KR100910547B1 - Apparatus for purifying waste water - Google Patents

Abstract

A wastewater purification device is provided to improve process efficiency of highly concentrated wastewater such as livestock excretions, digestive fluid effluent, food effluent and reclaimed place effluent etc. A wastewater purification device includes the followings: a housing(10); a first reactor(20) in which waste water is flowed through a first reaction space formed in an inner side, and discharging the wastewater with the air and microorganisms; a second reactor(40) having a second reaction space which is formed on an upper side of the first reactor, and mixing the air and the microorganisms with the wastewater flowed from the first reactor separately in the second reaction space; and a circulation induction part guiding the wastewater to be circulated in the second reaction space.

Description

Wastewater purifier {apparatus for purifying waste water}

The present invention relates to a wastewater purification apparatus, and more particularly, to a wastewater purification apparatus capable of increasing the treatment efficiency of high concentration wastewater, such as livestock waste, digestive fluid wastewater, food wastewater, and landfill wastewater.

Generally, pollutants in sewage water are mainly composed of organic matter and nutrients nitrogen and phosphorus.

Therefore, various attempts have been made to develop an apparatus for purifying wastewater by removing nitrogen and phosphorus.

For example, in the conventional biological nitrogen and phosphorus removal process, an aerobic reactor (or aeration tank) for denitrification and overingestion of phosphorus and anoxic reactor and phosphorus for denitrification reaction Various reactors were included, including anaerobic reactors for release.

Among them, the aerobic reactor removes BOD and COD substances from raw waste water by using microorganisms using organic carbon as a nutrient source, and causes organic and ammonia nitrogen to be oxidized to nitrate nitrogen through the nitrite stage. Of course, the air supplied must be well mixed with the wastewater and microorganisms.

Therefore, the aerobic reactor is provided with an air diffuser (Air diffuser) to supply air into the reactor.

However, when the wastewater to be purified is high concentration wastewater, the oxygen transfer rate is lowered. Therefore, in order to overcome this problem, in order to increase the capacity of the aerobic reactor and to increase the number of installations of the aeration device or to increase the amount of oxygen, a micro bubble acid device is used. Was used.

However, due to the burden of increasing the capacity of such aeration tank or increasing dissolved oxygen, the site purchase cost, construction cost and power costs have increased.

In addition, since the reaction tank forms a single mixing device, the agitation by air is low, the reaction rate is lowered, and there is a problem in that the decomposition ability of organic matters is lowered.

In order to solve the above problems, the present invention is to provide a wastewater purification apparatus that can increase the treatment efficiency of high concentration wastewater, such as livestock manure, digestive wastewater, food wastewater and landfill wastewater.

Another technical problem to be achieved by the present invention is to provide a wastewater purification apparatus that can reduce the required costs such as site purchase costs, construction costs by reducing the capacity of the reactor.

In order to achieve the above technical problem, the present invention comprises a housing constituting the body; A first reactor provided at the bottom of the housing and configured to discharge the wastewater from the outside into the first reaction space formed therein and to be mixed with air and microorganisms; It is provided in a multi-layer on the upper side of the first reactor, each independently has a second reaction space, sewage of sludge by allowing the wastewater flowing from the first reactor to be repeatedly mixed with air and microorganisms separately in the second reaction space. A second reactor to be purified while being prevented; And it is provided in the second reaction space provides a waste water purification apparatus comprising a circulating induction portion to guide the waste water flowing from the lower side to circulate in the second reaction space.

Here, the circulation induction part is provided in a pair below the second reaction space, each of which is provided inclined upwardly to both sides to move the incoming wastewater upward to both sides of the second reaction space to increase the turning force of the wastewater. This is preferred.

The second reactor is hermetically formed to form the second reaction space therein, and an upper portion thereof is formed to correspond to each other with downward inclined surfaces inclined downward to both sides along the width direction, and the lower portion corresponds to the downward inclined surface. It is preferably formed as an upwardly inclined surface inclined upward to both sides along the width direction.

In addition, a discharge port is formed in a predetermined width along a longitudinal direction of each of the downwardly inclined surfaces to discharge the wastewater upwardly, and each of the upwardly inclined surfaces may discharge the wastewater discharged from the outlet into the second reaction space. It is preferable that the inlet of the shape corresponding to the is formed.

In addition, the second reactor is hermetically formed to form the second reaction space therein, and preferably has a hexagonal cross section in the longitudinal direction.

In addition, it is preferable that the first reactor extends in the longitudinal direction of the housing, and both ends penetrate the housing so that the first reaction space communicates with the outside, and a plurality of the first reactors are installed in the width direction of the housing.

In addition, the first reactor is provided in the longitudinal direction of the first reaction space, the air supply unit for discharging the air upwards to allow the wastewater outside the housing to flow into the inside of the first reaction space by the upward air flow Is preferred.

The effect of the wastewater purification apparatus according to the present invention is as follows.

First, since the second reactor has a reaction space partitioned independently, wastewater, air, and organic matter are repeatedly mixed in multiple stages, thereby increasing agitation strength and maximizing decomposition rate of organic matter per unit volume.

Second, the circulating induction part is provided inside the second reactor to increase the turning force of the waste water, thereby maximizing the strength of the mixing of the waste water, the air and the organic matter, and increasing the oxygen transfer efficiency and organic decomposition efficiency.

Third, as described above, the mixing strength of waste water, air, and organic matters is increased, the oxygen transfer efficiency and the decomposition efficiency of organic matters are improved, and the decomposition rate of organic matters per unit volume is maximized, thereby reducing the volume of the reaction tank. This cost can also be reduced.

Fourth, the circulating induction part is provided inside the second reactor to allow the waste water to circulate in the reaction space to prevent precipitation of the sludge and the microbial mixture, thereby improving the mixing efficiency.

Fifth, since the second reactor is made independently, it is easy to install and maintain, the volume of the structure can be changed according to the size of the installation space, and workability can be improved.

With reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above technical problem will be described.

1 is a perspective view showing a wastewater purification apparatus according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line AA of Figure 1, Figure 3 is a cross-sectional view taken along the line BB of Figure 1, Figure 4 is an embodiment of the present invention 5 is an exploded perspective view illustrating a wastewater purification apparatus according to an embodiment of the present invention, and FIG. 5 is a partially cutaway perspective view of a second reactor of the wastewater purification apparatus according to an embodiment of the present invention.

As shown in Figures 1 to 5, the waste water purification apparatus is preferably made of a housing 10, the first reactor 20, the second reactor 40 and the circulation induction section (50). Here, the wastewater purification apparatus may be provided inside the reservoir 100 in which the wastewater is accommodated. The housing 10 forms a body, and the first reactor 20 is a bottom portion of the housing 10. It is preferably provided in. The first reactor 20 is formed to extend in the longitudinal direction of the housing 10 so that both ends thereof communicate with the outside by passing through the housing 10, respectively, and through this, the first reactor 20. Wastewater is allowed to flow into the interior). In addition, the second reactor 40 may be provided in multiple layers on the upper side of the first reactor 20, in which the second reactor 40 preferably has a reaction space independently. It is preferable that the inside of the first reactor 20 and the second reactor 40 and each of the stacked second reactors 40 are connected to each other in the vertical direction. Through this, the wastewater introduced into the first reactor 20 is moved upward through the inside of each of the second reactors 40, which are provided in multiple layers, and is individually and repeatedly mixed with air and microorganisms so that the degrading force is increased. Can be improved. Moreover, the circulation induction part 50 is preferably provided in pairs inside the second reactor 40. In this case, the circulation induction part 50 is preferably provided to be inclined upwardly to both sides. Accordingly, the wastewater introduced to the lower side is guided by the circulation induction unit 50 and is upwardly moved to both sides, thereby increasing the turning force, thereby maximizing the strength of the mixture, and increasing the transfer efficiency of oxygen and decomposition of organic matter. In addition, precipitation of sludge can be prevented.

Here, the wastewater may be defined to include high concentration wastewater, such as livestock waste, digestive fluid wastewater, food wastewater, and landfill wastewater.

In addition, the water storage tank 100 may be defined to include an aerobic tank, aeration tank or intermittent aeration tank in which waste water is accommodated.

In addition, the wastewater purification apparatus is not limited to or installed in the water tank (especially, aeration tank lacking capacity) in which the wastewater is accommodated, and the wastewater purification apparatus may be installed alone.

In detail, the housing 10 forms the body of the wastewater purification device, but is not particularly limited in shape, but may preferably be formed in the shape of a hexahedron.

In addition, the bottom of the housing 10 is preferably provided with a first reactor 20, wherein the first reactor 20 is formed such that the first reaction space 21 is formed inside.

In addition, the first reactor 20 is formed to extend in the longitudinal direction of the housing 10, both ends are preferably provided to penetrate the housing 10, respectively, through this, the first reaction space 21 Is in communication with the outside of the housing 10.

Therefore, the wastewater accommodated in the reservoir 100 may naturally flow into or flow out of the first reaction space 21.

Preferably, the first reactor 20 is provided in plural along the width direction of the housing 10. In this case, the first reactors 20 may be provided such that side surfaces thereof are in close contact with each other.

In addition, it is preferable that an air supply unit 30 is provided in an inner space of each of the first reactors 20, that is, the first reaction space 21.

Here, the air supply unit 30 is preferably provided in the longitudinal direction of the first reaction space 21, it may be made of a pipe to form a flow path through which air can move.

In addition, a blower (not shown) may be connected to the air supply unit 30 to supply air to the inside of the air supply unit 30.

In addition, a supply hole 31 may be formed in the air supply part 30 positioned inside the first reaction space 21 at predetermined intervals along the longitudinal direction of the first reaction space 21.

In this case, the supply hole 31 may be generated by a drill or the like, and thus, the supply hole 31 may be formed to a certain diameter rather than a minute size.

Accordingly, the air supplied from the supply hole 31 may be coarse bubble air, through which the blockage of the supply hole 31 may be prevented.

Here, the air supply unit 30 may be further provided with an air purge valve (not shown) in the direction opposite to the air supply direction.

In addition, by operating the air purge valve periodically (for example, 1 to 2 months), the foreign matter inside the air supply unit 30 is removed to prevent the supply hole 31 from being clogged by foreign matters. Can be.

On the other hand, the surrounding wastewater is continuously introduced into the first reactor 20 by the rising airflow formed as the air discharged through the supply hole 31 rises. The outlet 23 is preferably formed at the top of the first reactor 20 so that it can be.

At this time, the upper shape of the first reactor 20 is not limited to a specific shape, but preferably has a downward slope 25 inclined downward to both sides in the width direction of the first reactor 20, respectively. Can be formed.

Therefore, the first reactors 20 provided on the lower side of the housing 10 form a shape in which the upper part has an acid and a valley as a whole.

The outlet 23 is formed on each of the downwardly inclined surfaces 25, and is preferably formed in a predetermined width along the longitudinal direction of the downwardly inclined surface 25.

In this way, the first waste water in the reaction space 21 is first mixed with the air and organic matter, and is moved upward by the upward air flow is discharged through the outlet 23.

In this case, the first reactor 20 has one single space, that is, the first reaction space 21 in which the inside is integrally broken, so that the impact load at the inlet of the first reaction space 21 becomes stronger. Can be.

The supply hole 31 may be further provided with a nozzle, it is also possible to increase the air flow of the air by allowing the air to be injected instead of simply discharged from the nozzle.

On the other hand, the second reactor 40 is preferably provided on the upper side of the first reactor (20).

In this case, the second reactor 40 is preferably sealed to form a second reaction space 41 therein.

In addition, the second reactor 40 is preferably provided in a multi-layer, it is preferable that a plurality of each of the housing 10 is provided in the longitudinal direction, the width direction and the height direction.

Therefore, each of the second reactors 40 independently has the second reaction space 41.

In addition, the lower portion of the second reactor 40 is preferably formed to have an upwardly inclined surface 42 inclined upwardly to both sides in the width direction.

Here, the upwardly inclined surface 42 is preferably formed to correspond to the width of the downwardly inclined surface 25 formed on the first reactor 20.

Through this, the second reactor 40 may be stably positioned between the upper sides of the first reactor 20, that is, the valleys formed by the downward slope 25. In addition, the second reactors 40 may also be provided such that side surfaces are in close contact with each other.

In addition, each of the upwardly inclined surface 42 is preferably formed with an inlet 43 in a predetermined width along the longitudinal direction of the upwardly inclined surface 42, wherein the inlet 43 is the first reactor 20. It is preferably formed to correspond to the outlet 23 formed in the upper portion of the.

Through this, waste water discharged to the outlet 23 after being primarily mixed with air and organics in the first reaction space 21 is introduced into the second reaction space 41 through the inlet 43. In the second reaction space 41, a second mixing process is performed again.

In addition, an upper portion of the second reactor 40 may be formed to have a downwardly inclined surface 45 inclined downward to both sides in the width direction, and in this case, the downwardly inclined surface 45 may be formed in the first reactor 20. It is preferable that it is formed to correspond to the downwardly inclined surface 25 formed in the upper portion of.

In addition, the downwardly inclined surface 45, the outlet 46 is preferably formed in a shape corresponding to the outlet 23 formed on the upper portion of the first reactor (20).

In addition, the second reactor 40 is preferably formed to form a hexagonal cross-section in the longitudinal direction, more preferably may form a regular hexagon, in this case, the stacked second reactors 40 are honeycomb as a whole It can take the form of a structure.

Of course, the shape of the second reactor 40 is not necessarily limited to the above-described form. That is, the second reactor 40 may have a rhombus cross section in the longitudinal direction.

As such, the second reactor 40 may be stacked on top of the first reactor 20 in a multi-layered intersection, thereby minimizing dead space.

Therefore, as a whole, the size of the wastewater purification apparatus can be reduced, thereby reducing the volume of the structure, and in particular, in the sewage field, not only can the land area be minimized, but also the construction cost and construction time can be saved.

In addition, the first reactor 20 and the second reactor 40 may be fixed by a separate fixing device (not shown), where the fixing device is a fastening element such as a bolt and a nut or a coupling position when lamination Protrusions and grooves that can guide the, or a slide guide device to be coupled in a slide manner may be applied.

This fixing device is intended to facilitate the installation and disassembly of each of the reactors 20 and 40, and can provide convenience during construction and subsequent maintenance work.

In addition, the first reaction space 21 and the second reaction spaces 41 provided above the first reactor 20 are mutually heightened by the outlets 23 and 45 and the inlet 43. Each stage has its own independent multi-stage reaction space, allowing individual repeated mixing of wastewater, air and microorganisms at each stage.

That is, the first reactor 20 and each of the stacked second reactors 40 form a continuous connection structure of a CSTR (Continuous-Stirred Tank Reactor) structure, and stopper flow (PFR, Plug) By inducing a flow reactor, the reaction time can be shortened and the decomposition rate of organic matter per unit volume can be maximized.

In addition, such an increase in the decomposition rate of organic matter may lead to a shortening of the decomposition time, which is why the treatment of particularly high concentration wastewater (for example, livestock waste, digestive wastewater, food wastewater, landfill wastewater, manure and leather, paper, etc.) The efficiency can be improved.

Accordingly, the wastewater purification apparatus may have a microbial concentration of 10,000 ~ 15,000mg / L, through this, it is possible to be strong in load fluctuations, shorten the decomposition time.

On the other hand, when passing through each of the reactors (20, 40), the heat of decomposition due to the increase in the decomposition time per unit volume and unit time of high concentration organic matter, the internal heat due to the compression, mixing and stirring of air and the alkaline of the livestock wastewater Due to the influence of the propensity, the ammonia nitrogen component may be formed, which is not oxidized to nitrogen from nitric acid, and as the ammonia nitrogen component rises along the rising air stream of the internal air and strips, it has an additional denitrification effect. Will be imported.

Therefore, an upper portion of the housing 10 may be further provided with a piping device (not shown) for deodorization, wherein the piping device is a hood for collecting the air flow and a duct connected to the hood ( duct), and the deodorization method may be applied by the microbial extinction method.

On the other hand, the second reaction space 41 is preferably provided with a circulation induction part (50).

Here, the circulation induction part 50 is preferably provided in the longitudinal direction of the second reactor 40 in pairs under the second reaction space 41.

In addition, the circulation induction part 50 may be located above the inlet 43 so that the wastewater introduced into the inlet 43 formed at the lower portion of the second reactor 40 may be hit. It is preferable to be provided to be inclined upwardly.

As a result, the wastewater flowing into the inlet 43 moves upward while being hit by the lower surface of the circulation induction part 50 so as to be moved to both sides according to the inclination angle of the circulation induction part 50.

In addition, the wastewater moving upward in the side of the second reaction space 41 increases the turning force by adding air energy due to the updraft, thereby maximizing the strength of the mixing in the second reaction space 41. It can increase the transfer efficiency of oxygen and decomposition of organic matter.

In addition, the rotational force of the waste water is increased by the circulation induction part 50, and thus, sludge or microbial mixture (floc) in the second reaction space 41 as the waste water is circulated in the second reaction space 41. Sedimentation on this floor can also be prevented.

Accordingly, the treatment water quality may be prevented from being lowered due to the decay of the settling sludge and the rise of the decayed sediment.

The width of the circulating induction part 50 is sufficient to guide the wastewater introduced into the inlet 43 to move upwardly to both sides, and the width of the circulation induction part 50 is preferably formed so that it does not interfere with the turning of the wastewater.

In addition, the inclination angle of the circulation induction part 50 preferably corresponds to the inclination angle of the upwardly inclined surface 42 that forms the lower portion of the second reactor 40.

In this case, when the lower portion of the second reactor 40 is formed horizontally, the inclination angle of the circulation induction part 50 may be appropriately provided at an inclination angle sufficient to guide the wastewater to both sides to circulate the wastewater. have.

In addition, the housing 10, the first reactor 20, the second reactor 40 and the circulation induction part 50 is immersed in the waste water, it is preferably made of a material excellent in corrosion and corrosion resistance, etc. Of course.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various modifications may be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. It is possible and such variations are within the scope of the present invention.

1 is a perspective view showing a wastewater purification apparatus according to an embodiment of the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

Figure 4 is an exploded perspective view showing a wastewater purification apparatus according to an embodiment of the present invention.

Figure 5 is a partial cutaway perspective view of the second reactor of the wastewater purification apparatus according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: housing 20: first reactor

21: first reaction space 23,46: outlet

25,45: downward slope 30: air supply

31: supply hole 40: second reactor

41: second reaction space 43: inlet

50: circulation guide part

Claims (7)

A housing forming a body; A first reactor provided at the bottom of the housing and configured to discharge the wastewater from the outside into the first reaction space formed therein and to be mixed with air and microorganisms; It is provided in a multi-layer on the upper side of the first reactor, each independently has a second reaction space, sewage of sludge by allowing the wastewater flowing from the first reactor to be repeatedly mixed with air and microorganisms separately in the second reaction space. A second reactor to be purified while being prevented; And And a circulation induction part provided in the second reaction space to guide the wastewater introduced from the lower side to circulate in the second reaction space. The method of claim 1, The circulation induction part is provided in pairs at the lower side of the second reaction space, each of which is provided to be inclined upwardly on both sides to move the incoming wastewater upward to both sides of the second reaction space to increase the turning force of the wastewater. Wastewater purification equipment. The method of claim 1, The second reactor is hermetically formed to form the second reaction space therein, and an upper portion of the second reactor is formed to correspond to each other with downward slopes inclined downward to both sides along the width direction, and the lower portion is formed to correspond to the downward slope. The wastewater purification apparatus, characterized in that formed in the inclined upward slope to each side in the width direction. The method of claim 3, Discharge openings are formed in a predetermined width along a longitudinal direction of each of the downwardly inclined surfaces to discharge the wastewater upwardly, and each of the upwardly inclined surfaces corresponds to the outlets so that the wastewater discharged from the outlets flows into the second reaction space. Waste water purification apparatus characterized in that the inlet is formed in the shape. The method of claim 1, The second reactor is sealed to form the second reaction space on the inside, wastewater purification apparatus, characterized in that the cross-sectional shape in the longitudinal direction is a hexagon. The method of claim 1, The first reactor is formed extending in the longitudinal direction of the housing, both ends of the penetrating through the housing and the first reaction space is in communication with the outside, a waste water purification apparatus, characterized in that a plurality in the width direction of the housing is installed. The method of claim 1, The first reactor is provided in the longitudinal direction of the first reaction space, characterized in that the air supply for discharging the air upwards to allow the wastewater outside the housing to flow into the inside of the first reaction space by the rising air flow Wastewater purification equipment.

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