discharge pipe (70) disposed inside the rotary drum (20) so as to discharge water dropped by the pressing roll (50) and dropped into the rotary drum (20) Absorption type suspension concentrator.
The method according to claim 1,
Characterized in that an upper portion of the rotary drum (20) is further provided with a spray tube (60) through which washing water is sprayed to remove fine algae particles that have penetrated into the cavity of the filter (30).
3. The method of claim 2,
A collecting pipe (80) is installed in the lower part of the injection pipe (60) so as to collect and discharge the washing water containing fine algae particles,
Characterized in that the collecting tube (80) is made of a silicone material to prevent one side of the filter (30) from coming into close contact with the filter (30) and damaging the rotating filter (30).
The method according to claim 1,
The compression roll 50 is configured such that both ends of the compression roll 50 are coupled to each other via the rod 511 of the cylinder 51 and the bearing B to adjust the degree of dehydration of the compression roll 50 with respect to the absorption member 40 Characterized by an absorption type suspension concentrator.
The method according to claim 1,
The rotary disk 22 has a diameter that is relatively larger than the diameter of the rotary drum 20. The rotary disk 22 is inserted into the storage container 10 to guide the rotation of the rotary drum 20. [ And a plurality of guide rollers (11) which are brought into contact with the rollers and are rolled.

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