KR101212787B1 - Apparatus for treating waste water including livestock waste water and excreta using ozone gas having round air cell - Google Patents

Abstract

PURPOSE: A wastewater treatment apparatus containing excrement and livestock wastewater is provided to circulate and recycle exhaust ozone by improving the contacting efficiency and treatment efficiency of wastewater. CONSTITUTION: A wastewater treatment apparatus includes a chamber, an introducing pipe(200), one or more round type partitions(301 to 304), treatment water draining pipes(500, 600), and an ozone exhausting pipe(700). The introducing pipe mixes ozone gas and wastewater and introduces the mixture into the lower part of the chamber. The partitions are concavely formed toward the lower part of the chamber in order to divide the chamber into a plurality of spaces. The partitions include one or more through holes(305). The treatment water draining pipes separates wastewater from ozone gas and drains the separated wastewater to the outside of the chamber. The ozone exhausting pipe exhausts ozone gas to the upper part of the chamber. [Reference numerals] (AA) Wastewater to be treated; (BB) Ozone gas; (CC) Exhausted ozone; (DD) Ozone bubbles; (EE) Treated water; (FF) Wastewater + ozone gas

Description

Wastewater treatment device including manure and livestock wastewater using ozone with round diaphragm {APPARATUS FOR TREATING WASTE WATER INCLUDING LIVESTOCK WASTE WATER AND EXCRETA USING OZONE GAS HAVING ROUND AIR CELL}

The present invention relates to a wastewater treatment apparatus including manure and livestock wastewater which can increase the contact time and contact area of ozone gas and wastewater to be treated, thereby improving the treatment efficiency of wastewater using ozone gas.

In general, wastewater treatment processes such as manure and livestock wastewater using ozone gas are carried out for the purpose of deodorization, removal of color, enhancement of flocculation and sedimentation effects, improvement of taste, removal of metal impurities such as iron and manganese, and sterilization. have. That is, when the ozone gas treatment process is applied during the wastewater treatment process, the oxidation potential is high due to the high oxidation potential, and the organic polymer is converted into the low molecular organic material so that activated carbon adsorption or biological treatment is performed. This makes it easier to increase the treatment efficiency and extend the durability of activated carbon and subsequent processes.

On the other hand, conventionally known ozone treatment processes include mechanical mixing, injector, or diffuser, and the like, depending on the water quality and operating conditions of the influent wastewater, and the treatment efficiency is different. Accordingly, there is a continuing need for the development of an improved ozone treatment process and wastewater treatment apparatus capable of ensuring more efficient and uniform treatment efficiency.

On the other hand, the ozone treatment process and treatment apparatus by the injector system are the most widely used conventionally. This has the advantage that the processing apparatus is relatively small, so that the installation area is not large and the clogging phenomenon is small. However, such an injector treatment process and treatment apparatus has a disadvantage in that the overall treatment efficiency (for example, the contact efficiency of waste water and ozone gas) is low and generation of ozone is high (“Sewage Terminal Treatment Facility Mechanical Design). See the Effects and Limitations of Ozone Contact Oxidation in the Guidelines (Ministry of Environment). For this reason, a considerable amount of wastewater did not come into proper contact with the ozone gas, which made it difficult to take advantage of the ozone treatment, which caused a load increase in the post-treatment process after the ozone treatment process. In addition, as the ozone treatment and the contact efficiency is low, it is true that it is not easy to secure stable water quality.

Accordingly, the present invention provides a wastewater treatment apparatus including manure and livestock wastewater using ozone which can increase the contact time and the contact area of the ozone gas and the wastewater to be treated, thereby improving the treatment efficiency of the wastewater using the ozone gas.

The present invention chamber; An inlet pipe which mixes ozone gas and wastewater to be treated and enters the lower part of the chamber; At least one round diaphragm formed concave toward the bottom of the chamber so as to partition the inside of the chamber into a plurality of spaces; A treatment water discharge pipe separating the treatment target wastewater treated with ozone gas from ozone gas and discharging it to the outside of the chamber; And it provides a wastewater treatment apparatus including a manure and livestock wastewater comprising an ozone discharge pipe for discharging the ozone gas separated from the waste water to be treated to the upper portion of the chamber.

Such wastewater treatment apparatus can further increase the contact time and the contact area of ozone gas and the wastewater to be treated in each space in the treatment apparatus due to the installation of the round diaphragm. As a result, by using such a wastewater treatment apparatus, the contact efficiency and treatment efficiency between ozone gas and the wastewater to be treated can be further improved, and stable water quality can be secured by the ozone treatment. In addition, since substantially all of the wastewater can be ozone-treated in contact with the ozone gas, the load can also be greatly reduced in the post-treatment process or the like.

As described above, the wastewater treatment apparatus including the manure and livestock wastewater according to the present invention further increases the contact time and the contact area of the ozone gas and the wastewater to be treated, thereby improving the contact efficiency and treatment efficiency of the wastewater to be treated using the ozone gas. It can improve more. Therefore, by using such a wastewater treatment apparatus, it is possible to secure stable water quality due to ozone treatment. In addition, since substantially all of the waste water can be ozone-treated in contact with the ozone gas, the load can also be greatly reduced in the post-treatment process, etc., and recycling and recycling of the ozone can be greatly contributed to the economics of the entire process. .

Therefore, the wastewater treatment apparatus according to the present invention can be very preferably applied to ozone treatment of various wastewater and wastewater including manure and livestock wastewater.

1 is a cross-sectional view showing a schematic configuration of a wastewater treatment apparatus including a manure and livestock wastewater according to an embodiment of the present invention.
2 is a view showing the shape of various round diaphragm that can be applied to the wastewater treatment apparatus of the embodiment.
3 is a graph showing the dissolved oxygen concentrations contained in the waste water for each treatment time after using the wastewater treatment apparatuses of Examples 1 and Comparative Examples 1 and 2, respectively, and performing wastewater treatment using air instead of ozone.

Hereinafter, with reference to the accompanying drawings, it will be described in detail for the wastewater treatment apparatus including the manure and livestock wastewater in accordance with an embodiment of the invention. 1 is a cross-sectional view showing a schematic configuration of a wastewater treatment apparatus according to an embodiment of the invention, Figure 2 is a view showing the shape of various round diaphragm that can be applied to the wastewater treatment apparatus of the embodiment.

1, a wastewater treatment apparatus including a manure and livestock wastewater according to an embodiment of the present invention comprises a chamber; An inlet pipe 200 which mixes ozone gas and waste water to be treated and flows into the lower chamber; At least one round diaphragm 301 to 304 formed concave toward the lower portion of the chamber to partition the inside of the chamber into a plurality of spaces and having at least one through hole 305; Treatment water discharge pipes 500 and 600 which separate the treatment target wastewater treated with ozone gas and discharge the ozone gas out of the chamber; And it may include an ozone discharge pipe 700 for discharging the ozone gas separated from the waste water to be treated to the upper chamber.

In the wastewater treatment apparatus of this embodiment, the chamber may define a reaction space for treating wastewater using ozone gas.

In addition, the inlet pipe 200 is for supplying ozone gas and waste water to be treated into the chamber using the same, and allows the ozone gas and waste water to be mixed to be introduced into the lower portion of the chamber. Is connected to. The inlet pipe 200 may further include an ozone inlet pipe and a wastewater inlet pipe connected to the inlet pipe 200 so that ozone gas and the waste water to be treated are mixed and supplied to the chamber. The ozone inlet pipe and the waste water inlet pipe may be connected to the inlet side of the inlet pipe 200 through the injector 100.

The reaction space inside the chamber is divided into a plurality of spaces 401 to 404 by one or more round diaphragms 301 to 304. The mixture of ozone gas and the treatment wastewater introduced into the chamber is transferred from the lower portion of the chamber to the upper portion, and the wastewater to be treated can be ozonated while continuously treating the treated wastewater and the ozone gas in each of the plurality of compartments. have.

At this time, the mixture may be transferred from the lower space to the upper space adjacent thereto through the through holes 305 on the round diaphragms 301 to 304 while passing through each round diaphragm 301 to 304. However, as the round diaphragm which partitions each space is formed concave toward the lower part of the chamber in this way, the contact area and the contact time of the wastewater to be treated and the ozone gas in each space can be greatly increased.

That is, as shown in the enlarged circular drawing of FIG. 1, the mixture of the wastewater to be treated and the ozone gas supplied into each space may form swirl flow while turning along the recess of the round diaphragm. By forming such swirling flow in each space without directly exiting through the through hole 305 in the next space, the wastewater to be treated can be in contact with the ozone gas for a sufficient time in each space.

However, bubble droplets of ozone gas may gather and increase with each other during this contact time, which may reduce the contact area between the ozone gas and the wastewater to be treated. However, in the wastewater treatment apparatus of the embodiment, a plurality of fine through holes 305 are formed on the round diaphragms 301-304, and the mixture of the ozone gas and the wastewater to be treated is formed through these through holes ( 305) to be delivered to the next space. That is, in the course of passing the mixture through the fine through hole 305, the bubble droplets of the ozone gas may be finely divided again, which may increase the contact area between the ozone gas and the wastewater to be treated again. .

More specifically, in each space divided by the round diaphragm 301-304, gas is mainly distributed in the upper part of each space, and mainly liquid is distributed in the lower part, and separation occurs, and a gas is the round diaphragm 301. When the pressure reaches a predetermined pressure or more and accumulates while forming a swirl flow along ˜304, it may rapidly exit through the fine through hole 305. In this process, bubble droplets of ozone gas, which have accumulated and increased in size, may be finely divided again, and the contact area (specific surface area in which gas and liquid contact) of the ozone gas and the wastewater to be treated is increased. Can increase. Thereafter, in the next space, an increased surface area causes a reaction between ozone gas and the wastewater to be treated, thereby increasing the ozone treatment efficiency.

As such, when the wastewater treatment apparatus of one embodiment is used, the contact time and the contact efficiency of ozone gas and the wastewater to be treated in each treatment space can be greatly improved than previously known, and thus, substantially all the wastewater to be treated is substantially treated. In contact with the ozone gas can greatly increase the overall treatment efficiency.

On the other hand, as shown in the enlarged view in the circle of Figure 1, the through hole 305 is preferably formed in the form of a tube protruding to both sides of the concave and convex portions of each round diaphragm (301 ~ 304), It may be formed in the form of a nozzle for injecting a mixture of the waste water and ozone gas to be treated from the space of the upper surface adjacent to the space.

As the through-hole 305 is formed in the form of a protruding tube, the mixture of ozone gas being treated in each space and the wastewater to be treated does not immediately exit to the next space, but forms swirl flow for a longer time in each space. In this case, the treated wastewater and ozone gas may be brought into contact with each other for a long time. As a result, the contact time between the wastewater to be treated and ozone gas is further increased, and thus the ozone treatment efficiency can be further improved.

In addition, in the wastewater treatment apparatus of one embodiment, two or more round diaphragms 301 to 304 may be formed so that the space in the chamber may be divided into three or more, and the upper and lower round diaphragms 301 to 304 are adjacent to each other. Through-holes arranged on different positions may be formed thereon. That is, as shown in Figure 2, on the round diaphragm (301 ~ 304), a plurality of through holes 305 may be arranged and formed in various positions and forms, the upper and lower round diaphragm adjacent to each other It is appropriate that the plurality of through holes 305 are arranged and formed at different positions and shapes on the 301 to 304.

In this way, the mixture of the wastewater and ozone gas to be treated from the lower space does not exit directly into the upper space, but is maintained for a longer time in each treatment space, while the treated wastewater and the ozone gas are in contact with each other for a long contact time. Can be. As a result, the ozone treatment efficiency can be further improved.

The number and size of the through holes 305 formed on the round diaphragms 301 to 304 may be used to determine the type of wastewater to be treated, the impurity content, the total amount of wastewater, and the treatment time required in each space. It can consider and adjust suitably and can form. However, on each round diaphragm 301-304 in order to further improve the efficiency of the entire treatment process, while allowing the mixture of the wastewater and ozone gas to be treated to be sufficiently in contact with each other within each space, A through hole having a diameter of 7.5 to 15 mm can be formed. The number and arrangement of through holes can be appropriately increased or decreased depending on the processing capacity of the processing apparatus.

On the other hand, according to a specific example of the wastewater treatment apparatus of the embodiment shown in Figure 1, the round diaphragm (301 ~ 304) is a suitable number, for example, to partition the space in the chamber into a plurality, for example, five For example, four may be formed.

The first to third spaces from the bottom of the five spaces divided by the round diaphragms 301 to 304 may be defined as the first space 401, the second space 402, and the third space 403. In the first to third spaces 401 to 403, the wastewater to be treated may be ozone treated while the ozone gas and the wastewater to be treated contact each other with sufficient contact time and contact area within each space on the principle described above. . In addition, the space above the third space 403 may be defined as a gas-liquid separation space (or a fourth space; 404), and in the gas-liquid separation space 404, the waste water treated with ozone gas and the ozone gas Gas-liquid separation may be performed, and the ozone-treated wastewater, which is a liquid component among the gas-liquid separated components, may be discharged to the outside of the chamber through the treated water discharge pipes 500 and 600.

The treatment water discharge pipes 500 and 600 may be connected to the second space from the top of the chamber, that is, the gas-liquid separation space 404, to the outside of the chamber to discharge the ozonated wastewater. In addition, the treated water discharge pipes 500 and 600 include a gas-liquid separation pipe 500 and a treated water pipe 600 to collect liquid components (that is, ozone-treated wastewater) separated by the gas-liquid separation pipe 500. Passing through the treated water pipe 600 may discharge the ozone treated wastewater to the outside of the chamber.

Meanwhile, as described above, the gas component, ie, the residual ozone gas component, of the gas-liquid separated components may be delivered to the space at the top of the chamber, and may be discharged to the upper portion of the chamber through the ozone discharge pipe 700 connected to the space. For proper discharge of this ozone gas, the ozone discharge pipe 700 may be connected to the outside of the chamber from the first space at the top of the chamber.

In addition, not only the ozone gas but also some liquid components delivered to the top space together with the ozone gas in some residual liquid, for example, ozonated wastewater, may be delivered to the space at the top of the chamber. The ozonated residual wastewater may be discharged to the outside of the chamber by joining the remaining ozonated wastewater through the residual water discharge pipe 800 connected to the treated water discharge pipe 700 from the uppermost space of the chamber.

The ozonated wastewater discharged to the outside of the chamber may be delivered to a subsequent treatment device for activated carbon adsorption or biological treatment, which is a post treatment process.

On the other hand, the ozone discharge pipe 700 may be connected to the ozone recycle pipe, this ozone recycle pipe may be connected to the inlet pipe 200 described above. Through the ozone recirculation pipe, the residual ozone gas can be recycled to the inlet pipe 200 to be reused in the ozone treatment of the waste water, thereby making the entire treatment process more efficient and economical.

In addition, the remaining ozone gas that is not recycled to the inlet pipe through the ozone recirculation pipe may be discharged to the outside, and the ozone gas may be transferred to the deodorizer to be recycled to remove the odor of the waste water. To this end, the wastewater treatment apparatus may further include an ozone reuse pipe connected to the deodorization pipe from the ozone discharge pipe 700.

When using the wastewater treatment apparatus using ozone of the above-described embodiment, the contact time and the contact area of the ozone gas and the wastewater to be treated in each treatment space can be greatly improved. Therefore, by using the wastewater treatment apparatus, the contact efficiency and treatment efficiency between the ozone gas and the wastewater to be treated can be significantly improved, and stable water quality can be secured by the ozone treatment. In addition, since substantially all of the wastewater can be ozone-treated in contact with the ozone gas, the load can also be greatly reduced in the post-treatment process or the like.

Moreover, as the residual ozone gas can be recycled and recycled, the efficiency and economics of the entire treatment process can be greatly improved, and the residual ozone gas can be reused for ozone treatment as well as odor removal of waste water. .

Therefore, the wastewater treatment device is treated with wastewater with ozone gas for deodorization of the wastewater, removal of color, enhancement of flocculation and sedimentation effects, improvement of taste, removal of metal impurities such as iron and manganese, removal of hardly degradable COD, removal of E. coli and sterilization. It can be used very preferably for the purpose of following. In particular, such wastewater treatment apparatus can be preferably and effectively applied to treat various kinds of wastewater, wastewater or sewage, including manure and livestock wastewater.

Hereinafter, preferred examples are provided to aid in understanding the invention, but the following examples are merely to illustrate the invention and the scope of the invention is not limited to the following examples.

Example 1

Using the wastewater treatment device shown in Figure 1, the change was observed by reacting the gas and the liquid, the gas was used for air instead of ozone and the liquid was used for fresh water and the dissolved oxygen concentration was measured for each treatment time, It is shown in Table 1 and FIG. For reference, in FIG. 3, the dissolved oxygen concentration at the treatment time is separately indicated so that the dissolved oxygen concentration after the treatment time of 10 seconds can be compared.

Comparative Example 1

A wastewater treatment process was performed under the same conditions as in Example 1, except that a flat diaphragm was formed instead of a round diaphragm, using a wastewater treatment apparatus having the same configuration as that in FIG. Dissolved oxygen concentrations were measured for each treatment time, and are shown together in Table 1 and FIG. 3.

Comparative Example 2

A wastewater treatment process was performed under the same conditions as in Example 1, except that no diaphragm such as a round diaphragm was used. Dissolved oxygen concentrations were measured for each treatment time, and are shown together in Table 1 and FIG. 3.

number Processing time unit Dissolved Oxygen Concentration (mg / l) Temperature (℃) Example 1 Temperature (℃) 1 in comparison Temperature (℃) Comparative Example 2 One 0 sec 28.3 6.30 28.4 6.29 28.4 6.31 2 5 sec 28.3 7.15 28.4 6.94 28.4 6.89 3 10 sec 28.3 7.54 28.4 7.28 28.4 7.15 4 20 sec 28.3 7.67 28.4 7.49 28.4 7.35 5 30 sec 28.3 7.72 28.4 7.59 28.4 7.47 6 40 sec 28.3 7.82 28.4 7.66 28.4 7.54 7 50 sec 28.3 7.88 28.4 7.72 28.4 7.59 8 60 sec 28.1 7.93 28.4 7.75 28.4 7.62 9 5 min 27.9 7.95 28.0 7.81 28.1 7.74 10 10 min 27.5 7.97 27.5 7.85 27.9 7.80 11 20 min 27.2 8.08 27.3 7.92 27.8 7.86 12 30 min 26.9 8.12 27.0 7.97 27.0 7.92 13 40 min 26.5 8.13 26.7 8.05 26.8 7.96 medium 27.86 7.71 27.98 7.56 28.06 7.48

 Referring to Table 1 and Figure 3, when using the wastewater treatment apparatus having a round diaphragm as in Example 1, compared to the case of using the wastewater treatment apparatus of Comparative Example 1 or 2, dissolved oxygen concentration of the treated wastewater It is confirmed that is increased more. In particular, this can be more clearly confirmed by comparing the dissolved oxygen concentration after 10 seconds of the treatment time shown in FIG. 3.

This indicates that the ozone treatment efficiency of the wastewater treatment apparatus of Example 1 is superior to Comparative Examples 1 and 2, which indicates that the contact time and the contact area of the ozone gas and the wastewater to be treated are greatly increased in the wastewater treatment apparatus of Example 1 It seems that the processing efficiency can be improved.

100 injector 200 inlet pipe
301 to 304 (first to fourth) round diaphragm 305 through hole
401-403 (first to third) space 404 gas-liquid separation space (fourth space)
500, 600 Treatment water discharge pipe 700 Ozone discharge pipe
800 residual water discharge pipe

Claims (9)

chamber;
An inlet pipe which mixes ozone gas and wastewater to be treated and enters the lower part of the chamber;
At least one round diaphragm formed concave toward the bottom of the chamber so as to partition the inside of the chamber into a plurality of spaces;
A treatment water discharge pipe separating the treatment target wastewater treated with ozone gas from ozone gas and discharging it to the outside of the chamber; And
Wastewater treatment apparatus comprising a manure and livestock wastewater comprising an ozone discharge pipe for discharging the ozone gas separated from the wastewater to be treated to the upper portion of the chamber.
The wastewater treatment apparatus of claim 1, further comprising an ozone inlet tube and a wastewater inlet tube connected to an inlet of the inlet tube through an injector.
The wastewater treatment apparatus according to claim 1, wherein the through hole includes a manure and livestock wastewater formed in a tubular shape protruding from both sides of the concave and convex portions of the round diaphragm.
The wastewater treatment apparatus according to claim 1, wherein at least two round diaphragms are formed, and through holes arranged at different positions are formed on adjacent round diaphragms.
The wastewater treatment according to claim 1, wherein the round diaphragm is formed to partition a plurality of spaces in the chamber, and the treatment water discharge pipe is connected to the outside of the chamber from the second space from the top of the chamber. Device.
The wastewater treatment apparatus according to claim 5, wherein the ozone discharge pipe includes manure and livestock wastewater connected from the first space at the top of the chamber to the outside of the chamber.
6. The manure according to claim 5, further comprising a residual water discharge pipe connected to the treated water discharge pipe from the first space so that the wastewater to be treated remaining in the first space at the top of the chamber can be supplied to the treated water discharge pipe. And livestock wastewater.
The wastewater treatment apparatus according to claim 1, further comprising an ozone recycle tube connected to the inlet pipe from the ozone discharge pipe so as to recycle and reuse the ozone gas separated from the wastewater to be treated.
The wastewater according to claim 1, further comprising an ozone reuse pipe connected to the deodorization pipe from the ozone discharge pipe to transfer the ozone gas separated from the wastewater to be treated to a separate deodorization device for use in removing odors. Processing unit.

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