KR100930635B1 - Sludge removal device for the settling pond - Google Patents

Abstract

PURPOSE: A sludge removal apparatus for a settling pond is provided to increases sludge removal effects by collecting fine sludge effectively, and to increase purification efficiency of the settling pond by maintaining the low density of suspended materials. CONSTITUTION: A sludge removal apparatus for a settling pond includes a plurality of multi-layered refining plate(1), a sludge collecting unit(2), an upward high-speed sedimentation unit(3). The multi-layered refining plate includes a first perforated plate and a second perforated plate. The first perforated plate includes a plurality of first through holes. A second perforated plate is installed at a rears die of the first perforated plate. The second perforated plate includes a second through hole. The sludge collecting unit includes a suction pipe(21), a suction pressure forming part(22), a sludge suction bogie(23), and a bogie driving part(24). A plurality of bogie movement rollers(231) are equipped on the bottom of the sludge suction bogie. The bogie driving part reciprocates the sludge suction bogie according to the suction pipe.

Description

Sludge removal device for the settling pond}

The present invention relates to a facility of a sedimentation basin that collects sludge introduced from raw water that has passed through a sedimentation basin or a reaction tank so that the sludge is purified by gravity and precipitated by gravity. It relates to a sludge treatment apparatus.

Gravity rectangular sedimentation technology maintains the principle of filtering by sedimentation of sludge which is basically introduced during the advancement of various methods of sewage treatment. In order to quickly settle the sludge in the settling tank, fine sludge should easily form agglomerate in water and settle to the bottom of the settling basin.

The purified water treatment facility using the activated sludge method contains a large amount of organic sludge to supply abundant air to the influent wastewater and stirs the suspended solids and many organic solids to be absorbed or adsorbed to the sludge mass to precipitate the sludge. Is recovered and recycled.

The water purification facility using the activated sludge method generates mixed liquor suspended solids (MLSS) higher than the proper conditions as the sewage with high organic matter discharged from the home is directly introduced into the water purification facility, and the viscosity of the MLSS is lowered, resulting in a large amount of fine particles. Sustained solids (SS) are often placed under conditions where they occur.

In this case, as the sludge does not sink quickly in the sedimentation basin, the operation efficiency of the sedimentation basin decreases.

The present invention has been made to solve the above-described problems, embodiments of the present invention has an object to smoothly settle sludge in the sedimentation basin regardless of the conditions of the influent water.

Specifically, the suspended solids are effectively absorbed or adsorbed to the sludge mass so that precipitation occurs quickly.

In order to solve the above problems, the present invention is provided with a first porous plate formed with a plurality of first through holes through which the treated water passes in an embodiment, and are spaced apart from the rear of the first porous plate and moved forward and backward with the first through holes. A multi-rectifier plate having a second porous plate having a second non-overlapping passage hole is installed to be spaced apart from an inner wall surface provided with an inlet for inflow of treated water, and is horizontally moved from the bottom of the sedimentation basin to suck and discharge the sludge. The sludge collecting means is further provided, and the sludge collecting means has a suction pipe installed horizontally along the center of the bottom of the sedimentation basin, and induces a suction pressure in the suction pipe while being connected to the tip of the suction pipe. Suction pressure forming unit for discharging the sludge to the outside, and while being connected to the end of the suction pipe while moving horizontally along the suction pipe Suction sludge precipitated at the bottom of the sedimentation basin by the suction pressure generated by the suction pressure forming unit to induce the suction pipe, the lower portion is provided with a sludge suction trolley with a plurality of trolley moving rollers, and the sludge suction trolley along the suction pipe Sludge treatment apparatus of the sedimentation basin characterized in that it comprises a bogie drive unit for reciprocating horizontally.

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In addition, the storage wall is provided inside the sedimentation basin spaced apart from the outer wall of the sedimentation basin is provided with a drain for discharging the treated water, a pair of side plates which are spaced left and right between the outer wall and the storage wall, and the side plate A plurality of inclined plates are provided to be inclined in an upward direction therebetween, and an upper portion of each inclined plate is provided between the storage wall and the outer wall to the upper portion of the inclined plate to prevent the water from flowing through the inclined plate while preventing the drift of the treated water. The present invention provides a sludge treatment apparatus for a sedimentation basin further comprising an upflow-type high-speed sedimentation means having a treated water discharge unit for maintaining a constant flow rate and flow rate.

According to the sludge treatment apparatus of the sedimentation basin according to the embodiment of the present invention as described above, even if there is a fluctuation in the inflow of the treated water, the density of suspended solids contained in the discharged water discharged from the sedimentation basin can be kept low, so the water purification efficiency of the sedimentation basin is increased. In addition, it has an effect of increasing, and can effectively collect fine sludge that is feared to rise again, thereby increasing the effect of removing sludge.

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Furthermore, in the case where the upflow high speed sedimentation means is further provided, vortices are formed in the upstream to form large particles of flocs, the effective settling area and residence time are significantly increased, the surface load ratio is reduced, and the occurrence of short circuit is reduced. Effluent water has a stable discharge effect.

Hereinafter, through the preferred embodiment of the accompanying drawings, the function, configuration and operation of the sludge treatment apparatus of the present invention the sedimentation basin will be described in detail.

However, the same reference numerals are used for the same components.

Figure 1 is a schematic side cross-sectional view of the sludge treatment apparatus of the sedimentation basin according to an embodiment of the present invention, Figure 2 is a schematic side cross-sectional view of various multi-rectification plates employed in the sludge treatment apparatus of the sedimentation basin according to an embodiment of the present invention. .

In the sludge treatment apparatus 10 of the sedimentation basin according to an embodiment of the present invention, the multi-rectification is spaced apart from the inner wall surface 101 of the sedimentation basin in which the treated water introduced into the sedimentation basin 100 through the agglomeration basin or aeration tank is formed. The plate 1 is installed.

In this case, the multi-commutation plate 1 is provided with a first porous plate 11 having a plurality of first through holes 111 through which the treated water passes, and spaced apart from the rear of the first porous plate 11 and having a first passage. A second porous plate 12 having a second passage hole 121 which does not overlap with the hole 111 in front and rear is provided. The first porous plate 11 and the second porous plate 12 are vertically disposed. The plurality of spacers 13 are formed to be parallel to be spaced apart at regular intervals.

The first through hole 111 formed in the first porous plate 11 and the second through hole 121 formed in the second porous plate 12 are formed so as not to overlap each other, so that the first through hole ( The treated water that has passed horizontally through 111 is configured to pass through the second through hole 121 after rising or falling. In other words, the treated water flowing from the inlet does not pass directly through the multi-rectifier plate 1 horizontally, but must pass through the curved path by a bypass so that the flow rate is significantly lowered.

As a result, as a large amount of treated water flows into the inlet at a time, the precipitated sludge is not pushed to the rear of the sedimentation basin by the flow of the treated water, and the fine sludge that has settled does not rise again.

In addition, as the treated water introduced from the inlet collides with the first porous plate 11 provided in the multiple rectifying plate 1, a local turbulent flow is generated between the internal shear of the settling basin 100 and the multiple rectifying plate 1. . Due to such turbulent flow, fine sludge contained in the treated water (hereinafter, uniformly used as a floating material) increases the chance of contact with each other, thus allowing the floating materials to be absorbed or adsorbed to each other to form a sludge mass smoothly. . As the sludge mass grows large, it sinks relatively quickly to the bottom of the sedimentation basin so that the concentration of suspended solids in the rear of the sedimentation basin can be greatly reduced.

On the other hand, the first and second porous plates constituting the multi-rectification plate (1) is a plate shape, the first and second through holes (111, 121) formed in the first and second porous plates (11, 12), respectively It may have a shape of any one or more of circular, polygonal, oval.

The width of the multi-rectifier plate 1 is formed in a length corresponding to the width of the sedimentation basin 100, the upper and lower lengths of the multi-rectification plate is capable of operating the sludge collection means provided to collect the sludge mass accumulated on the bottom of the sedimentation basin It is formed to the height.

In addition, the multiple rectifying plate (1) may be installed so that a plurality of overlapping back and forth in order to slow down the flow rate of the treated water to more effectively the flocculation of the sludge. This is especially the case when large amounts of treated water are introduced through the inlets, and local turbulent flows occur more smoothly, thereby increasing the chance of precipitation of suspended solids by flocculation.

Hereinafter, with reference to the accompanying drawings will be described the operation of the sludge treatment apparatus of the sedimentation basin according to an embodiment of the present invention.

Figure 3 (a) shows the degree of distribution of suspended solids distributed in the sedimentation basin in the absence of a multi-rectifier plate through the computational flow analysis. Here, the inlet is formed in the upper left, the outlet is provided with a discharge water in the upper right.

When the multi-rectifier plate is not provided, it can be seen that the density of suspended solids contained in the treated water increases from the upper layer to the lower layer of the sedimentation basin. This represents sludge settled by gravity. On the other hand, it can be seen that the suspended solids are distributed evenly in the middle layer from the front of the settling basin (left of FIG. 3 (a)) to the rear (right of FIG. 3 (a)). In addition, the upper layer has a relatively low density of suspended solids, but the density of suspended mulles is slightly increased at the rear of the sedimentation basin, which is caused by the resuscitation of some suspended solids that have settled to the bottom as the treated water is discharged through the outlet.

On the other hand, Figure 3 (b) shows the degree of the distribution of suspended solids on the sedimentation basin equipped with a multi-rectangle plate through the computational flow analysis. It can be seen that the density of suspended solids in the space in front of the inlet to the multiple rectifiers is considerably high, because the suspended solids are adsorbed by the local turbulent flow generated when the treated water collides with the multiple rectifiers. Therefore, it appears to be high density.

Meanwhile, after the treated water passes through the multi-rectifier plate, it can be seen that the suspended solids are maintained at a certain concentration and the concentration of the suspended solids is lowered while passing through the rear of the sedimentation basin. Therefore, it is confirmed that the efficiency of the sedimentation basin is increased as the concentration of suspended solids in the treated water collected at the outlet is significantly lowered.

On the other hand, Figure 4 measures the concentration of suspended solids in the discharge water according to the fluctuation of the inflow of the treated water over time.

Figure 4 (a) is a case of a sedimentation basin without a multi-rectification plate, (b) is a case of a sedimentation basin is provided with a multi-rectification plate.

The horizontal axis shows the passage of time in units of time, and the x mark shows the flow rate increased or decreased when the proper flow rate was set to 1 according to the design of the sedimentation basin.

At this time, both the sedimentation basin without the multi-rectifier plate and the sedimentation basin with the multi-rectification plate were subjected to the fluctuation of the inflow rate of the same treated water. In addition, the upper and lower widths of the first and second through holes of the multi-commutator plate were 15 cm, and the separation distance of the first and second porous plates was 15 cm.

First, in FIG. 4A, it can be seen that in the absence of the multi-rectifier plate, the content of suspended solids in the discharge water is changed according to the increase or decrease of the inflow amount of the treated water. This is estimated to increase as the suspended solids reclaimed from the bottom of the sedimentation basin.

On the other hand, in Figure 4 (b), when the multi-rectifier plate is installed, it can be seen that the content of suspended solids in the discharge water is low regardless of the increase or decrease of the inflow of the treated water. In particular, it can be seen that the density of suspended solids contained in the effluent is hardly changed even in the period from 7 hours to 12 hours when the inflow increases rapidly.

Thus, when the multi-rectifier plate is installed, it is confirmed that high-quality treated water having a relatively low content of suspended solids can be collected in spite of the variation of the inflow of the treated water.

On the other hand, Figure 5 is a schematic plan sectional view of the sludge collecting means employed in the sludge treatment apparatus of the sedimentation basin shown in Figure 1, Figure 6 is a schematic enlarged plan sectional view of the main portion, Figure 7 is a schematic exploded perspective view.

Sludge collecting means (2) is moved horizontally from the bottom of the sedimentation basin 100 is to suction and discharge the precipitated sludge to the outside.

Specifically, the sludge collecting means 2 has a suction pipe 21 installed horizontally along the center of the bottom of the sedimentation basin, and the suction pipe 21 while generating suction pressure in the suction pipe 21 while being connected to the tip of the suction pipe 21. One end is connected to the front end of the suction pipe 21 and the other end is provided on the outside of the sedimentation basin 100 so as to discharge the sludge guided to the outside, and installed at the end of the connection pipe 221. And a suction pump 222 configured to generate a suction pressure, and a discharge pipe 223 connected to the suction pump 222 to discharge the sludge sucked to the outside.

Further, the suction pipe is sucked into the bottom of the sedimentation basin at the suction pressure generated by the suction pressure forming unit 22 while being horizontally moved along the suction pipe 21 while being connected to the end of the suction pipe 21. Induced by (21), the lower end portion is provided with a plurality of cart movement roller 231, sludge suction cart 23, and the bogie drive unit for horizontally reciprocating the sludge suction cart 23 along the suction pipe 21 24 is provided.

At this time, the sludge suction cart 23 is provided with a suction member which is movable on the bottom surface of the sedimentation basin by a trolley moving roller and is provided with a plurality of suction ports so as to absorb the precipitated sludge, which is substantially perpendicular to the suction pipe. In addition, the balance driving unit 24 has a drive motor provided on one side of the sedimentation basin, a wire connected to the sludge suction truck and the drive motor and pulled by the drive motor to reciprocate the suction suction truck horizontally from the bottom, and the wire. It includes a pulley installed on the inner wall surface of the settling basin to change the direction of.

More specific configuration and operation of the sludge suction cart 23 and the balance driving unit 24 is in accordance with the description of the registered patent No. 844502 previously filed by the present applicant.

As the sludge suction cart 23 is moved along the bottom surface of the sedimentation basin, the sludge is sucked, and the sedimentation basin does not need to be separately installed, but at the same time, the sludge is smoothly removed even when the sludge is easily resuspended.

In addition, Figure 8 is an exploded view showing the inclined plate and the treated water discharge portion provided in the upflow high-speed settling means shown in Figure 7, Figure 9 is a use state diagram showing the operating state of the upflow high-speed settling means shown in FIG.

The upstream high speed sedimentation means 3 includes a storage wall 31 installed inside the sedimentation basin 100 and spaced apart from the outer wall 102 of the sedimentation basin 100 having a drainage port, and the outer wall 102 and the storage wall 31. Including a pair of side plates 32 are spaced apart from side to side between the) and a plurality of inclined plate 33 is installed to be inclined in the upper direction between the side plate (32).

only. The configuration and operation except for the following description are as described in Korean Patent Registration No. 888992.

The side plate 32 further includes a plurality of inlet holes 321 formed along the bottom thereof. The inlet hole 321 passes through the flocculation paper so that the treated water introduced into the sedimentation basin 100 flows horizontally toward the inclined plate 33 from the outside of the side plate 32 to the inside through the storage wall 31.

The inclined plate 33 further includes a plurality of vortex forming plates 331 vertically spaced apart from each other on the front surface thereof, and a plurality of lifting bumps 332 horizontally attached to the upper rear surface thereof and spaced vertically apart from each other. Include.

In this case, the vortex forming plate 331 is divided into a plurality of upflows rising along the bottom of the inclined plate 33 into a horizontal flow through the inlet hole 321 and the divided upflow to meet the inclined plate An upward flow forms a vortex on the front surface of the 33, and the rising prevention jaw 332 serves to prevent the vortex from being rapidly raised due to the rotation phenomenon in which the vortex is rotated.

In addition, the upflow-type high-speed sedimentation means 3 further includes a treatment water discharge part 34 installed between the storage wall 31 and the outer wall 102 to the upper portion of the inclined plate 33. The treatment water discharge part 34 serves to keep the flow rate and flow rate of the treatment water constant while preventing the drift phenomenon in which the treatment water passing through the inclined plate 33 is deflected to one side.

The treatment water discharge part 34 having a role as described above is an inverted triangular collecting trough of which an upper part is installed in series between the storage wall 31 and the outer wall 102 to the upper part of the inclined plate 33 ( 341, a water collecting hole 341a formed at a lower end of the water collecting trough 341, and a water trap disposed between the water collecting trough 341 and the drain.

At this time, the collecting trough 341 collects the treated water flowing through the inclined plate 33 through the collecting through hole 341a at a constant level and then overflows to prevent the drifting of the treated water while maintaining a constant flow rate and flow rate. Play a role.

The water collecting hole 341a is to allow the treated water rising through the inclined plate 33 to enter the collecting trough 341, and the drain trap serves to guide the treated water overflowed from the collecting trough 341 to the drain. Do it.

The treated water, which is separated along with the slant plate 33 while the sludge is separated, passes through the upper end of the slant plate 33 and is collected through the water collecting hole 341a at the bottom of the water collecting trough 341. After flowing into the inside of the collecting trough 341 is collected.

The treated water collected into the collecting trough 341 is filled with the collecting trough 341, and then overflows the collecting trough 341 and is discharged to the drain trap. The treated water discharged to the drain trap is discharged to the outside of the sedimentation basin through the drain hole.

As the treated water is collected into the collecting trough 341 as described above, the treated water is prevented from drift and the treated water is discharged at a uniform flow rate and flow rate.

1 is a schematic side cross-sectional view of a sludge treating apparatus of a sedimentation basin according to an embodiment of the present invention.

Figure 2 is a schematic side cross-sectional view of a variety of multi-rectification plate employed in the sludge treatment apparatus of the sedimentation basin according to an embodiment of the present invention.

Figure 3 shows the results of the computational flow analysis of the concentration distribution of suspended solids in the sedimentation basin,

(a) is a diagram showing the concentration of suspended solids in the sedimentation basin without a multi-rectifier plate, (b) is a diagram showing the concentration of suspended solids in the sedimentation basin is equipped with a multi-rectifier plate.

4 is a graph showing the concentration of suspended solids contained in the discharge water according to the treatment water inflow fluctuations, (a) is a graph showing the concentration of suspended solids in the sedimentation basin without a multi-rectifier plate, (b) is provided with a multi-rectifier plate Graph showing suspended solids concentration in the settling basin.

5 is a schematic sectional view of the sludge collecting means employed in the sludge treatment apparatus of the sedimentation basin shown in FIG.

6 is a schematic enlarged cross-sectional plan view of the main portion of the sludge collecting means shown in FIG.

Figure 7 is a schematic exploded perspective view of the upstream high-speed sedimentation means employed in the sludge treatment apparatus of the sedimentation basin shown in FIG.

8 is an exploded view showing the inclined plate and the treated water discharge portion provided in the upflow high-speed sedimentation means shown in FIG.

Figure 9 is a use state showing the operating state of the upflow fast settling means shown in FIG.

Explanation of symbols on the main parts of the drawings

100: sedimentation basin

101: inner wall surface 102: outer wall

1: Multiple rectifier plate

11: first porous plate 111: first through hole 12: second porous plate

121: second passage hole 13: spacer member

2: sludge collection means

21: suction pipe 22: suction pressure forming unit 221: connection pipe

222: suction pump 223: discharge pipe

23: Oni suction truck 231: Balance moving roller 24: Balance driving unit

3: upflow high speed sedimentation means

31 storage wall 32 side plate 321 inlet hole

33: inclined plate 331: vortex forming plate 332: rise prevention jaw

34: treated water discharge part 341: water collecting trough 341a: water collecting hole

Claims (5)

delete delete delete The first porous plate 11 formed with a plurality of first through holes 111 through which the treated water passes, and is spaced apart from the rear of the first porous plate 11 and do not overlap with the first through holes 111. The second rectifying plate 12 is provided with a second porous plate 12 having a second through-hole 121 is formed is spaced apart from the inner wall surface provided with an inlet for the treatment water flow into the sedimentation basin, Sludge collecting means (2) for horizontally moving from the bottom of the sedimentation basin 100 and suction and discharge the precipitated sludge is further provided, The suction pipe (2) has a suction pipe (21) installed horizontally along the center of the bottom of the sedimentation basin, and the suction pipe while generating a suction pressure in the suction pipe 21 in a state connected to the tip of the suction pipe (21) Suction pressure forming unit 22 for discharging the sludge guided to 21 and the suction pipe forming unit 22 while being horizontally moved along the suction tube 21 in a state connected to the end of the suction tube 21. The sludge suctioned on the bottom of the sedimentation basin by the suction pressure generated by the suction pipe 21 is guided to the suction pipe 21, and the lower portion is provided with a sludge suction truck 23 having a plurality of trolley moving rollers 231, and the sludge suction truck. Sludge treatment apparatus of the sedimentation basin characterized in that it comprises a bogie drive unit (24) for reciprocating horizontally along the suction pipe (21) (23). In claim 4, A pair of storage walls 31 installed inside the sedimentation basin spaced apart from an outer wall of the sedimentation basin 100 having a drain hole for discharging the treated water, and a pair spaced left and right between the outer wall and the storage wall 31. Between the side plate 32 and the side plate 32 is provided with a plurality of inclined plate 33 to be inclined in the upper direction, The flow rate and flow rate of the treated water are installed in the upper portion of the inclined plate 33 between the storage wall 31 and the outer wall to prevent the drift of the treated water that has passed through the inclined plate 33. Sludge treatment apparatus of the sedimentation basin, characterized in that it further comprises an upflow-type high-speed sedimentation means (3) which is provided with a treated water discharge portion (34) to keep it constant.

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