KR20140062758A - Equipment for the treatment of water and method for treating water using the same - Google Patents

Abstract

A water treatment apparatus according to the present invention includes a water collecting tank where water is accommodated, an application agent storage tank that is disposed out of the water collecting tank and stores an application agent, an injector that is disposed in the water collecting tank and injects the application agent; and piping that connects the application agent storage tank to the injector. As such, according to embodiments of the present invention, an application membrane is formed on top of water, particularly water containing gas with a harmful element or a smelling element so that the leakage of gas or steam can be prevented or suppressed fundamentally. In addition, the leakage of gas or steam can be blocked even when the water collecting tank storing the water is cracked.

Description

[0001] The present invention relates to a water treatment apparatus and a water treatment method,

The present invention relates to a water treatment apparatus and a water treatment method, and more particularly, to a water treatment apparatus and a water treatment method for preventing or suppressing external leakage of gas generated in various kinds of condensed water.

Generally, in a steel mill that smelts iron, various gases are used as a heat source, and the condensed water generated from these gases is collected and stored in a collecting tank. That is, a large amount of water contained in various heat source gases is discharged through a water hull or a separately provided outlet, and is stored as condensed water in a collecting tank provided for each operation section. When the amount of condensate stored in the water collecting tank increases, the water is discharged to the outside through a collection line connected to the water collecting tank.

The collecting tank in which the condensed water is collected and stored uses a cover or the like to prevent leakage of various kinds of gas from the condensed water. However, the harmful gas (eg, CO component) leaks through various gaps such as the drain line and the inspection cover . The leaked gas is corrosive and not only corrodes the surrounding facilities, but it is harmful to the human body and has a bad smell, which threatens the health of the operator. In this case, the sealing material is deformed or damaged due to the chemical characteristics of the gas component, and the sealed state can not be maintained.

In addition, when the condensed water is leaked through various gaps in the collecting tank during the collection of the condensed water, it can contaminate the environment around the steelworks if the gas is spread out to the outside. There is also the risk of meeting the flammable materials that may remain in the steelworks, leading to gas explosions and fires.

Korean Patent Registration No. 10-0427142 discloses a water collecting tank installed between the spray nozzle and a stirring tank for collecting condensed water condensed in heat exchange, a hot water tank connected to the water collecting tank to store high-temperature condensed water collected in the water collecting tank, There is disclosed a treatment apparatus including a condensation water cooling tower which is supplied with high temperature condensed water stored in a hot water tank and cooled to a predetermined temperature or lower. In such a treatment apparatus, gas is leaked along various gaps, A problem arises.

Korean Patent No. 10-0427142

The present invention provides a water treatment apparatus and a water treatment method capable of suppressing leakage of gas or vapor generated in condensed water.

The present invention provides a water treatment apparatus and a water treatment method for preventing environmental pollution.

The water treatment apparatus according to embodiments of the present invention includes: a water collecting tank in which water is received; A coating agent storage tank installed outside the water collecting tank and storing the coating agent; An injector installed inside the water collecting tank and injecting the coating agent; And a pipe connecting the coating agent storage tank and the injector.

And a neutralizing agent storage tank installed outside the water collecting tank and connected to the pipe for storing the neutralizing agent.

And a driver connected to the injector to rotate the injector.

The water collecting tank is provided with a sensor for measuring the degree of storage of the water.

Wherein the piping includes a first pipe connecting between the coating agent storage tank and the injector, and a second pipe connecting the neutralization agent storage tank and the first pipe, wherein the first pipe is provided with a first valve, And the second pipe is provided with a second valve.

And a controller receiving the measurement value signal from the sensor and controlling the first valve, the second valve and the driver.

The first pipe is provided with a gas supply pipe for supplying gas.

At least one of the coating agent storage tank and the neutralizer storage tank is provided with a gas supply pipe for supplying gas to maintain the pressure in the tank.

The sprayer includes a sprayer communicating with the pipe and extending in the horizontal direction, and a plurality of spray nozzles formed on the sprayer.

The water treatment method according to the present invention comprises the steps of collecting water in a water collecting tank; A step of spraying a coating agent toward the collected water to form a coating film on the water; And detecting a gas leakage from the condensed water; .

Comparing the detected value with a predetermined set value, and terminating the application of the coating agent when the detected value is smaller than the set value according to a result of the comparison.

The coating agent comprises at least one of oil and foam liquid.

And spraying the neutralizing agent according to the amount of the collected water.

The water is condensed water generated from a gas used as a heat source in steelworks.

Measuring a capacity of the collected water; Comparing the measured value with a predetermined set value; And stopping the spraying of the coating agent when the measured value exceeds the set value, and spraying a neutralizing agent onto the water.

According to the embodiment of the present invention, it is possible to fundamentally prevent or suppress gas or vapor leakage by forming a coating film on the water, particularly the water containing the gas of harmful components or odorous components. Further, even if a gap is formed in the water collecting tank in which the water is stored, gas or steam leakage can be blocked.

In addition, it is possible to detect the gas generated in the contaminated water in real time and effectively prevent and suppress the leakage thereof.

Thus, the leakage of gas or vapor is suppressed, thereby securing the safety of the operator and preventing the pollution of the surrounding environment, particularly the soil, the water quality, and the atmosphere.

1 is a schematic view showing a water treatment apparatus of an embodiment of the present invention;
Figure 2 is a partial enlarged view of the upper region of Figure 1;
3 is a partial enlarged view of the storage tank area of Fig.
Fig. 4 is a partially enlarged view of the piping region of Fig. 1; Fig.
5 is a process diagram illustrating the process of condensate treatment in an embodiment of the present invention.
6 is a process chart for explaining the neutralizing agent injection process of the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

1 is a partial enlarged view of the upper region of Fig. 1, Fig. 3 is a partial enlarged view of the storage tank region of Fig. 1, Fig. 4 is a partial enlarged view of the water tank of Fig. Fig.

The water treatment apparatus of the embodiment of the present invention will be described with reference to Figs. The water treatment apparatus of the present invention includes a water collecting tank 10 in which water is contained, a coating agent storage tank 21 provided outside the water collecting tank for storing the coating agent, a sprayer 30 And a pipe 40 connecting the coating agent storage tank 21 and the injector 30.

The water collecting tank 10 is a kind of container for receiving and storing water and includes a lower body 11 forming a space for accommodating water and a lid 12 connected to an upper part of the lower body 11 to close the space do. Of course, the water collecting tank 10 can be manufactured in various shapes capable of storing water, and the shape and the method are not particularly limited. As shown, the water collecting tank may be composed of two detachable parts, and the lower body and the lid may be integrally manufactured. At least a part of the water collecting tank 10 is formed with a through hole which can be penetrated through a pipe 40 to be described later and the through hole is opened and closed by a sealing plate 60 and is sealed by mounting the sealing plate 60 . Although not shown in the water collecting tank 10, a collecting line for collecting water and a collecting line for discharging water can be connected and combined. Collecting water generated from various operation phenomena is collected and moved to the water collecting tank 10, and the water collecting line is a line for discharging water to the outside when water in the water collecting tank 10 is stored in excess of a predetermined value or more. At this time, the water collected in the water collecting tank (10) may contain a gas or a vapor containing a harmful component or a corrosive component. For example, water is condensed water that is condensed in a large amount of water contained in gas used as a heat source in a steelworks.

A sensor 70 for measuring the degree of storage of water, such as condensed water, is mounted in the water collecting tank 10. For example, a sensor 70 for measuring the height, weight or volume of the condensed water collected and stored in the water collecting tank 10 is installed. The level sensor can be used as a sensor. At this time, the degree of storage of the condensed water measured by the sensor 70 is transmitted to a control unit (not shown), which will be described later. That is, the measured value of the sensor is transmitted to the control unit as a signal.

Various storage tanks 20 are installed outside the water collecting tank 10. The storage tank 20 includes at least one of a coating agent storage tank 21 and a neutralizer storage tank 22 for storing a coating agent. The location of the storage tank 20 is not particularly limited and may be installed at a location easily connected to the water collecting tank 10. For example, as shown in the upper side of the water collecting tank (10).

The coating agent storage tank 21 may be a container for storing a coating agent, and may include a body forming a space for storing the coating agent, and a lid coupled to the body to open or close the body. Of course, the coating agent storage tank 21 can be changed in various shapes or modes that can store the coating agent. The coating agent storage tank 21 may be provided with a coating agent inlet 212, a gas supply pipe 211 for supplying gas, and a sensor 216 for sensing the degree of storage of the coating agent. In addition, the coating agent storage tank 21 may be provided with transmission windows 213 and 214 for observing the inside of the tank 21 from the outside and a foaming machine 215 capable of generating bubbles in the coating agent raw material. The coating agent introducing port 212 is provided on the upper side of the tank 21, for example, on the lid and is a path for supplying the coating agent, and is opened or closed depending on the degree of storage of the coating agent sensed by the sensor 216. That is, the detector 216 and the opening / closing valve (not shown) of the coating agent inlet 212 are connected to the controller. When the detector 216 detects that the coating liquid storage amount is insufficient, the controller 216 transmits the coating agent to the controller. And the coating liquid is introduced into the tank 21. At this time, the sensor 216 may use various types of sensors capable of measuring the weight, height, etc. of the coating liquid, and may be, for example, a level sensor. The gas supply pipe 211 is provided on the upper side of the tank 21, for example, on the lid and extends to the inside of the tank 21 by a predetermined length to supply a gas, for example, air. Air is supplied through the gas supply pipe 211 to the inside of the tank 21, in particular, the upper portion of the stored coating agent to maintain or raise the pressure in the tank 21. From this, the coating agent can be easily discharged to the outside of the tank 21 through the pipe 40. The foaming machine 215 is installed on the lower side of the tank 21, for example, on the bottom surface thereof, and is formed to extend into the tank 21 by a predetermined length. The foaming machine 215 can generate bubbles in the coating agent by supplying gas to the coating agent, for example, as a means of generating bubbles in the coating agent. The transmission windows 213 and 214 can be formed on the upper surface and the side surface of the tank 21, and the inside of the tank 21 can be observed through the transmission windows 213 and 214. For example, the storage amount of the coating agent, the color of the coating agent, and the degree of foaming can be observed. The coating agent storage tank 21 supplies the coating agent to the sprayer 30 through the pipe 40.

On the other hand, the coating agent is sprayed onto the condensed water to form a coating film, and may be a liquid. That is, the coating agent forms a coating film on the surface of the condensed water by a substance which is separated and floated without being mixed with water. Such an application agent may be an oil or a foam liquid. Vegetable oil that does not cause environmental pollution can be used as oil, and a solution containing a detergent or a soap component in general water can be used as a foam liquid.

The neutralizing agent storage tank 22 may include a body for storing a neutralizing agent and a lid for opening or closing the body. Of course, the neutralizer storage tank 22 can be modified in a variety of shapes and ways to store the neutralizing agent. The neutralizing agent storage tank 22 may be provided with a neutralizing agent inlet port, a gas supply pipe for supplying the gas and a sensor for detecting the degree of storage of the neutralizing agent. Further, the tank 22 may be provided with a permeable A window may be installed. Since the detailed structure and function of the elements are described in the coating agent storage tank 21, a duplicate description will be omitted. The neutralizer storage tank 22 supplies the neutralizer to the injector 30 through the pipe 40.

On the other hand, the neutralizing agent is a raw material which is injected into the condensed water when the amount of the condensed water is excessively collected, for example, when it is overflowed. In other words, it sprays the agent on an excessive amount of condensed water, and the neutralizing agent neutralizes the oil used as the condensed water component or the oil used as the coating agent. Accordingly, various materials capable of neutralizing oil and harmful substances can be selectively used. For example, it contains a loess material and neutralizes oil and harmful substances. Even if condensate is excessively stored or overflowed in the water collecting tank 10 or leaks from the water collecting tank 10, the neutralizing agent neutralizes the oil and various harmful components, and thus water quality and soil pollution can be suppressed.

The sprayer 30 is installed inside the water collecting tank 10 by means of spraying at least one of a coating agent and a neutralizing agent. The sprayer (30) is installed on the upper side of the inside of the water collecting tank (10) to spray a coating agent or a neutralizing agent toward the condensed water. The injector 30 is connected to a pipe 40 connected to the storage tanks 21 and 22 and includes a main pipe 33, a connecting pipe 34, a jetting base 31, and a spray nozzle 32 . The main pipe (33) extends through the sealing plate (60) in the vertical direction and has a path through which a coating agent or a neutralizing agent passes. For example, the main pipe 33 may be a cylindrical pipe. The upper end of the main pipe 33 can be mounted on the upper or lower surface of the sealing plate 60 and the lower end is positioned inside the water collecting tank 10. A connection tube 34 is provided at a lower end of the main tube 33 and a space through which a coating agent or a neutralizing agent passes is provided in the connection tube 34. The shape of the connection tube 34 is not particularly limited, and can be manufactured in a disc shape having a predetermined thickness. On both sides of the connection tube 34, a jetting base 31 extending in a direction intersecting the extending direction of the main tube 33, that is, in the horizontal direction is connected, and a coating agent or a neutralizing agent is passed through the jetting base 31 Is formed. For example, the jetting base 31 may be a tubular rod. A plurality of injection nozzles 32 are formed along the extending direction of the injection stage 31. The injection nozzle 32 may be a through-hole passing through the pipe of the jetting base 31, or may be a protruding type protruding from the jetting base 31. The injection nozzle 32 may be manufactured integrally with the injection table 31, or may be manufactured by combining separate members.

A driver 50 for rotating the injector 30 is coupled to an upper portion of the injector 30. The driver 60 may be mounted on the upper side of the sealing plate 60 and connected to the control unit, for example, a motor having a decelerating function. The driving unit 50 can rotate the main pipe 33 or the connection pipe 34 to rotate the sprayer 31 and uniformly spray the coating agent or neutralizing agent on the condensed water.

The piping 40 connects the coating agent storage tank 21 and the sprayer 30 with a connection pipe having a passage therein and connects the neutralizer storage tank 22 and the sprayer 30. The pipe 40 includes a first pipe 42 connecting the coating agent storage tank 21 and the injector 30 and a second pipe 41 connecting the neutralization agent storage tank 22 and the first pipe 42, . Each pipe may be formed of a single pipe, or may be formed of a plurality of pipes to supply a more smooth raw material liquid. One end of the first pipe 42 is connected to the lower part of the coating agent storage tank 21 such as the bottom surface of the coating agent storage tank 21 and communicates with the inside of the tank 21 and the other end is connected to the sprayer 30, 33 so as to communicate with the passage in the injector 30. The first pipe 42 may be connected to a gas supply pipe 48 for supplying gas and may be formed between the one end and the other end of the gas supply pipe 48. One end of the second pipe is connected to the bottom of the neutralizing agent storage tank 22, for example, the bottom surface of the neutralizing agent storage tank 22 and communicates with the inside of the tank 22, and the other end is connected to the first pipe. Such a pipe connection method may be variously changed. A first valve 45 is installed at a position near one end of the first pipe 42 or adjacent to the coating agent storage tank 21 and a second valve 44 is provided at the second pipe 41, The path of the pipe can be opened or closed. A third valve (46) may be further installed near the injector (30) of the first pipe (42). A fourth valve (not shown) is provided on the gas supply pipe 48.

Each of these valves may be connected to the control unit so that the opening and closing thereof can be controlled in accordance with the signal of the control unit. For example, when the first valve 45 and the third valve 46 are opened under the control of the control unit and the sprayer 30 is rotated through the actuator 50, the coating agent supplied from the coating agent storage tank 21 It is sprayed on top of the condensate. At this time, when the foam liquid is used as the coating agent and the fourth valve is opened, the air supplied from the fourth valve generates bubbles in the foam liquid, so that the foam can be sprayed on the condensed water. At this time, the control unit has a timer function, so that the time for spraying the coating agent can be automatically adjusted. In addition, the control unit may receive the measured value of the degree of condensed water storage from the sensor 70, correspondingly discharge the condensed water using the collection line, or initiate the neutralization agent injection process. That is, when the first valve 45 and the fourth valve are closed and the second valve 41 and the third valve 46 are opened and the injector is rotated under the control of the control unit, the neutralizing agent supplied from the neutralizing agent storage tank 22 Is sprayed onto the top of the condensed water. The controller may receive the measurement value of the degree of storage of the coating agent from the detector 216 and may inject the coating agent into the tank 21 through the coating agent inlet 212. [

In the following, the water treatment method will be described with reference to Figs. 5 and 6. Fig. FIG. 5 is a flow chart for explaining the process of the condensed water of the embodiment of the present invention, and FIG. 6 is a process diagram for explaining the neutralizer injection process of the embodiment of the present invention.

The water treatment process of the embodiment of the present invention includes a process (S11) of collecting water in the water collecting tank (S11), a process (S12) of forming a coating film on the water by spraying the coating material toward the water collected, (S13).

First, water is collected in the water collecting tank 10 (S11). For example, a large amount of condensed water condensed in a gas used as a heat source in various places of the steelworks is collected through various collection lines and stored in the water collecting tank. Such condensed water may contain harmful, corrosive or odorous gases or vapors.

A coating agent is sprayed onto the condensed water to form a coating film (S12). At this time, oil or foam liquid can be used as a coating agent, and the coating film can be an oil coating film or a foam film. By forming the coating film on the condensed water, it is possible to fundamentally prevent or suppress the outflow of the gas or vapor generated from the condensed water. Such a coating film forming process can be performed for a desired time by setting a time in a timer of the control unit.

A gas leak is detected from outside or inside the water collecting tank (10) containing the condensed water (S13). That is, after the coating film is formed on the upper part of the condensed water, it is detected whether the gas or vapor leaks. Detection of such leaking gas can be performed in various ways, for example, using a gas sensor. Then, the gas detection value is compared with a predetermined set value (S14). When there is no gas leakage by gas detection, the spraying of the coating agent is terminated. Or when the gas detection value is compared with a predetermined set value and the detected value is smaller than the set value, the application agent injection is terminated. At this time, the set value may be an amount that does not affect the surroundings due to a small amount of leaked gas, and may vary depending on the composition and type of gas.

On the other hand, the amount of condensed water collected in the water collecting tank 10 can be increased. At this time, if the amount of the condensed water is excessively increased, it may leak to the outside, the apparatus may malfunction, and the oil of the coating film formed on the condensed water may contaminate the surrounding environment. Therefore, it is necessary to adjust the amount of the condensed water appropriately, or to take measures when the condensed water is excessively overflowed. For example, the neutralizing agent can be sprayed according to the amount of collected condensed water. The method includes the steps of: measuring a capacity of collected water (S21); comparing a measured value with a predetermined set value (22); stopping spraying of the coating agent when the measured value exceeds a set value (S23); spraying a neutralizing agent (S24). That is, the degree of reception of the condensed water in the water collecting tank is continuously sensed by using a level sensor or the like. At this time, if the sensed measured value is smaller than or equal to a predetermined set value, the inside of the water collecting tank is still available, so that the collection of the condensed water or the spraying of the coating agent can be continued. On the other hand, if the measured value exceeds the set value, there is a danger such as leakage, an alarm is generated, the spraying of the coating agent is stopped, and a neutralizing agent capable of neutralizing the oil or the coating agent in the condensed water is sprayed. Such an emergency procedure is automatically performed by various sensors and control units. From this, it is possible to detect and prevent the leakage of condensed water in advance, and even if a small amount of condensed water leaks, environmental pollution caused by oil can be suppressed.

Although the condensate generated in the steelworks has been exemplified above, the present invention can be used for various water treatments. In addition, while the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

10: Water collecting tank 21:
22: Neutralizing agent storage tank 30: Injector

Claims (15)

A water collecting tank receiving water;
A coating agent storage tank installed outside the water collecting tank and storing the coating agent;
An injector installed inside the water collecting tank and injecting the coating agent; And
And a pipe connecting the coating agent storage tank and the sprayer. The method according to claim 1,
And a neutralizing agent storage tank installed outside the water collecting tank and connected to the pipe for storing the neutralizing agent. The method according to claim 1 or 2,
And a driver connected to the injector to rotate the injector. The method according to claim 1 or 2,
Wherein the water collecting tank is provided with a sensor for measuring the degree of storage of the water. The method of claim 4,
Wherein the piping includes a first pipe connecting between the coating agent storage tank and the injector, and a second pipe connecting the neutralization agent storage tank and the first pipe,
Wherein the first pipe is provided with a first valve and the second pipe is provided with a second valve. The method of claim 5,
And a control unit for receiving a measurement value signal from the sensor and controlling the first valve, the second valve and the actuator. The method of claim 5,
And a gas supply pipe for supplying a gas to the first pipe. The method according to claim 1 or 2,
Wherein at least one of the coating agent storage tank and the neutralizer storage tank is provided with a gas supply pipe for supplying a gas to maintain the pressure in the tank. The method according to claim 1 or 2,
Wherein the injector includes a jetting base extending in a horizontal direction and communicating with the pipe, and a plurality of jetting nozzles formed in the jetting base. The process of collecting water in a collection tank;
A step of spraying a coating agent toward the collected water to form a coating film on the water; And
Detecting a leak of gas from the condensed water; ≪ / RTI > The method of claim 10,
Comparing the detected value with a predetermined set value, and terminating spraying of the coating agent when the detected value is smaller than a set value according to a result of the comparison. The method according to claim 10 or 11,
Wherein the coating agent comprises at least one of an oil and a foam liquid. The method according to claim 10 or 11,
And spraying a neutralizing agent according to the amount of the collected water. The method of claim 12,
Wherein the water is a condensate generated in a gas used as a heat source in a steelworks. 15. The method of claim 14,
Measuring a capacity of the collected water;
Comparing the measured value with a predetermined set value;
And stopping spraying of the coating agent when the measured value exceeds a set value, and spraying a neutralizing agent onto the water.

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