KR20080029237A - Waste-water sedimentation processing apparatus having vertical-feeding decanter - Google Patents

Abstract

A supernatant vertical transfer type wastewater settling apparatus is provided to discharge simultaneously the supernatant to the outside by sucking up supernatant formed by surface tension generated between air and the water surface formed by wastewater flown into a settling tank, and perform removal of waste sludge and discharge of supernatant at a constant speed. In a wastewater settling apparatus comprising a scraper(11) fixed to a rotary shaft to remove waste sludge within a cylindrical settling tank(10) having an inclined surface formed on a bottom part thereof, a supernatant vertical transfer type wastewater settling apparatus comprises: a supernatant withdrawing unit(20) installed such that supernatant formed in an upper part of wastewater flown into the settling tank is vertically transferred and withdrawn by surface tension; a wastewater inflow part(30) installed to flow wastewater containing waste sludge into the settling tank; a fixed quantity transfer unit(40) for adjusting a transfer quantity of wastewater flown into the settling tank through the wastewater inflow part; and a waste sludge discharge part(50) formed on the inclined surface of the settling tank to discharge waste sludge settled on a bottom part of the settling tank. The supernatant withdrawing unit includes supernatant storage tanks(21), a plurality of withdrawing pipes(22), and a supernatant discharge pipe(23). The wastewater inflow part includes an inflow pipe(31) and an inflow port(32). The fixed quantity transfer unit includes a metering pump(41). The waste sludge discharge part includes a discharge pipe(51) and a discharge port(52).

Description

Wastewater Sedimentation Processing Apparatus Having Vertical-feeding Decanter}

1 is a cross-sectional view showing the configuration of the present invention.

FIG. 2 is a perspective view illustrating main parts of the main part of FIG. 1; FIG.

3 is a sectional view showing the main parts of a blow-out pipe of the present invention;

Figure 4 is a block diagram showing the operation of the present invention.

Figure 5 is a cross-sectional view showing a sediment treatment apparatus equipped with a conventional wear.

※ Explanation of codes for main parts of drawing

10: sedimentation tank 11: scraper

12: axis of rotation 20: symbol number extraction means

21: blowout pipe 22: symbolic water storage tank

23: symbolic water discharge pipe

30: waste water inlet 31: inlet pipe

32: inlet 40: fixed quantity transfer means

41: metering pump 50: waste sludge discharge part

51 outlet pipe 52 outlet

The present invention relates to a symbolic water vertical transfer type wastewater sedimentation treatment apparatus, and more particularly, sucks and discharges the symbolic water finely formed by the surface tension generated between the water surface formed by the wastewater flowing into the sedimentation tank and the air. The present invention relates to a symbolic vertical feed wastewater sedimentation treatment system for removing waste sludge and discharging symbolic water at a constant speed.

The water treatment process is a process of converting contaminated substances in water into substances stabilized by microorganisms or chemical oxidation and reduction reactions, and is a technique of stabilizing waste water properties, organic matter, and nutrients in various ways.

Separation of supernatant water and sediment in the water treatment process as described above tends to deteriorate the treated water quality due to complex treatment process or difficult separation. The core of wastewater treatment is effective separation of solids and symbol water by impact or mechanical precipitation. In order to solve this problem, the water treatment process is generally a method of forcibly conveying the symbol water by a pump, a method of separating symbol water by a floating mechanism, a forced discharge method by the cyphon principle, Recently, a method of hydraulically moving up and down has been developed.

However, the method of forcibly transferring the symbol water by the pump has a problem in that sedimented waste sludge is simultaneously transferred or a scum of water is discharged at the same time. The sludge injected during the aeration process in the pipe was discharged at the same time, so that the sludge was contained in the initial discharge water.

In addition, the forced discharging method based on the cyphon principle has to be operated in various ways according to the inflow amount or the state of microorganisms because it is discharged from a fixed point, and it is difficult to control the discharge amount in response to the discharge of the device. In this case, the initial efficiency is high, but expensive production costs and excessive power costs at the time of operation is a problem, it is operated by a variety of operating mechanisms, there is a high risk of failure and difficult maintenance.

Due to such a low efficiency and expensive and large structure device is difficult to induce a proper effect, the conventional sedimentation treatment device that has a simple structure by installing a weir inside the sedimentation tank and has a simple structure and can take out highly efficient symbol water And a conventional sedimentation treatment apparatus equipped with ware is shown in FIG. 5 to provide a detailed description of the configuration and operation thereof.

As shown in Figure 5, the inclined surface is formed on the lower portion of the cylindrical settling tank 100 is provided with a V-shaped scraper 110 connected to the rotating shaft 120 on the inclined surface, and the upper portion of the settling tank 100 The ware 200 is fixed to and connected to the raw water pipe 130 for introducing waste water, and formed around the settling tank 100 at a horizontal height with the ware 200 to form the upper portion of the ware 200. The symbol water discharge portion 300 to be taken out and transported, and the scraper 110 provided in the lower portion of the sedimentation tank 100 is rotated to leave the waste sludge settled on the inclined surface and discharged to the outside Consists of the discharge port 400 formed in the lower settling tank

When waste water is introduced into the sedimentation tank 100 where the sewage water is stored and settled by gravity through the raw water outlet 130 connected to the weir 200, the density separated into the sedimentation tank 100 is lowered. The waste water is moved to the lower part of the settling tank 100 by the difference between the symbol water and the density of the waste water.

Through this, the symbol water moves to the upper part of the settling tank 100 and the weir 200. The weir 200 reduces the occurrence of the vortex generated by the density difference between the symbolic water and the waste water. Therefore, the symbol water and the waste water are not mixed, and the symbol water separated into the upper portion of the settling tank 100 and the wear 200 is dropped into the symbol water discharge part 300 to the outside of the settling tank 100. The water is discharged.

Then, the waste sludge that is settled in the lower portion of the settling tank 100 is deposited on the inclined surface formed in the lower settling tank by gravity, the scraper 110 rotates around the rotating shaft 120 to sweep the inclined surface Waste sludge is discharged to the outside through the discharge port 400.

However, in the case of having a cylindrical ware as described above, the sewage water is simply precipitated by gravity, so that the sludge is not condensed well, and the sedimentation efficiency of the sludge is lowered. The problem that the sedimentation efficiency is lowered and a relatively light scum rises to the surface of the symbolic water and is discharged together with the symbolic water outlet.

Accordingly, in Korean Patent No. 378135 'High Efficiency Sedimentation Tank', the structure of the weir is formed to have an inclined surface having a lower diameter and the rotating plate is provided to be spaced apart from the lower part of the weir so that the incoming raw water is horizontally settled. It is disclosed that it is configured to prevent the bias, Korean Patent No. 620102 'float removal device of the settling battery' is configured to remove the floating material to rotate in parallel with the water surface of the symbol water in the upper part of the settling tank The structure which removes the floating float on the water surface of was disclosed.

However, when raw water is introduced into the ware as described above, the water quality of the symbolic water flowing out due to the instability of the sludge layer is not good because the raw water is not completely removed, and the sludge layer is partially biased. There was a problem that the sedimentation into the V-shape has a limit of improving sedimentation efficiency.

In addition, when air is introduced by the drop during discharge of the symbolic water, algae are generated in the discharge part, and a separate device and operation cost for the removal are caused, and the symbolic water layer is rotated due to the removal of suspended solids, resulting in unstable sludge. There was a problem that the water quality of the symbol water deteriorated due to mixing with the layers.

Therefore, the present invention was devised to solve the conventional problems as described above, by sucking the symbolic water finely formed by the surface tension generated between the water and the surface formed by the waste water flowing into the sedimentation tank outside It is an object of the present invention to provide a symbolic vertical feedwater sewage treatment system which removes waste sludge and discharges the symbolic water at a constant speed.

In addition, another object of the present invention is to ensure that the sedimentation is made by maintaining a stabilized state while preventing the generation of vortex of the incoming wastewater.

In addition, another object of the present invention is to ensure that the suspended matter is contained in the surface of the symbol water discharged to be discharged.

In order to achieve the above object, the present invention provides a wastewater sedimentation treatment apparatus having a scraper fixed to a rotating shaft to remove waste sludge into a cylindrical sedimentation tank having an inclined surface formed thereon, the upper side of the wastewater introduced into the sedimentation tank. Symbol water extraction means installed in the symbol water formed in the vertical conveyed by the surface tension; A waste water inlet provided to allow waste water including waste sludge to flow into the settling tank; A quantitative transfer means for controlling a transfer amount of the wastewater introduced through the wastewater inlet; Waste sludge discharge portion formed on the inclined surface of the settling tank to discharge the waste sludge deposited to the lower; Characterized in that it comprises a.

In addition, the symbol water extraction means is installed in the upper part of the settling tank symbol water storage tank for storing the vertically conveyed symbol water, and the surface of the waste water flowing into the settling tank while being in vertical communication with the lower surface of the symbol water storage tank It characterized in that it comprises a plurality of take-out tube is formed in contact with.

In addition, the waste water inlet is characterized in that it consists of an inlet formed in the settling tank so that the inlet pipe is installed, and the inlet pipe is connected to the settling tank.

In addition, the metering means is characterized in that the metering pump is installed at the end of the inlet to adjust the amount of waste water flowing into the inlet.

In addition, the inlet is characterized in that formed on the inclined surface of the lower settling tank.

In addition, the take-out water storage tank is characterized in that it further comprises a symbol water discharge pipe connected to the side so that the discharge of the symbol water to the outside.

Thus, with reference to the accompanying drawings will be described in detail for the preferred embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the structure of this invention, and FIG. 2 is a principal part perspective view which shows the principal part of FIG.

As shown in Figure 1 and 2, the present invention sedimented waste water sedimentation is provided with a scraper (11) fixed to the rotating shaft to settle down the sludge sedimentation settled into the cylindrical sedimentation tank (10) having a slope in the lower portion is fixed A treatment apparatus comprising: symbol water extracting means (20) which is installed so that the symbol water separated into the upper side of the waste water introduced into the settling tank (10) is vertically conveyed by the surface tension with air and is extracted; A waste water inlet 30 provided to introduce waste water including waste sludge into the settling tank 10; A quantitative transfer means (40) for controlling a transfer amount of the wastewater introduced through the wastewater inlet (30); Waste sludge discharge portion 50 is formed on the inclined surface of the settling tank 10 to discharge the waste sludge deposited in the lower portion; It is configured to include.

The sedimentation tank 10 is formed to have an inclined surface having a cylindrical shape in which the upper part and the lower part are opened, and the waste sludge discharge part 50 is connected to the opened lower part and the waste water inflowing the waste water. The inlet part 30 is connected to one side, and the sewage water is sedimented while being stored so that the symbolic water layer is separated from the upper side and the waste sludge layer is separated from the lower side.

The inclined surface of the settling tank 10 is provided with a scraper 11 is formed in a V-shape so as to face the inclined surface, the scraper 11 and the rotating shaft 12 is installed through the central axis of the settling tank 10 and Is connected to sweep the inclined surface of the sedimentation tank 10 in accordance with the rotation of the rotary shaft 12, according to the sewage sludge is sedimented on the inclined surface of the sedimentation tank is separated from the waste sludge discharged waste sludge 50 To facilitate the discharge to the outside.

The symbolic water extracting means 20 is a symbolic water storage tank 22 and a lower portion of the symbolic water storage tank 22 formed to have a space for storing the symbolic water flowing while covering the top of the settling tank 10 and sealed Being connected is composed of a plurality of outlet pipe 21 in contact with the water surface of the symbol water layer of the settling tank (10).

The blowout pipe 21 is in communication with the symbolic water storage tank 22, and is a thin tube formed to protrude perpendicularly to the lower surface of the symbolic water storage tank 22. It is formed on the lower surface of the symbol water storage tank 22 is inserted into the inner upper portion of the settling tank (10).

The outlet pipe 21 sucks a thin surface of the upper surface of the symbolic water layer by surface tension while coming into contact with the symbolic water layer positioned at the upper portion of the settling tank 10 to flow into the symbolic water storage tank 22. will be.

Here, a symbol water discharge pipe 23 for discharging the symbol water flowing through the discharge pipe 21 to the outside is formed on the side of the symbol water storage tank 22, the symbol water discharge pipe 23 is at least one It is preferable that the above is provided to smoothly discharge the symbol water.

The waste water inlet 30 is composed of an inlet pipe 31 and the inlet 32, the inlet pipe 31 is a pipe for transporting the waste water from the outside of the settling tank 10, the inlet 32 Is formed in the settling tank 10 to be connected to the inlet tube 31 in an airtight state so that the waste water transported to the inlet pipe 31 passes through the inlet 32 and flows into the settling tank 10. will be. In addition, the inlet 32 is formed on the inclined surface of the settling tank 10 so that the waste water flows in from the lower portion of the settling tank to fill the upper portion.

The quantitative transfer means 40 is to be formed at one end of the inlet pipe 31, to control the amount of waste water introduced into the sedimentation tank 10, the present invention is conveyed as a characteristic embodiment Quantitative pump 41 was applied to quantitatively transport and control wastewater, and it is also desirable to apply other means to control the amount of wastewater transported.

In addition, the quantitative transfer means 40 is installed at one end of the inlet pipe 31 to adjust the inflow of waste water, it is also preferably installed in the inlet 32 and between both ends of the inlet pipe 31 It is also desirable to be installed in the operation.

The waste sludge discharge unit 50 is composed of a discharge pipe 51 and the discharge port 52, the discharge pipe 51 is connected to the discharge port 52 formed in the lower center of the settling tank 10, the Waste sludge separated by the rotation of the scraper 11 is introduced into the discharge pipe 51 through the discharge port 52 and discharged to the outside of the settling tank 10.

3 is a sectional view showing the main parts of a blowout tube of the present invention.

As shown in FIG. 3, the outlet pipe 21 is vertically connected to the lower surface of the symbolic water storage tank 22 to come into contact with the water surface of the symbolic water layer in which a lower end is separated into an upper portion of the settling tank 10.

Even in the symbolic water layer, a high-quality symbolic water layer forming a thin film is formed on the water surface, and the water surface of the symbol water layer is formed by the surface tension formed between the air and the water while the blowout pipe 21 is in contact with the water surface. It is transported to the upper portion along the stored in the symbol water storage tank 22.

And. The inlet pipe 31 has a fixed quantity transfer means 40 is installed so that the amount of wastewater equal to the amount of waste sludge discharged through the inflow amount and the discharge port 52, the symbol water flowing into the symbol water storage tank 22 is It is to be introduced into the settling tank (10).

4 is a configuration diagram showing the operation of the present invention will be described as follows.

As shown in FIG. 4, the wastewater flowing into the sedimentation tank 10 is filled from the lower portion of the sedimentation tank 10 to be filled from the bottom to the upper portion. By sedimentation is made to be deposited to the lower portion of the settling tank (10).

At this time. Waste water is introduced from the lower part of the sedimentation tank 10 to the upper part of the sedimentation tank 10 to prevent the generation of vortices due to the inflow of waste water, and the waste sludge is sedimented and the waste sludge layer is also filled from the lower part to the upper part. The waste sludge layer is formed in a flat plate shape by being spread evenly horizontally without being centered in the center.

That is, due to the formation of the waste sludge layer which is not biased due to the inflow of wastewater and the formation of the waste sludge layer, the symbol water layer is prevented from being mixed with the symbol water layer separated to the top, and the water surface of the symbol water layer is stabilized. By maintaining the extraction of the symbol water through the blowout pipe is to be made smoothly.

In addition, the waste sludge deposited by a scraper mounted on the lower portion of the rotating shaft penetrating the central axis of the settling tank 10 and sweeping the inclined surface of the settling tank is separated from the inclined surface to be discharged to the outside through the discharge pipe.

In addition, the surface of the supernatant layer that maintains a stabilized state is that the rotating scraper is operated at a low speed, so that the influence transmitted by the rotation of the scraper is insignificant to maintain a stabilized state.

Therefore, the present invention provides a symbol water storage tank 22 in which a plurality of blowout pipes 21 are formed perpendicularly to the lower surface on the upper side of the settling tank 10 having the scraper 11 therein, and the settling tank The waste water inlet 30 is formed on the inclined surface formed at the lower portion so that the waste sludge layer is spread evenly without the occurrence of vortices to be formed in a flat shape, and the symbol water is vertically conveyed through the blowout pipe 21 to be a high quality symbol water. At the same time, the occurrence of algae is blocked in the process of obtaining symbolic water.

In addition, the inlet pipe 31 constituting the wastewater inlet 30 is provided with a quantitative transfer means 40 which is operated with a power calculated to quantitatively transfer the wastewater to the discharge of the supernatant water through the wastewater sedimentation treatment apparatus. It will be done smoothly and with continuous efficiency.

As described above, the present invention includes a plurality of discharge pipes connected vertically to the lower portion of the symbol water storage tank installed at the upper part of the sedimentation tank so that the symbol water separated into the upper part of the sedimentation tank by the surface tension is vertically transferred. By including the quantitative transfer means so that the inflow of the waste water introduced into the control by the calculated power, the symbol water formed thinly on the water surface by the discharge pipe provided vertically to the surface tension to obtain a good symbol water It has the advantage that the outflow efficiency of symbol water is increased.

In addition, the present invention is to prevent the vortex generation of the incoming wastewater and to settle the waste sludge in a stable state so that the inlet for the wastewater is formed in the lower portion of the sedimentation tank, so that the waste water is filled from the lower portion of the sedimentation tank to a constant ascending rate The waste sludge layer is uniformly formed to reduce the occurrence of vortices due to the inflow, and the sludge is spread evenly horizontally while the incoming waste water is stable, and the sedimentation in the form of disk is made in the waste sludge layer to improve the sedimentation efficiency. You can expect.

In addition, the present invention by installing a symbol water discharge pipe on the side of the symbol water storage tank so that the floating of the symbol water is contained on the surface of the symbol water to be discharged, the symbol water is vertically transported through the blowout pipe While rising to the surface of the water through the symbol water discharge pipe only the symbol water of the lower surface of the symbol water is discharged is easy to discharge the high-quality symbol water and at the same time do not fall in the process of discharge of the symbol water, As the inflow is blocked, the occurrence of algae is prevented at the source.

Claims (6)

In the wastewater sedimentation treatment apparatus provided with a scraper (11) fixed to the rotating shaft to remove the waste sludge into the cylindrical settling tank 10, the slope is formed in the bottom, Symbol water extraction means 20 installed in the symbol water formed on the upper side of the waste water introduced into the sedimentation tank 10 to be vertically conveyed by surface tension; A waste water inlet 30 provided to introduce waste water including waste sludge into the settling tank 10; A quantitative transfer means (40) for controlling a transfer amount of the wastewater introduced through the wastewater inlet (30); Waste sludge discharge portion 50 is formed on the inclined surface of the settling tank 10 to discharge the waste sludge deposited in the lower portion; Symbolic water vertical transfer wastewater sedimentation treatment device characterized in that it comprises a. The method of claim 1, The symbolic water extracting means 20, And a symbol water storage tank 21 installed at an upper portion of the settling tank 10 to store symbol water conveyed vertically; A plurality of discharge pipes 22 are formed in contact with the surface of the waste water flowing into the sedimentation tank 10 while being in vertical communication with the lower surface of the symbolic water storage tank 21, Symbolic water vertical transfer wastewater sedimentation treatment device comprising a. The method of claim 2, The waste water inlet 30, Inlet pipe 31 and the fixed quantity transfer means 40 is installed on one side, Inlet 32 is formed in the settling tank 10 so that the inlet pipe 31 is connected to the settling tank 10, Symbolic water vertical transfer wastewater sedimentation treatment device, characterized in that the configuration. The method of claim 3, wherein The quantitative transfer means 40, Symbolic water vertical transfer type sewage water treatment apparatus, characterized in that consisting of a fixed-quantity pump 41 is installed at the end of the inlet (32) to control the amount of waste water flowing into the inlet (32). The method according to any one of claims 2 to 4, The inlet 32, Symbolic water vertical transfer type wastewater sedimentation treatment device, characterized in that formed on the inclined surface of the lower settling tank (10). The method of claim 5, The withdrawal water storage tank 21, Waste water sedimentation treatment device, characterized in that further comprises a symbol water discharge pipe 23 is connected to the side so that discharge of the symbol water to the outside.

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