KR102311845B1 - Microplastics Filtering Apparatus For Salt Field - Google Patents

Abstract

The present invention discloses an apparatus for removing microplastics in concentrated brine for salt use. The disclosed apparatus for removing concentrated brine microplastics for salt use includes: a frame, a pre-filter unit provided in the frame to remove foreign substances contained in the concentrated water by transferring the concentrated water of the salt field, and a pre-filter unit to which the concentrated water is supplied through a water pump; It is connected to the pre-filter unit so that the primary filtered concentrated water passing through the filter unit flows in, and a fine filter unit that removes fine foreign substances from the primary filtered concentrated water, and a fine filter unit that allows the secondary filtered concentrated water passing through the fine filter unit to flow in It is connected to filter microplastics contained in the secondary filtered concentrated water, and discharges purified concentrated water filtered through a purified water drain line having a purified water on/off valve to a salt field crystallizer, and a UF filter through a purified water drain line It is characterized in that it has a filter washing unit connected to the unit and selectively supplying water and compressed air to the uf filter unit to wash the uf filter unit. Therefore, the present invention can prevent the contamination of the sea salt by the microplastic by removing the microplastic contained in the concentrated salt water in the process of producing the sea salt.

Description

Microplastics Filtering Apparatus For Salt Field

The present invention relates to an apparatus for removing microplastics from concentrated brine for salt use, and more particularly, to remove microplastics contained in concentrated brine in the process of producing sea salt to prevent contamination of sea salt by microplastics. It relates to a microplastic removal device for concentrated brine for salt use.

In general, salt not only serves as a seasoning to make food salty, but also maintains health through sodium intake, increases the shelf life of food through salting, and is used in chemical products such as sodium hydroxide (NaOH) and sodium bicarbonate (NaHCO3). It is used for various purposes such as raw materials.

Depending on the source of the raw materials, such salts include sea salt obtained by naturally evaporating seawater, refined salt manufactured by refining seawater by artificial methods such as electrolysis, and rock salt produced by deposition and evaporation of seawater or lakes containing salt. classified as

Among these, sea salt is known to be beneficial to health compared to refined salt because it contains many minerals and moisture such as calcium, magnesium, zinc, potassium, and iron, and is mainly used for making kimchi or making soy sauce and soybean paste.

In order to produce sea salt, it consists of a reservoir that stores seawater, an evaporator that sequentially evaporates seawater received from the reservoir to increase salinity, and a crystalline basin that finally receives concentrated water to produce salt crystals. It is located between the water and the crystallizer, and a sea (water storage), etc., is additionally installed to store brine concentrated to a certain salinity while passing through the evaporator and send it to the crystallizer.

On the other hand, with the recent increase in the use of plastics, many products in use contain microplastics (microbeads), and microplastics generated during use or disposal cannot be recovered and flow into the ocean, causing serious marine pollution. , marine animals and plants consume it, and humans ingest these animals and plants, causing many problems not only in ecosystem pollution but also in human diet.

The problem of microplastics is that contamination occurs not only in direct human ingestion, but also in sea salt produced using seawater. For example, more than 200 microplastics/kg are generated in sea salt produced in Korea.

Therefore, there is a need to improve it.

On the other hand, domestic registration patent No. 10-1688456 (registration date: December 15, 2016) discloses a "salt-only salt water filter".

The present invention was created by the necessity as described above, and it removes foreign substances and microplastics contained in seawater, as well as foreign substances generated in the process of transporting concentrated water in a salt farm that produces sea salt, so that microplastics remain in the sea salt. An object of the present invention is to provide an apparatus for removing microplastics from concentrated brine for salt only.

In order to achieve the above object, an apparatus for removing microplastics for concentrated salt water for salt use according to an aspect of the present invention is provided in the frame and the frame to remove foreign substances contained in the concentrated water by transferring the concentrated water of the salt field, , a pre-filter unit to which the concentrated water is supplied through a water pump, and a fine filter connected to the pre-filter unit so that the primary filtered concentrated water passing through the pre-filter unit flows in, and removes fine foreign substances from the primary filtered concentrated water It is connected to the fine filter unit so that the secondary filtered concentrated water passing through the sub and the fine filter unit flows in to filter the microplastic included in the secondary filtered concentrated water, and is filtered through a purified water drain line having a purified water opening/closing valve A filter washing for discharging purified concentrated water to be purified to a salt field crystallizer, and for washing the filter unit by selectively supplying water and compressed air to the filter unit through the purified water drain line and connected to the filter unit It is characterized by including wealth.

In addition, in the present invention, the pre-filter unit includes a sand filter connected to the water pump to remove foreign substances from the concentrated water, and a bag connecting the sand filter and the fine filter unit to filter the concentrated water filtered by the sand filter. It is characterized in that it includes a filter.

In addition, in the present invention, the fine filter unit is connected to the bag filter, the primary filtration concentrated water filtered by the bag filter is introduced and filtered, and it is characterized in that it is connected to the uf filter unit through a filtered concentrated water transfer line.

In addition, in the present invention, the filter washing unit includes a drain washing member connected to the UV filter unit to supply washing water in a direction opposite to the filtration direction of the UV filter unit, and selectively heating the washing water to wash the UV filter unit; It characterized in that it comprises an air cleaning member for supplying compressed air in the filtration direction of the filter unit through the filtration concentrated water transfer line to remove foreign substances from the filter unit.

In addition, in the present invention, the drain washing member is provided in the frame to be connected to the purified water drain line through a washing water supply line, and a washing water storage tank in which the washing water supplied from the washing water supply member is introduced and stored; and the washing water storage tank It is characterized in that it comprises a heating member provided in the washing water to heat, and a circulation pump installed in the washing water supply line to transfer the washing water from the washing water storage tank to the uf filter unit.

In addition, in the present invention, the filter washing unit, it is provided in the frame to selectively supply the washing water to the drain washing member, characterized in that it further comprises a washing water supply member for filtering the washing water through a washing water filtration filter.

In addition, in the present invention, the air cleaning member includes an air compressor connected to the filtered concentrated water transfer line through a compressed air supply line to generate compressed air, and a compression tank connected to the compressed air supply line to compress air; and an air filter regulator provided in the compressed air supply line to control the high pressure while removing foreign substances in the compressed air transferred to the UF filter unit.

As described above, the apparatus for removing microplastics from concentrated salt water for salt use according to the present invention, unlike the prior art, concentrates the foreign substances and microplastics contained in the seawater flowing into the salt farm and seawater to produce sea salt, and transfers the concentrated salt water to the salt farm crystallization area. It has the effect of preventing contamination of sea salt by removing foreign substances generated in the process.

In addition, the apparatus for removing microplastics from concentrated brine for salt use according to the present invention can improve the washing effect by washing the UF filter unit contaminated in the process of filtering the concentrated water using hot water and air.

1 is a perspective view illustrating an apparatus for removing microplastics in concentrated brine for salt use according to an embodiment of the present invention.
2 is a side view of FIG. 1 for explaining an apparatus for removing microplastics in concentrated brine for salt according to an embodiment of the present invention.
3 is a plan view of FIG. 1 for explaining an apparatus for removing microplastics in concentrated brine for salt according to an embodiment of the present invention.
4 is an enlarged perspective view of a main part for explaining a filter fixing unit according to an embodiment of the present invention.
5 is an enlarged perspective view of the main part for explaining the washing water filtration filter of the filter washing unit according to an embodiment of the present invention.
6 is a schematic diagram for explaining an apparatus for removing microplastics from concentrated brine for salt according to an embodiment of the present invention.

Hereinafter, preferred embodiments of an apparatus for removing microplastics from concentrated brine for salt according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a perspective view for explaining an apparatus for removing microplastics from concentrated brine for salt use according to an embodiment of the present invention, and FIG. 1 is a side view, and FIG. 3 is a plan view of FIG. 1 for explaining an apparatus for removing microplastics in concentrated brine for salt according to an embodiment of the present invention.

In addition, Figure 4 is an enlarged perspective view of the main part for explaining the filter fixing unit according to an embodiment of the present invention, Figure 5 is an enlarged perspective view of the main part for explaining the washing water filtration filter of the filter washing unit according to an embodiment of the present invention, 6 is a schematic diagram for explaining an apparatus for removing microplastics from concentrated brine for salt according to an embodiment of the present invention.

1 to 6 , the apparatus 100 for removing concentrated brine microplastics for salt use according to an aspect of the present invention is provided in a salt farm for producing sea salt, and the concentrated water concentrated by evaporating seawater is converted into salt farm crystals. Before supply, the concentrated water is filtered to remove foreign substances, especially microplastics, contained in the concentrated water. This makes it possible to completely remove microplastics that may be included in sea salt, making it possible to produce safe and hygienic sea salt.

In addition, the concentrated brine microplastic removal device 100 for salt only according to this embodiment periodically washes the filter, which is clogged in the process of filtering the concentrated water, using hot water and compressed air, thereby reducing the filtration performance of the concentrated water. can be prevented from becoming

To this end, the apparatus 100 for removing concentrated brine microplastics for salt use according to the present embodiment is installed in the frame 110 installed in the salt field and the frame 110 to transport and filter the concentrated water for filtration to remove foreign substances and microplastics. It includes a pre-filter unit 120 , a fine filter unit 130 , and a filter unit 140 , and a filter washing unit 150 for washing the filter unit 140 , which are arranged to sequentially remove .

The frame 110 is formed in a rectangular frame shape by a vertical pipe and a horizontal pipe, and includes a control panel for operation and control.

In addition, in the frame 110, the pre-filter unit 120 and the fine filter unit 130 are coupled to the bottom, the uf filter unit 140 is coupled to the inner side through the filter fixing unit 111, and the filter washing unit ( An auxiliary frame 110 for installing 150 is provided.

The filter fixing unit 111 includes a seating support member 113 coupled to the frame 110 , and a fixing bracket 115 for fixing the uf filter unit 140 mounted to the seating support member 113 . At this time, the seating support member 113 has a semi-circular seating groove 113a formed in the central portion, and coupling pieces 113b through which the fixing brackets 115 are fixed to both ends are formed.

The fixing bracket 115 is formed in a "U" shape so as to surround the uf filter unit 140 and is fixed to the frame 110 as the nuts are fastened with both ends passing through the coupling piece 113b. The part 140 is fixed.

The pre-filter unit 120 is coupled to the frame 110, and transports the concentrated water of the salt farm to filter and remove foreign substances included in the concentrated water, for example, fish and waste, large and small contaminants, and organic materials such as plankton. The pre-filter unit 120 is connected to the fine filter unit 130 to transfer the filtered primary filtered concentrated water to the fine filter unit 130 .

In addition, the pre-filter unit 120 includes a water pump 121 for transferring concentrated water from the salt farm, a sand filter 123 connected to the water pump 121 to filter the concentrated water to remove relatively large foreign substances, and a sand filter. A bag filter 125 connected to the sand filter 123 is provided to filter the concentrated water that has passed through 123 . At this time, the pre-filter unit 120 supplies the concentrated water for filtration at 2.0 m 3 /hr using the water pump 121 , and removes relatively small foreign substances from the bag filter 125 .

The bag filter 125 is connected to the fine filter unit 130 so that the concentrated water supplied by the water pump 121 is supplied to the fine filter unit 130 .

The fine filter unit 130 removes algae, oil, fine organic matter, fine contaminants, etc. included in the primary filtered concentrated water that is not filtered by the bag filter 125 . The fine filter unit 130 is connected to the FA filter unit 140 by the filtration concentrated water transfer line 131, and the second filtered concentrated water filtered through the filtered concentrated water transfer line 131 is transferred to the EF filter unit ( 140) is transferred. At this time, the filtered concentrated water transfer line 131 prevents the reverse flow of the secondary filtered concentrated water, as well as prevents the washing water and compressed air supplied from the filter washing unit 150 from being supplied to the fine filter unit 130 for washing. A check valve may be provided to do so.

The filter unit 140 is connected to the filtration condensate transfer line 131 so that the secondary filtration condensate filtered by the fine filter unit 130 flows in, and the secondary filtration condensate is supplied, and is included in the secondary filtration condensate. It filters out microplastics. At this time, purified concentrated water from which microplastics are removed by being filtered by the uf filter unit 140 is supplied to the salt field crystallizer for post-treatment.

Two of these uf filter units 140 are installed to be spaced apart from the frame 110 by the filter fixing unit 111 to divide and filter the secondary filtered concentrated water transferred through the filtered concentrated water transfer line 131 . do.

Specifically, the UF filter unit 140 includes a first UF filter member 140a and a second UF filter member 140b, and an inlet line 141 that branches from the filtered concentrated water transfer line 131 at the lower end. These are provided, respectively, and a discharge line 143 connected to the purified water drain line 142 is provided at the upper end, respectively.

In addition, in the UF filter unit 140, a washing line 145 is connected to the side surfaces of the first UF filter member 140a and the second UF filter member 140b, respectively, and the first UF filter member 140a and the second UF filter member 140a are connected to each other. A purified water drain line 142 for discharging purified water to the salt field crystallizer is connected to the discharge line 143 of the filter member 140b. At this time, the purified water drain line 142 is provided with a purified water opening/closing valve 142a for selectively opening and closing the purified water when the purified water is discharged and the UF filter unit 140 is washed.

The first uf filter member 140a and the second uf filter member 140b are provided with an inlet opening/closing valve 141a for opening and closing in each inlet line 141, respectively, and discharge opening/closing in each outlet line 143. A valve 143a is provided, respectively. In addition, each of the first FA filter member 140a and the second EF filter member 140b is provided with a washing drain opening/closing valve 145a for opening and closing the washing line 145 , respectively.

Here, the purified water opening/closing valve 142a, the inlet opening/closing valve 141a, the discharge opening/closing valve 143a, and the washing drain opening/closing valve 145a are used for filtration and drainage of concentrated water or washing water and compression according to the washing of the uf filter unit 140. It opens and closes selectively depending on the supply of air.

The filter washing unit 150 is connected to the filtered concentrated water transfer line 131 and the purified water drain line 142, respectively, and selectively supplies water and compressed air for washing to the uf filter unit 140 to the uf filter unit ( 140) will be cleaned.

The filter washing unit 150 supplies washing water in a direction opposite to the washing direction of the uf filter unit 140 or supplies compressed air in the washing direction of the uf filter unit 140 to clean the uf filter unit 140 . will be washed And the washing water or compressed air supplied while washing the uf filter unit 140 is discharged through the washing line (145).

To this end, the filter washing unit 150 is connected to the uf filter unit 140 through the purified water drain line 142 to supply washing water in the opposite direction to the filtration direction of the uf filter unit 140. A drain washing member 151 and , to supply washing water to the air washing member 153 and the drain washing member 151 connected to the uf filter unit 140 through the filtered concentrated water transfer line 131 to supply compressed air in the filtration direction of the concentrated water It includes a washing water supply member 155 for.

The drain washing member 151 heats the washing water to improve the washing effect when backwashing the uf filter unit 140 and transfers it to the uf filter unit 140 . Then, it is possible to effectively dissolve and remove foreign substances such as salt remaining in the uf filter unit 140 .

The drain washing member 151 is provided in the auxiliary frame 110 and is provided in a washing water storage tank 151b connected to the purified water drain line 142 through a washing water supply line 151a, and a washing water storage tank 151b. A heating member 151c for heating the washing water and a circulation pump 151d installed on the washing water supply line 151a to transfer the washing water at high pressure are provided.

The washing water storage tank 151b is connected to the washing water supply member 155 to selectively supply and store washing water for washing. At this time, the washing water storage tank 151b is heated to 40-50° C. by the heating member 151c.

The circulation pump 151d is provided in the auxiliary frame 110, and the washing water supply line 151a is provided with a washing water supply opening/closing valve 151e for opening and closing.

The air washing member 153 supplies compressed air in the filtration direction of the uf filter unit 140 through the filtration and concentrated water transfer line 131 to completely remove foreign substances remaining in the uf filter unit 140 after washing the washing water. do.

The air cleaning member 153 is connected to an air compressor 153b for generating compressed air by connecting the compressed air supply line 153a to the filtered concentrated water transfer line 131, and the compressed air supply line 153a. It includes a compression tank (153c) for compressing air, and an air filter regulator (153d) provided in the compressed air supply line (153a) to control high pressure while removing foreign substances in the compressed air transferred to the uf filter unit (140). . At this time, the compressed air supply line 153a between the compression tank 153c and the air filter regulator 153d is provided with an air opening/closing valve 153e for opening and closing.

Since the air cleaning member 153 removes foreign substances contained in the compressed air for cleaning in the air filter regulator 153d, it is possible to prevent the uf filter unit 140 from being contaminated during cleaning.

The washing water supply member 155 is provided in the frame 110 or the auxiliary frame 110 to selectively supply the washing water supplied to the washing water storage tank 151b by filtering. At this time, the washing water supply member 155 is not provided on the frame 110 or the auxiliary frame 110, but is separately provided and may be moved and installed as needed.

The wash water supply member 155 includes a supplemental pump 155b connected to the wash water storage tank 151b through the wash water supplementation line 155a, and a wash water supplementation line 155a to filter the wash water transferred by the supplemental pump 155b. ) is provided with a washing water filtration filter (155c) provided in the.

The washing water filtration filter 155c has a head part 155c' coupled to the fixing plate 117 provided on the frame 110, and detachable from the head part 155c', and a filter paper 155c'' for filtration is built-in. and a housing 155c'''. Since the washing water filter filter 155c has the housing 155c''' detached from the head part 155c', the filter paper 155c'' can be easily replaced.

An operation of the microplastic removal device for salt-only concentrated brine according to an embodiment of the present invention configured as described above will be described.

First, when the concentrated water is filtered and supplied to the salt field crystallizer, the air opening/closing valve 153e, the washing water supply opening/closing valve 151e, and the washing drainage opening/closing valve 145a are closed, and the inlet opening/closing valve 141a and the discharge opening/closing valve 143a are closed. In the open state, the water pump 121 of the pre-filter unit 120 is operated.

Then, the concentrated water transferred by the water pump 121 is filtered through the sand filter 123 and the bag filter 125 to remove large and small foreign substances, and the first filtration and concentration passing through the bag filter 125 . As the water passes through the fine filter unit 130, the fine foreign matter is further removed.

In addition, the secondary filtered concentrated water filtered by the fine filter unit 130 is supplied to the uf filter unit 140 through the filtered concentrated water transfer line 131 to remove the remaining microplastics. Thereafter, the purified water from which microplastics are removed while passing through the UF filter unit 140 is supplied to the salt farm crystallizer through the purified water drainage line 142 .

On the other hand, when washing the uf filter unit 140, the air opening/closing valve 153e and the inlet opening/closing valve 141a are closed, and the washing water supply opening/closing valve 151e and the washing drain opening/closing valve 145a are opened. By operating the pump (151d), the washing water is supplied to the uf filter unit (140). Then, the washing water flows in the backwashing direction of the filter unit 140 through the discharge opening/closing valve 143a, and the filter unit 140 is washed. And the washing water that backwashes the uf filter unit 140 is drained through the washing line 145 .

At this time, since the washing water stored in the washing water storage tank 151b is heated by the heating member 151c, the washing effect of the uf filter unit 140 is further improved.

After that, when the washing of the uf filter unit 140 by the washing water is completed, the discharge opening/closing valve 143a is closed, and the air compressor 153b is closed while the washing drainage opening/closing valve 145a and air opening/closing valve 153e are opened When it operates, the compressed air is supplied to the filtering direction of the filter unit 140 through the compressed air supply line (153a) to perform the secondary cleaning of the filter unit 140 .

As described above, the apparatus 100 for removing concentrated salt water microplastics for salt use according to the present invention concentrates foreign substances and microplastics contained in seawater flowing into the salt field to produce sea salt, and seawater generated during the transfer to the salt field crystallization area. By removing foreign substances, it is possible to prevent contamination that occurs during the production of sea salt.

In addition, the apparatus 100 for removing concentrated brine microplastics for salt use according to the present invention can improve the washing effect by washing the uf filter unit 140 contaminated in the process of filtering the concentrated water using hot water and air.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it is understood that various modifications and equivalent other embodiments are possible by those of ordinary skill in the art. will understand

Accordingly, the true technical protection scope of the present invention should be defined by the claims.

100: Concentrated salt water microplastic removal device for salt
110: frame 111: filter fixing part
113: seating support member 115: fixing bracket
120: fine filter unit 131: filtered concentrated water transfer line
140: uf filter unit 140a: first uf filter member
140b: second uf filter member 141: inlet line
142: purified water drainage line 143: discharge line
145: washing line 150: filter washing unit
151: drain cleaning member 153: air cleaning member
155: washing water supply member

Claims (6)

frame;
a pre-filter unit provided in the frame to transport the concentrated water of the salt farm to remove foreign substances contained in the concentrated water, and to which the concentrated water is supplied through a water pump;
a fine filter unit connected to the pre-filter unit so that the primary filtered concentrated water passing through the pre-filter unit flows in, and removing fine foreign substances from the primary filtered concentrated water;
It is connected to the fine filter unit so that the secondary filtered concentrated water passing through the fine filter unit flows in, filters the microplastics included in the secondary filtered concentrated water, and is filtered through a purified water drain line having a purified water opening/closing valve. a uf filter unit for discharging water to the salt field crystallizer; and
a filter washing unit connected to the uf filter unit through the purified water drain line and the filtered concentrated water transfer line to selectively supply water and compressed air to the uf filter unit to wash the uf filter unit;
Concentrated salt water microplastic removal device for salt, characterized in that it comprises a.
The method of claim 1,
The pre-filter unit may include: a sand filter connected to the water pump to remove foreign substances from the concentrated water; and
a bag filter connecting the sand filter and the fine filter unit to filter the concentrated water filtered by the sand filter;
Concentrated salt water microplastic removal device for salt, characterized in that it comprises a.
3. The method of claim 2,
The fine filter unit is connected to the bag filter, and the primary filtered concentrated water filtered by the bag filter is introduced and filtered, and the concentrated brine for salt is connected to the UF filter unit through the filtered concentrated water transfer line. Microplastic removal device.
4. The method of claim 3,
The filter washing unit may include: a drain washing member connected to the UEF filter unit to supply washing water in a direction opposite to the filtering direction of the UEF filter unit, and selectively heating the washing water to wash the UEF filter unit; and
an air cleaning member for supplying compressed air in the filtration direction of the DF filter unit through the filtered concentrated water transfer line to remove foreign substances from the EF filter unit;
Concentrated salt water microplastic removal device for salt, characterized in that it comprises a.
5. The method of claim 4,
The drain washing member includes: a washing water storage tank provided in the frame to be connected to the purified water drain line through a washing water supply line, and into which washing water is introduced and stored;
a heating member provided in the washing water storage tank to heat the washing water; and
a circulation pump installed in the washing water supply line to transfer the washing water from the washing water storage tank to the uf filter unit;
Concentrated salt water microplastic removal device for salt, characterized in that it comprises a.
5. The method of claim 4,
The filter washing unit may further include a washing water supply member provided in the frame to selectively supply the washing water to the drain washing member, and filtering the washing water through a washing water filtration filter;
The air cleaning member may include: an air compressor connected to the filtered concentrated water transfer line through a compressed air supply line to generate compressed air;
a compression tank connected to the compressed air supply line to compress air; and
an air filter regulator provided in the compressed air supply line to control high pressure while removing foreign substances in the compressed air transferred to the UF filter unit;
Concentrated salt water microplastic removal device for salt, characterized in that it comprises a.

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