KR102069319B1 - Feeding system for liquid lime hydrate - Google Patents

Abstract

The present invention relates to a liquid slaked lime injection system which is capable of stirring a reference concentration of liquid slaked lime not to be precipitated. The liquid slaked lime injection system comprises: liquid slaked lime stirring tanks (100, 100a); a pure water preparation device (200); an air injection type mixing device (500); a liquid slaked lime injection device (400); and a control unit (600).

Description

Liquid Lime Lime Injection System {FEEDING SYSTEM FOR LIQUID LIME HYDRATE}

The present invention relates to a liquid lime injection system, and more particularly to a liquid lime injection system that can adjust the pH in the water treatment process.

Alkaline agents (pH regulators) mainly used in the chemical injection process used in domestic water purification plants are caustic soda (NaOH), powdered lime (Ca (OH) 2), liquid lime (Ca (OH) 2), and soda ash (Na2 CO3). ) Is such a drug.

In the case of domestic water quality, caustic soda and powdered lime have been used mainly because pH, alkalinity and hardness are much lower than those of foreign water, but caustic soda has a limit in alkalinity and hardness increase, and powdered lime is inconvenient due to dust and injection volume control. Due to the recent trend of liquid lime injection method.

Caustic soda has lower alkalinity increase rate than liquid lime and powdered lime, but the pH increase rate is similar. Increasing the amount of caustic soda to increase alkalinity can cause the pH to rise, leaving the flocculation range and causing scale problems in the tube.

On the other hand, the use of liquid lime or powdered lime promotes floc growth because Ca ions are added to the water. However, caustic soda turned out to be significantly lower than that of liquid lime.

Alkaline is used when the alkalinity is low, but in practice, it is used during poor mixing and aggregation caused by lack of ions such as Ca and Mg in water. These divalent cations are factors that promote miscation and aggregation, and the lack of these leads to longer time to form flocs.

Liquid calcined lime can solve various problems in powdered lime, cost problems of caustic soda (NaOH), and complaints about human hazards, and the use of liquid calcareous chemicals for the production of high quality purified water is expanding.

Liquid hydrated lime is a liquid hydrated lime made of lime powder and water at a concentration of 20% by a special manufacturing method, and exists in an unstable state in a mixed form.If proper stirring is not performed, it precipitates after a certain time, causing water and lime to It will cause a phenomenon of separation. In this case, it can be almost impossible or very difficult to get back to 20% liquid state.

Therefore, there is a need to develop a technology that allows water and slaked lime to exist in a liquid state at 20% concentration without being separated.

In addition, even when stirring is performed, if a general stirring apparatus is installed without considering the characteristics of the liquid lime, the slurry may be laminated in the four sections without proper stirring.

Utility Model Registration No. 20-0239357 "Slaked lime injection equipment using multi ejector and multi static mixer"

An object of the present invention is to solve the above problems, to provide a liquid lime injection system that can be stirred so that the liquid lime does not precipitate at the reference concentration.

Another object of the present invention is to provide a liquid calcined lime injecting system capable of quantitatively injecting liquid calcined lime at a reference concentration into a capping well to bring the pH concentration of the raw water of the capping well to a target pH.

Still another object of the present invention is to provide a liquid lime injection system capable of stably transporting a liquid lime of a reference concentration to a landing well at a distance.

Still another object of the present invention is to provide a liquid lime injection system, which can be periodically cleaned to prevent the occlusion of the liquid lime lime stirring tank and the supply pipe and the dilution water pipe.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

An object of the present invention can be achieved by a liquid lime injection system to supply a liquid lime lime whose concentration is constantly adjusted to a reference concentration to the impingement crystal so that the pH of the impregnated crystal to the target pH. Liquid lime lime injection system of the present invention, the liquid lime lime stirring tank (100, 100a) for stirring the liquid lime injected from the liquid lime storage tank to a reference concentration; A pure water manufacturing apparatus 200 for preparing a backwash water as pure water for washing the liquid lime lime stirring tank 100 and 100a and supplying the pure water to the liquid lime lime stirring tank 100 and 100a; An air spray-type admixture (500) for supplying the liquid-calcined lime of a reference concentration supplied from the liquid-calcified lime stirring tank (100, 100a) to the landing well using a vacuum pressure; A liquid calcined lime feeding device 400 which is provided between the liquid calcined lime mixing tank 100 and 100a and the air spray type blending apparatus 500 to supply a predetermined amount of liquid calcined lime to the air spray type blending apparatus 500; After measuring the shear pH of the crystallization well, the liquid calcined lime of the reference concentration is always supplied to the crystallization well so that the pH of the rear end of the crystallization lime stirring tank (100, 100a) and the pure water production apparatus (200) And a control unit 600 for controlling the air spraying type mixing apparatus 500 and the liquid lime filling apparatus 400, and the liquid lime filling apparatus 400 is supplied from the liquid lime filling stirring tanks 100 and 100a. The liquid slaked of the standard concentration is supplied to the air-jet mixed admixture 500 as much as the input amount according to the instruction of the control unit 600, and the input amount is the liquid calcined lime moved to the shear pH and the air-jet mixed admixture 500 of the landing well. It is characterized in that it is calculated by the flow rate of.

According to one embodiment, the magnetized water production apparatus 300 to generate the magnetized water using the backwashing water, to supply to the liquid-calcified lime input device 400 and the air-jet mixing device 500 to reduce the solidification of the liquid slaked lime (300) ) May be further included.

According to one embodiment, the liquid calcined lime stirring tank (100,100a), the liquid calcined lime inlet pipe 111 and the liquid calcined lime (A ') adjusted to the reference concentration to the liquid calcined lime injecting device 400 And a stirring tank body 110, each provided with a slaked lime discharge pipe 114; A stirring device 120 provided in the vertical direction in the stirring tank body 110 to stir so that the liquid lime does not precipitate (A ′) therein; and the pure water supplied from the pure water manufacturing device 200 is stirred. And a storage tank sprayer 130 for spraying the inside of the tank body 110 to wash the inside of the stirred tank body 110, and the stirring apparatus 120 may be driven on an inner wall surface of the stirred tank body 110. At this time, the fluid barrier plate 117, which floats the liquid calcined lime inside, protrudes toward the radially inner side, and the plurality of mixing holes 117a are formed in the plate surface of the fluid barrier plate 117 along the height direction. Can be.

According to one embodiment, the stirring device 120, the drive shaft 129 provided perpendicular to the central region of the stirring tank body 110; An upper stirrer 121 coupled to an upper region of the drive shaft 129 and stirring the liquid lime in a downward direction when the drive shaft 129 is rotated; An intermediate stirrer 123 coupled to an intermediate region of the drive shaft 129 and for stirring the liquid calcined lime downward when the drive shaft 129 is rotated; A lower stirrer 125 coupled to a lower region of the drive shaft 129 and for stirring the liquid slaked upwards when the drive shaft 129 rotates; It may be coupled to the drive shaft 129 on the outside of the stirring tank body 110, it may include a stirring shaft drive unit 127 for rotating the drive shaft 129.

According to one embodiment, the liquid lime lime stirring tank (100, 100a) is provided with a plurality, when the remaining amount of liquid lime is less than the set height, the remaining liquid lime lime to the neighboring liquid lime lime stirring tank (100,100a) The inside of the container may be periodically cleaned by driving the storage tank cleaner 130.

According to one embodiment, it further comprises a densitometer 119 which is provided at the lower portion of the stirring bath body 110 to measure the concentration of the liquid slaked therein, the densitometer 119 using a sound wave measuring sensor (119a) It is possible to convert the sound speed required when receiving sound waves emitted from one side from the other side to the concentration.

The liquid lime injection system according to the present invention is provided with a stirring device inside the liquid lime stirring tank so that the liquid lime having a high specific gravity is not precipitated so that the liquid lime is not precipitated and maintains the standard concentration.

In addition, the liquid calcined lime stirring tank is provided in plural, and periodically moves the liquid calcined lime to another liquid calcined lime stirring tank to perform washing to prevent the slurry or the like from adhering to the stirring vessel body.

In addition, the backwash water is moved through the slurry inflow preventing valve to prevent the slurry from sticking around the slurry inflow preventing valve.

In addition, the liquid calcined lime injection system of the present invention continuously measures the pH concentration of the watering well and the mixed paper in the control unit, and undergoes a process of feeding back the pH concentration of the mixed paper to reach the target pH.

In addition, the liquid calcined lime injection system of the present invention can reliably transfer the liquid calcined lime at a reference concentration to a landing well at a remote location using a vacuum pressure.

1 is a system diagram showing the overall configuration of the liquid lime injection system according to the present invention,
Figure 2 is a schematic diagram showing a concentration maintenance process of the liquid lime injection system according to the present invention,
Figure 3 is a schematic diagram showing the configuration of the liquid lime stirring tank of the liquid lime injection system according to the present invention,
Figure 4 is an exemplary view showing a stirring process of the liquid lime lime stirring tank of the liquid lime injection system according to the present invention,
5 is an exemplary view showing a concentration measurement process of the concentration meter of the liquid lime stirring tank according to the present invention;
Figure 6 is a cross-sectional view showing the configuration of a magnetized water manufacturing apparatus of the magnetized water production apparatus of the liquid lime injection system according to the present invention,
Figure 7 is a schematic diagram showing the configuration of the liquid lime input device of the liquid lime injection system according to the present invention,
8 is a schematic view showing the configuration of an air-jet mixing apparatus of the liquid lime injection system according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

1 is a system diagram showing the overall configuration of the liquid lime injection system 1 according to the present invention. The flow shown in solid lines in FIG. 1 shows the flow of liquid lime (A '), pure water (F), magnetized water (M), and the like, and the flow shown in dashed lines shows the control flow of the controller 600.

As shown in the liquid calcined lime injection system 1 according to the present invention, the liquid calcined lime (A ') of the liquid calcined lime storage tank 10 is stirred at a reference concentration, and then supplied to the impregnated well 20 to supply the raw water of the impregnated well 20. To reach the target pH.

  The liquid lime injection system (1) is supplied with liquid lime from the liquid lime storage tank (10) and a pair of liquid lime stirring tank (100, 100a) and agitated to a standard concentration, liquid lime lime stirring tank (100, 100a) and It is disposed spaced apart and provided on one side of the pure water manufacturing apparatus 200 for supplying pure water (F) for maintaining or washing the concentration of the liquid lime lime stirring tank (100,100a), the liquid lime (A ' Amount of magnetized water production apparatus 300 for generating and supplying magnetized water (M) for reducing solidification) and liquid lime (A ') supplied from the liquid calcined agitating tank (100,100a) are introduced into the landing well (20). Liquid-lime lime input device 400 for adjusting the liquid-slimed lime (A ') supplied from the liquid lime-lime input device 400, and the air jet type admixture 500 for transferring to the landing well 20, and the landing well 20 Measure the pH of the front and rear ends of the raw water to reach the target pH. A control unit 600 for controlling.

2 is a system diagram showing a process of maintaining the concentration of the liquid lime in the liquid lime injection system 1, Figure 3 is a schematic diagram showing the configuration of the liquid lime stirring tank (100,100a), Figure 4 is a liquid lime lime stirring tank (100,100) Exemplary diagram illustrating a stirring process of a).

A pair of liquid lime stirring tanks (100, 100a) is supplied from the liquid lime storage tank (10) to the liquid lime (A ') to maintain a standard concentration while stirring to prevent precipitation, liquid lime lime input device (400) A ').

Since the pair of liquid lime stirring tanks 100 and 100a have the same configuration, only the first liquid lime stirring tank 100 will be described in detail.

As shown in FIG. 3, the first liquid lime lime agitating tank 100 is provided in the agitating vessel body 110 and the agitating vessel body 110 to stir the liquid calcined lime (A ′) inside thereof. And, the storage tank washing machine 130 for washing the stirring tank body 110, the liquid lime transfer unit 140 for moving the second liquid lime lime stirring tank (100a) and the liquid lime (A '), and the first liquid phase It includes a support frame 150 for supporting the slaked lime stirring tank (100).

Here, the liquid lime injection system 1 according to the present invention is adjusted to a reference concentration of 20% liquid lime (A ') to supply the impingement (20). The reference concentration of the liquid lime (A ') may vary depending on the case.

Stirring tank body 110 provides a space in which the liquid lime (A ') of the reference concentration is stirred. One side of the stirring tank body 110 is provided with a liquid lime lime inlet pipe (111) receiving liquid lime (A ') from the liquid lime storage tank (10) and a lower portion of the liquid lime lime (A') Recovery to recover the liquid lime (A '), which is provided in a direction opposite to the drain pipe 112 and the liquid lime inflow pipe 111 discharged to the tank (100a) and moved from the second liquid lime lime stirring tank (100a) Tube 113, the liquid lime lime discharge pipe 114 for discharging the stirred liquid lime (A ') to the liquid lime injection device 400, and the liquid calcined lime is provided to protrude to the inner wall surface of the stirring tank body (110) A ') a fluid barrier plate 117 to increase the stirring efficiency of the agitation, a pressure level gauge 118 provided at the lower portion of the stirring tank body 110 to sense the water level inside the stirring tank body 110, and a stirring tank It is provided inside the main body 110 includes a densitometer 119 for detecting the concentration of the liquid lime (A ').

Liquid-calcined lime inlet pipe 111 is connected to the liquid-calcined lime storage tank 10 receives the liquid-calcined lime (A). The liquid calcined lime inlet pipe 111 is provided with a switching electric valve 111a. The switching electric valve 111a is driven on / off by the control of the control unit 600 to control whether the liquid slaked lime is supplied to the stirring vessel body 110.

When the inside of the first liquid lime storage tank 10 needs to be cleaned, the drain pipe 112 discharges the liquid calcined lime A 'remaining therein. The drain pipe 112 is connected to the liquid lime transfer tube 142 of the liquid lime transfer unit 140, or is connected to the wastewater treatment pipe 145. The drain pipe 112 is provided with a drain electric valve 112a. The drain electric valve 112a is driven on / off under the control of the controller 600.

When the recovery pipe 113 needs to clean the inside of the second liquid lime storage tank 10, the liquid lime (A ′) remaining in the second liquid lime storage tank 10 is recovered. The recovery pipe 113 is provided with a recovery electric valve 113a. The recovery electric valve 113a is driven on / off under the control of the control unit 600.

Liquid-calcined lime discharge pipe 114 discharges the liquid-calcined lime (A ') to the liquid-calcined lime injecting apparatus 400. The inlet of the liquid calcined lime discharge pipe 114 is provided with a slurry inflow preventing valve 114a, and an input amount control valve 114b is provided on the pipeline.

Slurry inflow preventing side 114a blocks the introduction of the slurry into the liquid lime discharge pipe 114. Slurry inflow preventing side 114a is a structure that blocks the slurry of a predetermined size or more as the washing water nozzle 115c and the washing water hose 115b is connected to the inside of the tube to supply the magnetized water after a certain time, the slurry inflow preventing side 114a It is removed by spraying with a slurry stacked on top. As a result, the slurry flows into the liquid lime discharge tube 114 and the liquid lime discharge tube 114 can be prevented from being blocked.

 The input amount control valve 114b is opened and closed by the control of the controller 600 and adjusts the amount of liquid lime which is supplied to the liquid lime input device 400.

As shown in FIG. 3, the liquid lime lime discharge pipe 114 is coupled to the internal wash water inlet pipe 115 and the external wash water inlet pipe 116, respectively. The internal wash water inlet pipe 115 is coupled to the internal wash water power valve 115a, and the external wash water inlet pipe 116 is provided with the external wash water power valve 116a. The internal wash water inlet pipe 115 is connected to the washing water hose 115b, and the washing water nozzle 115c is provided at an end thereof.

The internal wash water inlet pipe 115 allows the magnetized water (M) to flow into the stirred tank body 110 to wash the slurry therein. The magnetized water (M) is moved through the washing water hose 115b and then injected into the stirring tank body 110 through the washing water nozzle 115c.

The external washing water inlet pipe 116 supplies the magnetized water (M) to the liquid lime discharge tube 114 to which the liquid lime (A ') is moved to wash the slurry of the liquid lime discharge tube (114).

The fluid barrier plate 117 is formed to protrude radially inward on the inner wall surface of the stirring tank body 110 so that the stirring flow is improved when the liquid calcined lime A 'is stirred by the stirring apparatus 120. As shown in (a) of FIG. 4, the fluid barrier plate 117 is disposed at 180 degree intervals or 90 degree intervals on the inner wall surface of the stirring tank body 110.

When the liquid lime (A ') is stirred by the stirring device 120 is moved from the bottom to the upper direction, the liquid lime (A') heavy gravity hits the fluid barrier plate 117, the resistance is generated and the upward direction Will be moved.

The fluid barrier plate 117 is formed to have a certain curvature when viewed from the front as shown in FIG. 4 (b), and a plurality of mixing holes 117 a are formed along the height direction. Liquid calcined lime (A ') hits the fluid barrier plate 117 and passes through the mixing hole (117a) will be made at the same time mixing and injury.

When the liquid lime (A '), which is a fluid, collides with the fluid barrier plate (117) attached in a curved shape, it floats upward along the line, and when the liquid lime (A') flows into the mixing hole (117a), it is mixed and floated. At the same time, it is formed and a continuous flow is maintained to maintain proper concentration as well as proper mixing. Thereby, the power required for the stirring of the stirring apparatus 120 can also be reduced.

The pressure level meter 118 converts the pressure into a water level and accurately detects the level of the liquid slaked lime A 'inside the stirring vessel body 110 and transmits it to the control unit 600.

Densitometer 119 measures the concentration of the liquid calcined lime (A ') inside the stirring bath body 110 and transmits to the control unit 600. 5 is an exemplary view showing a concentration measurement process of the densitometer 119 according to the present invention.

As shown, the densitometer 119 has an acoustic wave sensor 119a. Densitometer 119 generates a sound wave (C) on one side, and receives a sound wave (C) on the opposite side. At this time, the sound wave (C) is received, the concentration is measured in the form of measuring and converting the difference in the sound speed. The sound wave transmitter transmits sound waves in a predetermined pattern in the form of a transmitter to the sound wave measurement sensor 119a having a constant interplanar distance d, and receives them at a receiver located on the opposite side. Each time it is sent from the transmitter to the receiver, the medium B varies depending on the concentration of the liquid lime.

Since the time at which the speed of sound reaches a certain time varies depending on the concentration of liquid calcined lime, the concentration can be calculated according to the speed (m / s) of the speed of sound reached. For example, the liquid lime concentration may be 1,000 m / s when the concentration is 10%, 1,500 m / s when the concentration is 15%, and 2000 m / s when the concentration is 20%.

Concentration measurement method of liquid lime is composed of sound wave transmission, sound wave reception, sound wave measurement, sound velocity conversion, formula (standard concentration of liquid lime), temperature measurement (temperature compensation), sound velocity to concentration, and concentration display.

The stirring device 120 agitates the liquid calcined lime A 'inside the stirring tank body 110. Since the chemical characteristics of liquid lime are mixed with water and slaked lime, if proper stirring and mixing are not performed, the lime is precipitated to generate slurry, causing various concentrations such as irregular concentration, high viscosity slurry, and reduced stirring efficiency.

Liquid lime has a heavy specific gravity, so there is a limit to floating the liquid lime in general stirring. Stirring device 120 according to the present invention is provided so as to float while mixing the liquid lime (A ') to the top by the stirring force.

As shown in FIG. 4A, the stirring device 120 includes a drive shaft 129 disposed perpendicular to the center area of the stirring tank body 110, and an upper stirrer 121 provided on the drive shaft 129. ), The intermediate stirrer 123 provided in the middle of the drive shaft 129, the lower stirrer 125 provided at the lower portion of the drive shaft 129, and the drive shaft 129 rotated in the outside of the stirring tank body 110. It includes a stirring shaft drive unit 127 for generating a driving force.

The stirring shaft drive unit 127 is rotated under the control of the control unit 600. The stirring shaft driving unit 127 is provided at the outside of the stirring tank body 110 and the support frame 150. Stirring shaft drive unit 127 is made of a continuous rpm speed control to maintain the liquid lime (A ') at a reference concentration of 20%. The drive shaft 129 coupled to the stirring shaft driver 127 is rotated in conjunction with the rpm of the stirring shaft driver 127.

The upper stirrer 121 is provided with a hydrofoil or pitch blade type impeller composed of four wings for stirring down the liquid calcined lime above the predetermined level above the stirring vessel body 110. Intermediate stirrer 123 is provided with a hydrofoil or pitch blade type impeller consisting of four wings for stirring down the liquid calcined lime above the predetermined level in the middle of the stirring vessel body (110). The lower stirrer 125 is provided with a pitch blade type impeller composed of four blades for floating the liquid slaked lime of the lower high viscosity slurry without being precipitated.

The stirring device 120 allows the liquid calcined lime A 'to be stirred together with the fluid barrier plate 117 as shown in FIG.

Here, the liquid lime is a phenomenon in which the water evaporates after a certain time due to the reaction heat generated naturally while stirring and the period stored in the liquid lime lime stirring tank (100,100a) due to the chemical properties. In addition, while the liquid calcined lime stored in the first liquid calcined stirring tank (100,100a) is periodically repeated filling and use, the solid material attached to the outer wall of the liquid calcined stirring tank (100,100a) and the stirrer (121,123,125) of the stirring device 120 ( Slurry) is precipitated as it falls and serves to increase the concentration of liquid lime.

In addition, the dropped solids stay in the lower portion, thereby increasing the load of the stirring apparatus 120, and the slurry flows into the liquid lime lime discharge pipe 114 in the process of being supplied to the liquid lime lime injector 400 to block the phenomenon. Will cause.

Accordingly, in the present invention, when the water level drops by interlocking the pressure level gauge 118 and the storage tank washing machine 130, the pure water (F) is injected from the storage tank washing machine 130 and the liquid lime storage tank 10 and the stirring tank body ( 110) and the liquid slaked solids (slurry) attached to each of the stirrers 121, 123 and 125 of the stirring device 120 to prevent the concentration of the liquid slaked lime due to the slurry to be changed. Check the liquid lime concentration in the concentration meter.

The first liquid lime stirring tank 100 periodically applies a predetermined time when the internal water level is changed according to the amount of liquid lime (A ') in order to maintain the concentration of the liquid lime in a constant concentration. Spray to prevent the solidification through the washing process.

Storage tank washing machine 130 sprays the pure water (F) to wash the liquid limestone storage tank 10 and the stirring tank main body 110 or to maintain the internal concentration. 3 is an exemplary view illustrating a process of washing pure liquid is injected into the liquid lime storage tank 10 and the stirring tank body 110. As shown, the storage tank washing sprayer 130 is provided at the end of the pure water inlet pipe 131, the pure water flow control valve 133, and the pure water inlet pipe 131 to spray pure water nozzle 135 for spraying pure water. Include.

Pure water inlet pipe 131 is connected to the pure water manufacturing apparatus 200 receives the pure water. The pure water flow control valve 133 adjusts the amount of pure water introduced into the inside by the control of the controller 600. The flow rate of pure water supplied to the inside is linked to the internal water level measured by the pressure level gauge 118. The pure spray nozzle 135 sprays pure water F into the stirring tank body 110.

That is, when the water level measured by the pressure level gauge 118 decreases and the concentration of the liquid lime (A ') is higher than the reference concentration, the pure water is sprayed into the liquid lime lime storage tank 10 and the stirring tank body 110 to increase the concentration. Adjust to the standard concentration. Thereby, solidification of liquid lime (A ') can also be prevented.

The liquid lime transfer unit 140 is a liquid lime in the first liquid lime lime stirring tank 100 when the slurry in the liquid lime storage tank 10 and the stirring tank body 110 to wash the slurry through the internal washing water inlet pipe 115 (A ') is used to transfer to the second liquid lime stirring tank 100a. On the contrary, it is used to transfer the liquid calcined A 'of the second liquid calcined agitator 100a to the first liquid calcined agitator 100 for washing the slurry inside the second liquid calcined agitator 100a.

The liquid lime transfer unit 140 is a liquid lime transfer tube 142 connected together with the liquid lime transfer pump 141 and the drain pipe 112 of the pair of liquid lime transfer stirring tanks 100 and 100a as shown in FIG. 1. And, the liquid lime transfer pump 141 and the liquid lime transfer pipe 143 for connecting the recovery pipe 113.

 Internal washing is performed when the level of the first liquid lime stirring tank 100 corresponds to the slurry inflow preventing side 114a. If the water level measured by the pressure level gauge 118 corresponds to the height of the slurry inflow preventing valve 114a, the control unit 600 closes the input flow control valve 114b, and the slurry and solid matter attached to the slurry inflow preventing valve 114a. The internal washing water motor valve 115a is opened and cleaned. Then, the external washing water power valve 116a is opened to clean the liquid lime discharge pipe 114.

In addition, the control unit 600 drives the drain electric valve 112a to discharge the remaining liquid calcined lime A 'inside the stirring vessel body 110 to the drain pipe 112. When the liquid lime transfer pump 141 is driven, the liquid lime is discharged through the drain pipe 112 of the stirring tank body 110 to the recovery pipe 113 of the second liquid lime lime stirring tank 100a. Inflow.

At this time, the control unit 600 drives the pure water flow control valve 133 to spray the pure water of the pure water spray nozzle 135 into the liquid lime lime storage tank 10 and the stirring tank body 110 at a high pressure to wash the inside. do. When both the pure water washing liquid and the remaining liquid lime (A ') are transferred to the second liquid lime stirring tank (100a), the control unit 600 turns off the drain electric valve (112a). When residual foreign matter remains inside the stirring tank body 110, the drain electric valve (112a) is turned on, and sent to the wastewater treatment pipe (145).

Then, the control unit 600 again opens the pure water flow control valve 133, and sprays pure water at a high pressure through the pure water spray nozzle 135 to wash the liquid calcite storage tank 10 and the stirring tank body 110 inside. .

In this manner, the first liquid lime stirring tank 100 and the second liquid lime stirring tank 100a are periodically washed.

The pure water manufacturing apparatus 200 manufactures pure water necessary for maintaining and washing the concentration of the pair of liquid lime stirring tanks 100 and 100a. The pure water producing apparatus 200 includes a backwash water inlet pipe 210 and a pressurized pump 220 for supplying the backwash water R to the pure water producing apparatus 200 or the magnetized water producing apparatus 300 as shown in FIG. 1. And, the first pressure transmission system 230 for measuring the conveying pressure of the pressure pump 220, pure water manufacturing 250 for producing the backwash water (R) supplied through the pressure pump 220 with pure water, Pure water supply flow meter 260 for measuring the flow rate of the pure water provided on the pipe for moving the pure water (F) to the pure water inlet pipe 131, and second pressure transmitter 270 for measuring the supply pressure of the pure water It includes.

Pure water manufacturing 250 is provided in pairs, and converts the backwash water (R) to pure water (F) by divorce exchange resin. The pure water supply flow meter 260 measures the flow rate of pure water supplied to maintain the concentration of the first liquid lime stirring tank 100 at the reference concentration.

The magnetized water production apparatus 300 reduces the solidification of the liquid lime by supplying the magnetized water to the liquid lime (A ') at a reference concentration that is moved through the liquid calcined lime injector 400 and the air spray-type admixture 500.

The magnetization water production apparatus 300 includes a backwash water supply pipe 320 for supplying backwash water to the backwash water transport pipe 310, the internal washwater inflow pipe 115, and the external washwater inflow pipe 116, as shown in FIG. 1. , The magnetized water maker 330 for manufacturing the backwash water R transferred through the backwash water transport pipe 310 as the magnetized water M, and the magnetized water discharge pipe 340 for discharging the magnetized water M manufactured in the magnetized water maker 330. ).

The backwash water R supplied by the pressure pump 220 is supplied to the magnetized water maker 330 through the backwash water transport pipe 310. At this time, the backwash water R through the backwash water supply pipe 320 branched from the backwash water transport pipe 310 is connected to the internal liquid wash lime discharge pipe 114 of the stirring tank body 110 and the outside 115 It is supplied to the wash water inlet pipe (116).

6 is a cross-sectional view showing a side cross-section and a planar cross-sectional configuration of the magnetized water producer 330. As shown, the magnetizer maker 330 includes a magnetizer casing 331, a magnetizer cap 333 blocking an end of the magnetizer casing 331, and magnetization water provided at a predetermined interval inside the magnetizer casing 331. And a magnetization water reactor 337 provided between the mixing plate 335, the magnetization water mixing plate 335, and a fixed shaft 339 provided in the center region of the magnetizer casing 331.

As shown in the planar cross-sectional view along the line BB, a fixed shaft 339 is provided in the center region of the magnetizer casing 331, and the magnetized water mixing plate 335 is disposed at a predetermined interval along the height direction of the fixed shaft 339. A plurality of magnetized water reactors 337 are disposed radially with respect to the fixed shaft 339 between the adjacent magnetized water mixing plate 335.

The backwash water (R) introduced through the backwash water transport pipe (310) is introduced into the magnetizer casing (331), is mixed between the magnetization water mixing plate (335), and the reaction occurs in the magnetization water reactor (337), causing the magnetization water (M). Generated and then discharged.

The magnetization water reactor 337 employs a neodymium magnet, which is a rare earth permanent magnet. The neodymium magnet has a surface magnetic field of about 5,500Gus or more and the material is made of STS304 or more. When a plurality of neodymium magnets are installed in the magnetizer casing 331 to face each other in parallel, and water passes through the magnetization water reactor 337, the molecular structure of the water is ion-activated, and water molecules collide with each other through rapid mixing to increase water activity. Is formed.

Liquid-calcified lime injecting device 400 quantitatively inputs the liquid calcined lime (A ') of the reference concentration supplied from the liquid-lime lime stirring tank (100,100a) to the air spray type admixture (500) by the input amount according to the instructions of the control unit 600. .

7 is a schematic diagram schematically showing the configuration of the liquid lime injection device 400. Liquid calcite injecting device 400 is the liquid liquefied lime supply pipe 410 to receive the liquid hydrated lime (A ') from the liquid hydrated lime stirring tank (100, 100a), and the control unit 600 of the liquid hydrated lime introduced into the liquid hydrated lime supply pipe (410) It includes a liquid lime injector 440 to move only the input amount set by the instruction of.

The liquid calcined lime supply pipe 410 is provided with an emergency shutoff valve 411, a flow rate correction device 420, and a chemical injector cleaning module 430. The emergency shutoff valve 411 emergencyly blocks the liquid lime which is introduced when the liquid lime is leaked. Flow rate correction device 420 is a correction device for the flow rate quantitative test for each cycle of the liquid lime lime injector 440. The chemical injector cleaning module 430 periodically washes the slurry inside the liquid lime lime inlet pipe 111.

A flow meter washing unit 450, a liquid calcined lime flow meter 460, and a flow sampling meter 470 are provided in a path through which the liquid calcined lime moves from the liquid calcined lime injector 440 to the air spraying admixture 500. The flow meter washing unit 450 periodically washes the slurry in the liquid lime flow meter 460. The liquid slaked lime flow meter 460 measures the liquid slaked lime flow rate that is moved from the liquid slaked lime injector 440 to the air spraying admixture 500. Flow sampler 470 is a quantitative sampling tube for the quantitative test of the flow meter.

On the other hand, the second liquid leak detection sensor 480 is provided on the lower portion of the liquid lime supply pipe 410 to detect the leakage of liquid lime.

The air jet type admixture 500 blends the high pressure air into the liquid calcined lime supplied from the liquid calcined lime injector 400, and transfers the liquid calcined lime dilute water A ″ mixed with the air to the watering well 20.

8 is a schematic diagram schematically showing the configuration of the air-jet mixing device 500. As shown, the air jet type admixture 500 includes a liquid calcite inlet tube 510 to which liquid liquefied lime (A ') is supplied, and an air jet type mixer (520) for diluting air into the dilute liquid lime (A'). , Magnetization water input to supply magnetization water (M) to the liquid supply lime dilution water (A ") supplied from the air injection type mixer 520 to generate air and supply it to the air jet mixer (520) Tube 540.

The liquid slaked lime injection pipe 510 is provided with a wave preventing side 511, an external air input control valve 513, an external air input hourly meter 515, and a vacuum pressure transmitter 517, respectively. The wave preventing edge 511 is a device for preventing the phenomenon that the liquid lime is conveyed by the force of the tube from the liquid lime lime injector 440 continuously generated by the wavelength (wool).

The external air input hourly meter 515 is a valve for controlling air introduced from the outside, and the vacuum pressure transmitter 517 measures the vacuum generating pressure of the air injection type admixture 500.

The air jet type mixer 520 dilutes the air supplied from the air supply unit 530 to the liquid calcined lime supplied from the liquid calcined inlet tube 510 to form the liquid calcined lime diluted water A ″. As a result, the liquid lime diluted (A ") can be transported to the immersion well 20 at a distance.

The upper portion of the air jet mixer 520 is provided with a pressure air jet nozzle 521 and a nozzle hardening inspection window 523, respectively. The pressure air injection nozzle 521 injects the magnetized water and the high pressure air together into the air injection type mixer 520. The nozzle hardening inspection sight window 523 is a perspective window for checking the hardening phenomenon inside the air injection type mixer 520.

The air supply unit 530 supplies high pressure air to the air jet mixer 520. The air supply unit 530 detects the air generator 531, the air moving tube 533 for moving the generated air, the air control valve 535 for adjusting the pressure of the air to be moved, and the pressure of the air to be moved. An air pressure transmitter 537.

The magnetization water inlet pipe 540 supplies the magnetized water to the air jet type mixer 520 and the liquid calcined dilution water (A ") discharge path. The pressure of the magnetized water moved in the path where the magnetized water is supplied to the air jet type mixer 520. A magnetized water pressure transmission system 543 for detecting the and a magnetized water control valve 545 for adjusting the pressure of the magnetized water moved by the control of the control unit 600 is provided.

A scale removing device 541 is provided in the supply path of the diluted liquid slaked lime which is discharged from the air jet mixer 520 and moved to the dilution water injection pipe 27 of the landing well 20. The descaling device 541 is provided for removing the liquid lime lime slurry solidified in the pipe in which the diluted liquid lime is moved to the dilution water spray pipe 27. A pig 542 is provided inside the descaling device 541.

Looking at the operation of the air-jet mixer 520, the magnetized water is introduced at a constant pressure, the magnetized water control valve 545 to adjust the magnetized water to a constant pressure, passing through the air-jet mixer (520) to generate a vacuum pressure do. Diluted with the liquid lime (A ') flowing from the liquid lime input device 400 by the generated vacuum pressure, the liquid lime diluted (A ") is transferred to the dilution water spray pipe (27) of the impingement (20) at a distance. do.

At this time, the high pressure air is supplied from the air generator 531 provided with the blower, the pressure of the air supplied from the air pressure transmitter 537 is measured, and the pressure of the air supplied from the air control valve 535 is measured. The high pressure air controlled by the pressure air injection nozzle 521 of the air jet mixer 520 is injected.

The liquid slaked lime (A ') flowing from the liquid slaked lime injector 440 is uniformly controlled in the wave preventing side 511 and fed into the air spraying mixer 520, and the vacuum pressure transmitter 517 is an air spraying mixer. The vacuum pressure generated at 520 is measured. In order to prevent the wave, the external air input hourly meter 515 and the external air input control valve 513 adjust the air supply amount.

In addition, the magnetization water is supplied to the descaling device 541 at a constant pressure, the pig 542 is mounted inside the descaling device 541, the pig 542 is fired by the magnetizing water pressure, and the fired pig 542 is discharged. Is transported along the movement path of the liquid lime diluted dilute water (A ") to the landing well 20 and removes scale.

The controller 600 controls the overall configuration of the liquid lime injection system 1. That is, the liquid lime lime storage tank 10, the liquid lime lime stirring tank (100, 100a), pressure level gauge 118, liquid lime lime transfer pump (not shown), slurry inflow preventing valve 114a, storage tank washing machine 130, 1 Leakage detection sensor 160, pure water production apparatus 200, pressure pump 220, backwash pump (not shown), liquid slaked lime input device 400, air spray type mixing apparatus 500, magnetized water production apparatus 300 Control all configurations, including the air generator 531, pH meter 610.

The control unit 600 performs the liquid calcined concentration proportional control in order to maintain the target pH of the mixed paper 25 of the impingement well 20.

That is, when the pH target set value is input from the manager, the controller 600 determines the liquid calcined lime input amount of the reference concentration supplied from the liquid calcined agitator tank 100 and 100a. At this time, the input amount is calculated from the pH concentration and the flow rate.

The liquid calcined lime corresponding to the calculated value is introduced into the watering well 20 through the liquid calcined lime injecting apparatus 400 and the air spray-type mixing apparatus 500. After the addition, the raw water meter 611 measures the shear pH value of the raw water. Based on the measured shear pH value, the controller 600 performs a correction for adding or subtracting the liquid lime. It is determined whether or not it agrees with Mokpo set value by input or decrease. The rear end measuring device 613 measures the rear pH value of the mixed paper 25, checks whether the final target pH value is reached, and undergoes an iterative feedback process.

As described above, the liquid lime lime injection system according to the present invention is provided with a stirring device inside the liquid lime lime stirring tank so that the liquid lime is not precipitated with high specific gravity, so that the liquid lime is not precipitated and maintains the standard concentration.

In addition, the liquid calcined lime stirring tank is provided in plural, and periodically moves the liquid calcined lime to another liquid calcined lime stirring tank to perform washing to prevent the slurry or the like from adhering to the stirring vessel body.

In addition, the backwash water is moved through the slurry inflow preventing valve to prevent the slurry from sticking around the slurry inflow preventing valve.

In addition, the liquid calcined lime injection system of the present invention continuously measures the pH concentration of the watering well and the mixed paper in the control unit, and undergoes a process of feeding back the pH concentration of the mixed paper to reach the target pH.

In addition, the liquid calcined lime injection system of the present invention can stably transport the liquid calcined lime at a reference concentration to a landing well at a remote location using a vacuum pressure.

Embodiment of the liquid lime injection system of the present invention described above is merely exemplary, and those skilled in the art to which the present invention pertains that various modifications and equivalent other embodiments are possible. You will know. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims.

1: liquid lime injection system 10: liquid lime storage tank
20: Initiation boat 21: Raw water inlet pipe
23: bulkhead 25: mixed paper
27: dilution water spray pipe 100, 100a: liquid lime lime stirring tank
110: stirred tank body 111: liquid lime lime inlet pipe
111a: electric valve for switching 112: drain pipe
112a: drain electric valve 113: recovery pipe
113a: electric valve for recovery 114: liquid lime discharge pipe
114a: Slurry inflow prevention valve 114b: Input flow control valve
115: internal washing water inlet pipe 115a: internal washing water power valve
115b: Washing water hose 115c: Washing water nozzle
116: external washing water inlet pipe 116a: external washing water power valve
116b: coupling 117: fluid barrier plate
117a: mixing hole 118: pressure level gauge
119: densitometer 119a: sound wave measuring sensor
120: stirring device 121: upper stirrer
123: intermediate stirrer 125: lower stirrer
127: stirring shaft drive unit 129: drive shaft
130: storage tank washing machine 131: pure water inlet pipe
133: pure water flow control valve 135: pure water spray nozzle
140: liquid lime transfer part 141: liquid lime transfer pump
142: liquid lime lime communication pipe 143: liquid lime lime transport pipe
145: wastewater treatment pipe 150: support frame
160: first leak detection sensor 200: pure water manufacturing apparatus
210: backwash water inlet pipe 220: pressurized pump
230: first pressure transmitter 240: electric valve
250: pure water production 260: pure water flow meter
270: second pressure transmitter 300: magnetized water production apparatus
310: backwash water feed pipe 311: magnetization water flow control valve
320: backwash water supply pipe 330: magnetization water maker
331: magnetizer casing 333: magnetizer cap
335: magnetization water mixing plate 337: magnetization water reactor
339: fixed shaft 340: magnetization water discharge pipe
400: liquid lime input device 410: liquid lime supply pipe
411: emergency shutoff valve 420: flow compensation device
430: chemical feeder cleaning module 440: liquid lime feeder
450: flow meter washing unit 460: liquid lime flow meter
470: flow rate sampling meter 480: second leak detection sensor
500: air spray type admixture 510: liquid lime injection tube
511: wave prevention valve 513: external air input control valve
515: External air input quantity gauge 517: Vacuum pressure transmitter
520: air jet mixer 521: pressure air jet nozzle
523: nozzle hardening inspection window 530: air supply unit
531: air generator 533: air moving tube
535: air control valve 537: air pressure transmitter
540: magnetization water input pipe 541: descaling device
542: pig 543: magnetized water pressure transmitter
545: magnetization water control valve 600: control unit
610: pH measuring instrument 611: raw water measuring instrument
613: Back stage measuring instrument
A: liquid lime
A ': Standard concentration liquid lime
A ": liquid lime diluted
B: Medium
C: sound waves
F: pure
G: wastewater storage tank
M: magnetized water
R: backwash water

Claims (6)

In the liquid calcined lime injection system for supplying the liquid lime lime whose concentration is constantly adjusted to the reference concentration to the impingement crystal so that the pH of the impregnated crystal to the target pH
A liquid lime lime stirring tank (100, 100a) for stirring the liquid lime charged from the liquid lime storage tank to a reference concentration;
A pure water manufacturing apparatus 200 for preparing a backwash water as pure water for washing the liquid lime lime stirring tank 100 and 100a and supplying the pure water to the liquid lime lime stirring tank 100 and 100a;
An air spray-type admixture (500) for supplying the liquid-calcined lime of a reference concentration supplied from the liquid-calcified lime stirring tank (100, 100a) to the landing well using a vacuum pressure;
A liquid calcined lime feeding device 400 which is provided between the liquid calcined lime mixing tank 100 and 100a and the air spray type blending apparatus 500 to supply a predetermined amount of liquid calcined lime to the air spray type blending apparatus 500;
After measuring the shear pH of the crystallization well, the liquid calcined lime of the reference concentration is always supplied to the crystallization well so that the pH of the rear end of the crystallization lime stirring tank (100, 100a) and the pure water production apparatus (200) , A control unit 600 for controlling the air injection type mixing device 500 and the liquid lime filling device 400,
The liquid slaked lime input device 400 supplies the liquid slaked lime having a standard concentration supplied from the liquid slaked lime stirring tanks 100 and 100a to the air-jet mixed admixture 500 as much as an input amount according to the instruction of the controller 600. The injection amount is a liquid lime injection system, characterized in that calculated by the flow rate of the liquid calcined lime that is moved to the shear pH of the landing well and the air-jet mixing device (500).
The method of claim 1,
It further comprises a magnetized water production apparatus 300 for generating a magnetized water using the backwash water, supplying to the liquid liquefied lime input device 400 and the air-jet mixed admixture 500 to reduce the solidification of the liquid hydrated lime Liquid lime injection system characterized in that.
The method of claim 2,
The liquid lime stirring tank (100, 100a),
A stirring bath main body 110 each provided with a liquid lime inlet pipe 111 and a liquid lime lime discharge pipe 114 for discharging the liquid lime lime A 'adjusted to a reference concentration to the liquid lime lime injecting device 400;
A stirring device (120) provided in the vertical direction in the stirring tank body (110) to stir so that the liquid lime (A ') does not precipitate therein;
Injecting the pure water supplied from the pure water manufacturing apparatus 200 into the stirring tank body 110, the storage tank washing machine 130 for washing the inside of the stirring tank body 110,
When the stirring device 120 is driven on the inner wall surface of the stirring tank body 110, a fluid barrier plate 117 for floating the liquid liquid lime (A ') therein is formed to protrude radially inward, Liquid liquefied lime injection system, characterized in that the plurality of mixing holes (117a) are formed through the plate surface of the fluid barrier plate 117 in the height direction.
The method of claim 3,
The stirring device 120,
A drive shaft 129 provided perpendicular to the center region of the stirring tank body 110;
An upper stirrer 121 coupled to an upper region of the drive shaft 129 and stirring the liquid lime in a downward direction when the drive shaft 129 is rotated;
An intermediate stirrer 123 coupled to an intermediate region of the drive shaft 129 and for stirring the liquid calcined lime downward when the drive shaft 129 is rotated;
A lower stirrer 125 coupled to a lower region of the drive shaft 129 and for stirring the liquid slaked upwards when the drive shaft 129 rotates;
Coupled to the drive shaft 129 on the outside of the stirring tank body 110, the liquid lime injection system, characterized in that it comprises a stirring shaft drive unit (127) for rotating the drive shaft (129).
The method of claim 4, wherein
The liquid lime stirring tank (100, 100a) is provided in plurality
When the remaining amount of liquid lime in the interior is less than the set height, the remaining liquid lime is transferred to the neighboring liquid lime stirring tank (100, 100a), and the storage tank washing machine 130 is driven to periodically clean the interior Liquid lime injection system.
The method of claim 3,
It is further provided with a concentration meter 119 which is provided in the lower portion of the stirring tank body 110 to measure the concentration of the liquid lime in the interior,
The concentration meter 119 is a liquid lime injection system, characterized in that for converting the sound speed required when receiving the sound wave emitted from one surface using the sound wave measurement sensor (119a) to the concentration.

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