KR101450772B1 - Sludge treating apparatus - Google Patents

Abstract

The present invention discloses a sludge treating apparatus having maximized purification efficiency. The sludge treating apparatus that sediments floating matters by using weir and discharges overlaying water includes extension bars having V-shaped grooves which are uniformly arranged disposed between V grooves formed in inner walls facing each other of the sludge treating apparatus and an inclination plate driving unit controlling rotation for installation angles of the inclination plates that are disposed at the uniform distance to induce the sedimentation of sludge. Thus, the extension bar having a V-shaped sectional area to extend to face the V grooves of the weir installed on the inner wall of the sedimentation bath may be disposed in each of the V grooves, and the V grooves may be uniformly disposed in a longitudinal direction of the extension bar to disperse a flow rate of the overlying water, thereby reducing concentration (SS) of the floating matters within the overlying water. Also, the inclination plate installed on a sedimentation area on which giant particles or congelation particles within waste water sink to the bottom of the sedimentation bath may be rotatable at a preset angle to discharge the sludge by changing the installed angle of the inclination plate at a time point at which an amount of sludge that passes through a multilayered thin film of the inclination plate and is sedimented, and thus the sedimentation rate of sludge may increase.

Description

[0001] SLUDGE TREATING APPARATUS [0002]

The present invention relates to a sedimentation tank, and more particularly, to a sedimentation tank that disperses the flow rate of wastewater flowing into a sedimentation tank in a wastewater treatment facility in all directions to provide Suspended Solid (SS) of a supernatant discharged through a weir And to increase the emission of the supernatant.

Generally, facilities for treatment of waste water and wastewater generally include a collection tank, a physical / chemical treatment tank, a biological treatment tank, a settling tank, and a discharge tank. In such a wastewater treatment facility, the settling tank clogs the wastewater introduced into the wastewater treatment facility for a long period of time to precipitate and remove the sludge contained in the wastewater.

That is, when wastewater containing various foreign substances (acid, alkali, heavy metal) is treated, calcium hydroxide is added to the wastewater to neutralize the wastewater, and the wastewater is supplied to the settling tank and treated by the hydroxide precipitation method. The wastewater supplied to the settling tank is conveyed to the mixing chamber under the precipitation tank by the head pressure. In order to enhance the coagulation effect of the sludge, the polymer coagulant, poly, is added and stirred. Then, the sludge is discharged through the mixing chamber So that it is allowed to settle down to the bottom of the settling tank.

The sludge produced by the continuous wastewater treatment process is conveyed by a transfer pump, compressed by a dehydrator and then treated with waste, and the supernatant separated from the sludge is discharged through a ware unit provided at the upper end of the sedimentation tank.

Since the wastewater in the upper part of the settling tank in which the sludge has settled is kept relatively clear, the upper part of the inside of the settling tank is provided with the overflow weir which allows only the supernatant to flow, and the supernatant introduced into the overflow weir is supplied to another treatment tank .

The overflow weir provided in the settling tank includes an outer wall formed with a continuous 'V' groove, an inner wall facing the outer wall at a predetermined interval, a bottom plate extending from the lower end of the outer wall to a lower end of the inner wall, And a discharge pipe for discharging the supernatant stored in the storage unit between the discharge pipe and the discharge pipe.

In addition, a swirling weir has been installed in the settling tank by fixing the other end of each support rod to the inner surface of the settling tank in a state where one end of the support rod is joined to the outer wall of the overflow weir.

The overflow structure of the sedimentation tank through the existing support rod is capable of recovering the supernal water at a certain level through the overflow weir. However, in order to maintain the overflow weir over a long period of time or to maintain the overflow weir, When the overflow weir enters or exits, the support bar may be tilted due to its own load or the load caused by the caretaker's access, and the horizontal state of the overflow weir may be out of order.

Therefore, there is a problem in that the recovery of the supernatant is not smooth because the inflow of the supernatant can be deflected to one side of the overflow weir. In addition, when the supernatant is deflected to the one side and flows into the overflow weir, The sludge which had been in the precipitated state could be re-floated, so that the sedimentation effect in the sedimentation tank was deteriorated.

This is because the flow rate and the flow rate of the supernatant water are irregular, which increases the flow rate in the sedimentation tank and causes the sludge settling in the sedimentation tank to bulge upward, so that the sludge settled in the lower part of the sedimentation tank is discharged together with the ascending water The effect of rectification was reduced.

As a result, both the sludge settling to the bottom of the settling basin and the float floating on the water surface not only rapidly pollute the water quality over time, but also generate a lot of odor and can be discharged in the effluent of the settling basin, It is possible to improve the water purification effect of sewage and wastewater.

1. Korean Registered Patent No. 10-0998518, filed on November 30, 2010, entitled "

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an overflow bar having a V-shaped cross section so as to extend a V groove of an overflow weir installed on the inner wall of a settling tank, And the V-shaped grooves are uniformly formed in the longitudinal direction of the extension bar, whereby the supernatant flow rate in the sedimentation tank can be dispersed to reduce the suspended solids concentration.

Another object of the present invention is to make it possible to rotate a plurality of swash plates provided in a settling region where large particles or coagulated particles sink into the bottom of a settling tank in a wastewater water at a predetermined angle so that the amount of slurry passing through the multi- Which is capable of increasing the sedimentation capacity by discharging the slurry by reversing the installation angle of the swash plate at a point of time when the slurry is discharged.

It is still another object of the present invention to provide a multilayer thin film material of a swash plate in which a multilayer thin film material is formed of a film made of polyethylene (PE) or polypropylene (PP) or a flexible film made of a PVC material, The present invention provides a sedimentation tank apparatus capable of preventing the slurry from being adsorbed by a thin film, increasing the sedimentation efficiency of the slurry, and ensuring smooth flow of water.

It is still another object of the present invention to provide a settling tank apparatus which is easy to install a multilayer thin film and can increase the efficiency of mass production by cutting a multilayer thin film into a cylindrical shape and engaging with a frame of a swash plate.

A sedimentation tank apparatus for achieving the above object is a sedimentation tank apparatus for sedimenting suspended matter using upflow weirs and discharging supersonic water. The sedimentation tank apparatus includes a V-shaped groove uniformly arranged between V grooves on the opposing inner wall of the sedimentation tank apparatus Respectively; And a swash plate driving device for controlling the rotation angle of the swash plate disposed at uniform intervals so as to induce the settling of the slurry.

The extension bar according to a preferred embodiment of the present invention forms a V-shaped groove at an upper end of a body bent so as to have a V-shaped cross section, Wherein mounting guides for receiving the V-grooves are formed at both ends of the body; And at least one support provided in a downward direction to support the body from the ground.

The length of one side of the curved surface of the body constituting the extension bar is 70 mm to 100 mm, the interval of the V-shaped groove is 150 mm to 300 mm, and the angle of the V-shaped groove is maintained at 90 °.

The swash plate is provided with a frame provided at a lower portion of the settling tank and having a pivot shaft so as to be pivotable on opposite sides of the inner wall; A thin film having a cylindrical structure whose upper and lower portions are opened and fitted to receive the outside of the frame to induce sedimentation of the slurry; A wire interlocking with the swash plate driving device; And a connection ring protruding from the upper portion of the frame for fastening or separating the wire and the frame.

Further, the frame is bent into a pipe to have a rectangular structure, and an anti-oxidation coating is formed on an aluminum material or a metal material capable of preventing oxidation; The thin film is realized in the form of a film or fabric of polyethylene or polypropylene, and is characterized in that a hydrophobic coating is formed on the shell.

In the settling tank device proposed in the present invention, an extension bar having a V-shaped cross section is provided in each V groove so as to extend the V groove of the overflow weir provided on the inner wall of the settling tank so as to face each other, By constituting the V-shaped grooves uniformly, it is possible to disperse the flow rate of the supernatant water and reduce the suspended solids concentration SS of the supernatant.

In addition, in the present invention, the swash plate provided in the settling region in which the large particles or coagulated particles sink into the bottom of the settling tank can be rotated at a set angle in the wastewater, so that at the time when the amount of slurry passing through the multi- So that the effect of discharging the slurry and increasing the sedimentation capacity of the slurry can be provided.

Figure 1 is a photograph illustrating a preliminary experiment for the implementation of the present invention.
FIG. 2 is experimental data measuring the improvement efficiency of the clarifier according to FIG.
3 is a perspective view for explaining a settling tank structure according to the present invention.
4 is a perspective view for explaining the extension bar of Fig. 3;
5 is experimental data for checking the cleaning efficiency according to the V-shaped groove interval provided in the extension bar of FIG.
FIG. 6 is experimental data for confirming the flow rate dispersion efficiency according to the V-shaped groove interval variation in the extension bar of FIG.
7 is a view illustrating a swash plate installation structure of the precipitation tank according to the present invention.
8 is experimental data for measuring the cleaning efficiency according to the driving of the multilayer thin film according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, a sedimentation tank apparatus according to the present invention is implemented based on an experiment to determine whether the flow velocity is dispersed due to the installation of an overflow weir. Practically, since no flow velocity occurs at the center of the sedimentation tank, the sludge floats without being precipitated. Therefore, the flow rate of the sedimentation tank should be dispersed so as to increase the discharge of the supernatant.

As shown in FIG. 1, the present applicant has installed a siphon which is perforated at a predetermined interval in a shear direction on sedimentation bases installed on both sides of the overflow weir to determine the quality of the supernatant. In this experiment, pre-experiment and post-experiment were measured from 3 hours after the experiment. As shown in the attached photograph, it was found that the supernatant of the sedimentation tank after the experiment was very clean.

The monthly flow rate of sedimentation tank used in the experiment is 3,000 m3 / day, which is 0.0347 m3 / sec per second. The siphon flow rate is 1.98 m / s, and the siphonal flow rate (V × A, V: flow rate, A: cross sectional area) is 1.98 × (0.003 m 2) = 0.006. Therefore, the siphon diameter is 61.0 mm, and in this experiment, the siphon hole is 0.01 mm × 9, and the pipe cross-sectional area is 0.003 m 2.

Based on these experiments, the improvement effect of the sedimentation basin clearly arises. FIG. 2 is experimental data measuring the improvement efficiency of the sedimentation basin. As shown in the figure, the suspended solids concentration (SS) of the sedimentation waters was improved by about 29%, thus recognizing that the quality improvement effect of water quality management was sufficiently generated.

Therefore, the present invention is based on the principle of the experiment described above, and the present invention provides a settling tank structure, and provides the settling tank structure according to the present invention as shown in FIG. As shown in the figure, the sedimentation tank apparatus 100 is provided with an inner wall 103 spaced apart from the outer wall 101 of a quadrangular structure provided in proportion to the wastewater treatment capacity so as to secure the discharge line 115, And a discharge port 111 extending to the discharge pipe path 115. The slurry reservoir 115 is provided at a lower portion of the outer wall 101 to store the slurry, (Not shown).

Each of the extension bars (V) has V-shaped grooves (105) uniformly arranged on opposite sides of the inner wall (103) and uniformly arranged between V grooves (105) The slope plate 121 having a multi-layered thin film is uniformly disposed below the sedimentation tank 100 in order to sediment the slurry of the wastewater flowing into the wastewater inlet 110 through the bottom.

The swash plate 121 is hinged so as to be rotatable in the sedimentation tank and includes a swash plate driving device 120 for controlling the installation angle of the swash plate 121 to increase the sedimentation efficiency of the slurry.

The swash plate driving device 120 includes a driving motor and a gear box for controlling the swash plate 121 to rotate at a predetermined angle. An upper portion of the swash plate 100, for example, the inner wall 103 and the outer wall 101, Respectively. Meanwhile, the swash plate 121 proposed in the present invention is designed to have a very low weight as a structure in which a multilayer thin film is bonded to a wire frame. Therefore, the swash plate driving device 120 can be implemented as a lever system using a hydraulically operated system, and the swash plate 121 can be rotated by lever operation by the manager.

The extension bar 130 is coupled to the V groove 105 along the longitudinal direction of the inner wall 103. The densification of the extension bar 130 and the purification efficiency are proportional to the installation interval, It is preferable to install the air conditioner at an interval of about 0.5M to 1M as the air conditioner is burdened with the burden of equipment cost in the purification facility.

Accordingly, since the length of the extension bar 130 also reaches several meters, it is preferable that a support for supporting the extension bar 130 is provided at the lower part of the extension part 130. The extension bar 130 according to the present invention has a V-shaped cross section and a structure corresponding to the V-groove 105.

4 is a perspective view showing an extension bar 130 according to the present invention.

As shown in the figure, a V-shaped groove 131 is formed at an upper end of a body 205 having a V-shaped cross section. The V-groove 105 of the overflow weir is formed at both ends of the body 205, And a support table 207 provided at least one downward direction to support the body 205 from the ground. If necessary, the installation guide 201 may include a plurality of coupling grooves 203 to be fastened to the inner wall 103.

The length of one side of the curved surface of the body 205 according to the present invention is approximately 70 mm to 100 mm, the interval between the V-shaped grooves 131 is suitably 150 mm to 300 mm, The angle is maintained at 90 [deg.], And the depth of the groove is not significantly involved. When the interval between the V-shaped grooves 131 is less than 150 mm, the flow rate of the supernatant increases and the float concentration SS becomes high. When the interval of the V-shaped grooves 131 exceeds 300 mm, the discharge amount of the supernatant decreases The flow velocity is not dispersed between the intervals of the V-shaped grooves 131, so that the concentration SS of the suspended particles becomes partially high.

That is, when the interval of the V-shaped grooves 131 is less than 150 mm, the interval of the V-shaped grooves 131 is narrow and the suspension of the suspension mixed with the supernatant and the slurry is generated, By providing the extension bar 130, the flow of the suspension is reduced by the body 205 located at the interval between the V-shaped grooves 131. When the interval of the V-shaped grooves 131 is narrow, The supernatant and the suspension are mixed and discharged.

On the other hand, if the distance between the V-shaped grooves 131 is more than 300 mm, stabilized water flow can be confirmed, but the number of the V-shaped grooves 131 is reduced and the purification capacity is reduced.

5 is experimental data for checking the cleaning efficiency according to the intervals of the V-shaped grooves 131 provided in the extension bar 130. As shown in FIG. The extension bar 130 installed between the V grooves 105 of the settling tank was uniformly arranged in units of 1M, and the extension bars 130, The bar 130 is made of a metal material.

In this experiment, the cleaning efficiency corresponding to the interval of the V-shaped grooves 131 provided in the extension bar 130 is measured. The angle of the V-shaped groove 131 is set to 90 ° as a normal angle, 205 has a length of one side of 70 mm. The spacing of the V-shaped grooves 131 was 50 mm to 400 mm, and experiments were performed at intervals of 50 mm.

For convenience of experiment, the V-shaped groove 131 of the extension bar 130 is formed in a unit of 50 mm, and a part of the V-shaped groove 131 is closed to vary the interval of the V-shaped groove 131 during the experiment. In the experiment, a purified water discharge amount and a suspended matter discharge amount were measured 3 hours after the start of the experiment, and a filter was installed on each side surface of the inner wall 103 to accommodate the suspension discharged into the V groove 105. Therefore, the amount of suspended matter after the experiment was measured as the suspension was loaded in the filter, and the amount of purified water discharged from the final stage was measured as supersonic water penetrated through the filter.

Three samples were used for each experiment (extension bars), and the results were assumed to be the average of three experiments. That is, one extension bar 130 is installed to perform an experiment, and another extension bar 130 having the same structure is installed under the same conditions, so that the same experiment is performed three times in total. Since the floating material is loaded in the V-shaped groove 131 of the extension bar 130, different samples are used to ensure the accuracy of the experiment.

First, the amount of the purified water discharged after three hours after uniformly installing the extension bars 130 having the intervals of 50 mm in the V-shaped grooves 131 in the unit of 1M was 578 m 3 and the discharge amount of the suspended matters was averaged 634 g was discharged. It is confirmed that the discharge capacity of the float is high considering that the existing method, that is, 620 g is discharged when there is no extension bar.

 As a result of measuring the amount of purified water discharged after 3 hours, an average of 556 m 3 was discharged. The average amount of suspended matters discharged was 627 g, which was 7 g .

On the other hand, when the interval between the V-shaped grooves 131 was extended to 150 mm, the discharge amount of the purified water was 538 m 3, and the rate of decrease of the discharge amount was lowered, and the discharge amount of the float was reduced to 601 g. When the interval of the V-shaped grooves 131 is extended to 200 mm, the discharge amount of purified water is 527 m 3, the discharge amount of suspended matters is 587 g, and when the interval of the V-shaped grooves 131 is extended to 250 mm, And the amount of suspended matters is 572 g.

As in the experimental data, when the interval of the V-shaped grooves 131 is 300 mm, the discharge amount of purified water is 506 m 3, the discharge amount of suspended matters is 557 g, the interval of V-shaped grooves 131 is 350 mm, the discharge amount of purified water is 492 m 3, The discharge amount was 542 g, and when the interval of the V-shaped groove 131 was set to 400 mm, the discharge amount of purified water was reduced to 483 m 3, and the discharge amount of suspended matters was also reduced to 531 g.

As described above, it has been confirmed that the amount of the purified water discharged from the suspension becomes smaller as the gap between the V-shaped grooves 131 increases, and the amount of suspended matters is also reduced. However, when the interval between the V-shaped grooves 131 is 150 mm, the decrease amount of the purified water starts to decrease. When the interval is 50 mm and 100 mm, the average decrease is 20 m 3, .

It will be appreciated that the discharge of the purified water substantially increases the discharge amount of the suspension as the distance between the V-shaped grooves 131 as the water excluding the suspended matters in the suspension becomes smaller. However, when the interval between the V-shaped grooves 131 is less than 150 mm, the amount of the purified water is increased because the gap between the V-shaped grooves 131 is narrow and the water flow is large. That is, when the water flow is large, the movement of the surface of the suspension is increased, and it is judged that the purified water containing suspended matter is easily discharged by the water stream.

Further, when the interval between the V-shaped grooves 131 is large, the water flow will be stabilized, and it is recognized that the discharge amount of the purified water is greatly reduced because the suspension of the suspension, which is suspension of the suspension, is easy.

On the other hand, the amount of suspended matters decreases 15.4g on the average to 300mm in the interval of the V-shaped grooves 131, and decreases 13g on average when the distance exceeds 300mm. That is, when the distance between the V-shaped grooves 131 is more than 300 mm, the discharge amount of the suspended matters is gradually reduced. This is considered to be a phenomenon due to the flow of water, that is, a phenomenon due to water flow. When the interval between the V-shaped grooves 131 is about 300 mm, the flow of water is very stable and the discharge of floating matters is reduced in the V- to be.

Of course, this phenomenon may be limited to the capacity (size) of the settling tank, but the technical principle of the present invention may be applied to the settling tank to which the present invention is applied in a general manner.

Here, it is appreciated that the flow velocity becomes higher as the interval of the V-shaped groove 131 becomes narrower, and the flow velocity becomes lower as the interval of the V-shaped groove 131 becomes larger. Therefore, in the present invention, the flow velocity at the inlet of the sedimentation tank, that is, the position close to the wastewater inlet 110 is usually late and the velocity near the outlet 111 is fast, .

In the present invention, a plurality of extension bars 130 are provided to disperse the flow rate of the sedimentation tank. However, even in this case, the flow velocity at a position close to the wastewater inlet 110 of the sedimentation tank and the flow velocity near the outlet 111 A difference occurs.

6, when the distance between the V-shaped grooves 131 provided in the extension bar 130 is uniformly maintained, the discharge amount of the supernatant is variable depending on the installation position of the extension bar 130. As shown in FIG. This is because the closer to the outlet the higher the flow rate, and the closer to the outlet the lower the flow rate.

Experiments were carried out in a sedimentation tank with a total of 14 extension bars (130), and the emission of the extension bars (130) located in the biocide was measured for the visibility of the measurement data. The measurement method was to measure the amount of emission of the supernatant for 2 hours, totaling 5 times to calculate the average value, and then calculating the deviation for each exhaust port.

As a result of the actual measurement, the supernatant discharged through the No. 1 extension bar (frame 1) closest to the discharge outlet was discharged 7.3 m 3 for 2 hours. It was noted that the supernatant discharged through the third extension bar (frame 3), which is the third closest to the outlet, was somewhat reduced to 7.1 m3 for 2 hours.

In addition, an average of 6.6 m 3 of the supernatant discharged through the fifth extension bar (frame 5) adjacent to the outlet was discharged, and the supernatant discharged through the seventh extension bar 7 (frame 7) . Subsequently, in the ninth, an average of 5.7 m3 was discharged, and in the eleventh mine, 5.0 m3 and at the end, 4.3 m3. Therefore, the deviation of the emission of the supernatant was calculated as 0.5 m3.

In the meantime, as in the second experiment, since the interval of the V-grooves 105 of the extension bar 130 is varied from 300 mm to 200 mm and the flow velocity in the inlet direction is low, the interval of the V- And the interval of the V-grooves 105 of the extension bar closest to the discharge direction was set to 300 mm, which is the maximum value.

As a result of the experiment, the supernatant discharged from the first extruder closest to the outlet was 6.1 m 3, and the supernatant discharged from the third extruder was slightly reduced to 5.8 m 3. In the fifth case, it was similar to 5.9㎥. In the seventh case, 6.2㎥, the ninth case was 6.1㎥, the eleventh case was 5.8 cubic meter, and the last case was 5.9 cubic meter, and the deviation was 0.03 cubic meter.

That is, it was confirmed that the flow velocity was very stable throughout the sedimentation tank when the V groove 105 was varied. Accordingly, one extension bar 130 applied in the present invention forms V grooves having the same interval, but narrows the V-groove interval of the extension bar installed close to the inlet to disperse the flow rate of the settling tank.

The slope plate 121 includes a multi-layered thin film. The slope plate driving device 120 slides the slurry to a predetermined angle (?) By the slope plate driving device 120, As shown in Fig.

The swash plate 121 is generally inclined at an angle of 5 ° to 30 °, and in the present invention, it is controlled to operate at an angle of -30 ° to -5 °. The swash plate driving device 120 is a device for operating and controlling the installation angle described above. The swash plate driving device 120 includes a reduction gear in addition to the driving motor. The swash plate 121 is rotated by a wire wound around the reduction gear. The driving motor is composed of a servomotor and can maintain the accuracy of the rotation angle. However, if necessary, the rotation angle can be controlled by the reduction gear and the limit switch by using a DC motor, and manual operation by the lever is also possible.

Fig. 7 is a view illustrating the swash plate mounting structure of the above-described sedimentation tank.

As shown in the figure, a frame 401 having a rotating shaft 403 installed at the lower part of the sedimentation tank and coupled to the opposite side surface of the inner wall 103 so as to be rotatable, A swash plate 121 composed of a thin film 405 for guiding the swash plate 120 and a connecting ring 407 projecting from the upper part of the frame 401 to be engaged with a wire 411 interlocked with the swash plate driving device 120, Are uniformly arranged at the set angle.

The connection ring 407 is a means for connecting the frame 401 and the wire 411. In the process of replacing the thin film 405, the connection ring 407 is unlocked, 411). Accordingly, the linking ring 407 has a clip shape or a fastener structure having an arbitrary shape.

The pivot shaft 403 guides the swash plate 121 to rotate in a hinge. The swash plate 403 can be positioned at the center of the side of the swash plate 121 or at the lower side of the swash plate 121. At this time, when the rotating shaft 403 is positioned at the center of the side of the swash plate, the wire 411 is fastened to the upper portion or the lower portion of the frame 401. On the other hand, when the pivot shaft 403 is positioned below the side of the swash plate, the installation position of the wire 411 should be fastened to the upper part of the frame 401. It is assumed that the pivot shaft 403 proposed in the embodiment of the present invention is located at the lower side of the swash plate.

Meanwhile, as shown in the figure, the thin film 405 has a cylindrical structure with upper and lower openings, and is used by being cut by the height of the frame 401. This is to facilitate the replacement of the thin film 405 and to improve the productivity of the thin film 405. [ That is, the thin film 405 is mass-produced in a cylindrical structure, wound around a predetermined roll, and provided with an incision at each position corresponding to the height of the frame 401. Accordingly, the user inserts the thin film 405 of the cylindrical structure into the frame 401 and then engages with the frame 401.

To this end, the connection ring 407 is unlocked to separate the wire 411 and the frame 401, and then the cylindrical thin film 405 is inserted and installed from above the frame 401. Here, it is preferable that the pivot axis 403 is positioned below the frame 401 as described above, and the frame 401 is preferably a rectangular frame by bending the pipe.

The swash plate 121 having such a configuration is extremely low in weight, and the replacement of the thin film 405 is extremely facilitated, leading to reduction in facility operation cost. That is, as the thin film 405 is cleaned after replacing the thin film 405 collectively, the operation cost required for cleaning is greatly reduced.

In order to uniformly arrange the swash plates 121 in a uniform manner, the interval between the swash plates 121 can be varied according to the purge capacity, and the swash plate 121 is also set within an angle range of 5 ° to 30 °.

The frame 401 is formed to have a square shape by bending a metal pipe, and may be made of an aluminum material or a metal material capable of preventing oxidation of a material.

The swash plate driving device 120 may be installed between the inner wall 103 and the outer wall 101 or may be installed underwater in the settling tank if necessary. However, in the embodiment of the present invention, the swash plate driving device 120 is installed outside the settling tank and controls the swing angle of the swash plate 121 by using two wires. Therefore, the wire is vertically guided by a guide projection or a bearing or the like provided under the inner wall 103 on which the swash plate driver 120 is installed.

The thin film 405 is a cylindrical structure having upper and lower openings as described above, and is realized in the form of a film or fabric made of polyethylene or polypropylene, and a hydrophobic coating is formed on the outer surface of the thin film 405.

The slope plate 121 has a plurality of horizontally stacked structures having a predetermined interval. The slurry collides with the thin film 405 by the flow of the suspension flowing through the wastewater inlet 110 at the lower part of the settling tank, , And falls to the slurry storage unit 113. Therefore, the slurry may be adhered and fixed to the thin film 405 of the swash plate 121, and the cleaning efficiency may deteriorate over a long period of time.

Therefore, the swash plate drive device 120 proposed in the present invention can reverse the angle of the swash plate 121 before the slurry is adhered to the thin film 405, causing the slurry to fall into the slurry storage part 113, It will increase.

That is, the swash plate driving device 120 inverts the angle of the swash plate 121 by a predetermined time, for example, every two hours, so that the slurry adsorbed by the thin film 405 is settled on a predetermined time basis.

For this purpose, when the set time comes, the swash plate driving device 120 operates the driving motor so that the wire 411 wound on the reduction gear and the wire extending from the wire 411 in the opposite direction are opposed to each other So that the swash plate 121 is pivoted in the opposite direction at an angle set around the pivot shaft 403. In addition, when the set time, for example, 2 hours has elapsed, the rotation angle of the drive motor is reversed to reset the installation angle of the swash plate 121 in the opposite direction.

As described above, according to the present invention, a manual operation lever can be provided without using the swash plate driving device 120, so that the rotation of the swash plate 121 can be controlled only by lever operation.

8 is experimental data for measuring the cleaning efficiency according to the above-described driving of the multilayer thin film.

As shown in the graph, in the slurry discharge measurement experiment 1, the discharge amount of the slurry was measured every 2 hours while all the thin film panels 400 were fixed. The size of the thin film was 7M × 1.8M and the material of the thin film was polypropylene fabric. The material and size of the thin film are typical installation specifications.

First, after the lapse of 2 hours, the amount of slurry settled 1.2 kg, and then cumulatively measured 2.3 kg, 3.1 kg, 3.8 kg, 4.3 kg, 4.7 kg, 5.1 kg, and 5.4 kg in succession every 2 hours . The average discharge of slurry was found to be 0.6 kg every 2 hours.

On the other hand, the thin film panel was rotated at a predetermined angle every 2 hours, that is, changed to -30 after 2 hours from the initial set angle of 30 deg. The other conditions were the same as in Experiment 1 for slurry discharge measurement.

As shown in the figure, 1.3 kg of slurry was discharged after the first 2 hours had elapsed, and then the installation angle of the thin film panel was changed every 2 hours to measure the removal capacity of the slurry. As a result, 2.4 kg, 3.3 kg, 4.2 kg, 5.2 kg, 6.1 kg, 6.9 kg, and 7.8 kg. It was judged that it discharged 0.92kg of slurry on average and showed a cleaning efficiency of 50% or more as compared with the conventional method.

100: settling tank apparatus 101: outer wall
103: inner wall 105: V groove
110: Wastewater inlet 111: Outlet
113: slurry storage unit 115: discharge pipe
120: swash plate drive device 121: swash plate
130: Extension bar 131: V-groove
401: frame 403:
405: thin film 407: connecting ring
411: Wire

Claims (9)

A settling tank apparatus for precipitating floating matters using an overflow weir, an extension bar having a V-shaped groove uniformly arranged between the V grooves of the inner wall facing each other, and an installation angle of the inclined plate disposed at uniform intervals to induce settling of the slurry And a swash plate driving device for swingingly controlling the swash plate driving device,
Wherein the spacing of the V-shaped grooves is designed to be narrower as the extension bars are closer to the discharge port, and the interval of the V-shaped grooves to be narrower as the extension bars are closer to the inlet.
delete The method according to claim 1,
The extension bar forming a V-shaped groove at the upper end of the body bent to have a V-shaped cross section;
And a support base on which both ends of the body are provided with installation guides for receiving the V-grooves. The method of claim 3,
Wherein the length of one side of the folded surface of the body is 70 mm to 100 mm, the spacing of the V-shaped grooves is 150 mm to 300 mm, and the angle of the V-shaped groove is maintained at 90 °. [2] The apparatus according to claim 1,
A frame installed at a lower part of the sedimentation tank and having a pivoting shaft to be pivotable on opposite sides of the inner wall;
A thin film having a cylindrical structure whose upper and lower portions are opened and fitted to receive the outside of the frame to induce sedimentation of the slurry;
A wire interlocking with the swash plate driving device;
And a connection ring protruded from the upper portion of the frame to fasten or separate the wire and the frame. 6. The method of claim 5,
The frame is bent into a pipe to have a square structure, and an anti-oxidation coating is formed on an aluminum material or a metal material capable of preventing oxidation;
Characterized in that the thin film is embodied in the form of a film or fabric of polyethylene or polypropylene and has a hydrophobic coating on the shell. 6. The method of claim 5,
Wherein the swash plate driving device controls the rotation of the thin film panel composed of the frame and the thin film by winding the wire by a driving motor. 6. The method of claim 5,
Wherein the swash plate driving device is installed between the inner wall and the outer wall of the settling tank;
And a wire guide protrusion or a bearing for vertically guiding a copper wire of the wire is installed at a lower portion of an inner wall provided with the swash plate driving device. 6. The method of claim 5,
Wherein the swash plate driving device is a lever for manual operation.

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