KR102513793B1 - Polymer Coagulant Dissolution Supply Device - Google Patents

Abstract

The present invention relates to an apparatus for dissolving and supplying a polymer coagulant, and more particularly, to a coagulant agitation tank equipped with an impeller therein to agitate the polymer coagulant and a solvent, a coagulant storage tank for storing the agitated coagulant, and between the coagulant agitation tank and the coagulant storage tank. Including a drain pipe connecting the coagulant stirring tank and the coagulant storage tank, a coagulant supply pump for pressurizing the coagulant from the coagulant storage tank, and a control unit for controlling agitation, storage, and feeding of the coagulant, wherein the drain pipe is periodically opened and closed to stir the coagulant The coagulant stirred with the solvent in the tank is periodically drained to the coagulant storage tank, and the coagulant supply pump automatically supplies a certain amount of coagulant in the continuous water treatment process. It relates to a polymer coagulant dissolution supply device that continuously supplies a polymer coagulant suitable for the concentration to be diluted to solve the problem that water treatment is not smooth when there is a shortage of water.

Description

Polymer Coagulant Dissolution Supply Device}

The present invention relates to an apparatus for dissolving and supplying a polymer coagulant, and more particularly, to a coagulant agitation tank equipped with an impeller therein to agitate the polymer coagulant and a solvent, a coagulant storage tank for storing the agitated coagulant, and between the coagulant agitation tank and the coagulant storage tank. Including a drain pipe connecting the coagulant stirring tank and the coagulant storage tank, a coagulant supply pump for pressurizing the coagulant from the coagulant storage tank, and a control unit for controlling agitation, storage, and feeding of the coagulant, wherein the drain pipe is periodically opened and closed to stir the coagulant The coagulant stirred with the solvent in the tank is periodically drained to the coagulant storage tank, and the coagulant supply pump automatically supplies a certain amount of coagulant in the continuous water treatment process. It relates to a polymer coagulant dissolution supply device that continuously supplies a polymer coagulant suitable for the concentration to be diluted to solve the problem that water treatment is not smooth when there is a shortage of water.

Water treatment chemicals refer to chemicals manufactured by the reaction of natural and chemical substances used in the water treatment process. Since there are various types of pollutants in water, in the actual water treatment process, coagulants and flocculants, corrosion inhibitors, Scale inhibitors, acids and alkalis as pH regulators, and antifoaming agents for foam management are used. Among them, a coagulant and a flocculant are substances added to a fluid to easily filter out contaminants in a fluid by coagulating and precipitating or floating contaminants in a fluid requiring water treatment.

In Korea, coagulants and flocculants are generally applied without distinction, but in foreign countries, inorganic coagulants and petrochemical monomers that react based on metal ions are polymerized. It is divided into an organic coagulant and a polymeric flocculant, which use a mechanism using charge among polymers, and acts as shown in FIG. 1. Coagulation neutralizes the surface of charged solid particles by injecting a coagulant into colloidal contaminants that perform Brownian motion in a fluid, and through this, non-settlable particles in suspension ) to allow them to stick together. Flocculation is a process of accelerating sedimentation by injecting flocculant to form large aggregates by aggregating coagulated particles. In general water treatment, inorganic or organic flocculants are first applied Again, a high-molecular coagulant is used in parallel to coarsen the floc and is treated by precipitation or flotation, or contaminants in the fluid are treated only with inorganic or organic coagulants.

In particular, the polymer coagulant is a high molecular weight water-soluble polymer that neutralizes the surface charge of colloids and fine particles suspended in water to coagulate the particles. do. Compared to inorganic coagulants, polymeric coagulants can accelerate filtration and dehydration by rapidly aggregating suspended matter even in a small amount.

A water treatment system for purifying a washing liquid containing contaminants may be shown as shown in FIG. 2, and a plurality of supply devices ( After being supplied in 93), it is reacted in a plurality of reactors 94. Thereafter, the fluid after the reaction in the reaction tank 94 is precipitated in the precipitation tank 95 to purify the contaminants in the washing liquid.

Most modern ships are equipped with engines and boilers for their own power and heating. In order to drive the engine and the boiler, fuel must be burned, and the exhaust gas generated in the combustion process contains harmful substances such as sulfur oxides (SOx), nitrogen oxides (NOx), and PM (Particular Matter, particulate matter). In the ship, a scrubber is operated to purify the generated exhaust gas. However, in the case of a ship, it is impossible to install a separate reaction tank and auxiliary facilities due to space limitations, and in the case of water treatment without a reaction tank, there is a problem in that pollutants are not properly purified.

In addition, in the case of the polymer coagulant used for coagulation and precipitation, the amount of coagulant appropriate for the concentration to be diluted must be manually supplied to the settling tank or reaction tank, and water treatment is limited to the amount of coagulant prepared. There is a problem that doesn't work.

The present invention has been made to solve the above problems,

An object of the present invention is to have an impeller therein to stir the polymer coagulant and the solvent, a coagulant agitation tank for agitating the polymer coagulant, a coagulant storage tank for storing the agitated coagulant, a coagulant supply pump for pressurizing the coagulant from the coagulant storage tank, and agitation and storage of the coagulant, It includes a control unit for controlling the feeding of the coagulant, and the coagulant supply pump automatically supplies a certain amount of coagulant, so that contaminants are precipitated by limiting the amount of the coagulant supplied in the continuously performed water treatment process. It is to provide a polymer coagulant dissolution supply device that continuously supplies a polymer coagulant suitable for the concentration to be diluted to solve the problem that has not been solved.

An object of the present invention is to further include a drain pipe connecting the coagulant stirring tank and the coagulant storage tank between the coagulant stirring tank and the coagulant storage tank, and the drain pipe is periodically opened and closed so that the solvent and the coagulant stirred in the coagulant stirring tank are periodically It is to provide a polymer coagulant dissolving and supplying device in which the coagulant drained into the coagulant storage tank and periodically dissolved in the coagulant storage tank is filled.

An object of the present invention is to further include a first sensor for measuring the amount of the coagulant stored in the coagulant storage tank, and the control unit controls the coagulant stirring tank and the drain pipe based on the amount of the coagulant measured by the first sensor to control the operator To provide a polymer coagulant dissolution supply device capable of automatically supplying the coagulant to a water treatment system without manually supplying the coagulant.

An object of the present invention, when the amount of the coagulant in the coagulant storage tank measured by the first sensor is equal to or less than a predetermined first amount, the coagulant agitation tank receives a solvent and a coagulant and controls the impeller in the coagulant agitation tank to rotate, and 1 When the amount of coagulant in the coagulant storage tank measured by the sensor is less than the predetermined second amount, the drain pipe is opened and the coagulant in the coagulant stirring tank is supplied to the coagulant storage tank to reduce the amount of coagulant. Preparing for filling by stirring and dissolving the polymer coagulant It is to provide a polymer coagulant dissolving and supplying device.

An object of the present invention is to provide an apparatus for dissolving and supplying a polymer coagulant in which the impeller rapidly agitates the solvent and the coagulant at a speed of 300 rpm or more to improve the coagulant performance of the coagulant.

An object of the present invention is to further include a second sensor for measuring the state of the coagulant, and the control unit determines the dissolution state of the coagulant prepared based on the value measured by the second sensor, and the measured value is within the set range To provide a polymer coagulant dissolving and supplying device for discharging or re-stirring the coagulant that is not normally dissolved by draining the coagulant to the outside when the coagulant is out of the range.

An object of the present invention is to provide a device for dissolving and supplying a polymer coagulant that determines whether the coagulant is normal through measuring the viscosity corresponding to the concentration of the coagulant by allowing the second sensor to measure the viscosity of the coagulant.

An object of the present invention is to provide a device for dissolving and supplying a polymer coagulant capable of stably measuring the viscosity by measuring the viscosity of the coagulant stored in the second sensor provided in the coagulant storage tank.

An object of the present invention is that the second sensor is provided in the coagulant stirring tank, measures the viscosity of the coagulant stirred in a state in which the rotation of the impeller is stopped by the control unit, and the drain pipe is branched out from the coagulant stirring tank. To provide an apparatus for dissolving and supplying a polymeric coagulant capable of quickly determining the normal state of the dissolved coagulant by draining the agitated coagulant to the outside or guiding it to the coagulant storage tank according to the measured viscosity of the coagulant.

An object of the present invention is that the coagulant supply pump is provided as a coagulant dosing pump, and the amount of coagulant injected from the coagulant dosing pump is controlled according to the pH concentration in the sedimentation tank, so that the coagulant according to the flocculation state in the sedimentation tank or the amount of contaminants in the washing solution It is to provide a polymer coagulant dissolving and supplying device that controls the amount of supply.

The present invention is implemented by an embodiment having the following configuration in order to achieve the above object.

According to one embodiment of the present invention, the present invention, a coagulant stirring tank having an impeller therein to stir the polymer coagulant and the solvent, a coagulant storage tank for storing the agitated coagulant, and a coagulant supply pump for pumping the coagulant from the coagulant storage tank and a control unit for controlling stirring, storage, and feeding of the coagulant, and the coagulant supply pump automatically supplies a certain amount of the coagulant.

According to one embodiment of the present invention, the present invention further comprises a drain pipe connecting the coagulant stirring tank and the coagulant storage tank between the coagulant stirring tank and the coagulant storage tank, and the drain pipe is periodically opened and closed so that the solvent in the coagulant stirring tank It is characterized in that the agitated coagulant is periodically drained into the coagulant reservoir.

According to one embodiment of the present invention, the present invention further comprises a first sensor for measuring the amount of coagulant stored in the coagulant storage tank, and the control unit stirs the coagulant based on the amount of coagulant measured by the first sensor It is characterized in that it controls the tank and the drain pipe.

According to an embodiment of the present invention, when the amount of the coagulant in the coagulant storage tank measured by the first sensor is equal to or less than the predetermined first amount, the coagulant stirring tank is supplied with a solvent and a coagulant, and the impeller in the coagulant stirring tank is characterized by rotation.

According to one embodiment of the present invention, the impeller is characterized in that the solvent and the coagulant are rapidly stirred at a speed of 300 rpm or more.

According to an embodiment of the present invention, when the amount of coagulant in the coagulant storage tank measured by the first sensor is equal to or less than the predetermined second amount, the drain pipe is opened to supply the coagulant in the coagulant stirring tank to the coagulant storage tank. characterized by

According to one embodiment of the present invention, the present invention further includes a second sensor for measuring the state of the coagulant, and the control unit determines the dissolution state of the coagulant produced based on the value measured by the second sensor, , It is characterized by draining the prepared coagulant to the outside when the measured value is out of the set range.

According to one embodiment of the present invention, the second sensor is characterized in that it measures the viscosity of the coagulant.

According to one embodiment of the present invention, the second sensor is provided in the coagulant storage tank to measure the viscosity of the coagulant stored therein.

According to one embodiment of the present invention, the second sensor is provided in the coagulant stirring tank and measures the viscosity of the agitated coagulant in a state in which the rotation of the impeller is stopped by the control unit.

According to one embodiment of the present invention, the drain pipe is branched to the outside from the coagulant stirring tank, and selectively drains the agitated coagulant to the outside or guides the coagulant storage tank according to the measured viscosity of the coagulant. to be

According to one embodiment of the present invention, the coagulant supply pump is provided as a coagulant dosing pump, and the amount of coagulant injected from the coagulant dosing pump is controlled according to the pH concentration in the precipitation tank.

The present invention can obtain the following effects by combining and using the above embodiments and configurations to be described below.

The present invention provides a coagulant stirring tank having an impeller therein to stir the polymer coagulant and the solvent, a coagulant storage tank for storing the agitated coagulant, a coagulant supply pump for pressurizing the coagulant from the coagulant storage tank, and agitation, storage, and feeding of the coagulant. In the water treatment process that is continuously performed by automatically supplying a certain amount of coagulant, the coagulant supply pump automatically supplies a certain amount of coagulant, and contaminants are precipitated by limiting the amount of coagulant supplied. To solve the problem, there is an effect of providing a polymer coagulant dissolution supply device that continuously supplies a polymer coagulant suitable for the concentration to be diluted.

The present invention further includes a drain pipe connecting the coagulant stirring tank and the coagulant storage tank between the coagulant stirring tank and the coagulant storage tank, and the drain pipe is periodically opened and closed so that the solvent and the coagulant stirred in the coagulant stirring tank periodically It is drained to give the effect of periodically filling the coagulant storage tank with dissolved coagulant.

The present invention further includes a first sensor for measuring the amount of coagulant stored in the coagulant storage tank, and the control unit controls the coagulant stirring tank and the drain pipe based on the amount of coagulant measured by the first sensor so that the operator can manually Even if the coagulant is not supplied, it has the effect of automatically supplying the coagulant to the water treatment system.

In the present invention, when the amount of coagulant in the coagulant storage tank measured by the first sensor is equal to or less than a predetermined first amount, the coagulant agitation tank is supplied with a solvent and coagulant, and the impeller in the coagulant agitation tank is controlled to rotate, and the first sensor When the amount of coagulant in the coagulant storage tank measured in is less than the predetermined second amount, the drain pipe is opened and the coagulant in the coagulant stirring tank is supplied to the coagulant storage tank to reduce the amount of coagulant. The polymer coagulant can be stirred and dissolved to prepare for filling. .

In the present invention, the impeller rapidly agitates the solvent and the coagulant at a speed of 300 rpm or more to derive an effect of improving the coagulant performance of the coagulant.

The present invention further includes a second sensor for measuring the state of the coagulant, and the control unit determines the dissolution state of the coagulant prepared based on the value measured by the second sensor, and the measured value is outside the set range In this case, the produced coagulant is drained to the outside to provide an effect of discharging or re-stirring the coagulant that is not normally dissolved.

In the present invention, the second sensor measures the viscosity of the coagulant, and it is possible to determine whether the coagulant is normal through the measurement of the viscosity corresponding to the concentration of the coagulant.

In the present invention, the second sensor is provided in the coagulant storage tank to measure the viscosity of the coagulant stored so that stable viscosity measurement is possible.

In the present invention, the second sensor is provided in the coagulant stirring tank, measures the viscosity of the agitated coagulant in a state in which the rotation of the impeller is stopped by the control unit, and the drain pipe is branched out from the coagulant stirring tank and measures the viscosity. Depending on the viscosity of the coagulant, the agitated coagulant is selectively drained to the outside or guided to the coagulant storage tank, so that the normal state of the dissolved coagulant can be quickly determined.

In the present invention, the coagulant supply pump is provided as a coagulant dosing pump, and the amount of coagulant input from the coagulant dosing pump is controlled according to the pH concentration in the settling tank, so that the supply amount of the coagulant according to the flocculation state in the settling tank or the amount of contaminants in the washing liquid has the effect of controlling

1 is a view explaining coagulation and coagulation by a coagulant and a flocculant;
Figure 2 is a view showing a conventional water treatment system for washing liquid containing contaminants
Figure 3 is a schematic diagram of a water treatment system for automatic drug input according to an embodiment of the present invention
4 is a cross-sectional view of a line mixer 41 according to an embodiment of the present invention
5 is a view showing a transfer pump 43 according to an embodiment of the present invention
Figure 6 is a schematic diagram of another automatic drug input water treatment system of the present invention
7 is a view of a polymer coagulant dissolving and supplying device 50 according to an embodiment of the present invention
8 is a view of a polymer coagulant dissolving and supplying device 50 according to another embodiment of the present invention

Hereinafter, preferred embodiments of the device for dissolving and supplying a polymer coagulant according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Unless there is a special definition, all terms in this specification are the same as the general meaning of the term understood by a person skilled in the art to which the present invention belongs, and if it conflicts with the meaning of the terms used in this specification, Follow the definitions used in the specification.

Throughout the specification, when a part is said to "include" a certain element, this means that it does not exclude other elements unless otherwise stated, and may further include other elements, and the specification Terms such as “~unit” described herein mean a unit that processes at least one function or operation. In addition, when it is said that certain components are "connected", this is not limited to being in direct contact with each other and fastening, but includes fastening through other components, and even if they are not fastened, a predetermined force or energy can be transmitted. It can mean that it is arranged so that Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings.

3 is a schematic diagram of a water treatment system 1 for automatic drug input according to an embodiment of the present invention. The automatic chemical input water treatment system (1) feeds the cleaning solution containing contaminants to a sedimentation tank capable of slow agitation while injecting coagulant and coagulant into the pipe, rapidly agitating it in the pipe line to form fine flocs, and then combining with the contaminants in the sedimentation tank. It is characterized in that space is saved because contaminants can be filtered out without the need for a separate reaction tank or auxiliary equipment. The automatic chemical input water treatment system (1) includes an exhaust gas purification unit (10), a pipe unit (20), a coagulant supply unit (30), a transfer mixing unit (40), a polymer coagulant dissolution supply unit (50), and a settling tank (60). ).

The purification unit 10 is a part that purifies the polluted exhaust gas, and preferably includes a scrubber 11 and a buffer tank 13 to purify the exhaust gas generated in the ship.

One side of the scrubber 11 is connected to a large diesel engine such as a main engine or an auxiliary engine of a ship to introduce exhaust gas containing pollutants such as sulfur oxides. In order to remove pollutants such as sulfur oxides contained in the introduced exhaust gas, they are removed through adsorption with the cleaning liquid supplied to the scrubber 11. The cleaning liquid may be included at the beginning of the process of cleaning the exhaust gas or may be added during system operation. During the operation of the present invention, the cleaning liquid supplied to the scrubber 11 is atomized and sprayed in the scrubber, and pollutant particles such as sulfur oxides contained in the exhaust gas are attached to the atomized cleaning liquid and separated from the exhaust gas, and the pollutant particles are separated from the exhaust gas. Adhered contaminated washing liquid is purified through the automatic drug input water treatment system 1 according to the present invention. The purified washing liquid is supplied to the scrubber 11 again through a second pipe to be described later and circulated. The clarified cleaning fluid has a reduced amount of contaminants, but may still contain small amounts of contaminants.

The buffer tank 13 is connected to the scrubber 11 through a scrubber connection pipe to temporarily store the contaminated washing liquid generated from the scrubber 11, and returns the temporarily stored washing liquid to the scrubber 11. supply In addition, the washing liquid purified through the automatic drug input water treatment system is received and stored through the second pipe.

In the present invention, the buffer tank 13 has an effect of increasing the stability of the system for circulating the cleaning liquid. For example, when the automatic drug input water treatment system breaks down or needs to be inspected while the present invention is operating, the scrubber 11 does not immediately stop the entire system, but even if the scrubber 11 is operated, the scrubber 11 ) -> buffer tank 13 -> second pipe 23 -> by circulating the closed loop consisting of the scrubber 11, the operation of the scrubber 11 can be maintained for a certain period of time. Even if the washing liquid is circulated without purification, the scrubber 11 can be operated temporarily because the contamination level of the washing liquid does not significantly deteriorate due to the buffer tank 13 that temporarily stores the washing liquid.

When a part of the contaminated washing liquid temporarily stored in the buffer tank 13 is taken out and purified, and the purified washing liquid is re-supplyed to the scrubber 11 via the buffer tank 13, the amount of washing liquid to be purified in the system and the contamination level of the cleaning solution stored in the buffer tank 13 is maintained low by introducing the purified cleaning solution back into the buffer tank 13. Therefore, in the course of the cleaning solution circulating through the system, fouling or Problems such as clogging of pipes constituting the system due to deposition of contaminants due to scaling or formation of large contaminant clusters in the scrubber 11 can be prevented.

The pipe part 20 connects each component of the automatic drug input water treatment system 1 according to the present invention and is provided so that the cleaning liquid can flow and be fed by allowing them to communicate with each other. Preferably, the buffer tank 13 is connected to the settling tank 60 to be described later, so that the washing liquid containing contaminants in the buffer tank 13 is sent to the settling tank 60 and then purified through precipitation with a coagulant or coagulant. It is provided so that the washing liquid purified from the settling tank 60 can be sent to the buffer tank 13 or the scrubber 11 again. The pipe part 20 may include a first pipe 21 and a second pipe 23 .

The first pipe 21 transfers the cleaning solution from the buffer tank 13 to the settling tank 60, and during the transfer of the cleaning solution, a coagulant and a coagulant are supplied to form micro-flocs in the first pipe 21. there is. The coagulant introduced into the first pipe is mixed with the washing liquid while flowing through the first pipe, and the coagulant is automatically injected in a fixed amount and mixed in the settling tank. Contaminants precipitate after floc formation through

The second pipe 23 transfers the purified washing liquid from the settling tank to the scrubber or buffer tank. The second pipe 23 is connected to the upper part of the settling tank 60 so that a relatively clean part of the purified washing liquid can be fed. The second pipe 23 may be divided into a washing liquid recovery pipe 231 and a washing liquid resupply pipe 233.

The washing liquid collection pipe 231 extracts the purified washing liquid from the settling tank 60 and transfers it to the scrubber 11 or the buffer tank 13. To this end, the washing liquid collection pipe 231 has one end connected to the settling tank 60 and connected to the upper part of the settling tank 60 to receive a part of the more purified washing liquid among the purified washing liquid, and the other end to be connected to the buffer tank 13. there is. Preferably, a valve is provided to selectively control the recovery direction of the washing liquid, and in another embodiment of the present invention, a portion toward the scrubber 11 and a portion toward the buffer tank 13 may be branched.

The washing liquid resupply pipe 233 has one end connected to the buffer tank 13 and the other end connected to the scrubber 11 to circulate the washing liquid. As described above, if the water treatment system needs to be inspected, the circulation of the cleaning solution is performed in a closed loop consisting of the scrubber 11 -> the buffer tank 13 -> the cleaning solution resupply pipe 233 -> the scrubber 11. By doing so, The operation of the scrubber 11 can be maintained for a certain period of time.

The coagulant supply unit 30 is provided to inject the coagulant into the cleaning liquid flowing through the first pipe 21 . As described above, the coagulant may form micro-flocs in the pipe through rapid agitation with contaminants such as colloids in the cleaning liquid. In the present invention, a separate reaction tank or tank for rapid agitation of the coagulant is not provided, and after the coagulant is introduced, rapid agitation is performed during the flow of the washing liquid in the first pipe 21, so that the floc can be efficiently prepared even in a ship with limited space. Formation enables the purification of contaminants. Since the coagulant improves the efficiency of the coagulant used for solid removal in the wastewater purification process, it is necessary that the coagulant be added before the coagulant. Therefore, the coagulant supply unit 30 may be connected to the first pipe 21 prior to the polymer coagulant dissolving and supplying device 50 to be described later. The coagulant supply unit 30 includes a coagulant storage tank 31, a coagulant supply pump 33, and a first pH sensor 35.

The coagulant storage tank 31 is configured to store a coagulant for generating micro-flocs. The coagulant in the coagulant storage tank 31 is introduced into the first pipe 21 through the coagulant supply pump 33 .

The coagulant supply pump 33 is provided to inject the coagulant in the coagulant storage tank 31 into the first pipe. In a preferred embodiment of the present invention, the coagulant supply pump 33 is provided as a coagulant dosing pump capable of injecting a certain amount of coagulant into the first pipe 21 . The dosing pump plays a role in transporting by adjusting the amount, and in particular serves to deliver a dose liquid in a uniform amount. The dosing pump may consist of a chamber with an inlet valve at the inlet into the chamber and a chamber with an outlet valve at the outlet of the chamber. While the volume of the chamber is expanding, the dose liquid is sucked into the chamber through the inlet valve, and the volume of the chamber decreases in relation to the membrane movement in the opposite direction, so the dose liquid leaves the chamber through the outlet valve. Go through the conduit to the desired location. The coagulant dosing pump 33 takes the coagulant as a dose liquid and injects the coagulant in the coagulant storage tank 31 by a predetermined input amount, and the quantitative method is not limited to the above-described method. The coagulant dosing pump 33 may be connected to a pipe branched from a pipe connected from the buffer tank to the settling tank to mix the coagulant in the washing liquid flowing through the pipe, but may be directly connected to a line mixer 41 to be described later to supply the coagulant. there is.

The first pH sensor 35 is provided to measure the pH concentration in the first pipe 21 after the coagulant supplied to the first pipe 21 is stirred. The formation of flocs is affected by the state of agitation expressed as a speed gradient, pH concentration, etc. The coagulant is weakly acidic and there is an appropriate pH concentration for forming micro-flocs by the coagulant. In one embodiment of the present invention, the washing liquid containing contaminants and flowing in the first pipe 21 has a pH concentration of about 7.1, and a pH concentration of about 6.8 may be a target for the formation of micro-flocs. The first pH sensor 35 measures the pH concentrations of the agitated washing liquid and the coagulant after passing through the conveying and mixing unit 40 to be described later, compares the pH concentration of 6.8, which is an appropriate pH concentration, and feeds back to the coagulant dosing pump 33. The amount of coagulant supplied can be adjusted. Furthermore, since the amount of contaminants included in the cleaning liquid may change according to the operation of the engine and the scrubber, a corresponding amount of condensate may be supplied.

The transport mixing unit 40 is provided to mix the coagulant introduced into the first pipe 21 and the cleaning liquid flowing in the first pipe. The transport mixing unit 40 is not provided as a separate reaction tank or mixing container that is branched off from the first pipe 21 and is provided in the first pipe 21 to transfer the washing fluid and the coagulant through the first pipe 21. It can facilitate the transfer of the cleaning solution while allowing the s to be mixed. The transfer mixing unit 40 may include a line mixer 41 and a transfer pump 43 .

Referring to FIG. 4 , the line mixer 41 is a tubular mixer having a flow path formed therein and extending with openings on both sides. A plurality of stirring elements 411 are formed on the flow path of the line mixer to change the moving direction of the fluid moving along the flow path in various directions. The stirring element 31 is formed in various shapes and sizes to generate turbulence in the moving fluid to uniformly mix different types of materials. In order to prevent the agitation element from being removed from the internal flow path of the line mixer 41, a cap having a smaller diameter than the width of one side of the agitation element is fitted to the end of the line mixer where it is connected to the pipe so that the agitation element is caught on the cap. Alternatively, when the diameter of the stirring element is compared with the diameter of the line mixer flow path, the stirring element may be fixed to the inner flow path of the line mixer in various ways, such as forming the same or larger to be fitted. The line mixer 41 is provided on the sedimentation tank side from the portion where the first pipe is branched and connected to the coagulant supply unit, and mixes the coagulant and the washing liquid. The mixed liquid of the contaminated washing liquid and condensing agent that is strongly pumped from the buffer tank by the pump and proceeds is rapidly stirred in the line mixer 41.

The agitating element 411 is provided in a stationary state in the line mixer, and is preferably formed in a spiral shape so that the contaminated washing water flowing to one side and the coagulant can be mixed. The stirring element may have various shapes depending on the type of fluid. The line mixer 41 is provided on the first pipe 21 to mix the coagulant and the washing liquid without a separate reaction tank to smoothly form microflocs and increase water treatment efficiency in a ship with space limitations, By the line mixer 41, the coagulant may be more mixed with the washing liquid than by stirring in the reaction vessel. As shown in FIG. 4, the agitating element 411 of the line mixer 41 occupies the cross section of the line mixer flow path, thereby generating turbulent flow for the washing liquid flowing in all cross sections of the line mixer 41 and mixing it with the coagulant. can be achieved efficiently. In order to maintain a turbulent state, an agitation element suitable for the pumping speed of the washing liquid may be arranged to have a speed gradient of 400 to 1,500/sec.

The purpose of rapid agitation is to cause a lot of collision between the coagulant and the particles in the sewage and to achieve uniform dispersion, and the rapid agitator is mainly of a turbine type and a propeller type. Rapid stirring performed in a separately provided reaction vessel is typically rapid stirring through an impeller, and inevitably all liquids in the reaction vessel can be uniformly mixed. On the other hand, the stirring element 411 of the present invention occupies the cross section of the flow path on the flow path of the line mixer 41, thereby generating turbulent flow over all areas of the flowing washing liquid and enabling uniform mixing with the coagulant.

Referring to FIG. 5, the transfer pump 43 is provided to additionally pressurize the cleaning solution, and is preferably provided between the line mixer and the settling tank, that is, at the rear end of the line mixer based on the moving direction of the cleaning solution. The cleaning liquid that has passed through can be additionally mixed and pumped. The transfer pump 43 has a casing 431 provided to temporarily receive and discharge the cleaning fluid therein and an impeller 433 rotated by a motor inside the casing 431 to promote mixing of the cleaning fluid and condensate during pressure transfer. It can be.

Referring back to FIG. 3 , in a preferred embodiment of the present invention, the first pH sensor 35 may be provided at the rear end of the transfer/mixing unit 40 . That is, the first pH sensor is provided between the transfer pump 43 and the settling tank 60, preferably through the first pipe before the coagulant is supplied between the polymer coagulant dissolution supply device 50 and the transfer pump 43. The pH concentration in (21) can be measured. Therefore, it is possible to determine whether the formation of micro-flocs is effective from the pH concentration of the mixed liquid of the washing liquid and the flocculant before supplying the coagulant, and accordingly, the amount of the coagulant supplied can be adjusted.

In another embodiment of the present invention shown in FIG. 6, the first pH sensor 35 may be provided between the line mixer 41 and the transfer pump 43. In the present invention, since rapid stirring is mainly performed in the line mixer 41, after passing through the line mixer 41, it is possible to check whether or not microflocs are formed through the pH concentration of the mixture of the washing liquid and the coagulant and adjust the amount of the coagulant supplied.

Referring to FIGS. 2, 6 and 7, the polymer coagulant dissolving and supplying device 50 is provided to inject the coagulant into the first pipe 21. Flocculants neutralize and crosslink the colloids so that agglomeration can occur more effectively. As the agglomeration reaction proceeds, the floc approaches the crystal structure and becomes denser. Coagulants supplied for water treatment are formed of high molecular compounds, and their stability is determined by the presence of sulfate ions that hinder immediate polymerization. The polymer coagulant is effective for sewage that is difficult to treat with only aluminum sulfate (Alum), and the added coagulant does not precipitate, and the pH does not change during the coagulation process. In addition, the amount of sludge generated is reduced and dehydration is improved. Since the polymer coagulant functions as a condensation nucleus of contaminants, continuous supply is required in the continuously performed water treatment process, and if the coagulant is insufficient, coagulation may not occur as much as necessary. In the polymer coagulant dissolution supply device 50, contaminants are precipitated by limiting the amount of coagulant supplied in the continuously performed water treatment process, so that water treatment is not smooth when the coagulant is insufficient. The polymer coagulant can be supplied continuously. The polymer coagulant dissolution supply device 50 includes a coagulant stirring tank 51, a drain pipe 52, a coagulant storage tank 53, a coagulant sensing unit 54, a coagulant supply pump 55, a control unit 56, and a second A pH sensor 57 may be included.

Referring to FIGS. 7 and 8, the coagulant stirring tank 51 may receive a polymer coagulant and a solvent, and mix the polymer coagulant and the solvent by stirring. The coagulant stirring tank 51 stirs the coagulant and the solvent at high speed, so that the injection of chemicals for water treatment and rapid stirring can be performed simultaneously. The coagulant stirring tank 51 includes a coagulant inlet 511, a solvent inlet 513 and an impeller 515.

The coagulant inlet 511 is connected to the outside at one side of the coagulant stirring tank 51 to receive a coagulant, preferably a polymer coagulant. The solvent inlet 513 is connected to the outside from one side or the other side of the coagulant stirring tank 51 to receive a solvent, and the solvent supplied may preferably be fresh water (clean water). The impeller 515 is rotationally driven by a motor inside the coagulant stirring tank 51 and has stirring blades so that the coagulant and the solvent can be mixed with each other. The impeller 515 may preferably be rotationally driven at a speed of 300 rpm or more. After the coagulant and the solvent are introduced through the coagulant inlet 511 and the solvent inlet 513, stirring proceeds through the impeller 515. In a preferred embodiment of the present invention, the impeller 515 may be operated after the injection of the coagulant and the solvent has completely stopped.

The drain pipe 52 is provided to connect the coagulant stirring tank and the coagulant storage tank between the coagulant stirring tank 51 and the coagulant storage tank 53 to be described later. Preferably, it is connected to the lower side of the coagulant stirring tank 51 so that the coagulant naturally flows into the coagulant storage tank 53 by gravity when the drain pipe 52 is opened. The drain pipe 52 may be periodically opened and closed so that the solvent and the coagulant stirred in the coagulant stirring tank 51 are periodically drained into the coagulant storage tank. Referring to FIG. 8 , the drain pipe 52 may branch to the outside, and the coagulant in the coagulant stirring tank 51 may be guided into the coagulant storage tank 53 or drained to the outside under the control of the controller 56. . The control by the controller 56 will be described later.

The coagulant storage tank 53 is provided to store the agitated coagulant. The coagulant prepared through agitation may be stored in the coagulant storage tank 53 and then supplied into the first pipe 21 by a coagulant supply pump 55 to be described later. In a preferred embodiment of the present invention, the flocculant storage tank 53 may drain the coagulant stored through a connection pipe 531 connected to communicate with the outside. If the coagulant is not normally produced by the control unit 56 described later, even if the coagulant is supplied, the water treatment efficiency is lowered, so it can be drained to the outside through the connection pipe 531 or re-stirred.

The coagulant sensing unit 54 is provided to measure the state of the coagulant produced. The coagulant prepared by rapid stirring should have an appropriate coagulant concentration (about 0.4%), but if the coagulant is abnormally dissolved, coagulation in the settling tank 60 does not occur properly. Therefore, the coagulant sensing unit 54 measures the state of the coagulant produced, and the control unit 56, which will be described later, determines the normal state of the coagulant based on the value measured by the coagulant sensing unit 54, and determines the coagulant determined to be abnormal. can be drained or re-stirred, and the coagulant determined to be normal can be supplied to the first pipe 21 to the precipitation tank 60. In addition, in order to automatically supply the coagulant, it is possible to manufacture the coagulant according to the amount of the remaining coagulant. The coagulant sensing unit 54 includes a first sensor 541 and a second sensor 543 .

The first sensor 541 is provided to measure the amount of coagulant stored in the coagulant storage tank 53 . The first sensor 541 may be provided in the coagulant storage tank 53. Preferably, the amount of coagulant stored in the coagulant storage tank 53 can be measured by measuring the water level with a level sensor. The amount of the coagulant measured based on the water level by the first sensor 541 is transmitted to the control unit 56, and the control unit 56, which will be described later, can control the agitation of the coagulant in the coagulant stirring tank 51.

A first amount and a second amount may be set as threshold values measured by the first sensor 541 . The first amount and the second amount indicate the amount of the coagulant stored in the coagulant storage tank 53 as predetermined values and may be controlled by the control unit. The first amount may be set to a value greater than the second amount. As will be described later, the first amount may be a value indicating agitation of the coagulant in the coagulant stirring tank 51, and the second amount may be a value indicating that the coagulant produced from the coagulant stirring tank 51 to the coagulant storage tank 53 is drained. can

The second sensor 543 may be provided to measure the state of the coagulant produced. The second sensor 543 may measure the viscosity of the coagulant. A viscosity value suitable for an appropriate coagulant concentration (about 0.4%) may be set, and the second sensor 543 determines whether the coagulant is normally dissolved by measuring the viscosity of the coagulant. As shown in FIG. 7 , in a preferred embodiment of the present invention, the second sensor 543 is connected to the side of the coagulant storage tank 53 to measure the viscosity of the coagulant stored in the coagulant storage tank 53. Therefore, the viscosity of the coagulant drained after stirring in the coagulant stirring tank 51 is measured. Since the viscosity of a liquid varies depending on temperature, pressure, and shear rate, the viscosity must be measured in a stable state. In the coagulant stirring tank 51, since a reaction in which the coagulant is dissolved in the solvent is periodically performed according to the rotation of the impeller, the viscosity of the coagulant in a relatively stable state in the coagulant storage tank 53 can be measured.

In another embodiment of the present invention shown in FIG. 8 , the second sensor 543 is connected to the coagulant stirring tank 51 to measure the viscosity of the agitated coagulant. After the stirring in the coagulant stirring tank 51 is finished, the viscosity is measured, and in the case of abnormally dissolved coagulant, it is directly drained to the outside through the drain pipe 52 communicating with the outside, so that the inside of the coagulant storage tank 53 It can prevent the residual coagulant from draining together.

The coagulant supply pump 55 is provided to inject the coagulant in the coagulant storage tank 53 into the first pipe. In a preferred embodiment of the present invention, the coagulant supply pump 55 is provided as a coagulant dosing pump capable of injecting a certain amount of coagulant into the first pipe 21. As described above, the dosing pump serves to control and transport the amount and serves to deliver the dose liquid in a uniform amount. The coagulant dosing pump 55 injects the coagulant in the coagulant storage tank 53 by a predetermined input amount with the coagulant dosing liquid, and the quantitative method is not limited to the above-described method. The coagulant dosing pump 55 is connected to a pipe branched from the first pipe 21 connected from the buffer tank to the settling tank to supply the coagulant to the washing liquid flowing through the pipe, but is directly connected to the settling tank 60 to be described later to remove the coagulant can also supply.

The controller 56 is provided to control stirring, storage, and feeding of the coagulant. The controller 56 controls the supply of the solvent and the polymer coagulant in the coagulant stirring tank 51 and the agitation of the impeller 515, controls whether the drain pipe 52 is opened and closed, and drains the coagulant to the outside. According to the measured value of the sensing unit 40, the coagulant may be dissolved by stirring, or the coagulant may be drained to the outside according to the dissolution state of the coagulant.

The controller 56 continuously supplies the coagulant based on the measurement value of the first sensor 541 . Opening/closing states of the coagulant stirring tank 51 and the drain pipe 52 may be controlled based on the predetermined first and second amounts indicating the amount of the coagulant remaining in the coagulant storage tank 53 . Since the coagulant will be continuously reduced by the supply of the coagulant, when the amount of the coagulant in the coagulant storage tank 53 measured by the first sensor is equal to or less than the predetermined first amount, the coagulant is newly mixed and dissolved in the coagulant stirring tank 51. can make it happen At this time, in order to mix and dissolve the coagulant, the coagulant agitation tank 51 may be supplied with a solvent and a coagulant, and the impeller in the coagulant agitation tank may be controlled to rotate.

When the amount of the coagulant is less than the predetermined second amount, the coagulant dissolved in the coagulant stirring tank 51 may be received and stored in the coagulant storage tank 53 . When the coagulant is continuously supplied, since the amount of the coagulant will decrease at a constant rate, it is preferable that the coagulant stirring in the coagulant stirring tank 51 and the opening and closing of the drain pipe 52 are periodically performed.

The controller 56 determines the dissolution state of the coagulant based on the measured value of the second sensor 543. In one embodiment of the present invention, the second sensor 543 is provided in the coagulant storage tank 53 to measure the viscosity of the coagulant. An appropriate range of viscosity values is set, and when the measured viscosity value is outside the range of viscosity values determined as normal dissolution of the coagulant, the coagulant in the coagulant storage tank 53 is drained to the outside through the connecting pipe 531, and the viscosity value If within the range, the coagulant may be supplied through the coagulant dosing pump 55.

As shown in FIG. 8 , in another embodiment of the present invention, the coagulant is provided in the coagulant stirring tank 51, and the viscosity of the agitated coagulant can be measured in a state in which the rotation of the impeller 515 is stopped by the control unit. When an appropriate range of viscosity values is set and the measured viscosity value is outside the range of viscosity values judged to be normal coagulant dissolution, the coagulant in the coagulant stirring tank 51 is drained to the outside through the drain pipe 52 branched to the outside. And, if it is within the range of the viscosity value, the drain pipe 52 may be connected to the coagulant storage tank 53 to supply the coagulant.

The second pH sensor 57 is provided to measure the pH concentration in the precipitation tank 60 after the coagulant is supplied. The second pH sensor 57 measures the pH concentration of the washing solution slowly stirred in the settling tank 60 and compares the pH concentration to the appropriate pH concentration, thereby adjusting the supply amount of the coagulant by feeding back to the coagulant dosing pump 55. Preferably, the control unit 56 may control the supply amount of the coagulant dosing pump 55 after receiving the measured value from the second pH sensor 57.

The settling tank 60 is provided to precipitate contaminants included in the washing liquid pumped from the buffer tank. In the settling tank 60, the contaminants in the washing liquid are precipitated by the coagulant and coagulant, so that the contaminants are sludged and settled to the bottom. The settling tank 60 may include an agitator 61 selectively driven by a motor therein. The stirring device 61 may be provided to slowly stir the fluid in the precipitation tank at a predetermined speed gradient. In order to effectively coagulate, the number of collisions between particles is high, the particle concentration is high, and the more non-uniform the size of the particles, the better the aggregation effect, and the stirring state in the sedimentation tank is expressed as a speed gradient (G).

G = (P/μV) ^1/2

P: Required power (N-m/sec)

V: mixing tank volume (㎥)

μ : viscosity coefficient of water

In general, as the speed gradient increases, the number of collisions between the coagulant and colloidal particles increases, and the opportunity for reaction increases. Slow stirring may be performed for coagulation. In addition, a sludge discharge pipe may be connected to the lower part of the settling tank 60 to discharge the sludge precipitated inside the settling tank.

As can be seen in FIG. 3, an agitator 61 is provided in the settling tank 60 to slowly agitate the cleaning solution containing the micro flocs and contaminants so that the contaminants are aggregated, and when the drive of the agitator 61 is stopped, Contaminants may be precipitated downward in the post-precipitation tank 60. In another embodiment of the present invention shown in FIG. 6, a settling unit 62 is provided separately in the settling tank 60, and the washing liquid slowly stirred through the stirring device 61 flows into the settling unit 62 and becomes contaminated. Substances may precipitate.

The above detailed description is illustrative of the present invention. In addition, the foregoing is intended to illustrate and describe preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications and environments. That is, changes or modifications are possible within the scope of the concept of the invention disclosed in this specification, within the scope equivalent to the written disclosure and / or within the scope of skill or knowledge in the art. The written embodiment describes the best state for implementing the technical idea of the present invention, and various changes required in the specific application field and use of the present invention are also possible. Therefore, the above detailed description of the invention is not intended to limit the invention to the disclosed embodiments. Also, the appended claims should be construed to cover other embodiments as well.

1: automatic drug input water treatment system 10: washing unit
11: scrubber 13: buffer tank
20: piping part 21: first piping
23: 2nd pipe
30: condensation agent supply unit 31: condensation agent storage tank
33: coagulant dosing pump 35: first pH sensor
40: transfer mixing unit 41: line mixer
411: stirring element 43: transfer pump
50: polymer coagulant dissolution supply device 51: coagulant stirring tank
52: drain pipe 53: coagulant reservoir
531: connector 54: coagulant sensing unit
541: first sensor 543: second sensor
55: coagulant dosing pump 56: control unit
57: second pH sensor
60: sedimentation tank 61: stirring device

Claims (13)

A coagulant stirring tank having an impeller therein to stir the polymer coagulant and the solvent;
A coagulant storage tank for storing the agitated coagulant;
A coagulant supply pump for supplying a certain amount of coagulant from the coagulant storage tank;
A drain pipe that connects the coagulant stirring tank and the coagulant storage tank between the coagulant stirring tank and the coagulant storage tank and is periodically opened and closed to transfer the solvent and the coagulant stirred in the coagulant stirring tank to the coagulant storage tank;
A coagulant sensing unit for measuring the state of the coagulant produced;
Including a control unit for controlling the stirring, storage, and feeding of the coagulant,
The coagulant sensing unit includes a first sensor for measuring the amount of the coagulant stored in the coagulant storage tank and a second sensor provided in the coagulant stirring tank and measuring the viscosity of the agitated coagulant in a state in which the rotation of the impeller is stopped by the controller, ,
The drain pipe is branched out from the coagulant stirring tank,
The control unit drains the coagulant to the outside when the viscosity value measured by the second sensor is outside the set range, and guides the coagulant to the coagulant storage tank when the viscosity value is within the set range. Device. delete The apparatus for dissolving and supplying polymer coagulant according to claim 1, wherein the control unit controls the coagulant stirring tank and the drain pipe based on the amount of coagulant measured by the first sensor. The polymer according to claim 3, wherein, when the amount of the coagulant in the coagulant storage tank measured by the first sensor is equal to or less than a predetermined first amount, the coagulant agitation tank is supplied with a solvent and a coagulant and the impeller in the coagulant agitation tank is rotated. Coagulant dissolution supply device. [Claim 5] The device for dissolving and supplying a polymer coagulant according to claim 4, wherein the impeller rapidly agitates the solvent and coagulant at a speed of 300 rpm or more. The method of claim 4, wherein when the amount of coagulant in the coagulant storage tank measured by the first sensor is equal to or less than the predetermined second amount, the drain pipe is opened to supply the coagulant in the coagulant stirring tank to the coagulant storage tank. supply. delete delete delete delete delete The polymer coagulant dissolving and supplying device according to claim 1, wherein the coagulant supply pump is provided as a coagulant dosing pump. The polymer coagulant dissolution supply device of claim 12, a purification unit having a scrubber and a buffer tank for purifying exhaust gas, a flocculation supply unit for injecting a coagulant into the washing liquid transferred from the purification unit, and mixing the washing liquid and the flocculating agent while the washing liquid is transferred. Further comprising a transfer mixing unit for promoting the transfer of the cleaning liquid, and a settling tank for precipitating contaminants contained in the cleaning liquid,
In the sedimentation tank, contaminants are sludged and precipitated by a coagulant and a coagulant,
The automatic drug input water treatment system, characterized in that the amount of coagulant input from the coagulant dosing pump is controlled according to the pH concentration in the precipitation tank.

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