KR20010088963A - Nothing power seawater convert equipment of freshwater and method of make freshwater - Google Patents

Abstract

PURPOSE: A non-powered sea water desalination equipment is provided, which can conduct desalination of sea water by a non-powered equipment and so can supply desalinated water to even a remote island or hinterland that is far off land. This desalination equipment can be used as a portable equipment that is moveable according to water quality and water depth and can be applied to ship. CONSTITUTION: The system comprises the followings: (i) a vertical cylindrical desalination equipment (10) that is installed at the bottom of the sea and has a desalinated water storage tank (150) at the center; (ii) a purification part (100) that has an outermost pre-filter (120) for primarily filtering sea water, a raw water storage tank (130) for receiving the primarily filtered water, a reverse osmosis filter (140) and the desalinated water storage tank (150) for purifying salt in sea water, wherein all of those are covered by a case (110); (ii) an atmospheric pressure supplying pipe (300) for supplying atmospheric pressure to the inside of the desalination equipment to ease the pumping of desalinated water to outside; and (iii) a desalinated water recovery line (200) for discharging desalinated water.

Description

Non-powered seawater desalination system and seawater desalination method {NOTHING POWER SEAWATER CONVERT EQUIPMENT OF FRESHWATER AND METHOD OF MAKE FRESHWATER}

The present invention relates to a desalination apparatus for purifying seawater into freshwater, and more particularly, is provided in a sea with high water pressure, and the seawater is supplied by an atmospheric pressure supply pipe to supply atmospheric pressure from the ground to generate reverse osmosis without power. Purifying unit made of a predetermined case to remove the foreign matter such as seaweeds, shellfish and the like in the sea with a pre-filter provided in the outside of the purification unit to collect only the sea water in the raw water storage tank, and passes the raw water through the reverse osmosis filter It relates to a desalination device and a desalination method comprising a desalination pipe configured to drain fresh water purified in the freshwater storage tank by the pressure difference to the ground by a well-known conventional pump or the like.

The present invention is a domestic priority claim application for patent application No. 2001-43017 filed July 18, 2001.

In general, various devices are known for desalination of seawater.

For example, a seawater desalination plant in which seawater is treated with drinking water, that is, fresh water, by an apparatus as shown in FIG. 1, the contents of which are as follows.

As shown in the drawing, the seawater drawn up by the low pressure pump LP and passed through the primary treatment tank PT removes foreign substances such as seaweed and passes the reverse osmosis filter MB by the high pressure pump HP. While the salt is removed by the reverse osmosis method acting at high pressure and low pressure, and to collect the purified fresh water in the fresh water tank (WT).

In addition, although not shown, the driving force of the high pressure pump (HP) is to make a general seawater desalination device to eliminate the waste of energy through the energy recovery turbine (RT).

However, the treatment apparatus is described by illustrating the use of the Middle East or the United States, and because it is a large-scale facility unlike the briefly illustrated, there is a problem in that it is not yet universalized by being operated only in some regions in Korea.

In addition, there is a problem in that huge budget and power consumption to operate the device.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is to enable a fresh water supply by pumping with a small power, or a known manual pump in remote islands far away from the land. .

In addition, another object of the present invention is to enable the production of fresh water with little power or no power by manual pump as described above to reduce the production cost in producing fresh water.

In addition, another object of the present invention is to enable the production of fresh water with a small power, to move according to the water quality or water pressure to move and to enable the production of fresh water so that it can be applied to ships that operate the sea.

1 is a block diagram illustrating a conventional seawater desalination apparatus,

2 is a cross-sectional view for explaining a general reverse osmosis action,

3 and 4 is a first embodiment, Figure 3 is a perspective view showing in detail the configuration and operation of the desalination apparatus of the present invention,

Figure 4 is a cross-sectional view of the line "A"-"A" shown in Figure 2 to explain in detail the configuration of the case to fix the filter provided for each desalination in the desalination apparatus of the present invention,

5 is a perspective view showing an embodiment in which a wash pipe is applied to remove foreign matter adhering to the outside of the purification unit of the present invention desalination apparatus by blowing high pressure air from the ground,

Figure 6 is a cross-sectional view showing a third embodiment to obtain fresh water by providing at least one known membrane filter in the desalination apparatus of the present invention,

7 is a cross-sectional view showing in detail the configuration of the composite cartridge filter to extend the life of the membrane filter,

8 is a perspective view showing the appearance of the desalination apparatus according to the third embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10; desalination apparatus 100; tablets

110; case 120; pre-filter

130; raw water storage tank 140; reverse osmosis filter

150; freshwater reservoir 200; freshwater collection pipe

300; atmospheric pressure supply pipe 400; wash pipe

The present invention relates to a desalination apparatus provided on the sea floor to desalination, cleanup, and concentration of the solute without a phase change by depressurizing the liquid to provide fresh water treatment.

The desalination apparatus is provided on the side of a predetermined case in which the upper and lower portions are sealed, and includes a prefilter for filtering the seawater first, a raw water storage tank for collecting the raw water first filtered from the prefilter, and the raw water storage tank. A reverse osmosis filter for purifying the salt of purified raw water to collect the fresh water, and a purification unit provided with a fresh water storage tank to collect purified fresh water provided inside the reverse osmosis filter;

A fresh water recovery pipe penetrating the upper portion of the case to discharge fresh water collected in the fresh water storage tank;

It is provided on one side of the fresh water collection pipe to supply a low pressure in the atmosphere to facilitate the desalination of sea water by the high pressure of the seabed, and comprises an atmospheric pressure supply pipe for discharging fresh water to the ground through the fresh water collection pipe.

In addition, the present invention is provided with a refining unit on the seabed where high water pressure is generated, the outer side of the refining unit is a high water pressure of the seabed acts inside the low pressure acts by the atmospheric pressure supply pipe to move the liquid from high pressure to low pressure The present invention relates to a seawater desalination method of desalination of seawater by moving seawater into the refining unit by reverse osmosis.

(First embodiment)

Figure 2 is a cross-sectional view for explaining a general reverse osmosis action, Figures 3 and 4 is a first embodiment, Figure 3 is a perspective view showing in detail the configuration and operation of the desalination device of the present invention, Figure 4 is a cross-sectional view taken along line “A”-“A” of FIG. 2 to explain in detail the configuration of a case for fixing a filter provided for each desalination in the present desalination apparatus.

As shown in Figure 2, the conventional reverse osmosis (Reverse Osmosis) is a mimic application of the most important phenomenon of the organism, which is a water mixed with various impurities (hereinafter referred to as "contaminated water"). When pressure (HP) is applied to (DW) to pass through the membrane (MB), which is a semipermeable membrane, impurities are filtered and pure water, dissolved oxygen, and trace minerals are passed through to make purified water (CW).

In addition, the membrane (MB) used as a reverse osmosis filter has a very small hole formed on the surface of only 0.0001μ, and the contaminated water (DW) hits the membrane (MB) at a high pressure (HP). In this case, only pure H2O particles pass through these small pores, and the larger particles do not pass through the membrane (MB).

As described above, when there is a solution having a different concentration with a semi-permeable membrane, that is, the membrane MB, the osmotic phenomenon that flows into a low concentration solution into a dark solution is used to reverse the pressure. When added, the water of the concentrated solution flows toward the water of the low concentration solution, and the membrane MB can filter out radioactive contaminants.

3 and 4 is a perspective view showing in detail the configuration of the desalination apparatus 10 of the present invention using the reverse osmosis method described above and provided in the seabed, that is, the sea, deep water depth Desalination of seawater using the water pressure of.

That is, if a pressure of 1 atm (750 mmhq = 1 atm) acts for every 10 M of water depth, in the case of a depth of 50 M, a pressure of 5 atm acts on the refining unit 100, which will be described later. The way of operation is possible.

Desalination apparatus 10 of the present invention to be described later is to let the sea water flow into the fresh water storage tank 150 formed in the case 110 by the pressure difference generated by the sea water pressure and atmospheric pressure supply pipe 300, By the pressure difference will be able to supply fresh water to the ground through the fresh water collection pipe (200).

As shown, the desalination device 10 is a tablet consisting of a pre-filter 120, a reverse osmosis filter 140, and a case 110 to support the pre-filter 120, reverse osmosis filter 140. The air supply unit 300 and the atmospheric pressure supply pipe 300 for supplying the atmospheric pressure to purify the seawater by the pressure difference with the subsea water pressure to the upper portion of the case 110, and the atmospheric pressure supply pipe 300 is provided on one side It is roughly divided into the fresh water collection pipe 200 to pump the fresh water to the ground.

In addition, the case 110 is provided with upper and lower corners 111 and 112 provided in a circular shape on the upper and lower sides, and the above-described prefilter 120 inside the upper and lower corners 111 and 112. ) And first, second, and third filter support plates 113, 114, and 115 are provided to support the reverse osmosis filter 140.

The first, second, and third filter support plates 113, 114, and 115 are provided with three pieces so that the outer diameter of the first, second, and third filter support plates 113, 114, and 115 increases radially from the center of the upper ribbon 111. It is the third filter support plate 115 that the outer diameter of the outside from 113 becomes large.

In addition, the upper and lower corners 111 of the filter support plates 113, 114 and 115 are equipped with a fastening flange 113a made of an angle of a general "A" shape. 112 and bolts and nuts that are the usual fastening means.

The reverse osmosis filter 140 is provided inside the first and second filter support plates 113 and 114, and the prefilter 120 is provided outside the third filter support plate 115.

The first, second, and third filter support plates 113, 114, and 115 are conventional perforated plates, and the support of the prefilter 120 and the reverse osmosis filter 140 is firm, but the flow of seawater is smooth. To do that.

In addition, a mesh network 116 is provided on the outer circumferential surface of the prefilter 120 to allow seawater to pass and to filter foreign substances, that is, to filter seaweeds, but the prefilter 120 is damaged by water pressure or fish tearing. To prevent them.

In addition, the upper and lower upper and lower periphery of the upper and lower side of the mesh net 116, the lower flanges 111a (112a) is provided on the bottom is provided with the mesh net 116 and free The sealing property of the filter 120 was aimed at.

The raw water storage tank 130 is formed between the pre-filter 120 and the reverse osmosis filter 140 provided as described above to remove foreign substances such as seaweed, and to collect only the raw water made of sea water, the raw water storage tank 130. The collected sea water passes through the reverse osmosis filter 140 provided inside, and the fresh water with purified salt is collected in the fresh water storage tank 150 of the case 110.

Fresh water collected in the fresh water storage tank 150 as described above is to send the fresh water purified to the ground through the fresh water collection pipe 200 provided on one side by the pressure difference between the atmospheric pressure supply pipe 300 and the water pressure.

In addition, although not shown, if the freshwater return pipe 200 and a conventional conventional pump (not shown), the fresh water can be pumped to the ground without power.

(Second embodiment)

5 is a second embodiment of the seawater desalination device of the present invention, by blowing high pressure air from the ground, showing an embodiment in which the wash pipe is applied to remove foreign matter adhering to the outside of the purification portion of the present invention desalination device Perspective view.

As shown in the present embodiment, when the seawater passes through the prefilter 120 due to the pressure difference between the seabed and the ground as described above in the first embodiment, foreign matters such as seaweeds in the seawater are transferred to the mesh network 116. It is to prevent the seawater from flowing smoothly due to adhesion to the surface of).

That is, by having at least one wash pipe 400 (Wash Pipe) inside the raw water storage tank 130 by injecting high-pressure air from the ground on a regular basis or as required by the user, the mesh network 116 adheres to Kim, seaweed. It is to remove seaweed such as kelp.

A plurality of air holes 410 are formed on the outer circumferential surface of the wash pipe 400 so as to evenly clean the upper and lower portions of the prefilter 120.

In addition, although shown that only one is provided in the raw water storage tank 130, it is provided with a plurality of wash pipes 400 in the circumference to clean the surface of the desalination device 10 of the present invention, the tablet (淨 濟) You can maximize efficiency.

In addition, as described above, the desalination apparatus 10 of the present invention, that is, the purification unit 100 and the case 110 may be easily modified and implemented as much as the manufacturing technology of the art, in addition to the illustrated circle. For example, a method of manufacturing the case 110 in a polygon or more square.

(Third Embodiment)

FIG. 6 is a cross-sectional view showing another embodiment of the present invention for desalination of the seawater desalination device, and including at least one known membrane filter to obtain fresh water, and FIG. 7 prolongs the life of the membrane filter. 8 is a perspective view showing the appearance of a desalination device according to another embodiment of the present invention. (The same configuration as that of the first embodiment will be described with the same name and reference numeral.)

6 shows another embodiment of the present invention desalination device 10, the configuration of which is as follows.

As shown in the drawing, the desalination apparatus 10 has upper and lower sealed cases 110 and a large number of perforations 110a formed on the upper outer circumferential surface of the case 110, and the perforated 110a of the desalination apparatus 10 is formed. The pre-filter 120 is provided to the outside to primarily filter seaweeds, etc. contained in the incoming seawater, the outer periphery of the pre-filter 120 is provided with the same mesh network 116 as the first embodiment described above The surface of the prefilter 120 is torn by fish or the like, thereby preventing damage.

In addition, as described above, the seawater introduced through the pre-filter 120 is stored in the raw water storage tank 130 before the fresh water by the reverse osmosis of the desalination device 10 of the present invention, the raw water storage tank 130 Upper and lower sides of the upper and lower separators 131 and 132 are respectively provided.

The phase separation plate 131 is provided with a plurality of cartridge type reverse osmosis filter 140a of the present invention to supply the seawater stored in the raw water storage tank 130 through an atmospheric pressure supply pipe 300 to be described later by the high water pressure of the seabed The fluid moves in the low pressure direction to the atmospheric pressure, and the seawater is purified through the cartridge type reverse osmosis filter 140a to store fresh water in the primary freshwater storage tank 151 provided thereon.

That is, the primary fresh water storage tank 151 is provided with an atmospheric pressure supply pipe 300, when the high pressure seawater collected in the raw water storage tank 130 moves in a low pressure direction by the atmospheric pressure supply pipe 300, Through the cartridge type reverse osmosis filter 140a is desalted. (The configuration of the cartridge type reverse osmosis filter 140a will be described in detail with reference to FIG. 7).

Purified fresh water as described above is flowed downward by the drain pipe 160 provided in the center as shown in the cross section in the primary fresh water storage tank 151 and stored in the secondary fresh water storage tank 152, the secondary It is to facilitate the pumping of fresh water to the ground through the fresh water collection pipe 200 provided in the fresh water storage tank (152).

In addition, the upper side of the secondary fresh water storage tank 152 is provided with a lower separating plate 132, the lower separating plate 132 is mounted on the inside of the case 110 in the shape of "C" in cross section raw water Although not shown to prevent the mixing of fresh water and fresh water, and is not shown to prevent the mixing between the inner wall (ISW) of the case 110 and the mounting flange 132a of the lower separating plate 132 (Packing) ) Is provided.

In addition, the packing is also provided at the coupling portion of the primary freshwater storage tank 151 to which the above-described phase separation plate 131 and the upper cap UC combine to prevent mixing of fresh water and seawater.

On the other hand, the inside of the raw water storage tank 130 is provided with a wash pipe 400 to remove seaweeds adhered to the outer surface of the pre-filter 120 and the cartridge type reverse osmosis filter (140a) to be described later, the wash pipe Preferably, 400 is provided as many as possible. The reason for this is to make the sweep evenly formed on the outer circumferential surface of the desalination device 10 of the present invention formed in a columnar shape.

On the other hand, Figure 7 is shown to explain the configuration and reverse osmosis action of the cartridge type reverse osmosis filter 140a of the present invention, as shown, the cartridge type reverse osmosis filter 140a is known Membrane filter (MF) of the inside is provided with a flange 141 to be detachable to the outside and consists of a cylindrical pre-filter 120, the upper side is opened to the lower side of the flange 141.

The flange 141 is formed by injection molding a conventional synthetic resin, and is formed in a disk shape so that the hole 142 is formed to penetrate the purified water outlet MF1a provided at the center of the membrane, and the outer periphery of the hole 142 is A screw portion 142a is formed to allow screw mounting on the phase separation plate 131.

After the screw portion 142a is inserted into the phase separation plate 131 as described with reference to FIG. 6, the screw 142a is fixed with a general nut N so that the prefilter 120 can be replaced regularly.

For this reason, since the price of the membrane filter MF provided inside the prefilter 120 is high, if it is frequently replaced, the membrane filter MF is prevented from being excessively added. ) Is also in direct contact with the sea water and to prevent the fine particle size seaweeds to adhere to the outside.

That is, after preliminarily filtering a plurality of impurities by the pre-filter 120 provided in the outside, purely seawater passes through the membrane filter MF, thereby extending the life of the expensive membrane filter MF. At the same time to maintain a high filtration efficiency.

In addition, the lower side of the flange 141 is formed with a guide 141a in a circular shape so that the upper side of the prefilter 120 of the present invention is coupled, and the guide 141a and the same as the desalination device 10 described above. The above-mentioned well-known packing is provided between the prefilter 120 and the ring flange RF of the upper end of the prefilter 120 to prevent the inflow of fine foreign substances existing in the seawater. To improve the desalination efficiency, and by regularly replacing the pre-filter 120, the membrane filter (MF) provided therein can maintain a clean state for a long time.

The prefilter 120 may be manufactured of the same material as the prefilter 120 provided on the surface of the desalination apparatus 10 as described above, but is provided outside the desalination apparatus 10 of the present invention as described above. The roughness is higher than that of the prefilter 120, and fine filtration of foreign matters is possible.

As described above, the seawater in which the filtration of fine foreign matters is completed by the pre-filter 120 is introduced into the surface of the membrane filter MF, which is a representative reverse osmosis filter, and desalted, and is described above through the blowout hole MF1a formed in the upper portion. As described above, the primary freshwater storage tank 151 is discharged, and as described above, the secondary freshwater storage tank 152 is collected by riding the drain pipe 160 provided at the center of the primary freshwater storage tank 151.

The fresh water collected in the secondary freshwater storage tank 152 is pumped to the ground through the freshwater collection pipe 200. (The filtration action of the cartridge type reverse osmosis filter 140a is omitted in the first embodiment. .)

8 illustrates the external appearance of the desalination apparatus 10 as described above, and shows that the perforated plate provided in the prefilter 120 has hexagonal perforations PH formed therein. As the manufacturing technology of the art, it is possible to form perforations by deforming in various shapes such as square, pentagon or circular.

As described above, if the desalination apparatus 10 of the present invention is manufactured in various sizes such as small or large, and provided on the sea floor, it is possible to easily pump fresh water from the ground to solve drinking water problems, and anchored in the sea for a long time. Even in the case of a ship to use the desalination apparatus 10 of the present invention described above can be supplied drinking water without a large power.

The present invention is not limited to the above-described specific preferred embodiment, and can be easily modified by anyone having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are intended to fall within the scope of the claims.

As described above, according to the present invention, there is an effect of providing a device for supplying fresh water to remote islands and the like far away from land without power.

In addition, as described above, it is possible to produce fresh water with no power, thereby reducing the production cost of producing fresh water, thereby obtaining purified fresh water.

In addition, as described above, it is possible to produce fresh water in a non-powered manner, it is possible to move according to the water quality or water pressure to move and to be able to be applied to a ship that operates the sea to enable the production of fresh water.

Claims (7)

In the desalination apparatus provided in the sea floor to desalination, cleansing, and concentration of the solute without a phase change to desalination the seawater, The desalination apparatus is provided in an outer side of a predetermined case in which an upper part and a lower part are sealed, and a pre-filter for filtering the sea water first, a raw water storage tank for collecting raw water filtered primarily from the pre-filter, and the raw water storage tank. A reverse osmosis filter for purifying salts of raw water provided to treat fresh water, and a purification unit provided with a fresh water storage tank to collect purified fresh water provided inside the reverse osmosis filter; A fresh water recovery pipe penetrating the upper portion of the case to discharge fresh water collected in the fresh water storage tank; It is provided on one side of the fresh water collection pipe to supply a low pressure in the air to facilitate the desalination of sea water by the high pressure of the seabed, and includes an atmospheric pressure supply pipe to facilitate the pumping of fresh water to the ground through the fresh water collection pipe. Non-powered seawater desalination device, characterized in that configured. The method of claim 1, The desalination device is a non-powered seawater desalination device, characterized in that further comprises a wash pipe to remove foreign matter adhering to the pre-filter by blowing high pressure air from the ground inside the raw water storage tank. The method of claim 1, The case is provided on both sides of the reverse osmosis filter and the pre-filter inside the upper and lower corners, and the upper and lower ends are provided with fastening flanges for easy bolting with the upper and lower corners and are radial from the center. The first, second, and third filter support plate is gradually increased in outer diameter, and a non-powered seawater desalination device characterized in that it further comprises a mesh net provided on the outside of the pre-filter. The method of claim 3, wherein The first, second, third filter support plate is a non-powered seawater desalination device, characterized in that the support of the pre-filter and reverse osmosis filter is firm, but the flow of sea water is a smooth perforated plate. The method of claim 1, The refining unit is a pre-filter provided on the upper side of the seawater to remove foreign matters such as seaweed gathers to at least one inside of the raw water storage tank provided with upper and lower separators to prevent mixing of seawater and fresh water to desalize seawater. A primary freshwater storage tank having a cartridge type reverse osmosis filter, an atmospheric pressure supply pipe for forming a low pressure so that the fresh water from which salt is removed by the cartridge type reverse osmosis filter is collected, and a drain provided at the center of the primary fresh water storage tank Non-powered seawater desalination apparatus comprising a second freshwater storage tank equipped with a freshwater collection pipe to receive fresh water from the primary freshwater storage tank by a pipe and pump it to the ground. The method of claim 5, The cartridge type reverse osmosis filter further includes a flange having a known membrane filter therein, a flange allowing detachment to an upper side of the membrane filter, and a cylindrical prefilter coupled to an upper side opened below the flange. Non-powered seawater desalination device, characterized in that configured. A desalination device is provided on the sea floor where high water pressure is generated, and the outside of the desalination device has a high water pressure on the sea floor, and a low arm force is applied by the atmospheric pressure supply pipe, so that the liquid moves from high pressure to low pressure. Seawater desalination method characterized in that the desalination by moving the seawater into the purification unit of the desalination apparatus by the method.