KR20190028291A - Water pipe corrosion control system based on slaked lime dispersion device - Google Patents

Abstract

The present invention relates to a water pipe corrosion control system based on a slaked lime dispersion device that is capable of adjusting an amount of a distribution liquid in which slaked lime is contained according to corrosion indexes of produced water at the time when the produced water from a water purification plant is supplied to a water pipe, thereby suppressing or preventing the water pipe from being corroded by the produced water. According to the present invention, the water pipe corrosion control system includes: a dispersing device for mixing a powder or solid slaked lime having predetermined particle sizes and produced water made in a water purification plant to make a dispersion liquid; a pipe connection unit for connecting the water purification plant and a water pipe; a dispersion liquid supply unit for supplying the dispersion liquid made through the dispersing device to the pipe connection unit; an index calculating unit for measuring a calcium ion density and hydrogen ion concentration exponent (pH) of the produced water supplied to the water pipe to calculate a corrosion index using at least one of the measured calcium ion density and hydrogen ion concentration exponent (pH); and a dispersion liquid injection control unit for calculating an amount of dispersion liquid injected on the basis of at least one of the calcium ion density and the corrosion index to control an operation of the dispersion liquid supply unit on the basis of the calculated amount of dispersion liquid injected.

Description

TECHNICAL FIELD [0001] The present invention relates to a water pipe corrosion control system based on a calcium hydroxide dispersing device,

The present invention relates to a water pipe corrosion control system based on a slaked lime dispersing device, and more particularly, to a water pipe corrosion control system based on a calcium lime dispersing device, To a water pipe corrosion control system based on a calcium hydroxide dispersion apparatus for suppressing or preventing corrosion of a water pipe due to production water.

In Korea, epoxy coating is applied to the inner surface of the water pipe at the time of designing, and water treatment technology such as application of chemicals such as Ca (OH) ₂ is applied during operation.

Corrosion management of water pipes is not limited to water quality management at the water treatment plant. Instead, corrosion inhibitors are injected before or after the water storage tank of an apartment or building. In the water treatment plant, pH adjustment agents such as caustic soda and sulfuric acid, and alkali supplements such as calcium hydroxide and soda ash And a method of using a water treatment agent is mainly used.

Only a small number of researchers and research institutes are conducting research on corrosion control of water pipes, and there is no guidelines or standards for drug injection, which makes it difficult to introduce corrosion control technology into actual water purification plants.

In the late 2000s, attempts were made to control tap water quality by changing the pH, calcium ion concentration, and alkalinity by injecting chemicals into the water purification plant at K-water. However, research on the pilot project level due to technical problem identification and pipe clogging It has been discontinued.

The Ministry of the Environment has designated the Langelier Saturation Index (LSI), which is a water corrosivity index, as a monitoring item for water quality to be eaten since July 1, 2012. The Environmental Science Institute and the Seoul Metropolitan Government have jointly conducted a basic study to establish and apply the guidelines for the Langerlia Index to the domestic situation through monitoring. However, up to now, no guideline has been proposed for the corrosive index .

Developed countries such as USA and France are leading water quality management technology for water tap water reduction of tap water mainly and are focused on improvement of chemical agent performance, optimization of input quantity and improvement of water treatment process.

As a method of controlling the corrosiveness of the supplied water, there is a method of injecting chemicals such as calcium hydroxide or calcium hydroxide which are harmless to the human body in the water supply. However, there is a problem that the turbidity increases sharply when the chemical is injected due to the low solubility of the slaked lime. In order to solve this problem, it is necessary to pulverize and compact the underwater lime particles.

Currently, there are methods of homogenizing the liquid slaked lime by crushing homogenization method using a milling machine and pulverizing the slaked lime particles using a crushing impeller, and separating the slaked lime having a desired particle size by using a screen.

However, in the case of a milling machine, due to the nature of the technology, there is a limitation in applying to large-capacity production, and there is a problem that the solubility of the slaked lime is reduced due to the leakage of milling media or the temperature increase of the liquid slaked lime solution due to the crushed friction heat.

In the case of using a pulverized impeller, since the distribution of the pulverized particles is wide, a screening process must be applied to the rear end, and a driving unit capable of backing up the screen to prevent screen clogging due to particles larger than the screen should be provided. In addition, there is a disadvantage that a large area is required compared to the production capacity.

Therefore, it is necessary to develop appropriate technology to solve the above problems.

1. Korean Registered Patent No. 10-0770024 (Title: Real-Time Water Quality Control Device for Corrosion Reduction of Water Supply Pipes, Announcement 2007. 10. 18.) 2. Korean Registered Patent No. 10-1292633 (entitled "Apparatus for manufacturing liquid slaked lime," published on Mar. 31, 2013)

SUMMARY OF THE INVENTION The object of the present invention is to solve the problems of the prior art, and it is an object of the present invention to provide a method and apparatus for supplying water produced in a water purification plant to a water supply line by controlling the injection amount of a dispersion containing slaked lime The present invention provides a water pipe corrosion control system based on a slaked lime dispersing device for suppressing or preventing corrosion of pipelines.

To achieve the above object, according to the present invention, there is provided a water pipe corrosion control system based on a slaked lime dispersing apparatus, comprising: a dispersion system for mixing a slurry of powder having a predetermined particle size or a solid state slurry with production water produced in a water purification plant, Device; A pipe connecting unit connecting the water purification plant and the water pipe; A dispersion liquid supply unit for supplying the dispersion produced in the dispersion apparatus to the pipeline connection unit; An index calculating unit for measuring a calcium ion concentration and a hydrogen ion index (pH) of the produced water supplied to the water line and calculating a corrosion index using at least one of the measured calcium ion concentration and the hydrogen ion index (pH) ; And a dispersion liquid injection control unit for calculating an injection amount of the dispersion liquid based on at least one of the calcium ion concentration and the corrosiveness index and controlling the operation of the dispersion liquid supply unit based on the injection amount of the dispersion liquid .

Thus, corrosion of the water supply pipe can be prevented by pulverizing and supplying the slaked lime contained in the dispersion liquid for preventing pipeline corrosion to a predetermined particle size or less.

Here, the dispersion apparatus includes a hydrated lime hydration unit for mixing the hydrated lime of powder or solid state with the production water produced in the water purification plant to produce a mixed liquor; A crushing unit for crushing the slaked lime contained in the mixed liquid so that the slaked lime contained in the mixed liquor mixed in the hydrated lime hydration unit has a predetermined particle diameter; And a cyclone unit for separating the slaked lime of predetermined particle size from the slaked lime contained in the mixed liquor treated in the crushing unit.

Thereby, the slaked lime is crushed stepwise, and only the slaked lime particles having a particle diameter equal to or less than the reference value are separated and supplied to be mixed with the dispersion liquid, whereby corrosion prevention of the water supply pipe can be effectively prevented.

The apparatus may further comprise a dispersion storage unit for storing a dispersion liquid formed by mixing the slaked lime having the predetermined particle size and the produced water.

Thus, the preliminarily produced dispersion liquid can be stored and supplied when necessary.

The apparatus may further include a dispersion control unit for controlling the operation of at least one of the hydrated hydrometric hydrants, the crushing units, and the cyclone units according to the level of the dispersion liquid storage unit.

Thereby, the level of the dispersion liquid can be controlled and maintained at a sufficient level to cope with the demand.

The pyrolysis apparatus may further include a slaked ladle circulation path for re-supplying the slaked lime separated from the cyclone unit to the lime hydration unit or the crushing unit.

By doing so, it is possible to prevent the large slaked lime from being mixed into the dispersion and to pulverize the slaked lime repeatedly so as to have a particle diameter equal to or smaller than a desired reference value.

A carbon dioxide storage tank in which carbon dioxide is stored in at least one of a gaseous state and a liquid state; And a carbon dioxide supplying unit for supplying the carbon dioxide to the pipeline connecting unit, wherein the dispersion injecting control unit calculates an injection amount of the carbon dioxide based on at least one of the calcium ion concentration and the corrosiveness index, And the operation of the carbon dioxide supply unit is controlled based on the amount of the carbon dioxide injected.

Thereby, a necessary amount of carbon dioxide can be supplied in correspondence with the measured values of the calcium ion concentration and the corrosiveness index of water supplied to the water channel.

According to the water pipe corrosion control system based on the calcium hydroxide dispersion apparatus according to the present invention, when the production water produced in the water treatment plant is supplied to the water pipe, the amount of the calcium hydroxide-containing dispersion liquid is adjusted according to the corrosion index of the production water, It is possible to suppress or prevent the corrosion of the water pipe by the pipe.

Further, the present invention can physically pulverize the liquid slaked lime in water and homogenize it through a cyclone unit and a separation screen.

Further, according to the present invention, the physically pulverized slaked lime having a wide particle diameter distribution can be suitably separated according to the particle diameter through the cyclone unit. In addition, the slaked lime separated from the cyclone unit is returned to the physical grinding process, and a small amount of unsolidified lime particles can be separated through the separation screen.

Further, in the present invention, the trace amount of slaked lime separated from the separation screen is gradually separated by gravity, thereby reducing the load on the separation screen.

In addition, unlike the conventional art, the present invention does not require a driving part on the separation screen, and it will be an epoch-making technique that can easily control the particle size distribution of the liquid slaked lime according to the design and separation screen of the cyclone unit.

In addition, the present invention can provide a method of reducing the occurrence of corrosion of a water pipe that can be applied at the level of a water purification plant, and can dramatically improve the generation of rust in tap water through commercialization in accordance with technology development. An opportunity to resolve can be provided.

In addition, in the present invention, the system for controlling corrosion of tap water has not been systematically studied. Therefore, the development of a calcium hydroxide dispersing apparatus can greatly contribute to the operation of a water purification plant in view of the corrosive nature of domestic water quality. In particular, it can be used in wide-area and small-sized water treatment plants.

In addition, the present invention can be used as a useful data for establishment of corrosion prevention measures and development of a system in a domestic water treatment plant where there is no definite solution for the corrosion problem of the water pipe leading to adverse effects such as generation of rust in tap water.

In addition, the present invention can minimize the life span of waterworks facilities caused by corrosion, property loss due to replacement and repair work due to corrosion of the plant species, and the like.

Further, the present invention can reduce the corrosion of the water distribution network, reduce water leakage caused by corrosion, and reduce the accident handling cost due to leakage.

FIG. 1 is a view illustrating a system for controlling corrosion of a water pipe based on a calcium hydroxide dispersion apparatus according to an embodiment of the present invention. Referring to FIG.
2 is a view illustrating a corrosion inhibiting lime dispersion apparatus in a water pipeline corrosion control system based on a lime dispersion apparatus according to an embodiment of the present invention.
3 is a perspective view showing a hydration impeller of a hydrated hydrated hydrated unit in a corrosion inhibiting lime dispersion apparatus according to an embodiment of the present invention.
4 is a cross-sectional view of the hydration impeller shown in Fig.
FIG. 5 is a flowchart for explaining control logic of a dispersion injection control unit in a water pipe corrosion control system based on a calcium hydroxide dispersion apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a water pipe corrosion control system based on a calcium hydroxide dispersion apparatus according to the present invention will be described with reference to the accompanying drawings. Here, the present invention is not limited or limited by the examples. Further, in describing the present invention, a detailed description of well-known functions or constructions may be omitted for clarity of the present invention.

Further, the apparatus for dispersing lime for corrosion prevention according to an embodiment of the present invention will be explained as a dispersion apparatus for a system for controlling corrosion of a pipe line according to an embodiment of the present invention.

In the present invention, reference numerals of constituent elements are shown in explanations of reference numerals, and in describing specific contents, reference numerals in the detailed constituent elements are omitted.

FIG. 1 is a diagram illustrating a corrosion control system of a water line 800 based on a lime dispersion apparatus according to an exemplary embodiment of the present invention. FIG. 2 is a schematic view of a water line 800 based on a lime dispersion apparatus according to an embodiment of the present invention. 3 is a schematic view of a hydration impeller 213 of a hydrated hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate hydrate thereof, FIG. 4 is a cross-sectional view of the hydration impeller 213 shown in FIG. 3, and FIG. 5 is a cross-sectional view of a hydration impeller 213 in a water pipeline 800 corrosion control system, And the control logic of the control unit 700. Fig.

1 to 5, a system for controlling corrosion of a water line 800 based on a slaked lime dispersing apparatus according to an embodiment of the present invention, when supplying production water produced in a water purification plant 900 to a water line 800, Corrosion of the water line 800 due to the production water can be suppressed or prevented by adjusting the amount of the liquid containing the slaked lime according to the corrosion index of the produced water.

The system for controlling corrosion of a water line 800 based on a lime dispersion apparatus according to an embodiment of the present invention includes a dispersion apparatus 200, a dispersion liquid supply unit 300, a pipeline connection unit 500, an exponent calculation unit 600 And a dispersion injection control unit 700. [

The dispersion apparatus 200 mixes the powdered or solidified slaked lime having a predetermined particle size and the produced water supplied from the water purification plant 900 to the water line 800 to produce a liquid dispersion.

The dispersing device 200 includes a hydrated lime hydration unit 210 for mixing the hydrated lime of powder or solid state with the produced water produced by the water purification plant 900 to form a mixed liquor, A crushing unit 220 for crushing the slaked lime, and a cyclone unit 230 for separating the slaked lime having a predetermined particle size from the slaked lime or separating the slaked lime having a predetermined particle size from the slaked lime of the mixed liquor.

For example, when the slaked lime having a predetermined particle diameter passes through the cyclone unit 230, it is mixed with the produced water to form a dispersion liquid. As another example, when passing through a cyclone, a slurry of predetermined particle size remains in the mixed liquid, so that the dispersion can be formed through the mixed liquid in which the slaked lime of predetermined particle size remains.

The slaked lime having a particle diameter larger than a predetermined particle diameter in the cyclone unit 230 is transferred to the hydrated hydration unit 210 or the crushing unit 220 through the conveying path 260. For example, the conveying path 260 includes a first branching path 263 for conveying the slaked lime from the valve 261 provided in the branching unit to the hydrated hydrating unit 210, and a second branching path 263 for connecting the valve 261 to the crushing unit 220 And may have a second branch path 265 carrying the slaked lime.

The hydrated liquid hydration unit 210 includes a hydration tank 211 in which a mixed liquid is stored, a hydration impeller 213 rotatably coupled to the hydration tank 211, and a hydration impeller 213 rotated by an applied power source And may include a hydration motor 212.

The hydration impeller 213 has an impeller body 201 having a circular plate shape in a plan view as shown in Figs. 3 and 4 and an impeller body 201 for connecting the impeller body 201 to the shaft 212a of the hydration motor 212, And a wing 203 protruding from the impeller body 201 in a state of being spaced apart from the rotary shaft 202.

The wing portion 203 may be elongated toward the edge of the impeller body 201 from a position adjacent to and spaced apart from the rotary shaft portion 202. More preferably, the wing portion 203 may be formed in a spiral shape so as to have predetermined curvature, and a plurality of the wing portions 203 may be arranged radially symmetrically with respect to the rotary shaft portion 202. That is, the wing portions 203 may be arc-shaped, and a plurality of the wing portions 203 may be disposed at regular intervals corresponding to the rotational direction of the impeller body 201.

The hydration impeller 213 may further include a rotation improving part formed at an edge part where the impeller body 201 and the wing part 203 meet. The width of the rotation enhancing portion gradually increases from the rotating shaft portion 202 side toward the edge of the impeller body 201 in a planar state.

That is, the rotation enhancing portion includes a first rotation improving portion 204 formed on the concave portion (inner circumferential side) and a convex portion (outer circumferential side) of the wing portion 203 with reference to the plane shape of the wing portion 203 And a second rotation enhancer 205 that is formed.

When the hydration impeller 213 having the above construction is rotationally driven, the slaked lime can be effectively mixed with the produced water supplied from the water purification plant, and the slaked lime can be mixed and effectively crushed.

The crushing unit 220 includes a crushing tank 221 in which slaked lime or mixed liquor is stored, a crushing impeller 223 rotatably coupled to the crushing tank 221, and a crushing impeller 223 rotated (Not shown).

The crushing impeller 223 has substantially the same configuration as the above-described hydration impeller 213, and a description thereof will be omitted. At this time, by setting the gap between the inner wall of the crushing tank 221 and the edge of the crushing impeller 223 to 0.15 mm to 0.25 mm, it is possible to stabilize crushing and stirring speed of the slaked lime, maximize crushing efficiency, have. As described above, the narrower the gap is, the higher the shearing force transmitted to the material such as the slaked lime is, so that the high grinding efficiency can be expected even at a low stirring speed, and the required power amount can be reduced.

If the gap is smaller than the set value, friction between the pulverizing impeller 223 and the pulverizing tank 221 may be generated, and the amount of power may increase. If the gap is larger than the set value, the pulverization and stirring of the slaked lime are not properly performed, and the yield is lowered due to the phenomenon that the slaked lime is larger than the predetermined particle diameter.

The cyclone unit 230 is provided with a cyclone tank 231 in which the mixed liquor passed through the crushed slaked lime or crushing unit 220 is stored and a cyclone tank 231 disposed at the center of the cyclone tank 231 to form a path through which the slaked lime And a separation screen 233 for passing the slaked lime of predetermined particle size among the slaked lime that moves upward of the separation line 232. [ The conveying path 260 may be connected to the lower part of the cyclone tank 231 and connected to the hydrated hydrating unit 210 or the crushing unit 220. Therefore, when the slaked lime having a particle diameter larger than the preset particle diameter is separated from the cyclone tank 231 through the transport path 260 and then sinked into the slaked lime hydration unit 210 or the crushing unit 220, So that only the slaked lime satisfying the preset particle diameter can be mixed and supplied to the pulverized liquid.

In addition, the dispersion apparatus 200 may further include a dispersion storage unit 240 in which a dispersion liquid is stored. The dispersion liquid is formed by mixing the slaked lime having a predetermined particle size and the production water as described above.

The dispersion liquid storage unit 240 includes a dispersion liquid reservoir 241 connected downstream of the cyclone unit 230 to store the dispersion liquid, a storage impeller 243 rotatably coupled to the dispersion liquid reservoir 241, And a storage motor 242 for rotating the storage impeller.

The storage impeller 243 has substantially the same configuration as the above-described hydration impeller 213, and a description thereof will be omitted.

The dispersion storage unit 240 may further include a water level meter 244 for sensing the level of the dispersion liquid. The water gauge 244 is configured to determine whether the dispersion level of the dispersion is maximally stored in the dispersion reservoir 241 and whether the dispersion is set at a minimum between the low level of the dispersion that is minimally stored in the dispersion reservoir 241 and the low level of the dispersion, You can sense the regulated water level.

The dispersion apparatus 200 includes a dispersion control unit 210 that controls the operation of at least one of the hydrated hydrate hydrate unit 210, the crushing unit 220 and the cyclone unit 230 according to the level of the dispersion liquid storage unit 240, (250).

When the dispersion liquid storage unit 241 is at the full water level or at a preset adjustment level, the dispersion control unit 250 stops the operation of the dispersion apparatus 200. [ The dispersion control unit 250 can prevent the mixed liquor from being transferred from the hydrated hydrating unit 210 to the crushing unit 220 or the cyclone unit 230. [

When the dispersion liquid storage unit 241 is at a low water level, the dispersion control unit 250 operates the dispersion apparatus 200. Further, the operation of the dispersion liquid supply unit 300 is stopped so as to stop the dispersion liquid from being transmitted to the pipeline connection unit 500.

The pipeline connection unit 500 connects the dispersion liquid supply unit 300 and the water line 800.

The pipeline connection unit 500 includes a carbon dioxide injection unit 510 connected to the carbon dioxide supply unit 410, a dispersion injection unit 520 connected to the dispersion liquid supply unit 300, A unit connection portion 530 is provided. The carbon dioxide injecting unit 510, the dispersion injecting unit 520, and the unit connecting unit 530 are sequentially disposed along the direction of being transferred to the water channel 800 of produced water, thereby improving the measurement accuracy.

The dispersion supply unit 300 supplies the dispersion liquid to the water line 800.

The exponent calculation unit 600 measures the calcium ion concentration and the hydrogen ion exponent (pH) in the production water supplied from the unit connection part 530 to the water conduit 800 and measures the calcium ion concentration and the hydrogen ion exponent ) Is used to calculate the corrosion index.

The dispersion injection control unit 700 calculates the injection amount of the dispersion liquid based on at least one of the calcium ion concentration and the corrosiveness index calculated by the index calculation unit 600 and controls the dispersion liquid supply unit 300 based on the injection amount of the dispersion liquid. .

For example, when the target hydrogen ion index is 8.0, the optimum liquid concentration is calculated by injecting the dispersion liquid into the production water so that the calcium ion concentration is 68 mg / L and the alkalinity is 64 mg / L. In addition, when the target hydrogen ion index is 8.5, the optimum injection concentration is calculated by injecting the dispersion liquid into the production water so that the calcium ion concentration is 51 mg / L and the alkalinity is 47 mg / L.

In one embodiment of the present invention, the dispersion injection control unit 700 determines whether the calcium ion concentration is suitable for the target concentration range after calculating the Langmuir Index (LSI) of the corrosivity index, It is possible to determine whether or not the index (LSI, Langelier Saturation Index) is suitable for the target range, and to inject the liquid slaked lime of deficiency. Thus, the Langmuir Index (LSI) and calcium ion concentration of the water to be supplied can be kept constant.

In addition, the corrosion control system of the water pipe 800 based on the lime dispersion apparatus according to an embodiment of the present invention may further include a carbon dioxide storage tank 400 and a carbon dioxide supply unit 410.

Carbon dioxide is stored in the carbon dioxide storage tank 400. At this time, the carbon dioxide may be stored in a gaseous state, compressed and stored in a liquid state.

The carbon dioxide supply unit 410 supplies carbon dioxide in the ideal carbon dioxide storage tank 400 to the water line 800.

At this time, the dispersion injection control unit 700 calculates the injection amount of carbon dioxide based on at least one of the calcium ion concentration and the calculated corrosivity index, and controls the operation of the carbon dioxide supply unit 410 based on the injection amount of the carbon dioxide.

5, a method for controlling the corrosion of a water line 800 based on a calcium hydroxide dispersion apparatus according to an embodiment of the present invention will be described. In the water line 800 based on the calcium hydroxide dispersion apparatus according to an embodiment of the present invention, Can be represented by the control logic of the dispersion injection control unit 700 in the corrosion control system.

The corrosion control method may include a calculation step S10, a concentration comparison step S20, an index comparison step S30, an injection step S40 and an analysis waiting step S50.

In the calculation step S10, the calcium ion concentration and the hydrogen ion index (pH) are measured in the produced water supplied to the water line 800, and the corrosion index is calculated.

In the concentration comparison step S20, the calcium ion concentration calculated in the calculation step S10 is compared with a predetermined unit concentration range. In the density comparison step S20, the predetermined unit concentration range may be equal to or greater than 50 and equal to or less than 200. [ More specifically, the predetermined unit concentration range may be equal to or greater than 80 and equal to or less than 150.

The index comparing step S30 compares the caustic index calculated in the calculating step S10 with a preset unit index range. In the exponent comparison step S30, the predetermined unit exponent range may be equal to or greater than -0.5 and equal to or less than 0.5.

The step of injecting S40 may be carried out in such a manner that at least one of the case where the calcium ion concentration calculated in the calculating step S10 is out of the predetermined unit concentration range and the case where the corrosion index of the calculating step S10 is out of the predetermined unit exponent range The injection amount of the dispersion liquid is calculated based on at least one of the calcium ion concentration and the calculated corrosivity index, and the amount of the dispersion liquid is adjusted based on the injection amount of the dispersion liquid. In the injection step S40, the operation of the dispersion liquid supply unit 300 is controlled to adjust the amount of the dispersion liquid.

In the case of at least one of the case where the calcium ion concentration in the calculation step deviates from the preset unit concentration range and the case where the corrosion index in the calculation step is out of the predetermined unit exponent value range, the implanting step (S40) The amount of carbon dioxide injected is calculated based on at least one of the calculated corrosion indexes and the amount of carbon dioxide injected is adjusted based on the amount of carbon dioxide injected. The injection step can control the operation of the carbon dioxide supply unit 410.

In the analysis waiting step S50, when the calcium ion concentration calculated in the calculating step S10 is included in the preset unit concentration range and the corrosion index of the calculating step S10 is included in the predetermined unit exponent range, During the waiting time, the measurement of calcium ion concentration and hydrogen ion index (pH) in production water is suspended.

In addition, the corrosion control system for a water pipe 800 based on the calcium hydroxide dispersion apparatus according to an embodiment of the present invention may further include a calcium hydroxide storage tank 100 and a calcium hydroxide hydrate supply unit 110.

The slaked lime storage tank 100 stores powdered or solidified slaked lime.

The slaked lime feeding unit 110 supplies the slaked lime of the slaked lime storage tank 100 to the slaked lime hydration unit 210 or the crushing unit 220.

According to the corrosion control system of the present invention based on the above-described calcium hydroxide dispersion system, when the production water produced in the water purification plant 900 is supplied to the water line 800, By controlling the injection amount, corrosion of the water line 800 due to the produced water can be suppressed or prevented.

In addition, the present invention can physically pulverize the liquid slaked lime in water mixed with water produced in a water purification plant, and homogenize it through the cyclone unit 230 and the separation screen 233.

In addition, the present invention can appropriately separate the slaked lime of the physically pulverized large particle size distribution according to the particle size through the cyclone unit 230. In addition, the slaked lime separated from the cyclone unit 230 is transported to a physical grinding process, and a small amount of unsolidified lime particles can be separated through the separation screen 233.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Modify or modify the Software.

100: slaked lime storage tank 110: slaked lime feeding unit 200: dispersing device
210: slaked lime hydration unit 211: hydration tank 212: hydration motor
213: hydration impeller 220: crushing unit 221: crushing tank
222: crushing motor 223: crushing impeller 230: cyclone unit
231: Cyclone tank 232: Separation pipe 233: Separation screen
240: dispersion liquid storage unit 241: dispersion liquid storage tank 242: storage motor
243: Storage impeller 244: Water level meter 250: Dispersion control unit
201: impeller body 202: rotary shaft portion 203: wing portion
204: first rotation improving unit 205: second rotation improving unit 300: dispersion liquid supplying unit
400: Carbon dioxide storage tank 410: Carbon dioxide supply unit
500: pipeline connection unit 510: carbon dioxide injection unit 520: dispersion liquid injection unit
530: Unit connection part 600: Index calculation unit
700: Dispersion injection control unit 800: Water pipeline 900: Water purification plant
SL: slaked lime S10: measurement step S20: concentration comparison step
S30: Index comparison step S40: Injection step S50: Analysis waiting step

Claims (6)

A dispersing device for producing a liquid-state dispersion by mixing powdered or solid slaked lime having a predetermined particle diameter and production water produced in a water purification plant;
A pipe connecting unit connecting the water purification plant and the water pipe;
A dispersion liquid supply unit for supplying the dispersion produced in the dispersion apparatus to the pipeline connection unit;
An index calculating unit for measuring a calcium ion concentration and a hydrogen ion index (pH) of the produced water supplied to the water line and calculating a corrosion index using at least one of the measured calcium ion concentration and the hydrogen ion index (pH) ; And
And a dispersion liquid injection control unit for calculating an injection amount of the dispersion liquid based on at least one of the calcium ion concentration and the corrosiveness index and controlling the operation of the dispersion liquid supply unit based on the injection amount of the dispersion liquid Based corrosion control system based on lime dispersion. 2. The image forming apparatus according to claim 1,
A hydrated lime hydration unit for mixing the hydrated lime of powder or solid state with the production water produced in the water purification plant to produce a mixed liquor;
A crushing unit for crushing the slaked lime contained in the mixed liquid so that the slaked lime contained in the mixed liquor mixed in the hydrated lime hydration unit has a predetermined particle diameter; And
And a cyclone unit for separating the slaked lime of predetermined particle size from the slaked lime contained in the mixed liquor treated in the crushing unit. 3. The method of claim 2,
Further comprising a dispersion storing unit for storing a dispersion liquid formed by mixing the slaked lime having the predetermined particle size and the produced water. The method of claim 3,
Further comprising a dispersion control unit for controlling operation of at least one of the hydrated hydrometric hydrants, the crushing units, and the cyclone units according to the level of the dispersion liquid storage unit. Control system. 3. The method of claim 2,
Further comprising a slaked lime circulation path for re-supplying the slaked lime separated from the cyclone unit to the slaked lime hydration unit or the crushing unit. 6. The method according to any one of claims 1 to 5,
A carbon dioxide storage tank in which carbon dioxide is stored in a state of at least one of a gaseous state and a liquid state; And
And a carbon dioxide supplying unit for supplying the carbon dioxide to the pipe connecting unit,
Wherein the dispersion injection control unit comprises:
Wherein the amount of carbon dioxide injected is calculated based on at least one of the calcium ion concentration and the corrosiveness index and the operation of the carbon dioxide supplying unit is controlled based on the amount of the carbon dioxide injected. Corrosion control system.

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