KR101882926B1 - Potarble water purification system - Google Patents

Abstract

The present invention relates to a water treatment apparatus and a water treatment apparatus, which comprises a raw water storage tank for storing raw water, a pretreatment filter connected to the raw water storage tank and having a plurality of microfilters and a plurality of carbon block filters to be pretreated by moving the raw water, A pretreatment filter, and a pretreatment water storage tank, and a first mobile carrier having a lower portion formed on the lower portion thereof and capable of moving; And a second mobile carrier supported by the separator membrane and having a wheel at a lower portion thereof, wherein the separator membrane is connected to the pretreatment water reservoir and the pretreatment water is treated by a separator, A mobile water treatment unit; A CIP (Cleaning in Place) tank connected to the separation membrane cell to supply a cleaning solution for cleaning the separation membrane of the separation membrane cell, a process water storage tank connected to the separation membrane cell for storing the treated water having passed through the separation membrane cell, And a mobile chemical cleaner comprising the process water storage tank, a third mobile carrier supporting the CIP tank and being formed with a wheel at a lower portion thereof.

Description

{POTARBLE WATER PURIFICATION SYSTEM}

TECHNICAL FIELD The present invention relates to water treatment of contaminated water, and more particularly, to a technique of water treatment using a separation membrane.

In order to purify wastewater generated at the site, it is necessary to transfer the wastewater to another area where the purification facility is installed, or to install a purification facility on the site, and then directly treat the wastewater in the site to use it as water, do.

When the wastewater to be treated is transported to a purification facility using the transfer means and then water treatment is performed, a plurality of transportation means for moving the wastewater or the like is required, or one transfer vehicle has to transport the wastewater several times. The time and cost for transportation of such wastewater are considerable.

In addition, in the case of installing a purification facility on one side of the site, substantial costs may be lost, such as securing an area for the installation of the purification facility, and installation and disassembly of such facilities.

On the other hand, in areas where the water supply facilities are insufficient or rainfall is insufficient, or where disaster areas are contaminated, it is necessary to purify the groundwater or river water to use drinking water. In this case, the water purification system must be operated locally within a reasonable time, and water must be able to be supplied in large quantities for a large number of people. Further, in the case of the membrane filter used in such a water purification apparatus, the surface is contaminated with negative, positive, biofilm, etc., and water purification ability is lowered for a long time.

The inventor of the present invention has studied for a long time to solve the accumulation problem related to the above-mentioned water treatment, and after trial and error, has come to complete the present invention.

The present invention provides a mobile water treatment system capable of systematically operating a pretreatment unit for pre-treating contaminated water, a water treatment unit for water treatment, and a cleaning unit for cleaning the water treatment unit, thereby improving water treatment efficiency and management efficiency .

At this time, each of the components is configured to be movable individually so as to provide a water treatment system which is very easy to carry or move, and can be combined or separated freely.

On the other hand, water treatment is performed using a separation membrane in which a carboxyl group is generated, thereby preventing the formation of nutrients of the biofilm on the surface of the membrane by causing an electric repulsive force on the surface of the separation membrane subjected to water treatment.

On the other hand, other unspecified purposes of the present invention will be further considered within the scope of the following detailed description and easily deduced from the effects thereof.

In order to solve the above problems, a first aspect of the present invention is to provide a pretreatment filter having a raw water reservoir for storing raw water, a plurality of microfilters connected to the raw water reservoir for pretreatment of the raw water, and a plurality of carbon block filters A pretreatment water storage tank for storing the pretreatment water passed through the pretreatment filter, and a mobile pretreatment unit for supporting the raw water storage tank, the pretreatment filter, and the pretreatment water storage tank on the upper portion thereof, Government;

And a second mobile carrier supported by the separator membrane and having a wheel at a lower portion thereof, wherein the separator membrane is connected to the pretreatment water reservoir and the pretreatment water is treated by a separator, A mobile water treatment unit; And

A CIP (Cleaning in Place) tank connected to the separation membrane vessel for storing the treated water that has passed through the separation membrane vessel, a CIP (Cleaning in Place) tank connected to the separation membrane vessel for supplying a cleaning solution for cleaning the separation membrane of the separation membrane vessel, And a movable chemical cleaner comprising a water treatment storage tank, a third mobile carrier supporting the CIP tank, and a wheel formed at a lower portion thereof,

And to provide a mobile water treatment system.

In addition, the present invention is characterized in that,

Each of the meters measuring the electrical conductivity of the treated water passing through the separation membrane cell, the inflow flow rate, the outflow flow rate, and the pressure of the separation membrane in real time; And

And a data indicator for receiving and displaying data from each of the meters in real time.

A carboxyl group may be generated on the surface of the separation membrane to generate an electrical repulsive force on the surface.

The separation membrane, in which the carboxyl group is generated,

(a) immersing the membrane in a reactor containing pure or deionized water;

(b) introducing a radical initiator into the reactor to induce an unstable state by breaking the double bond between the surface of the separator and the interior of the pores with oxidizing power of the OH radical;

(c) adding a carboxyl group-containing monomer to the reactor and allowing the monomer or carboxyl group-containing monomer to react with the carboxyl group-containing monomer on the surface or pore of the separator; And

(d) withdrawing the separation membrane in which a carboxyl group having a negative charge is formed on the surface from the reactor.

In addition, the present invention may further include a control unit for stopping the water treatment process of the mobile water treatment unit and controlling the washing process by the mobile chemical cleaning unit to be operated when the outflow water amount delivered from the flow rate meter is less than a predetermined outflow water flow rate .

The effect of the present invention is clear. The pretreatment unit, the water treatment unit, and the cleaning unit can operate systematically to improve water treatment efficiency and management efficiency.

Further, each of the components of the pretreatment unit, the water treatment unit, and the cleaning unit can be moved individually, so that it is very easy to carry or move, and each combination or separation is free.

By conducting the water treatment using the separation membrane in which the carboxyl group is generated, it is possible to prevent the formation of nutrients of the biofilm on the surface of the membrane by causing an electric repulsive force on the surface of the separation membrane subjected to water treatment.

On the other hand, even if the effects are not explicitly mentioned here, the effect described in the following specification, which is expected by the technical features of the present invention, and its potential effects are treated as described in the specification of the present invention.

1 is a diagram of a mobile water treatment system in accordance with an embodiment of the present invention.
2 is a view showing a main screen of a data indicator according to an embodiment of the present invention.
FIG. 3 is a graph showing the electrical conductivity of the treated water passing through the separator vessel of the mobile water treatment system according to an embodiment of the present invention, the flow rate of the influent flow, and the pressure of the separation membrane in real time.
FIG. 4 is a graph showing the flow rate of purified water flowing into the separator vessel at an initial stage of operation of the mobile water treatment system according to an embodiment of the present invention and the flow rate of the purified water flowing in real time.
FIG. 5 is a graph showing a flow rate of a purified water flowing into a separator vessel at the end of operation of the mobile water treatment system according to an embodiment of the present invention, and a flow rate of the purified water flowing in the separator vessel.
FIG. 6 is a graph showing a flow rate of purified water flowing into a chemical recovery chamber of a chemical cleaning section of a mobile water treatment system according to an embodiment of the present invention, and a flow rate of the purified water flowing into the membrane separation chamber in real time.
FIG. 7 is a view illustrating a process in which a carboxyl group is formed on a surface of a separation membrane according to an embodiment of the present invention.
8 is an analysis of the surface of the separation membrane after the reaction between the separation membrane and the carboxyl group-containing monomer proceeds.
It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, an embodiment of a mobile water treatment system according to the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, The description will be omitted.

1 is a diagram of a mobile water treatment system in accordance with an embodiment of the present invention.

As shown in FIG. 1, the mobile water treatment system according to the present invention includes a mobile pre-treatment unit 100, a mobile water treatment unit 200, and a mobile chemical cleaning unit 300.

The mobile preprocessing unit 100 includes a raw water reservoir 110, a preprocessing filter 120, a pretreatment water reservoir 130, and a first mobile carrier 140.

The raw water storage tank 110 is a place where raw water is stored. The raw water storage tank 110 may be composed of a rectangular PE tank, and includes a valve for controlling the flow of raw water and a level meter for measuring the amount of raw water.

The raw water stored in the raw water storage tank 110 is moved to the pre-processing filter 120 by a raw water inflow pump for pre-processing. The inflow pump is a horizontal multistage pump and may be formed of stainless steel.

The preprocessing filter consists of a total of eight filters, consisting of four microfilters and four carbon block filters. The raw water moved from the raw water storage tank 110 passes through a primary microfilter, a primary carbon block filter, a secondary carbon block filter, and a secondary microfilter. Each filter has a structure in which two filters are arranged side by side in parallel.

That is, after two primary microfilters, two primary carbon block filters are arranged in parallel, and then a secondary carbon block filter and a secondary microfilter are arranged in parallel in pairs.

Before moving the raw water to the water treatment process in earnest, the pretreatment is performed through the micro filter and the carbon block filter so that the water treatment function can be smoothly performed.

The pretreated water having passed through the eight pretreatment filters 120 is moved to the pretreatment water storage tank 130. The pretreatment water storage tank 130 temporarily stores the pretreatment water before the pretreatment water moves to the mobile water treatment unit 200.

The pretreatment water having the pretreatment water storage tank 130 so that the pretreatment water having passed through the pretreatment filter 120 can be temporarily stored in the pretreatment water storage tank 130 without being moved directly to the mobile water treatment unit 200, 200), the pretreatment process of the raw water can be continued. That is, when cleaning the separation membrane of the mobile water treatment unit 200, the mobile line in which the pretreatment water moves is locked from the pre-water storage tank to the mobile water treatment unit 200, the pre-treatment process is performed in the mobile pre- In the processing unit 200, a cleaning process may be performed. That is, two different processes can proceed simultaneously.

The mobile preprocessing unit 100 according to the present invention includes a first mobile carrier 140. The first mobile carrier 140 supports the raw water storage tank 110, the pre-treatment filter 120, and the pretreating water storage tank 130 at the upper portion thereof, and is freely movable with a movable wheel formed therebelow.

Since the wheels are formed at the lower part of the mobile preprocessing unit 100, it is easy to move and transport the mobile preprocessing unit 100 and the combination and separation of the mobile preprocessing unit 100 and the mobile water treatment unit 200 Free and easy.

The mobile water treatment unit 200 is connected to the pretreatment water storage tank 130 to treat the pretreatment water by using a separation membrane. The water treatment unit 200 supports the separation membrane vessel 210 having the separation membrane and the separation membrane vessel 210, And a second movable carrier 220 which can be transported.

The separation membrane may include an ultrafiltration membrane or a reverse osmosis membrane.

The mobile water treatment unit 200 further includes a UV sterilizer, a control unit, and the like in addition to the separation membrane vessel 210 provided with a separation membrane. The mobile water treatment unit 200 applies RO (reverse osmosis membrane) level separator vessel 210 so as to apply various porous membranes for water treatment. The treated water passing through the separator vessel 210 can enable disinfection of the treated water through the UV sterilizer.

The mobile water treatment unit 200 includes a meter capable of measuring in real time the flow rate of the influent water flowing into the separator vessel 210, the flow rate of the effluent water, the electric conductivity of the effluent water, and the pressure of the separation membrane.

These meters are coupled to the portable water treatment unit 200 to measure each, and transmit the data to the data indicator. The data indicator can receive and display data from each instrument in real time. The data indicator

At this time, the concept of real time may include minute units or predetermined time units. That is, the data logging and the real-time data information are updated every minute, so that the user can confirm such data on a minute-by-minute basis. The data indicator may also graphically represent such data.

Furthermore, such data can be downloaded as an Excel sheet on a daily basis, and a database for on-site operation can be secured based on the downloaded data.

2 is a view showing a main screen of a data indicator according to an embodiment of the present invention. As shown in FIG. 2, the inflow flow rate, the outflow flow rate, the electrical conductivity, and the pressure of the separation membrane of the process water can be displayed in the data indicator in real time. The user can confirm the correct operation of the mobile water treatment system by checking the data indicator.

FIG. 3 is a graph showing the electrical conductivity of the treated water passing through the separator vessel 210 of the mobile water treatment system according to an embodiment of the present invention, the flow rate of the influent flow, and the pressure of the separator in real time.

Referring to FIG. 3, the user checks the inflow flow rate (flow 1), outflow flow rate (flow rate 2), treated water conductivity, and separation membrane pressure of the treated water passing through the separator vessel 210 every minute displayed on the data indicator .

FIG. 4 is a view showing the flow rate of the purified water flowing into the separator vessel 210 at the beginning of the operation of the mobile water treatment system according to an embodiment of the present invention and the flow rate of the purified water flowing in real time. 5 is a graph showing the flow rate of the purified water flowing into the separator vessel 210 at the end of the operation of the mobile water treatment system according to an embodiment of the present invention and the flow rate of the purified water flowing in real time. FIG. 6 is a graph showing real-time measurements of flow rate and flow rate of purified water flowing into the separating membrane vessel 210 after the cleaning of the chemical washing section of the mobile water treatment system according to an embodiment of the present invention.

4 to 6, FIG. 4 shows an inflow rate and an outflow rate of treated water (purified water) of the separation membrane higher than that of FIG. This means that the membrane was not so contaminated at the beginning of the water treatment process.

As the water treatment process proceeds, the inflow and outflow rates of the treated water decrease as shown in FIG. When the inflow and outflow rates are measured to be less than a certain flow rate, the water treatment process can be stopped and the cleaning process can be performed by the chemical cleaning section.

6, it can be seen that the flow rate and flow rate of the purified water flowing into the recovery membrane 210 after the washing of the separation membrane by the chemical washing section are recovered to some extent similar to the initial influent flow rate and the outflow flow rate.

According to an embodiment of the present invention, the present invention may further include a control unit. The control unit stops the water treatment process of the mobile water treatment unit 200 and controls the cleaning process by the mobile chemical cleaning unit 300 to be operated when the flow rate of the water delivered from the meter of the outflow flow rate is equal to or less than the predetermined flow rate .

In order to control the control unit, a valve for controlling the opening and closing of each line is formed in the treatment water and the cleaning liquid movement line between the movable water treatment unit 200 and the movable chemical cleaning unit 300, As a result, each process can be controlled.

The separation membrane used in the separation membrane vessel 210 according to the present invention may be a surface-modified separation membrane. The surface modified membrane can prevent the formation of nutrients of the biofilm on the membrane surface due to the electrical repulsive force of the surface due to the carboxyl group being formed on the surface of the membrane.

That is, through the surface modification of the separation membrane inserted into the separation membrane vessel 210, the treatment efficiency of the separation membrane can be improved.

According to the present invention, a method for modifying a surface of a membrane by forming a carboxyl group on the membrane comprises: (a) immersing the membrane in a reactor containing pure water or deionized water; and (b) introducing a radical initiator into the reactor. (C) adding the carboxyl group-containing monomer to the reactor and leaving it for a preset time to remove the double bond between the surface of the separator and the surface of the separator by the oxidizing power of the OH radical, Containing monomer and the carboxyl group-containing monomer, and (d) removing the separation membrane having a carboxyl group having a negative charge on the surface from the reactor.

In detail, first, for the modification of the separation membrane, the separation membrane is immersed in a reactor containing pure water or ultra pure water. By adding a radical initiator, it is possible to induce an unstable state by breaking the double bond on the surface of the separation membrane and the inside of the pore using the high oxidizing power of the OH radical.

As the radical initiator, sodium metabisulfate (Na2S2O5), sodium persulfate (Na2S2O8), ammonium persulfate ((NH4) 2S2O8), etc. may be used. The radical initiator is for generating the oxidizing power of the OH radical and can be optimally selected depending on the type of the carboxyl group-containing monomer used in the graft polymerization. For example, when graft polymerization is carried out with methacrylic acid, sodium metaborate sulfate (Na2S2O5) and sodium persulfate (Na2S2O8) are preferably used as initiators. When graft polymerization is carried out using acrylic acid, ammonium persulfate ((NH4) 2S2O8) and sodium metabisulfate (Na2S2O5) can be used as a radical initiator.

Thereafter, the carboxyl group-containing monomer is added to the reactor and left for the preset time. Then, the carboxyl group-containing monomer reacts with the inside of the surface or pore of the separation membrane induced in an unstable state. The double bond of the separation membrane carbon is broken by the carboxyl group-containing monomer, and the binding is carried out in the vicinity of the surface of the separation membrane or the pore, for the stabilization. Then, when the reaction of the membrane occurs over time in the same manner as the first reaction with time, the carboxyl group having a negative charge is finally formed on the surface of the membrane.

FIG. 7 is a view illustrating a process in which a carboxyl group is formed on a surface of a separation membrane according to an embodiment of the present invention.

As shown in FIG. 7 (a), when a reagent such as Na 2 S 2 O 5 and Na 2 S 2 O 8 is added to a solute (ultrapure water) on the surface of iron oxide, the two salt solutions serve as a reaction initiator. Radicals generated in the water are SO4 and S2O5 induce OH, and the strong oxidizing power of OH leads to the unstable state by cutting off the double bond between the surface of the surrounding iron oxide and the inside of the pore.

Referring to FIG. 7 (b), methacrylic acid is added immediately to form a bond in the vicinity of the iron oxide and the iron oxide surface or inside the cavity to break the C═C double bond and induce stabilization. Time can be a variable and the reaction can take place over time in the same form as the first reaction.

As shown in FIG. 7, when a radical initiator is added and high oxidizing power of the OH radical is used, the double bonds in the surface of the separator and the vacancies are broken to be unstable, and then carboxyl group-containing monomers are added to the surface of the separator in an unstable state Resulting in a carboxyl group having a negative charge.

At this time, the carboxyl group-containing monomer may be any one of methacrylic acid, acrylic acid, fumaric acid, crotonic acid, itaconic acid and citraconic acid. The carboxyl group-containing monomer may be added to the pure / ultrapure water solution in an amount of 1 to 10% (v / v).

8 is an analysis of the surface of the separation membrane after the reaction between the separation membrane and the carboxyl group-containing monomer proceeds. The surface of the membrane was analyzed using FT-IR to confirm presence or absence of carboxyl groups. Control UF in Fig. 8 represents an ultrafiltration membrane that has not undergone surface modification, and MA-UF represents a ultrafiltration membrane in which a carboxyl group is formed on the surface by reaction with methacrylic acid. As can be seen from FIG. 8, it can be seen that C = O stretch is detected in MA-UF that has undergone surface modification compared with Control UF.

The portable water treatment unit 200 of the present invention includes a second mobile carrier 220. The second mobile carrier 220 supports a separation membrane cell 210 or the like at an upper portion thereof, and is movable with a wheel formed at a lower portion thereof.

Since the mobile water treatment unit 200 can be easily moved and carried including the wheels and the like, the coupling and separation with the mobile pre-treatment unit 100 and the mobile chemical cleaning unit 300 can be greatly facilitated.

The mobile chemical cleaning section 300 includes a treated water storage tank 310, a CIP tank 320, and a third mobile carrier 330.

The process water storage tank 310 stores the process water that has passed through the separator vessel 210. The CIP tank 320 receives the cleaning solution for cleaning the separation membrane of the separation membrane cell 210, and supplies the cleaning solution to the separation membrane when the separation membrane is cleaned.

A third mobile carrier 330 including a wheel is formed under the mobile chemical cleaner 300. The movement and transportation of the mobile chemical cleaner 300 through the structure of the third mobile carrier 330 The removal and separation of the mobile chemical cleaning part 300 with the mobile water treatment part 200 can be greatly facilitated.

The scope of protection of the present invention is not limited to the description and the expression of the embodiments explicitly described in the foregoing. It is again to be understood that the present invention is not limited by the modifications or substitutions that are obvious to those skilled in the art.

100: Portable pre-
110: raw water storage tank
120: Pretreatment filter
130: Pretreatment water storage tank
140: first mobile carrier
200: mobile integer processing unit
210: separator vessel
220: second mobile carrier
300: mobile chemical cleaning agent
310: Treated water storage tank
320: CIP tank
330: Third mobile carrier

Claims (5)

A pretreatment filter connected to the raw water storage tank and having a plurality of microfilters and a plurality of carbon block filters to be pretreated by moving the raw water, a pretreatment water storage tank for storing the pretreated water through the pretreatment filter, And a first mobile carrier supporting the raw water reservoir, the pretreatment filter, and the pretreating water reservoir at an upper portion thereof and being formed with a wheel at a lower portion thereof;
And a second mobile carrier supported by the separator membrane and having a wheel at a lower portion thereof, wherein the separator membrane is connected to the pretreatment water reservoir and the pretreatment water is treated by a separator, A mobile water treatment unit; And
A CIP (Cleaning in Place) tank connected to the separation membrane vessel for storing the treated water that has passed through the separation membrane vessel, a CIP (Cleaning in Place) tank connected to the separation membrane vessel for supplying a cleaning solution for cleaning the separation membrane of the separation membrane vessel, And a movable chemical cleaner including a treatment water storage tank, a third movable carrier supporting the CIP tank and being formed with a wheel at a lower portion thereof,
And a movement line connecting the pretreatment water storage tank and the movable water treatment section, wherein the movement line can be locked to control the movement of the pretreatment water, so that even when the separation membrane of the movable water treatment section is being cleaned, So that the pre-processing step of the pre-
Connected to the mobile water treatment unit,
Each of the meters measuring the electrical conductivity of the treated water passing through the separation membrane cell, the inflow flow rate, the outflow flow rate, and the pressure of the separation membrane in real time; And
Further comprising a data indicator for receiving and displaying data from each of the instruments in real time,
Characterized in that a carboxyl group is generated so as to cause an electric repulsive force on the surface of the separation membrane.
Removable water treatment system. delete delete The method according to claim 1,
The separation membrane, in which the carboxyl group is generated,
(a) immersing the membrane in a reactor containing pure or deionized water;
(b) introducing a radical initiator into the reactor to induce an unstable state by breaking the double bond between the surface of the separator and the interior of the pores with oxidizing power of the OH radical;
(c) adding a carboxyl group-containing monomer to the reactor and allowing the monomer or carboxyl group-containing monomer to react with the carboxyl group-containing monomer on the surface or pore of the separator; And
(d) removing the separating membrane on which a carboxyl group having a negatively charged functional group is formed from the reactor.
Removable water treatment system. The method according to claim 1,
And a control unit for stopping the water treatment process of the mobile water treatment unit and controlling the washing process by the mobile chemical cleaning unit to be operated when the outflow water volume delivered from the water flow meter is less than a predetermined outflow water volume, doing,
Removable water treatment system.

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