KR102259132B1 - defect inspection method of filter membrane module for electroplated paint recovery - Google Patents

Abstract

A defect inspection method of a filter separation membrane module for purifying electrodeposition paint is provided. The defect inspection method of the filter separation membrane module for purifying electrodeposition paint according to an embodiment of the present invention comprises the steps of: (1) preparing an influent raw water of a paint solution having a turbidity of 80 to 120 NTU and a paint concentration of 80 to 120 ppm, and measuring the turbidity. (2) filtering the inflow source water through a filter device to obtain permeated water, and (3) measuring the turbidity of the permeate water to check whether the turbidity of the inflow source water and the permeate water satisfies Equation 1 below. It is carried out including steps. According to this, it is possible to determine whether there is a leak or defect in the separation membrane for the paint to be applied at the actual site without using additional processes and equipment, thus maximizing the efficiency for the electrodeposition process and reducing process costs. As it has economic feasibility, it can be applied in various fields in the field of separation membranes for various electrodeposition coatings.
[Equation 1]
0.3 NTU((Nephelometric turbidity units) ≥ permeate NTU-influent NTU

Description

Defect inspection method of filter membrane module for electroplated paint recovery}

The present invention relates to a defect inspection method of a filter separator module, and more particularly, it is possible to accurately predict even minute defects, thereby improving the efficiency of the purification process and at the same time not requiring additional equipment and space. The present invention relates to a defect inspection method of a filter separator module that is advantageous in terms of simplicity and can be applied to a filter separator module for stabilizing various electrodeposition paints.

Painting can be broadly classified into spray coating, electrostatic coating, and electrodeposition coating. The spray painting is a method of spraying paint on the object to be coated with a spray gun, and the electrostatic painting is a method of spraying and painting the paint ionized by charging the object to be coated, and the electrodeposition painting is a method of applying an electric current to the object to be coated. It is a coating method of forming a coating film on the surface.

At this time, the electrodeposition coating, unlike spray coating, becomes inactive when the amount of electricity reaches a certain time, so that the coating film is not formed beyond a certain thickness, so that a coating film of a uniform thickness can be formed, and the consumption of the coating material is compared with other coating processes. Since it is remarkably small, it can help to reduce cost, and because it is a water-soluble paint, it is not only eco-friendly, but also has the advantage of being able to respond flexibly to other environmental regulations. Furthermore, it is used in a wide range of industries because of its relatively excellent rust prevention properties, uniformity of coating film, peelability and stability.

On the other hand, since the coating material used in the electrodeposition process is relatively expensive, a separator module for electric vehicle paint purification that is reused by separating and recovering it has been introduced. According to the pore size of the separator provided in the separator module, a precision filtration membrane (MF), Ultrafiltration membranes (UF), nanoseparation membranes (NF), or reverse osmosis membranes (RO) are used.

At this time, the separation membrane module accurately predicts the recovery rate of the electrodeposition paint for purification and reuse of the electrodeposition paint, and detects whether the electrodeposition paint is purified to meet the designed filtration and reuse rate, and whether there is no leakage due to defects, etc. Inspection of the membrane module is required.

As a method of inspecting defects in the separation membrane module for electrodeposition coating, the leaking dye is detected by fluorescence, or the gas is pressurized or decompressed from the raw water line or the production water line after wetting the membrane module to change the pressure and the degree of gas flow. There is a way to check for defects in the membrane module by checking.

However, such a conventional membrane module defect inspection method has a problem that only limited inspection of dyes detected by fluorescence is possible, and the accuracy of detection is degraded depending on the amount of leakage. In addition, the defect inspection method of the decompression and pressurization method has low detection power for minute defects in the membrane, and it is difficult to predict the exact leakage phenomenon of the raw material to be applied as raw water. When adapting to raw materials, problems such as leakage of raw materials may occur. Moreover, the above method has a sufficient effect to perform defect inspection in a small-sized module, but there is a problem in that it is difficult to expect a sufficient effect when inspecting the presence or absence of a defect because a large module has a plurality of separators inside.

Therefore, there is an urgent need for research on an efficient and economical method for inspecting defects of separation membrane modules for electrodeposition paint purification by accurately and quickly detecting defects in separation membrane modules and not adding additional processes and equipment at the same time.

Registered Patent Publication No. 10-0871440

The present invention was conceived in consideration of the above points, and an object of the present invention is to provide a defect inspection method of a filter separation membrane module for electrodeposition paint refining that can improve the efficiency of the electrodeposition process by inspecting defects in the separation membrane module by a simple method. .

In addition, the present invention is applied to the separation membrane module used in the actual electrodeposition process and inspects the actual electrodeposition paint, thereby saving time and cost by performing the inspection through a separate facility during the electrodeposition process. Another object is to provide a defect inspection method of a filter separator module for purifying electrodeposition paint.

In addition, the present invention can be applied in various industrial fields through a simple method of determining the presence or absence of defects by analyzing the paint contained in the discharged permeate by permeating the paint to be actually applied to the separation membrane module under conditions of a certain concentration, pressure, and recovery rate. Another object is to provide a defect inspection method of a filter separation membrane module for purification of electrodeposited coatings.

In order to solve the above problems, the present invention provides a method for inspecting defects in a filter separator module for electrodeposition paint purification, (1) preparing an inflow source water of a paint solution having a turbidity of 80 to 120 NTU and a paint concentration of 80 to 120 ppm, and turbidity. And (2) obtaining permeated water by filtering the incoming source water through a filter separation membrane module, and (3) measuring the turbidity of the permeated water, so that the turbidity of the incoming source water and the permeated water is expressed in Equation 1 below. It provides a defect inspection method of a filter separation membrane module for electrodeposition paint purification comprising the step of inspecting whether it is satisfied.

[Equation 1]

0.3 NTU ≥ Permeate water turbidity NTU-Influent source water turbidity NTU

In addition, the step (2) may be a step of obtaining permeated water by filtering the inflow source water through a filter separation membrane module under conditions of a recovery rate of 40 to 60% and a pressure of 10 to 400 psi.

In addition, the filter separation membrane module includes a separation membrane, and the separation membrane may be an ultrafiltration membrane (UF) or a microfiltration membrane (MF).

In addition, the average pore diameter of the separation membrane may be 0.01 ~ 10 μm.

In addition, the separator may include any one or more polymer materials selected from the group consisting of polysulfone-based, polyamide-based, polyimide-based, polyester-based, olefin-based, fluorinated, polybenzoimidazole and polyacrylonitrile. have.

In addition, the present invention provides a filter separation membrane module for purifying electrodeposition paints that checks whether the turbidity of the inflow source water and permeate water having a turbidity of 80 to 120 NTU and a paint concentration of 80 to 120 ppm satisfies Equation 1 below. .

[Equation 1]

0.3 NTU ≥ Permeate water turbidity NTU-Influent source water turbidity NTU

Further, according to an embodiment of the present invention, the filter separation membrane is a spiral wound module, a filter separation membrane module for purifying electrodeposition paint.

In addition, the filter separation membrane module includes a separation membrane, and the filter separation membrane may be an ultrafiltration membrane (UF) or a microfiltration membrane (MF).

In addition, the present invention provides a filter device including the filter separation membrane module described above.

According to the present invention, it is possible to determine the presence or absence of defects in the separation membrane and leakage of the paint intended to be applied at the actual site without using additional processes and equipment, thereby maximizing the efficiency for the electrodeposition process and greatly reducing the process cost. It can be applied in various fields in the field of separation membranes for refining various electrodeposition paints, as it has excellent economic feasibility.

1 is a flow chart of a defect inspection method of the separation membrane module for electrodeposition paint purification according to the present invention,
2 is a schematic diagram showing a filter device including a separator module according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein.

As shown in Figure 1, the defect inspection method of the filter separation membrane module for purifying electrodeposition paint according to the present invention includes (1) preparing an influent source water of a paint solution having a turbidity of 80 to 120 NTU and a paint concentration of 80 to 120 ppm, and adjusting the turbidity. The measuring step (2) is carried out including the step of obtaining permeated water by filtering the influent raw water through a filter separation membrane module.

On the other hand, wastewater generated from a general electrodeposition process contains a highly viscous, refractory colloidal paint component, making it difficult to apply a biological treatment process or a membrane filtration process. However, since wastewater generated in the electrodeposition process contains a significant amount of electrodeposition paint, it is not only very uneconomical to dispose of it as it is, it is not desirable in terms of eco-friendliness. Therefore, research on a technology for separating and recovering expensive paint materials by filtering wastewater generated in the electrodeposition process using a separator for electrodeposition paint purification and reusing purified water is being conducted.

At this time, in order to use the process of reusing the purified electrodeposition paint among the continuous processes through such a purification process, regular and accurate inspection of the separator for electrodeposition paint purification must be performed in parallel. That is, it is necessary to inspect the filter separation membrane module for electrodeposition paint purification, which can improve the efficiency of the purification process for the permeated water through accurate prediction of the inflow source water and permeate water including the electrodeposition paint.

However, the conventional inspection method for the filter separator module for electrodeposition paint refining requires a separate facility and space, or may have disadvantages in terms of increasing process cost and simplification of the process. Due to the difficulty of accurate prediction, there are restrictions on improving the efficiency of the purification process through regular inspections on the filter separator.

Accordingly, the defect inspection method of the filter separation membrane module for purifying electrodeposition paint according to the present invention includes the step (3) of measuring the turbidity of the permeated water and inspecting whether the turbidity of the inflow source water and the permeated water satisfies the following equation (1). By including and performing additional processes and equipment, it is possible to determine whether there is a leak in the paint to be applied at the actual site and defects in the separator, thereby maximizing the efficiency of the electrodeposition process and greatly saving the process cost. have.

[Equation 1]

0.3 NTU((Nephelometric turbidity units) ≥ permeate NTU-influent NTU

First, as step (1) of the present invention, a step of preparing the inflow source water of an aqueous paint solution is performed.

The inlet water is raw water including an electrodeposition paint used in an electrodeposition coating process for automobiles, home appliances, or related parts, and in particular, may be an inflow source water including an electrodeposition paint used in an automobile electrodeposition coating process. In addition, the inflow source water may have a turbidity of 80 to 120 NTU, and the electrodeposition paint may be included in a concentration of 80 to 120 ppm. However, this is a numerical value that can be appropriately selected according to the electrodeposition coating process described above, and if the electrodeposition process is applied to a vehicle according to an example of the present invention, the inflow source water has a turbidity of 85 to 110 NTU and a turbidity of 90 to 110 ppm. It may contain a concentration of electrodeposition paint. If the turbidity of the inflow source water is less than 80 NTU or the concentration of the electrodeposition paint included in the inflow source water is less than 80 ppm, the turbidity of the permeated water passing through the defective module is measured to be lower than the standard value, thereby reducing the reliability of the inspection. If the turbidity of the influent source water exceeds 120 NTU or the concentration of the electrodeposition paint contained in the inflow source water exceeds 120 ppm, the turbidity of the permeated water passing through the normal module is measured higher than the standard value and inspected. There may be a problem of deteriorating the reliability of.

Next, in step (2) of the present invention, the inflow water is filtered through a filter separation membrane module to obtain permeated water.

The filter separation membrane module 100 includes an outlet pipe 100a and a separation membrane 100b, and is included in the housing 170 as shown in FIG. 2 to provide a raw water tank 110, a first pipe 120, and an inflow pipe. Inlet water through the filter device 10 including the raw water pump 130, the second pipe 140, the first valve 150, the pressure gauge 160, the second valve 10 and the outlet 190 Permeated water can be obtained by filtering through the filter separation membrane module.

In the raw water tank 100, the electrodeposition paint actually used during the operation of the electrodeposition process is included as the inflow source water. There is no particular limitation on the shape.

The raw water tank 100 is connected to the inflow raw water pump 130 through the first pipe 120, and the inflow raw water can be supplied to the separation membrane 100b through the second pipe 140 at a predetermined pressure. At this time, the supply pressure for supplying the inflow source water to the separation membrane 100b may be appropriately selected within the range of 10 to 40 psi in consideration of the working pressure of the filter device 10, and preferably in the range of 10 to 30 psi. I can. If the supply pressure is less than 10 psi, there may be a problem that the turbidity of the permeated water passing through the defective module may be measured lower than the reference value. In addition, if the supply pressure exceeds 40 psi, There may be a problem in that the turbidity of the permeate may be measured higher than the reference value.

In addition, the permeated water recovered in step (2) may have a recovery rate of 40 to 60% compared to the inflow source water. If the permeate water is recovered less than 40% of the inflow source water, there may also be a problem that the turbidity of the permeate passing through the defective module may be measured lower than the reference value, and if the permeate water exceeds 60% of the inflow source water If there is a recovery condition such as, there may be a problem in that the turbidity of the permeated water passing through the normal module may be measured higher than the reference value.

At this time, the separator 100b includes any one or more polymer materials selected from the group consisting of polysulfone-based, polyamide-based, polyimide-based, polyester-based, olefin-based, fluorinated, polybenzoimidazole, and polyacrylonitrile. In particular, when the separation membrane 100b is used for automotive electrodeposition coating, a separation membrane including at least one or more polymer compounds of polyacrylonitrile, polysulfone-based, and fluorinated-based may be provided.

At this time, the separation membrane may be a precision filtration membrane (MF), an ultrafiltration membrane (UF), a nano-separation membrane (NF), or a reverse osmosis membrane (RO), which is a known separation membrane 100b used as a purification filter membrane 100b in the electrodeposition process. More preferably, it may be an ultrafiltration membrane (UF) or a microfiltration membrane (MF).

In this case, the average pore diameter of the separation membrane 100b may be 0.01 to 10 μm, more preferably 0.1 to 2 μm. If the average pore diameter of the separation membrane is less than 0.01 μm, there may be a problem that the turbidity of the permeated water passing through the defective module may be measured lower than the reference value, and if it exceeds 10 μm, the turbidity of the permeated water passing through the normal module may be There may be a problem that can be measured higher than the reference value.

Next, as step (3) of the present invention, the turbidity of the permeate is measured, and a step of checking whether the turbidity of the inflow source water and permeate water satisfies Equation 1 below is performed.

[Equation 1]

0.3 NTU((Nephelometric turbidity units) ≥ permeate NTU-influent NTU

In the step (3), the electrodeposition paint used in the actual electrodeposition process is used as the inlet water, the turbidity thereof is measured, the turbidity of the recovered permeate water is measured, and the difference in turbidity is examined to detect the defect of the filter separation membrane module. Step.

That is, the step (3) is a line leak, CP leak, or scratch on the membrane, which may cause the inflow source water to leak due to defective bonding in the process of bonding the membrane to the membrane or the membrane to the membrane when manufacturing the membrane module. , Defects such as pinhole defects can be determined by comparing the numerical values by substituting them in simple and simple Equation 1, which is not only economical compared to known technologies that require a separate facility or space, but also contributes greatly to process simplification. have.

However, since the NTU value expressing the turbidity may vary depending on the concentration of the influent water, the process pressure, or the recovery rate conditions, the above conditions must be designed in advance and step (3) should be performed. More specifically, as an example of a normal separation membrane in which defects in the separation membrane do not occur, the value of Equation 1 represents a value of 0.3 NTU or less under conditions of 100 ppm of inflow source water concentration, 20 psi pressure, and 50% recovery rate, More preferably, it may represent a value of 0.2 or less.

In addition, as an example of the occurrence of a defect in the separation membrane, in the case of a line leak failure due to a bonding failure between the separation membrane and the separation membrane, the inflow source water concentration of 100 ppm, a pressure of 20 psi, and the expression of Equation 1 above under the conditions of a 50% recovery rate. A value may represent a value of 0.5 to 0.7.

Another example of the occurrence of defects in the separation membrane, when CP leak defects occur due to poor bonding between the separation membrane and CP, the value of Equation 1 is 0.7 under conditions of a concentration of 100 ppm of incoming raw water, a pressure of 20 psi, and a recovery rate of 50%. It can represent a value of ~ 0.9.

Another example of the occurrence of defects in the separation membrane, in the case of membrane defects such as scratches, folding, and pinhole defects in the separation membrane itself, the above math under conditions of 100 ppm of influent source water concentration, 20 psi pressure, and 50% recovery rate. The value of Equation 1 can represent a value of 0.4 to 0.6.

In addition, the present invention provides a filter separation membrane module for purifying electrodeposition coatings that checks whether the turbidity of the inflow source water and the permeate water to the paint aqueous solution satisfies Equation 1 below. [Equation 1]

0.3 NTU ≥ Permeate water NTU-Inflow source water NTU

At this time, the filter separation membrane may have a known shape that can be used for electrodeposition coating, but preferably may be a spiral wound module. The configuration of the filter separation membrane module is the same as the description of the defect inspection method of the filter separation membrane module described above, so a description of the overlapping portion will be omitted.

In addition, the present invention provides a filter device including the filter separation membrane module. At this time, the filter device includes a raw water tank in which the inflow raw water is stored, a first pipe connected to the raw water tank to move the inflow raw water, an inflow raw water pump moving the inflow raw water at a constant pressure, and a second pipe connected to the inflow pump. , A first valve, a PG, and a separation membrane module.

Hereinafter, the present invention will be described in more detail through the following examples. The following examples are provided to illustrate the present invention, and the scope of the present invention is not limited by the following examples.

[ Example ]

Example 1. Manufacturing of membrane module and measurement of turbidity

Polyacrylonitrile polymer is applied to a support made of PET non-woven fabric with an average pore size of 4.81 cc/cm ² /sec, and then washed with pure water to have a thickness of 150 μm and an average pore size of 0.1 to 2 The first and second separation membranes having a μm and a molecular weight fraction of 200,000 to 300,000 Da were prepared.

Thereafter, the first and second separation membranes are cut into a length of 1000 mm in width and length, and the permeate flow path (tricoat) and the influent flow path (mesh) are cut to have the same size, so that the first separator-permeate flow path (tricoat)-second It was laminated in a sandwich manner in the order of the separator-inflow water flow path (mesh). At this time, the polymer layer of the separator faced outward, and the three edges of the first separator-permeable water passage (tricoat)-second separator were bonded to a thickness of 20 mm using a bond. On top of that, the influent flow path (mesh) is stacked, starting with the unbonded side, winding the permeate outflow pipe (CP) in the form of a roll, and bonding the both ends of the unbonded side and the outflow pipe again. The separation membrane module was manufactured by bonding with.

Thereafter, as shown in FIG. 2, a filter device including the separation membrane module was manufactured under conditions of a concentration of 100 ppm of raw water, a pressure of 20 psi, and a recovery rate of 50%.

Example 2, 3, Comparative example 1 to 8

A separation membrane module was manufactured in the same manner as in Example 1, but the separation membrane module was manufactured to have the conditions shown in Table 1.

division Membrane module Inflow source water Pressure (psi) Recovery rate (%) Concentration (ppm) Turbidity (NTU) Example 1 100 100 20 50 Example 2 100 100 30 50 Example 3 100 100 20 40 Comparative Example 1 150 100 20 50 Comparative Example 2 300 100 20 50 Comparative Example 3 50 100 20 50 Comparative Example 4 100 100 50 50 Comparative Example 5 100 100 5 50 Comparative Example 6 100 100 100 50 Comparative Example 7 100 100 20 30 Comparative Example 8 100 100 20 70

[ Experimental example ]

Experimental example 1. Line Leak

A line leak was generated in the separation membrane module provided in the filter devices manufactured in Examples and Comparative Examples, and the turbidity of the inflow source water and permeate water was measured, and this is shown in Table 2. In the step of bonding the three edges of the first separation membrane-the permeate flow path (tricoat)-the second separation membrane with a bond, the line leak caused a leak by making a 1 to 2 mm unbonded portion on the bond line on one side. .

Experimental example 2. CP Leak

CP leaks were generated in the separation membrane module provided in the filter devices prepared in Examples and Comparative Examples, and the turbidity of the inflow source water and permeate water was measured, and these are shown in Table 2. The CP leak generated a leak by making an unbonded portion of 1 to 2 mm in the step of bonding both ends of the unbonded surface and the outlet pipe with a bond.

Experimental example 3. Membrane defect (defect)

Membrane defects were generated in the separation membrane module provided in the filter devices prepared in Examples and Comparative Examples, and the turbidity of the inflow source water and permeate water was measured, and these are shown in Table 2. The membrane defect was caused by making a scratch of about 1.5 cm on the first and second separation membranes using an awl.

division normal Line Leak CP Leak Membrane defect Example 1 0.12 0.58 0.78 0.51 Example 2 0.13 0.65 0.81 0.55 Example 3 0.11 0.55 0.71 0.46 Comparative Example 1 0.13 0.42 0.58 0.21 Comparative Example 2 0.1 0.48 0.55 0.16 Comparative Example 3 0.08 0.13 0.18 0.24 Comparative Example 4 0.48 0.77 0.81 0.62 Comparative Example 5 0.09 0.15 0.27 0.42 Comparative Example 6 0.61 0.84 0.95 0.66 Comparative Example 7 0.1 0.45 0.51 0.15 Comparative Example 8 0.45 0.65 0.68 0.95

Unit: NTU

Referring to Tables 1 and 2, in the case of Examples 1 to 3 in which the separation membrane module has a condition within the numerical range of the present invention, when the separation membrane is normal, the value of Equation 1 satisfies a value of 0.3 or less, When a line leak, a CP leak, or a film defect occurred, the value of Equation 1 exceeded 0.3. Therefore, in the case of Examples 1 to 3, it can be seen that the bonding of the separation membrane can be detected through Equation 1 above.

On the contrary, in the case of Comparative Examples 1 to 8 in which the separation membrane module has a condition outside the numerical range of the present invention, even if a defect of the separation membrane occurs, the value of Equation 1 is 0.3 or less, or even if a defect of the separation membrane does not occur. Since a value exceeding 0.3 is shown, it can be seen that defects in the separator cannot be inspected through Equation 1 above.

Specifically, in the case of Comparative Examples 1 to 3 in which the concentration of the influent source water introduced into the separation membrane module according to the present invention is outside the numerical range of the present invention, the value of Equation 1 is 0.3 or less even though a defect appears in the separation membrane. It can be seen that the defect of the separator cannot be detected by the detection method of the present invention.

In addition, in the case of Comparative Examples 4 to 6 in which the pressure of the separator module according to the present invention has a value outside the numerical range of the present invention, the value of Equation 1 is greater than 0.3 in the normal separator (Comparative Example 4 , 6), even though a defect appears in the separator, since the value of Equation 1 represents a value of 0.3 or less (Comparative Example 5), it can be seen that the detection method of the present invention does not detect the defect of the separator.

Similarly, in the case of Comparative Examples 7 and 8 in which the recovery rate of the separator module according to the present invention is outside the numerical range of the present invention, the value of Equation 1 is greater than 0.3 in the normal separator (Comparative Example 8), even though a defect appears in the separator, since the value of Equation 1 is 0.3 or less (Comparative Example 9), it can be seen that the detection method of the present invention cannot detect the defect of the separator.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and that various substitutions, modifications and changes are possible within the scope of the technical matters of the present invention. It will be obvious to those who have the knowledge of. Therefore, the scope of the present invention is indicated by the claims to be described later, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims (9)

In the defect inspection method of the filter separation membrane module for electrodeposition paint purification,
(1) preparing an inflow source water of an aqueous paint solution having a turbidity of 80 to 120 NTU and a paint concentration of 80 to 120 ppm and measuring the turbidity;
(2) obtaining permeated water by filtering the inflow source water through a filter separation membrane module under a recovery rate condition of 40 to 60% and a pressure condition of 10 to 40 psi; And
(3) measuring the turbidity of the permeated water, and checking whether the turbidity of the inflow source water and permeate water satisfies Equation 1 below; Defect inspection method of the filter separation membrane module for electrodeposition paint purification comprising a.
[Equation 1]
0.3 NTU((Nephelometric turbidity units) ≥ |Permeate NTU-Influent NTU| delete The method of claim 1,
The filter separation membrane module includes a separation membrane,
The separation membrane is an ultrafiltration membrane (UF) or a precision filtration membrane (MF), the defect inspection method of the filter separation membrane module for electrodeposition paint purification. The method of claim 3,
The average pore diameter of the separation membrane is 0.01 ~ 10 μm defect inspection method of the filter separation membrane module for electrodeposition paint purification. The method of claim 3,
The separator is a polysulfone-based, polyamide-based, polyimide-based, polyester-based, olefin-based, fluorinated, polybenzoimidazole and polyacrylonitrile electrodeposition coating containing any one or more selected from the group consisting of Defect inspection method of filter separator module for use. delete delete delete A raw water tank in which the inflow raw water is stored; A first pipe connected to the raw water tank to move the inflow raw water; An inlet raw water pump for moving the inlet raw water at a constant pressure; A second pipe connected to the inlet pump; A first valve; Filter separator module; Pressure gauge; A second valve; And an outlet;
The filter separation membrane module includes an ultrafiltration membrane (UF) or a microfiltration membrane (MF),
The inflow source water contains a paint aqueous solution having a turbidity of 80 to 120 NTU and a paint concentration of 80 to 120 ppm,
Supplying and filtering the influent raw water to the filter separation membrane module at a supply pressure of 10 to 40 psi through the second pipe,
Filter device, characterized in that to obtain the permeated water from the outlet at a recovery rate of 40 to 60%.

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