KR100429465B1 - A sequencing bath reactor type - Google Patents

Abstract

The present invention relates to a continuous batch type wastewater treatment apparatus, and in particular, various media are installed in a plurality of tanks, and a discharge device for separating only the symbolic water according to the water level and discharging the wastewater to the outside is installed to purify the wastewater. It is possible to achieve more efficiently, and relates to a continuous batch wastewater treatment apparatus that can easily fractionate and discharge only purified symbol water.

Continuous batch type wastewater treatment apparatus according to the present invention comprises a plurality of reaction tanks are formed in the inlet and outlet to form a predetermined space for the washing action of the wastewater; A media installed inside the reactor to allow microorganisms to be attached and grow; A stirrer forcing the waste water to react with the microorganisms grown by attaching the waste water introduced into the reactor to the media; Including a discharge device installed in the discharge port of the reaction tank and the discharge height is arbitrarily changed under the surface of the waste water so as to discharge only the symbolic water to the outside through the discharge port to prevent the loss of sludge, suspended matter, microorganisms after the cleaning action Characterized in that made.

Description

Continuous Batch Wastewater Treatment System {A sequencing bath reactor type}

The present invention relates to a continuous batch type wastewater treatment apparatus, and in particular, various media are installed in a plurality of tanks, and a discharge device for separating only the symbolic water according to the water level and discharging the wastewater to the outside is installed to purify the wastewater. It is possible to achieve more efficiently, and relates to a continuous batch wastewater treatment apparatus that can easily fractionate and discharge only purified symbol water.

In general, wastewater treatment equipment generates wastes as a by-product as humans promote industrialization. Especially, when wastewater is discharged into rivers, it promotes river pollution, and thus seriously affects drinking water. It is a device to purify fatal wastewater such as paper wastewater containing a large amount of domestic wastewater, high molecular organic compounds, and heavy chemical industry wastewater that discharges toxic organic compounds.

In Korea, the amount of wastewater discharged per day is about 20 million㎥, of which 63% of domestic wastewater accounts for about 63% of the wastewater.

In consideration of this environment, the government has continuously installed environmental foundation facilities centering on large cities to treat wastewater. However, at the end of 1995, Korea's sewage treatment rate was only 45%, which is much lower than that of developed countries. Considering this, considering the sewage treatment rate, it will be lower.

Considering this reality, we are making huge investments to improve the sewage treatment rate by more than 10% and the sewerage pipe penetration rate by 5% .However, we are proceeding as planned due to the cost, time required for installation, increase of pollutant emissions and local environment in Korea. The situation is not improving the water quality.

In addition, most sewage treatment facilities will be installed or planned to be centered around the city, so it would be difficult to expect a dramatic improvement in water quality if it does not treat wastewater from small and medium cities, farming and fishing villages, and small-scale livestock farms. .

Therefore, measures should be taken to treat wastewater at the source site, and the concept of source treatment should be introduced, but the development of treatment technology suitable for these areas is insufficient.

For this reason, there is a need for a wastewater treatment device that biologically purifies wastewater, such as factory wastewater or domestic sewage, by aerobic microorganisms. As one of the methods for purifying wastewater, media and internal media are attached to media. Many methods are used to treat waste water by decomposing organic matter contained in waste water with microorganisms.

The wastewater purification treatment effect of the above method depends on the media, that is, the contact medium to which microorganisms are attached and propagated. The conventional media is a synthetic media or synthetic resin in which various contact points are formed as synthetic resins. Mainly used is formed.

However, the conventional media has not been able to achieve effective purification because the media is not diverse, and thus, various types of microorganisms are attached and grown to improve the efficiency of removing organic matter and nitrogen, and also to remove hardly decomposable substances and toxic substances. In addition to alleviating the impact on the impact, there is a need for a media to improve the sedimentation effect by improving the amount of adherent microorganisms and reducing the amount of suspended microorganisms to achieve more effective wastewater purification.

In addition, since the above purification operation is performed continuously, the height of the outlet can be arbitrarily adjusted according to the state of the activated sludge and the sedimentation characteristics, thereby preventing sludge from accumulating inside the discharge device during operation and preventing scum from leaking during discharge. The necessity of the discharge device to prevent the microorganisms in the reactor to be discharged, and to discharge only the supernatant water stably.

The present invention has been made in order to solve the above problems of the prior art, by installing a variety of media inside the reactor, the discharge device is installed that can adjust the height of the outlet, more various kinds of microorganisms are attached to, and grow inside the reactor It is an object of the present invention to provide a continuous batch wastewater treatment apparatus which can prevent sludge accumulation, prevent scum from leaking out, and purify wastewater more effectively.

1 is a block diagram showing a continuous batch wastewater treatment apparatus according to the present invention,

Figure 2 is a block diagram showing a discharge device of a continuous batch wastewater treatment apparatus according to the present invention,

3 is a plan view and a side cross-sectional view showing a hopper of a continuous batch wastewater treatment apparatus according to the present invention;

Figure 4 is a block diagram showing the discharge device of the continuous batch type wastewater treatment apparatus according to the present invention,

5 is a perspective view showing a sludge blanket of the continuous batch wastewater treatment apparatus according to the present invention,

Figure 6 is a block diagram showing the drive means of the continuous batch wastewater treatment apparatus according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: first reactor 12: first media

14: first stirrer 20: first discharge device

21: discharge pipe 22: ejector

23: corrugated pipe 24: sludge blanket

24a: filter part 24b: guide part

25 drive means 25a handle

25b: Main gear 25c: Follower gear

26: guide 27: air nozzle

28: hopper 29: connecting member

29a: projection 30: second reactor

32: second media 34: second stirrer

40: second discharge device 50: third reactor

52: third media 54: third stirrer

60: third discharge device

Continuous batch type wastewater treatment apparatus according to the present invention for solving the above problems is formed with a plurality of reaction tank to form a predetermined space in which the suction port and the discharge port is formed to perform the cleaning action of the waste water; A media installed inside the reactor to allow microorganisms to be attached and grow; A stirrer forcing the waste water to react with the microorganisms grown by attaching the waste water introduced into the reactor to the media; Including a discharge device installed in the discharge port of the reaction tank and the discharge height is arbitrarily changed under the surface of the waste water so as to discharge only the symbolic water to the outside through the discharge port to prevent the loss of sludge, suspended matter, microorganisms after the cleaning action Characterized in that made.

Hereinafter, with reference to the accompanying drawings an embodiment of a continuous batch wastewater treatment apparatus according to the present invention will be described in detail.

1 is a block diagram showing a continuous batch wastewater treatment apparatus according to the present invention.

Continuous batch type wastewater treatment apparatus according to the present invention is installed in the three reaction tank (10,30,50) and the reaction tank (10,30,50) is formed in the inlet and outlet for the waste water is supplied, the microorganisms are attached, grow Media (12, 32, 52) to be able to, and the agitator (14, 34, 54) installed in the reaction tank (10, 30, 50) to allow the flow of wastewater flows to be purified by microorganisms and It is installed on the discharge port side of the reaction vessel is configured to include a discharge device (20, 40, 60) is arbitrarily adjusted under the water surface of the waste water according to the state of the activated sludge and the sedimentation characteristics.

The reactor 10, 30, 50 is formed in the form of a tank that can form a predetermined space inlet (L ₁ , L ₃ , L ₅ ) is formed on one side of the upper surface so that waste water can be supplied into the reactor And outlets L ₂ , L ₄ , L at the lower side of the other side so as to be flowed by the agitators 14, 34, 54, reacted while passing through the media 12, 32, and 52, and discharged to the outside. ₆ ) is formed.

The media 12, 32, and 52 are used in aeration tanks provided in washing towers, waste water treatment apparatuses, and combined purification tanks for purifying livestock, industrial, domestic wastewater, etc., also known as media (hereinafter, 'media'). As a medium to attach and grow microorganisms in), it is divided into three forms.

The first media 12 according to the present invention is designed to protect the stirrer 14 installed in the reactor 10 and to obtain the best reaction effect. The median media 12 may be formed by using materials such as granular activated carbon, bio ceramics, and waste tire processed materials. It consists of a porous tube consisting of a plurality of cells to achieve.

In addition, the cell is filled with fines only in a portion of each inside so that the microorganism flows inside the cell to perform the cleaning action.

In addition, the second media 32 is made of a hexahedral frame for installing ciliated fiber media such as a ring race, and the third media 52 is made of a relatively small and light object in the form of a waste tire and a sponge. It is present in the fluidized bed within 50.

Thus, the wastewater introduced through the suction port L ₁ of the first reactor 10 is first washed by the microorganisms propagated inside the first media 12, and moved to the second reactor 30. The secondary washing is performed by the microorganisms propagating in the second media 32, and the third washing is performed by the microorganisms that enter the third reactor 50 and adhere to and grow in the third media 52 present in the fluidized bed. To be discharged to the outside.

The stirrers 14, 34, and 54 are installed on one side of the reaction tanks 10, 30, and 50, and the waste water introduced therein is forced to flow in the reaction tanks 10, 30, and 50. It consists of a motor and a fan to be cleaned by the microorganisms while making contact with.

In this way, each of the reaction tank (10, 30, 50), and after the cleaning action is performed to discharge the waste water (L ₂ , L ₄ , respectively) of the reaction tank (10, 30, 50) to discharge the waste water to the reaction tank or the outside of the next stage L ₆ ) is provided with a discharge device (20, 40, 60).

Figure 2 is a block diagram showing a discharge device of a continuous batch wastewater treatment apparatus according to the present invention.

Here, the discharge device 20 is installed in the discharge port (L ₂ ) of the reaction tank 10, a hole is formed in the reaction tank 10 to the upper side and the lower side, the waste water made a cleaning action flows to the upper side and discharged to the outside A discharge pipe 21 to be installed, an ejector 22 installed inside the discharge pipe 21 to forcibly discharge waste water in the reaction tank 10, and a hole in the discharge pipe 21 to be installed or activated sludge. The height is arbitrarily adjusted according to the characteristics, and the height adjusting means is configured to discharge only waste water while preventing leakage of microorganisms or sludge.

The discharge pipe (21) end is inserted into the reaction tank 10, the upper and lower holes are formed, the upper hole is installed height adjustment means, the lower hole is installed funnel-shaped hopper 28 is discharge pipe ( The sludge flowing into 21) is discharged downward.

Figure 3 is a plan view and side cross-sectional view of the hopper of the continuous batch wastewater treatment apparatus according to the present invention.

The hopper 28 is formed in a funnel shape with a hole formed in the lower side, the inner wall is formed with a vortex-shaped guide rib inclined in the lower direction, even if a large amount of sludge is discharged downward along the vortex-shaped guide rib 28a Since it is discharged while rotating, clogging can be prevented.

In addition, the sludge deposited in the hopper 28 is stacked on one side of the hopper 28 to more effectively prevent the blockage of the hole formed in the lower end of the hopper 28 in one side of the hopper 28 in the downward direction An air nozzle 27 for spraying is installed.

The height adjusting means is a corrugated pipe 23 is installed in the upper hole of the discharge pipe 21, the corrugated pipe 23 to shrink or relax, and the corrugated pipe 23 can be contracted or relaxed while sliding in the vertical direction while the flow in the left and right directions is suppressed The sludge blanc cat 24 and the guide 26 installed on the side of the 23 and the upper end of the corrugated pipe 23 and installed so as to linearly move upward and downward to contract and relax the corrugated pipe 23. And a connecting member 29 interposed between the sludge blanket and the upper end of the corrugated pipe to form an inflow space for waste water, and a driving means 25 for inducing a linear movement of the sludge blanket 24.

The corrugated pipe 23 is made of a flexible material formed of a plurality of corrugations continuously, and is installed to contract and relax while sliding along the guide.

Figure 4 is a perspective view of the sludge blanket of the continuous batch wastewater treatment apparatus according to the present invention.

The sludge blanket 24 is formed with a spiral filter 24a, the upper guide portion 24b is formed in the upper direction at the upper end of the filter 24a, the upper end of the corrugated pipe 23 is the filter 24a It is bonded to the inner wall, the guide portion 24b is connected to the drive means 25 is installed to move in the vertical direction.

In addition, the connecting member 29 is interposed between the inner wall of the filter portion (24a) and the upper end of the corrugated pipe (23), while a certain space is formed between the filter portion (24a) and the corrugated pipe (23), the corrugated pipe (23) (24a) A passage through which wastewater flows is secured by being supported by the inner wall.

5 is a perspective view showing a connection member of the continuous batch wastewater treatment apparatus according to the present invention.

The connecting member 29 is formed in a ring shape and a plurality of protrusions 29a are formed on the upper surface thereof and are joined to the inner wall of the sludge blanket 24 so that the lower end is joined to the upper end of the corrugated pipe 23, and the upper end of the protrusion is the sludge blanket. It is fixed to the inner wall of the filter part 24a of 24. As shown in FIG.

Here, the sludge blanket 24 is covered with the upper end of the corrugated pipe 23, the lower end of the filter part 24a of the sludge blanket 24 is installed so that the lower end than the upper end of the corrugated pipe 23 corrugated pipe 23 Since the copper wire of the wastewater flowing into the upper portion of the wastewater flows in a convex streamline downward, it is filtered by the filtering portion 24a of the sludge blanket 24, so that only the symbol water washed only with the wastewater flows into the top of the corrugated pipe 23. do.

Figure 6 is a block diagram showing the drive means of the continuous batch wastewater treatment apparatus according to the present invention.

The driving means 25 is a driven gear 25c installed on one side of a portion where the guide portion 24b of the sludge blanket 24 protrudes out of the reaction tank 10, and the driven gear 25c and the bevel gear system. The main gear 25b is geared and the handle 25a is installed on the rotating shaft of the main gear 25b and is driven by a user's operation.

Since the sludge blanket 24 is linearly moved by the driving means 25 in the vertical direction, the corrugated pipe 23 can be contracted and relaxed.

Looking at the operation of the present invention configured as described above are as follows.

First, when waste water is introduced through the inlet (L ₁ ) of the first reactor 10, the stirrer 14 is driven to clean the microorganisms inside the cell, which is the first media 12, while the waste water flows inside the reactor 10. The action is made, and is supplied to the inlet port L ₃ of the second reactor 30 through the outlet port L ₂ by the discharge device 20.

In the second reaction tank 30, the stirrer 34 is driven like the first reaction tank 10, and the waste water flows, so that the washing action is performed by the microorganisms of the second media 32 and discharged by the discharge device 40. The wastewater which is moved through the inlet (L ₅ ) of the third reactor (50) along the pipe (L ₄ ) and also flows by the stirrer (54) in the third reactor (50) of the third media (52) The microorganism is washed by the microorganisms and discharged to the outside along the discharge tube L ₆ by the discharge device 60.

Here, by the discharge device (20, 40, 60) installed on the discharge port side of each reaction tank (10, 30, 50), the discharge of suspended matter floating on the surface of the microorganism and waste water to the outside of the reaction tank (10, 30, 50) is prevented In order to prevent sludge buildup on the bottom of the reactor, only the symbolic water from which waste water is washed is discharged. The detailed operation is as follows.

First, when power is applied, the ejector 21 is driven so that the waste water flows into the upper end of the corrugated pipe 23. At this time, the sludge blanket 24 causes the waste water to flow in a convex copper convex downward so that floating water floats on the surface of the waste water. Is not introduced into the corrugated pipe (23).

The wastewater introduced in this way moves downward and is discharged in a horizontal direction by switching the flow direction 90 ° along the discharge pipe 21. The running direction of the wastewater is switched, but the sludge inside the wastewater is moved downward by its own weight and is hopper. Through the 28 is circulated back into the reaction vessel (10).

At this time, the sludge is prevented from accumulating on the inner wall of the hopper 28 by the guide ribs 28a formed on the hopper 28 and the air nozzles 27 installed on one side of the hopper 28 to inject air downward. .

In addition, the height of the corrugated pipe 23 can be adjusted according to the state of the activated sludge and the sedimentation characteristics of the sludge, the sludge blanket 24 is moved in the vertical direction when the drive means 25 is driven, the sludge blanket 24 Since the corrugated pipe 23, the upper end of which is joined to the inner wall of the filter part 24a, is contracted and relaxed, the height of the inlet is adjusted so that a suitable operation can be performed in accordance with the conditions of the reactor 10.

Comparing the symbol water washed by the continuous batch wastewater treatment apparatus configured and operated as described above with the symbol water generated by the washing operation according to the prior art is as follows.

First, when comparing the comparison table with regard to domestic sewage, the treatment efficiency of the continuous batch wastewater treatment system according to the prior art is 63.2% COD, 49.8% TN, 55.1% TP, 78.0% SS, whereas the continuous efficiency of the present invention COD of Batch Wastewater Treatment System showed 81.8% COD, 68.3% of TN, 67.8% of TP, and 85.0% of SS, showing the elimination of organic matter and nutrients, and the treatment performance of suspended solids more than the conventional Batch Wastewater Treatment System. Found to be high.

Table 1

The present invention Prior art Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] COD 202.5 3.9 98.1 202.5 7.4 96.3 T-N 49.8 5.1 89.8 49.8 8.9 82.1 T-P 6.5 1.7 73.8 6.5 2.3 64.6 SS 125.8 6.2 95.1 125.8 7.5 94.0

In addition, the treatment efficiency of organic matter and nutrients of the continuous batch wastewater treatment apparatus according to the present invention and the continuous batch wastewater treatment apparatus according to the prior art using the livestock wastewater as a target material is shown in Table 2.

TABLE 2

The present invention Prior art Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] COD 7507.8 1367.5 81.8 7507.8 2759.2 63.2 T-N 4256.3 1348.2 68.3 4256.3 2137.5 49.8 T-P 27.6 8.9 67.8 27.6 12.4 55.1 SS 1350 202.5 85.0 1350 297 78.0

Table 3 shows the treatment of organic matter, nutrients and suspended solids in the continuous batch wastewater treatment apparatus according to the present invention and the continuous batch wastewater treatment apparatus according to the present invention using the fishery wastewater as a target material.

TABLE 3

The present invention Prior art Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] COD 526.0 27.1 94.9 526.0 45.2 91.4 NH ₄ ⁺ -N 323.8 99.7 69.2 323.8 157.3 51.4 T-N 427.4 153.7 64.0 427.4 206.5 51.7 T-P 20.2 7.6 62.3 20.2 10.2 49.5 SS 221.8 45.7 79.4 221.8 89.2 59.8

In addition, Table 4 shows the toxic substances of the continuous batch wastewater treatment apparatus according to the present invention and the continuous batch wastewater treatment apparatus according to the prior art by using toxic substances 2,4-Dichlorophenol and Phenol, and artificial minerals containing trace minerals. This is shown by comparing the effect on the treatment efficiency.

Table 4

The present invention Prior art Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] Influent [mg / L] Effluent [mg / L] RemovalEfficiency [%] BOD 558.4 51.3 90.8 558.4 92.0 83.6 Phenol 176.6 10.7 93.9 176.6 24.4 86.1 2.4-DCP 151.9 7.3 95.2 151.9 24.5 83.9 SS - 10.2 - 29.3

Continuous batch type wastewater treatment apparatus according to the present invention is configured as described above by the media that the microorganisms can grow attached to the fixed or fluidized bed, to secure various kinds of microorganisms to improve the efficiency of removing organic matter and nitrogen, Removal of the degradable substance and the impact on the toxic substance has the advantage of obtaining a stable treated water.

In addition, a discharge device which is positioned below the surface of the water according to the state of activated sludge and the sludge sedimentation characteristics is installed on each discharge vessel discharge port to adjust the drainage height, so that the sludge builds up inside the discharge device during operation and floats during discharge. The outflow can be controlled to put the microorganisms in the reaction vessel is spilled there is an advantage that can be safely discharged only symbol water.

Claims (6)

A plurality of reaction tanks formed at a suction port and a discharge port to form a predetermined space in which waste water is washed; A media installed inside the reactor to allow microorganisms to be attached and grow; A stirrer forcing the waste water to react with the microorganisms grown by attaching the waste water introduced into the reactor to the media; Including a discharge device installed in the discharge port of the reaction tank and the discharge height is arbitrarily changed under the surface of the waste water so as to discharge only the symbolic water to the outside through the discharge port to prevent the loss of sludge, suspended matter, microorganisms after the cleaning action Continuous batch wastewater treatment device, characterized in that made. The method of claim 1, The media is installed inside the first reactor, the first media consisting of a plurality of box-shaped cells formed with a plurality of holes are connected, and the second media of the ciliary fixed perpendicular to the frame of the cube installed inside the second reactor. And a third medium formed small and lightly formed so as to flow in the waste water of the third reactor. The method of claim 1, The stirrer is a continuous batch wastewater treatment device, characterized in that consisting of a fan and a motor for forced flow of the waste water in the reactor. The method of claim 1, The discharge device is installed in the discharge port of the reaction tank, the discharge pipe formed in the upper and lower holes in the portion inserted into the reaction tank, the ejector is installed inside the discharge pipe for forced outflow of the waste water inside the reaction vessel, and the lower side of the discharge pipe Continuous batch type, characterized in that it comprises a hopper which is installed in the hole to discharge the sludge introduced into the discharge device into the reaction tank, and the height adjusting means is installed on one side of the discharge pipe to adjust the drain height arbitrarily Wastewater Treatment System. The method of claim 4, wherein The hopper is formed in a funnel shape with a hole formed at the bottom, the continuous batch wastewater treatment apparatus, characterized in that the inner wall is formed with a vortex-shaped guide rib formed inclined downward. The method of claim 4, wherein The height adjusting means is a corrugated pipe which is installed in the upper hole of the discharge pipe and contracted or relaxed, and a guide installed on the side of the corrugated pipe so that the corrugated pipe can be slidably supported in the vertical direction, connected to the upper end of the corrugated pipe, A sludge blanket installed on an upper surface of the reaction tank so as to linearly move in a direction, a connecting member interposed between the sludge blanket and an upper end of the corrugated pipe to form an inflow space for waste water, and a driving means for causing a linear motion of the sludge blanket. Continuous batch wastewater treatment device, characterized in that made.