KR100453705B1 - An apparatus and a method for treating waste water using a settling filter tank - Google Patents

Abstract

Provided are a sewage treatment apparatus and method using a sedimentation filtration tank for treating a biological process and sewage through the sedimentation tank again.

The sewage treatment apparatus includes a sedimentation filtration tank and the inside of the sewage filtration tank, and includes an aerobic tank for treating the introduced sewage with a biological treatment method, and the sewage treated by the biological treatment method is treated again through the sedimentation filtration tank and then discharged to the outside. .

The sewage treatment method may include an aeration step in which a microorganism is activated by dissolved oxygen supplied into an aerobic tank to perform biological treatment of sewage; and a sewage sedimentation tank including a sludge generated by organic matter treatment of the microorganism. Concentration step in which the sludge is introduced into the condensate; and the sludge precipitation step in which the sludge in the sewage is actively settled through the lamellar plate in the sedimentation tank through the concentration tank; and the filter material of the filtration tank disposed above the sedimentation tank Filtering filthy water while passing through the filter unit; And discharging the treated water through the discharge pipe on the filtration tank.

Therefore, according to the sewage treatment apparatus and method using the sedimentation filtration tank of the present invention, the sedimentation tank for sewage treatment is excellent in space utilization, and the sewage treatment efficiency is improved, and the installation is simplified as a simplified structure.

Description

Sewage treatment apparatus and method using sedimentation filtration tank {AN APPARATUS AND A METHOD FOR TREATING WASTE WATER USING A SETTLING FILTER TANK}

The present invention relates to a sewage treatment apparatus and method using a sedimentation filtration tank for the treatment of sewage or waste water (hereinafter referred to as 'sewage'), and more specifically, a small FRP for treating sewage less than 40 TON per day. A sewage filtration tank for sedimentation and filtration of sewage is disposed in the treatment tank, and the sewage treatment system increases sewage treatment efficiency of BOD and SS, as well as a sewage treatment apparatus using a sedimentation filtration tank that simplifies and improves space utilization. And to a method.

Generally, several methods for sewage treatment are known, and one of the representative sewage treatment methods is biological sewage treatment, that is, standard activated sludge process. Such standard activated sludge process includes sewage inflow, aeration, sludge sedimentation, and treated water discharge. By treating the sewage through the step of, the organic matter contained in the sewage is quite useful.

In the biological sewage treatment apparatus, when the treatment capacity is less than 40 TON, a sewage treatment apparatus, that is, a treatment tank is generally made of FRP material to facilitate the manufacture and construction of the sewage treatment apparatus. Since the small sewage treatment device manufactured with FRP having a treatment capacity of less than 40 TON is small, it is important to increase the sewage treatment efficiency of the sewage treatment device to minimize idle space during sewage treatment.

However, although not shown in the drawing, the small sewage treatment apparatus currently being manufactured, for example, a small sewage treatment apparatus such as a combined purification tank is usually installed in the cylindrical tube in the perpendicular direction in the longitudinal direction to separate the sedimentation-aerobic tank Since the sewage treatment is carried out, when the cylindrical cone-shaped sedimentation tank is vertically embedded in the sedimentation chamber space between the partition walls, many unnecessary spaces are left around.

Moreover, in recent years, with the strengthening of the standard of discharged water quality, in addition to the sedimentation tank in the small sewage treatment apparatus, a filtration tank must be additionally installed. However, since most sewage treatment apparatuses do not have a separate manager, such a small sewage treatment apparatus has a filtration tank. Even if it is installed, since the backwashing operation of the filtration tank to remove the contaminants (sludge) accumulated in the filtration tank is not continuously performed, the pollutants accumulated in the filtration tank have a problem of worsening the sewage treatment efficiency. There was a difficult problem.

Therefore, if a small sewage treatment apparatus that compactly settles and filters the sedimentation and filtration tanks having a sedimentation and filtration function in a compact sewage treatment apparatus is provided, the idle space of the sewage treatment apparatus is reduced, and the sewage treatment apparatus is disposed in the aerobic tank of the sewage treatment apparatus. It will be preferable because efficiency is also improved.

The present invention has been made in order to improve the various problems as described above, the object of the present invention is that by placing the precipitation filtration tank in the aerobic tank, the biological treatment water treated with the organic matter by the microorganism in the aerobic tank is discharged again through the precipitation filtration tank In addition to improving the overall BOD and SS efficiency of the sewage treatment device, in particular, it maximizes the space utilization of the sewage treatment device that treats sewage by a biological sewage treatment method, and improves the structure of the conventional sewage treatment facilities. It is to provide a sewage treatment apparatus and method using a precipitation filtration tank to simplify the installation.

1 is a perspective view showing a precipitation filtration tank according to the present invention

Figure 2 is a front structural diagram showing the internal structure of the present inventors filtration tank

Figure 3 is a schematic front view showing the sludge treatment operation of the present inventors filtration tank.

Figure 4 is a schematic front view showing another embodiment in which a plurality of the present invention settling filtration tank combined

5 shows a sewage treatment apparatus having a sedimentation filtration tank of the present invention,

(a) is a schematic diagram showing the installation of an aerobic tank in a settling filtration tank.

(b) is a schematic plan view of an aerobic tank

Explanation of symbols on the main parts of the drawings

1 .... Sedimentation Filtration Tank 1 '.... Sewage Treatment System

10 .... sludge thickener 12 .... sludge discharge line

16 .... sewage inlet 30 .... sludge settling tank

32 .... lamella plate 50 .... sludge filtration tank

52 .... Supernatant discharge pipe 70 .... Filter means

72 .... air nozzle tube 74 .... casing

76 .... Filter material 90 ....

92 .... Oxygen Supply Line

As a technical aspect for achieving the above object, the present invention, a sludge thickening tank having a discharge pipe for collecting and discharging the sludge in the incoming sewage, and is integrally connected to the upper portion inclined, and a plurality of lamellar plates are installed inside the sewage Sludge sedimentation tank for precipitating sludge in the inside, and a filter casing in which a filter material of carbon material is filled in a predetermined mesh in the inner center thereof, and a filter means in which an air injection pipe for backwashing the filter material is disposed on the lower side thereof. In the sewage treatment apparatus using a sedimentation filtration tank consisting of a sludge filtration tank for discharging, the sediment filtration tank and the sedimentation filtration tank is installed inside, consisting of an aerobic tank for treating the influent sewage in a biologically activated manner, on one side of the concentration tank Many sewage inlets for inflow of treated sewage in the aerobic tank The discharge pipe installed by partitioning the upper inside of the sludge filtration tank is drawn out to a separation tank installed at the outside of the filtration tank, and the separation tank is connected to the treated water discharge pipe connected to the outside of the aerobic tank, and the organic material by the microorganism is disposed at the lower side of the aerobic tank. An oxygen supply pipe for supplying oxygen for treatment is installed, and a sludge treatment pipe for treating precipitated sludge is connected to a lower portion of the aerobic tank, and a sewage inflow pipe is connected to an upper portion of the aerobic tank, and the water level of the sewage flowed into the aerobic tank. The present invention relates to a sewage treatment apparatus using a sedimentation filtration tank configured to be treated with a sewage water through an aerobic tank and a sedimentation filtration tank, wherein the sewage filtration tank is configured to be higher than the treated water level in the filtration tank of the sedimentation filtration tank. Sludge thickening tank equipped with discharge pipe, and connected obliquely to the upper part, It consists of a sludge settling tank equipped with a plurality of lamellar plate, and a filter casing filled with a predetermined mesh of carbon filter material in the inner center, and a sludge filtration tank having a filter means at the bottom of which is arranged an air spray pipe for backwashing. Using a sedimentation filtration tank, sewage is introduced into the concentration tank to concentrate the sludge, and lamellar plates disposed at 20-50 mm intervals in a sedimentation tank sloped at 45-70 ° with a water loading rate of 20-150 m / day. The sedimentation filtration tank includes a sludge settling step in which sludge is actively settled while passing through, and a filtration step for filtering sewage while passing a 10-50 mesh carbon filter material of the filter means with an apparent residence time of 2-20 minutes. In the sewage treatment method used, when the microorganism is activated by the dissolved oxygen supplied into the aeration tank in the concentration step The sewage from the aeration stage where biological treatment is performed is introduced, and the treated water through the biological treatment in the aerobic tank and the sludge concentration, sedimentation, and filtration in the aeration tank is separated from the discharge pipe and the separation tank installed on the sludge filtration tank. Via the treated water discharge pipe to the outside of the aerobic tank. By providing a sewage treatment method using a sedimentation filtration tank characterized in that the discharge.

Hereinafter, the structure of the sedimentation filtration tank 1 and the sewage treatment apparatus 1 'of the present invention using the same will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a precipitation filtration tank according to the present invention, Figure 2 is a front structural view showing the internal structure of the present invention, the filtration tank, Figure 3 is a schematic front view showing the sludge treatment operation of the present invention filtration tank, 4 is a schematic front view showing another embodiment in which a plurality of settling filtration tanks of the present invention are combined, and FIG. 5 is a view showing a sewage treatment apparatus having a settling filtration tank of the present invention.

1 and 2 show the sedimentation filtration tank according to the present invention as a perspective view and an internal structure diagram. The precipitation filtration tank 1 is divided into a sludge thickening tank 10, a sludge settling tank 30, and a sludge filtration tank 50. If you look at each of the components 10, 30, 50 in detail as follows, sedimentation filtration tank 1 of the present invention is a device for precipitating sludge in sewage in the conventional small sewage treatment device partition It functions as a sedimentation tank separated by means, that is, to treat sludge in sewage without treating organic matter by microorganisms.

On the other hand, as shown in Figure 1 and 2, the sludge thickening tank 10 is installed so that the sludge (S) contained in the introduced sewage introduced into the bottom is concentrated and discharged to the outside, it is smooth, The lower portion is narrower than the upper portion for the concentration of sludge.

That is, as shown in Figures 1 and 2, the sludge thickening tank 10 is preferably formed in an inverted pyramid shape having a long width at the upper end and a short width at the lower end to smoothly concentrate the sludge.

In addition, one side surface of the sludge thickening tank 10 is integrally formed with a protruding surface 14 into which a sludge discharge pipe 12 for discharging the sludge S concentrated inside is inserted, and the thickening tank 10 is integrally formed. On the upper side of the protruding surface 14), a plurality of sewage inlets 16 through which the sewage flows into the concentration tank 10 are integrally formed.

At this time, it is important that the sewage inlet 16 is located on the upper side at the entire height of the thickening tank 10, which is sludge (S) in the sewage introduced through the inlet 16 to the narrow bottom portion of the thickening tank (10). Because they are collected and concentrated, this is to avoid the spread of sludge due to the inflow of sewage.

Next, Figure 1 and Figure 2 shows the sludge settling tank 30 of the present invention filtration tank 1, such sludge settling tank 30 is a predetermined angle (A) based on a horizontal plane on the top of the thickening tank (10) It is connected to be inclined), and equipped with lamella plates 32 installed spaced at a predetermined interval (D) therein is configured to activate sludge sedimentation in the sewage.

That is, the sludge settling tank 30 should be tightly coupled integrally without leaking from the upper edge boundary of the sludge thickening tank 10, and the horizontal inclination angle A of the settling tank 30 is preferably 45-70 °. It is desirable to maintain 55-65 °.

At this time, if the inclination angle (A) of the sludge settling tank 30 is less than 45 °, as will be described in detail later, when the sewage flows through the concentration tank 10 flows to the settling tank 30 by the water level difference, The sludge does not settle smoothly because the inclination angle is too small between the lamellar plates 32 to be described later. On the contrary, if the inclination angle of the settling tank 30 is larger than 70 °, the sludge flows upward through the settling tank 30. There is a problem that the residence time of the sewage is too small to allow smooth sludge settling, and therefore it is most preferable to have an inclination angle of 55-65 °.

Next, the spacing D of the lamella plates 32 installed in the settling tank 30 is 20-50 mm, preferably 30-40 mm, most suitable, if the spacing of the lamella plates 32 is 20 mm or less, When the sewage flows through the lamellar plates 32 of the sedimentation tank 30, the sludge blocks the gap between the lamellar plates 32, and conversely, if the spacing of the lamellar plates 32 is larger than 50 mm, the sludge in the flowing sewage is constant. The sludge should be sedimented by colliding with the lamellar plate 32 installed in the settling tank 30 at an interval. Since the sludge does not collide with the lamellar plates 32 because the gap is too large, the sludge flows together with the sewage. In order to reduce the settling rate, the spacing of the lamellar plates 32 may be 30-40 mm.

Accordingly, the total size of the sedimentation tank 30 having such a constant inclination angle A and the lamellar plates 32 having a predetermined interval D installed therein has a surface loading rate of 20-150 m / day, preferably Is most preferably configured to be 80-100 m / day. In this case, if the sleep load rate is less than 20 m / day, it is not suitable because there is too little sewage treatment, and conversely, if the sleep load rate is 150 m / day or more, Due to the large amount of sludge settling, the size of the settling tank 30 should be larger than necessary, and it is not suitable as the settling tank of the small sewage treatment apparatus.

Next, Figure 1 and Figure 2 shows the sludge filtration tank 50 of the present invention, the filtration tank 1, such a sludge filtration tank 50 is integrally connected to the upper portion of the sludge settling tank 30 in a vertical direction. In the inner center, a filter means 70 is installed, and an upper side of the sludge filtration tank 50 is provided with a discharge pipe 52 for treating the partition wall 52a to discharge the treated water in which the sludge is precipitated and filtered.

That is, the sludge filtration tank 50 should be tightly coupled to the upper edge boundary of the sedimentation tank 30 without leaking, and at this time, the back washing of the filter means 70 is performed under the filter means 70 of the filtration tank 50. In order to inject air, an air nozzle pipe 72 is provided.

On the other hand, as shown in Figure 2, the filter means 70 is largely divided into a casing 74 and the filter material 76, the casing 74, although not shown in detail in the figure, the filtration tank 50 Removably fixed to the inner surface of the bolt by bolting.

In addition, the filter material 76 filled in the casing 74 is filled with a predetermined mesh (M), wherein the filter means 70 has an apparent residence time of 2-20 minutes, preferably 5-10. It is preferable to make it.

That is, if the apparent residence time of the filter means 70 is less than 2 minutes, the sewage filtration is not enough because the time for passing sewage through the filter is too short, and if the sewage retention time is 20 minutes or more, the flow of sewage is There is a problem that the amount of sewage treatment per hour of the precipitation filtration tank 1 is reduced, and it is most preferable to have a residence time of 5-10 minutes.

At this time, the filter material 76 is preferably one of sand, crystalline clay, granite, activated carbon, coke or carbon material. In the present invention, a carbon material is used, and thus the residence time In view of the material of the filter material 76 and the mesh M of the filter material 76 is most preferably formed in 10-50.

And, the lower portion of the filter means 70, the installation of the air injection pipe 72 is essential, which is treated water that precipitated rather than contaminants attached between the filter material 76 when the filter means 70 is used for a long time. In order to contaminate, it is for backwashing the filter material 76.

Next, FIG. 4 shows a composite sedimentation filtration tank 1a in which a plurality of sediment filtration tanks 1 of the present invention are coupled in parallel, and a pair of sludge settling tanks 30a and 30b are adjacent to each other in a horizontal plane 45-. It is fixed integrally while maintaining the inclination angle (A) of 70 °, lamellar plates (32a) (32b) are provided in the interior of each sludge sedimentation tank 30 at intervals of 20-50mm (D),

In addition, a pair of sludge thickening tanks 10a and 10b are connected to the lower portion of each settling tank 30, although schematically illustrated in the drawing, each of the thickening tanks 10a and 10b has a respective sludge discharge pipe 12a. 12b must be installed.

At this time, the important thing is that the filtration tank 50 mounted on the top of the settling tank (30a, 30b) is connected to one sludge filtration tank 50 is extended to be able to surround a pair of settling tank integrally, the molon filter means ( 70 is also integrally mounted inside.

Of course, the figure shows a composite sedimentation filtration tank 1a configured in parallel with a pair of concentration tanks 10, a settling tank 30, and an integrated filtration tank 50, but according to the sewage treatment amount, the sewage treatment apparatus 1 'described below. Depending on the processing capacity of the plurality of concentration tank 10 and the settling tank 30 will be possible to be configured in combination.

Next, FIG. 5 shows the sewage treatment apparatus 1 'provided with the precipitation filtration tank of the present invention.

That is, as shown in Figure 5, the sludge concentration tank 10 for collecting and discharging the sludge in the introduced sewage in the aerobic tank 90 to perform the organic matter treatment of the sewage by the microorganism, and is integrally connected to the upper portion inclined A plurality of lamellar plates 32 are installed inside the sludge settling tank 30 to settle sludge in the sewage, and a filter casing 74 in which a carbon filter material 76 is filled with a predetermined mesh in the inner center thereof. In the lower side, an air spray pipe 72 for backwashing the filter material is disposed, and a precipitation filtration tank 1 made of a sludge filtration tank 50 for discharging the treated water is inserted.

On the other hand, as shown in Figure 5a, the oxygen supply pipe 92 for supplying oxygen for treating the organic matter by the microorganism is installed in the lower side of the aerobic tank 90, the sludge precipitated in the lower portion of the aerobic tank 90 Sludge treatment pipe 94 for processing the connection is connected, the sewage inlet pipe 96 is connected to the upper portion of the aerobic tank (90).

As shown in FIG. 5, the discharge pipe 52 treated with the partition wall 52a inside the upper part of the filtration tank 50 of the precipitation filtration tank 1 is drawn out to the separation tank 52b provided at the outer side of the filtration tank 50. The separation tank 52b is connected to the treated water discharge pipe 52c which is connected to the outside of the aerobic tank 90.

At this time, it is important that as shown in Figure 5a, the water level (S1) of the sewage flowing into the aerobic tank (90) than the treated water level (S2) in the filtration tank 50 of the precipitation filtration tank (1) mounted in the aerobic tank If the sewage water level (S1) in the exhalation tank (90) is less than the water level (S2) in the filtration tank (50) of the precipitation filtration tank (1), the sewage of the exhalation tank (90) is settled by hydraulic pressure This is because it is difficult to flow to the concentration tank 10, the settling tank 30, and the filtration tank 50 through the inlet 16 of 1).

Of course, although not shown in the drawing, a pair of thickening tanks 10 and a settling tank 30 are connected in the aerobic tank 90, the composite settling filtration tank consisting of an integral filtration tank 50 mounted to pass through the upper portion thereof. It will also be possible for (1a) to be mounted therein.

The sewage treatment method using the sedimentation filtration tank of the present invention having the above configuration will be described in detail as follows, through the embodiment of the sewage treatment apparatus 1 ′ having the precipitation filtration tank 1.

As shown in FIG. 5, when sewage flows into the aerobic tank 90 through the sewage inflow pipe 96, when dissolved oxygen is supplied into the aerobic tank 90 through the oxygen supply pipe 92, the organic matter in the sewage is microorganisms. The sewage is first treated as it is removed by activation.

Next, the sewage containing sludge (S) generated by the removal of the organic matter of the microorganism of the sedimentation filtration tank (1) by water pressure by the difference between the aerobic tank level (S1) and the water level (S2) of the precipitation filtration tank (1) as described above When concentrated and precipitated in the thickening tank 10 introduced into the thickening tank 10 and formed into an inverted pyramid shape, the sludge discharge pipe 12 inserted into the inside is not shown in the drawing, but is external when the pump is connected to the pipe. Discharged.

Next, the sewage in the sewage is passed through the lamella plate 32 installed a plurality of intervals (D) of 20-50mm in the interior of the settling tank 30 inclined to the upper portion of the concentration tank 10, the sludge in the sewage Sludge sedimentation in sewage is more smoothly collided with (32), and sewage sludge treatment is performed.

That is, since the sedimentation tank 30 having the lamellar plate 32 is about 3-5 times higher in sludge settling efficiency than the general sedimentation tank, the surface load rate of the sedimentation tank can be maintained at 20-150 m / day, This eventually reduces the size of the settling tank 30, thus taking up less horizontal plane and space.

Next, the filthy water in which a large amount of sludge is settled while passing through the settling tank 30 passes through a filtration tank 50 installed on the top of the settling tank 30, that is, the filter means 70 installed inside the filtration tank 50. Since the sludge of the sewage is additionally filtered, the sludge in the sewage produced by the microorganisms in the aerobic tank 90 eventually increases the treatment efficiency of the BOD and SS while passing through the concentration tank 10, the sedimentation tank 30, and the filtration tank 50. Will be processed.

In addition, the filter material 76 in the filter means 70 of the filtration tank 50 uses a granular filter material of about 10-50 mesh, for example, sand, crystalline clay, granite. Activated carbon, coke, or carbon may be used, but in the present invention, a carbon-based filter material 76 is used.

In addition, the filter unit 70 in the filtration tank 50 by using the air injection pipe 72 installed in the filtration tank 50 below the filter means 70 intermittently for about 10-30 minutes 1-2 times a day. When spraying the air at a high pressure from the lower side, the back washing operation is performed to efficiently remove the contaminants adhering between the filter material 76, thus preventing the sludge from clogging. The officer 72 is not shown in the figure, but can be made automatically without a separate administrator through the control panel.

At this time, the filter means 70 has an apparent residence time of the sewage is about 2-20 minutes, preferably about 5-10 minutes, and the reason has been described in the foregoing configuration.

In addition, the sedimentation filtration tank 1 is a sewage treatment facility made of FRP pipe, for example, when the separate sedimentation tank and the filtration tank are separately installed in the combined purification tank, the space utilization is high, and the sewage treatment efficiency is considerably high.

At this time, as shown in Figure 4, the concentration tank 10 and the settling tank 30 are connected in parallel, the composite precipitation filtration tank (1a) consisting of a filtration tank 50 integrally thereon into the aerobic tank 90 If it precipitates, the sewage treatment efficiency of the wastewater treatment apparatus 1 'of this invention will improve extremely.

Next, the treated water flowing upward through the filter means 70 of the filtration tank 50 waits in the separation tank 52b through the discharge pipe 52 treated with the partition 52a at the upper portion thereof, and then through the discharge pipe 52C, the aeration tank ( 90) It is discharged to the outside.

Hereinafter, embodiments of the present invention will be described.

(Example 1)

As shown in Fig. 1, the width W of the filtration tank 50 of the precipitation filtration tank 1 was 500 mm, the length L was formed to 700 mm, and the concentration tank of the precipitation filtration tank 1 ( 10), the height of each of the settling tank 30 and the filtration tank 50 is formed by H10 is 600 mm, H20 is 900 mm, H30 is 600 mm, and inside the sedimentation tank 30, 1.5 mm thick lamellar plates 32 are formed. It was arrange | positioned at the space | interval D of 35 mm, and the inclination angle A of the said precipitation tank 30 was formed at 60 degrees.

Next, as shown in FIG. 2, the total packed layer thickness of the filter material 76 filled in the casing 74 of the filter means 70 disposed in the filtration tank 50 was 400 mm. The sedimentation filtration tank 1 with which it had was mounted in the aerobic tank 90 of length 2500mm and the width 1250mm, and sewage was flowed into the said aerobic tank 90 in the quantity of 20 TON / day.

As a result, when the BOD concentration of sewage in the aeration tank 90 flowing into the precipitation filtration tank 1 was 15 ppm and SS 30 ppm, the effluent water passed through the precipitation filtration tank 1 was 10 ppm BSS and 8 ppm SS, respectively. It was confirmed that the improvement.

(Example 2)

In the sewage treatment apparatus 1 'having the same scale as in Example 1, when the BOD concentration of the sewage introduced into the aerobic tank 90 is 12 ppm and the SS is 15 ppm, the result of treating 20 TON / day sewage The BOD concentration of water was reduced to 8 ppm and SS to 6 ppm, respectively.

(Comparative Example 1)

BOD of 15 ppm and SS of 30 ppm Sewage was passed at 20 TON / day using a cylindrical gravity settling tank having a diameter of 700 mm, similar to that of Example 1, and the BOD of the treated water was 14 ppm. , SS is 20 ppm, the improvement was very small, it can be seen that compared with the embodiments according to the present invention, it can be seen that the BOD and SS after the sewage treatment is considerably high, and the effluent inflow is 10 TON / day Even when it was lowered, it was found that the sewage treatment apparatus 1 'of the present invention had good BOD and SS treatment efficiency.

As described above, according to the sewage treatment apparatus and method using the precipitation filtration tank of the present invention, the sewage filtration tank is disposed in the aerobic tank, and the biological treatment water subjected to organic matter treatment by the microorganisms in the aerobic tank is discharged again through the sediment filtration tank, and thus the sewage treatment apparatus. In addition to improving the overall BOD and SS efficiency of the process, and in particular, to maximize the space utilization of the sewage treatment apparatus for treating sewage by the biological sewage treatment method, and to simplify the installation compared to the existing multi-level sewage treatment facilities It is to provide an excellent effect to facilitate.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. Those of ordinary skill will want to know easily.

Claims (13)

delete delete delete delete delete delete delete Sludge thickening tank 10 having a discharge pipe 14 for collecting and discharging the sludge in the introduced sewage, and sludge is integrally connected to the upper portion, and a plurality of lamella plates 32 are installed therein to settle the sludge in the sewage. A filter means in which a settling tank 30 and a filter casing 74 in which a carbon filter material 76 is filled with a predetermined mesh at the inner center thereof are mounted, and an air injection pipe 72 for backwashing the filter material is disposed at a lower side thereof. In the sewage treatment apparatus using the sedimentation filtration tank (1) consisting of a sludge filtration tank (50) having a 70 to discharge the filtered treated water, The precipitation filtration tank (1) and the precipitation filtration tank (1) is installed inside, consisting of an aerobic tank (90) for treating the influent sewage in a biologically activated manner, One side of the concentration tank 10 is formed with a plurality of sewage inlets 16 for the inflow of sewage treated in the aerobic tank, the discharge pipe 52 is installed to be treated with a partition wall (52a) to the upper inside of the sludge filtration tank (50) Is drawn out to the separation tank 52b installed outside the filtration tank, the separation tank 52b is connected to the treated water discharge pipe 52c connected to the outside of the aerobic tank, An oxygen supply pipe 92 for supplying oxygen for organic matter treatment by microorganisms is installed in the lower side of the aerobic tank 90, and a sludge treatment tube 94 for treating the sludge deposited therein is provided below the aerobic tank 90. The sewage inflow pipe 96 is connected to the upper portion of the aerobic tank 90, and the sewage water level S1 introduced into the aerobic tank 90 is a treated water level in the filtration tank 50 of the sedimentation filtration tank S2. The sewage treatment apparatus using a sedimentation filtration tank, characterized in that the sewage is configured to be treated higher than through the aerobic tank and sedimentation filtration tank. delete delete delete A sludge thickening tank 10 having a sludge discharge pipe 14, a sludge settling tank 30 inclinedly connected to an upper portion thereof, and having a plurality of lamellar plates 32 installed therein, and a filter material 76 made of carbon in the center of the sludge. A filter casing 74 filled with a predetermined mesh is mounted, and a sediment filtration tank 1 composed of a sludge filtration tank 50 having a filter means 70 on which an air spray pipe 72 for backwashing is disposed is mounted on a lower side thereof. Condensation step of concentrating the sludge by introducing sewage into the concentration tank 10, and having a water loading rate of 20-150 m / day, disposed at 20-50 mm intervals D in the settling tank 30 inclined at 45-70 °. The sludge sedimentation step in which the sludge is actively settled as the sewage passes through the lamella plates 32, and the carbon filter material 76 of the 10-50 mesh of the filter means 70 has an apparent residence time of 2-20 minutes. Sewage treatment using a sedimentation filtration tank comprising a filtration step of filtering the sewage while passing through In the method, In the concentration step, the sewage introduced into the aerobic tank 90 is introduced with sewage after the aeration stage in which biological treatment is performed while the microorganism is activated by the dissolved oxygen supplied into the aerobic tank. The sludge concentrated, precipitated, and filtered water is passed through the treated water discharge pipe (52c) to the outside of the aeration tank (90) via the discharge pipe (52) and the separation tank (52b) installed on the sludge filtration tank (50). Sewage treatment method using sedimentation filtration tank, characterized in that the discharge delete