CN107866102B

CN107866102B - Floating water purification system

Info

Publication number: CN107866102B
Application number: CN201610922027.5A
Authority: CN
Inventors: 蔡寅源
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-09-23
Filing date: 2016-10-21
Publication date: 2020-01-14
Anticipated expiration: 2036-10-21
Also published as: KR101752689B1; CN107866102A

Abstract

The invention relates to a floating water quality purification system, which comprises: a body having an inner space therein; at least one ballast tank disposed in the body and providing buoyancy such that the body floats on the water surface; a suction unit provided at the body to suck the upper water to an inner space of the body; a filter unit provided with the suction unit to filter the upper water sucked by the suction unit; and a discharge pipe provided in the body, having a flow path communicated to the inner space inside thereof so as to flow the upper water, extending downward from the body such that the upper water passing through the flow path is mixed with the deep water, and having a discharge port formed at a lower end thereof for discharging the water of the flow path.

Description

Floating water purification system

Technical Field

The present invention relates to a floating water purification system, and more particularly, to a floating water purification system for supplying upper water to deep water by utilizing a flow system directly below atmospheric pressure.

Background

When domestic wastewater, sewage, etc. containing organic matters enter rivers, lakes and seas, eutrophication occurs in the process of decomposition of the organic matters by microorganisms. If the water self-purification capacity exceeds the limit due to eutrophication, the nutrient salts become abundant, and aquatic plants and green algae thrive and Biochemical Oxygen Demand (BOD) increases, so that the amount of dissolved oxygen in the water is insufficient, and the aquatic organisms cannot survive.

In order to solve the problems, the existing lake and marsh water quality circulating equipment is partially used at present. As disclosed in korean patent laid-open No. 10-1440141, the existing lake and marsh water quality circulation apparatus includes a water quality circulation apparatus floating on the water surface by a plurality of floating objects, a motor and an impeller driven by an external power source, so that water is sucked to the upper portion through a suction hose provided in the water and circulated to improve the water quality in the water.

However, the conventional water circulation device sucks deep water and supplies the deep water to the water surface, and thus, the sediment is sucked and supplied to the upper water side in addition to the deep water, thereby causing the upper water to be turbid.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a floating water purification system which sucks the upper layer water and supplies the upper layer water to the deep layer water side in a flow manner directly below atmospheric pressure.

To achieve the above object, a floating water purification system according to the present invention comprises: a body having an inner space therein; at least one ballast tank disposed in the body and providing buoyancy such that the body floats on the surface of the water; a suction unit provided at the body to suck the upper water to an inner space of the body; a filter unit provided at the suction unit to filter the upper water sucked by the suction unit; and a discharge pipe provided in the body, having a flow path communicated to the inner space inside thereof so as to flow the upper water, extending downward from the body such that the upper water passing through the flow path is mixed with the deep water, and having a discharge port formed at a lower end thereof for discharging the water of the flow path.

In addition, the floating water quality purification system also comprises at least one planting unit, wherein the planting unit is arranged on the body and is provided with a planting space for planting plants.

The filter unit includes: a housing having a receiving space therein and formed with an injection port for inflow of upper water sucked from the suction unit, and provided with an outflow port at a position spaced downward from the injection port so as to discharge the upper water flowing into the receiving space, and provided at the body such that the upper water discharged from the outflow port flows into the inner space; and a filtering unit accommodated inside the housing so as to filter foreign materials contained in the upper water introduced into the housing.

The filter unit preferably has: a first filter member including a plurality of filter balls introduced into the receiving space of the housing to form a plurality of gap spaces through which the upper water passes and which filters foreign substances contained in the upper water, the filter balls being arranged in an up-down direction to form a plurality of layers; and a second filter member which is positioned inside the housing at a lower side of the first filter member and is provided with a filter opening having a smaller area than the gap space so as to filter foreign substances contained in the upper water passing through the first filter member.

In addition, the filtering unit may also include a soil layer, which is accommodated in the housing, filters foreign matter contained in the upper water and allows plants to be planted.

The water purification system according to the present invention may further include: at least one auxiliary tank provided in the body, having an inflow space inside, and having an inflow port formed at one side thereof such that water flows into the inflow space; and a position adjusting unit which adjusts a position of the body with respect to a water surface so that the upper water flows into the inflow port, and the suction unit may suction the upper water flowing into the auxiliary tank to supply the upper water to an inner space of the body.

The position adjusting unit may include: a first sensor provided in the auxiliary tank at a position adjacent to the inflow port to detect water; a buoyancy adjusting unit provided at the ballast tank to adjust buoyancy of the ballast tank; and a control unit which determines that the position of the inflow port is higher than the water surface when water is not detected by the first sensor, thereby reducing buoyancy of the ballast tank, and determines that upper water flows into the inflow port when water is detected by the first sensor, thereby controlling the buoyancy adjusting unit to maintain buoyancy of the ballast tank.

The ballast tank has a buoyancy space inside thereof, and the buoyancy adjusting unit includes: a water discharge pipe provided at a lower portion of the ballast tank such that water flows into the buoyancy space or water in the buoyancy space is discharged to the outside; an on-off valve provided in the drain pipe so as to open and close the drain pipe; and a compressor connected to the ballast tank to inject outside air into the buoyancy space or discharge the inside air of the buoyancy space to the outside, and when water is not detected by the first sensor, the control unit opens the drain pipe through the switching valve and operates the compressor to discharge the inside air of the buoyancy space to the outside so that water flows into the buoyancy space through the drain pipe, and when water is detected by the first sensor, the control unit operates the switching valve to close the drain pipe and stops the compressor.

The position adjusting unit may further include a second sensor provided at the auxiliary tank or the body at a position spaced apart upward from the inflow port by a predetermined limit distance to detect water, and when water is detected by the second sensor, the control unit may judge that the inflow port is out of the range of upper water, so that the switching valve may be operated to open the drain pipe to increase buoyancy of the ballast tank, and the compressor may be operated to inject outside air into the buoyancy space.

In addition, the filter unit may further include aquatic plants that are grown in the upper water flowing into the inflow space of the auxiliary tank and remove pollutants from the upper water.

In addition, the water purification system according to the present invention may further include: and a check valve provided at a lower portion of the discharge pipe to open and close the discharge port, such that the upper water passing through the flow path is discharged to an outside of the discharge pipe through the discharge port, and the deep water is blocked from flowing into an inside of the discharge pipe through the discharge port.

The floating water quality purification system has the following advantages: since the upper water is sucked and supplied to the deep water side in a flow manner directly below the atmospheric pressure, the water can be prevented from becoming turbid due to the precipitate even if the upper water and the deep water are purified.

Drawings

Fig. 1 is a perspective view of a floating water purification system according to the present invention.

Fig. 2 is a cross-sectional view of the floating water purification system of fig. 1.

Fig. 3 is a cross-sectional view of a floating water purification system according to another embodiment of the present invention.

Fig. 4 is a cross-sectional view of a floating water purification system according to another embodiment of the present invention.

Fig. 5 is a cross-sectional view of a floating water purification system according to another embodiment of the present invention.

Fig. 6 is a cross-sectional view of a floating water purification system according to another embodiment of the present invention.

Fig. 7 is a cross-sectional view of a floating water purification system according to another embodiment of the present invention.

Fig. 8 is a cross-sectional view of a floating water purification system according to another embodiment of the present invention.

Reference numerals

100 floating water quality purification system

110: body

111 main body

112: sub-body

113 inner space

114 planting unit

120 ballast tank

130 suction unit

131 the first connecting pipe

132 second connecting pipe

133 feed pump

140 filter unit

150 discharge pipe

151 flow path

152 discharge port

Detailed Description

Hereinafter, a floating water purification system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention may take many forms and various modifications and embodiments, and specific embodiments thereof are shown in the drawings and will herein be described in detail. However, the present invention is not limited to the specific embodiments disclosed, and all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention are to be understood as included therein. Like reference numerals are used for like components in the description of the respective drawings. In the drawings, the size of the structure is shown enlarged as compared with the actual size in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the terms are not limited to the components. The terms are used only to distinguish one constituent element from another constituent element. For example, a first component may be termed a second component, and similarly, a second component may be termed a first component, without departing from the scope of the present invention.

The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms also include the plural forms as long as not specifically mentioned in the sentence. The terms "comprising", "including", "having", and the like, used in the present specification indicate that the features, numerals, steps, operations, constituent elements, components, or their combination products described in the specification are included, and are not to be construed as excluding the existence or addition possibility of one or more other features, numerals, steps, operations, constituent elements, components, or their combination products.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used in the prior art should be interpreted as meaning consistent with the meaning of the context of the related art, and should not be interpreted as meaning in an ideal or excessive form unless explicitly defined otherwise.

A floating water purification system 100 according to the present invention is shown in fig. 1 and 2.

Referring to the drawings, the floating water purification system 100 comprises: a body 110, the body 110 having an inner space 113 therein; at least one ballast tank 120 provided at the body 110 and providing buoyancy such that the body 110 floats on the water surface; a suction unit 130 provided at the body 110 to suck the upper water to the inner space 113 of the body 110; a filter unit 140 provided at the suction unit 130 to filter the upper water sucked by the suction unit 130; and a discharge pipe 150 provided at the body 110, the discharge pipe 150 having a flow path 151 connected to the inner space 113 inside thereof to flow the upper water through the flow path 151, the discharge pipe 150 extending downward from the body 110 such that the upper water passing through the flow path 151 is mixed with the deep water, the discharge pipe 150 having a discharge port 152 formed at a lower end thereof to discharge the water of the flow path 151.

The body 110 includes a main body 111 disposed in the inner space 113 and a plurality of sub-bodies 112 radially disposed on an outer circumferential surface of the main body 111.

The body 111 has an inner space 113 therein, and an upper portion thereof is formed to be open. Preferably, the body 111 is formed in a cylindrical shape having a predetermined outer diameter, an upper portion thereof is opened, and a lower portion thereof is formed in a conical shape having an outer diameter which is reduced as it goes downward.

The sub-body 112 is fixed to an outer circumferential surface of the main body 111 and extends in a direction spaced apart from the main body 111. The sub-body 112 has an arrangement space in which the suction unit 130 is arranged inside. In the illustrated example, only the structure in which three sub-bodies 112 are provided in the main body 111 is described, but the sub-bodies 112 are not limited thereto, and two or less or four or more sub-bodies 112 may be provided in the main body 111 according to the size of the main body 111.

Further, a planting unit 114 is provided at an upper end portion of the sub-body 112, and the planting unit 114 has a planting space in which plants are planted. The planting unit 114 has an open upper portion and a plurality of through holes formed in a bottom surface thereof. Plants can be planted in the planting space of the planting unit 114.

The plurality of ballast tanks 120 are fixed to lower portions of the plurality of sub-bodies 112, respectively. The ballast tank 120 has a buoyancy space inside to generate buoyancy. The worker may fill a predetermined amount of water into the interior of the ballast tank 120 in order to adjust the buoyancy acting on the body 110. In the illustrated example, only the structure in which three ballast tanks 120 are provided in the body 110 is described, but the ballast tanks 120 are not limited to the illustrated example, and two or less or four or more ballast tanks 120 may be provided in the body 110 depending on the size of the body 110.

The suction unit 130 includes a first connection pipe 131, a second connection pipe 132, and a supply pump 133, the first connection pipe 131 being disposed at the sub-body 112 in such a manner that one end thereof protrudes toward the lower portion of the sub-body 112, and an injection port into which water is introduced is formed at the lower end portion of the first connection pipe 131, the second connection pipe 132 being connected to the main body 111 in such a manner that one end thereof is communicated to the inner space 113 of the main body 111, the supply pump 133 being disposed inside the sub-body 112 and being disposed at the other end portions of the first connection pipe 131 and the second connection pipe 132, so as to suck upper water through the first connection pipe 131 and discharge the sucked upper water to the inner space 113 of the main body 111 through the second connection pipe 132. Preferably, a plurality of the suction units 130 are respectively provided at the sub-body 112.

The filter units 140 are respectively provided at one end portions of the first connection pipes 131 to filter foreign materials contained in the upper water flowing into the first connection pipes 131. Although not shown in the drawings, the filter unit 140 preferably includes a plurality of filtering ports provided at the injection port of the first connection pipe 131 to allow the upper water to flow in and filter the foreign substances.

In addition, as shown in fig. 3, a filter unit 140 may be provided in the inner space 113 of the main body 111. At this time, the filter unit 140 is disposed in the inner space 113 located below the end of the second connection pipe 132 connected to the main body 111, and is preferably formed to have a sectional area corresponding to the inner space 113.

An upper end portion of the discharge pipe 150 is connected with a lower portion of the main body 111, and a lower end portion of the discharge pipe 150 is formed to extend downward from the main body 111 so as to be adjacent to the bottom surface of the lake or river. The discharge pipe 150 is formed as a bellows having a plurality of wrinkles on an outer circumferential surface thereof, and the discharge port 152 is formed on a lower surface of the discharge pipe 150.

The operation of the floating water purification system 100 according to the present invention configured as described above will be specifically described as follows.

First, the body 110 is set in the purification target water area such that the body 110 floats on the water surface by the buoyancy provided by the ballast tank 120. The suction unit 130 provided in the body 110 sucks the supernatant water of the purification target water area to supply the water to the internal space 113 of the body 110. At this time, the filter unit 140 filters the upper water supplied to the inner space 113. After the upper water supplied to the inner space 113 is filtered by the filter unit 140, the upper water moves down along the discharge pipe 150 by atmospheric pressure, is discharged through the discharge port 152 of the discharge pipe 150, and is thus mixed with the deep water.

The floating water purification system 100 according to the present invention configured as above is supplied to the deep water side in a flow manner directly below the atmospheric pressure by sucking the supernatant water, and therefore even if the supernatant water and the deep water are purified, the water can be prevented from becoming turbid due to the sediment.

In addition, a filter unit 160 according to another embodiment of the present invention is shown in fig. 4.

Like reference numerals denote like-functioning parts shown in the previous embodiments.

Referring to the drawings, the filter unit 160 includes a housing 161 and a filter unit 162, the housing 161 having a receiving space therein and formed with an injection port for inflow of upper water sucked from the suction unit 130, and being provided with an outflow port at a position spaced downward from the injection port so as to discharge the upper water flowing into the receiving space, the housing 161 being provided at the body 110 so that the upper water discharged from the outflow port flows into the inner space 113, and the filter unit 162 being received in the housing 161 to filter foreign substances contained in the upper water introduced into the housing 161.

The casing 161 is fixed to an upper portion of an inner surface of the body 111, the second connection pipe 132 is provided to the inlet, and a plurality of the outlet ports are formed on a lower surface of the casing 161. Also, preferably, a plurality of housings 161 are respectively provided at the second connection pipes 132 of the suction unit 130.

The filter unit 162 includes a first filter member including a plurality of filter balls 163 introduced into the receiving space of the housing 161 to form a plurality of gap spaces through which the upper water passes and to filter foreign substances contained in the upper water, and a second filter member 164 located inside the housing 161 at a lower side of the first filter member and having a filter opening with a smaller area than the gap spaces to filter foreign substances contained in the upper water passing through the first filter member.

The filter balls 163 are three-dimensionally formed to have a predetermined shape, and a plurality of the filter balls 163 are arranged in the up-down direction to form a plurality of layers. The filter ball 163 may be made of a material such as crushed stone, etc. having a surface that can be easily reused by cleaning and having a relatively irregular shape.

The second filter member 164 is disposed inside the case 161 at the lower side of the first filter member to filter the upper water passing through the first filter member again. As described above, the filtering unit 162 performs the multistage filtering of the upper water by the first and second filtering members 164, and thus can improve the filtering efficiency of the upper water.

In addition, a filter unit 170 according to another embodiment of the present invention is shown in fig. 5.

Referring to the drawings, the filter unit 170 includes a soil layer 171, and the soil layer 171 is received inside the housing 161, filters foreign materials contained in the upper water, and allows plants to be planted. At this time, it is preferable that the housing 161 is provided in the inner space 113 of the body 111, and is formed to have a sectional area corresponding to the inner space 113.

The soil layer 171 has the following advantages: the foreign matter contained in the upper water pumped by the supply pump 133 is filtered while passing through the soil 171, and the appearance is beautiful due to the plants planted in the soil 171.

Additionally, a floating water purification system 200 according to another embodiment of the present invention is shown in fig. 6.

Referring to the drawings, a floating water purification system 200 includes a plurality of auxiliary tanks 210 and a position adjusting unit 220, the auxiliary tanks 210 are disposed at the body 110, an inflow space 211 is formed inside the auxiliary tanks 210, an inflow port 212 is formed at one side of the auxiliary tanks 210 so that water flows into the inflow space 211, and the position adjusting unit 220 adjusts the position of the body 110 with respect to the water surface so that the upper water flows into the inflow port 212.

The auxiliary tanks 210 are provided on the outer circumferential surface of the main body 111, and although not shown in the drawings, a plurality of auxiliary tanks 210 are radially provided with respect to the main body 111, the number of the auxiliary tanks 210 is not limited thereto, and one auxiliary tank 210 may be provided according to the size of the main body 111.

The inflow port 212 is formed on the outer peripheral surface of the auxiliary tank 210 so that the upper water in the water area to be purified flows into the inflow space 211 through the inflow port 212. At this time, the supply pump 133 of the suction unit 130 is disposed inside the auxiliary tank 210, and is supplied to the inner space 113 of the main body 111 by sucking the upper water flowing into the auxiliary tank 210. The feed pump 133 is preferably a submersible pump.

The position adjusting unit 220 includes a first sensor 221, a buoyancy adjusting unit 222, and a control unit 223, the first sensor 221 is provided at the auxiliary tank 210 adjacent to the inflow port 212 to detect water, the buoyancy adjusting unit 222 is provided at the ballast tank 120 to adjust the buoyancy of the ballast tank 120, and when water is not detected by the first sensor 221, the control unit 223 judges that the inflow port 212 is positioned above the water surface to reduce the buoyancy of the ballast tank 120, and when water is detected by the first sensor 221, the control unit 223 judges that upper water flows into the inflow port 212 to control the buoyancy adjusting unit 222 to maintain the buoyancy of the ballast tank 120.

The first sensor 221 is provided on an inner surface of the auxiliary tank 210 at a position having a height corresponding to the inlet 212 with respect to a bottom surface of the auxiliary tank 210. The position where the first sensor 221 is provided is not limited to this, and the first sensor 221 may be provided at any position of the auxiliary tank 210 as long as it is adjacent to the inlet 212 and can detect the inflow of the supernatant water into the inlet 212.

The buoyancy adjusting unit 222 includes a drain pipe 224, an on-off valve 225, and a compressor 226, the drain pipe 224 is provided at a lower portion of the ballast tank 120 such that water flows into the buoyancy space or the water in the buoyancy space is discharged to the outside, the on-off valve 225 is provided at the drain pipe 224 so as to open and close the drain pipe 224, and the compressor 226 is connected to the ballast tank 120 so as to inject external air into the buoyancy space or discharge internal air of the buoyancy space to the outside.

The drain pipe 224 is provided at a lower portion of the ballast tank 120 that is immersed in water when the body 110 is installed in the purification target water area, and a discharge port (not shown) is formed at a lower end portion of the drain pipe 224 so that water flows in or out.

An on-off valve 225 is provided at the drain pipe 224 to open and close the drain pipe 224, and a solenoid valve is preferably used so as to enable remote control operation.

The compressor 226 is fixed to the upper surface of the auxiliary tank 210, but is not limited thereto, and is preferably provided at a portion of the auxiliary tank 210 or a portion of the body 110 except for a portion that is soaked in water when the body 110 is provided at the purification target water area.

When water is not detected by the first sensor 221, the control unit 223 judges that upper water stops flowing into the inflow port 212, thereby opening the water discharge pipe 224 through the switching valve 225, and operates the compressor 226 to discharge the inner gas of the buoyancy space to the outside, so that water flows into the buoyancy space through the water discharge pipe 224. At this time, the buoyancy of the ballast tank 120 is reduced, the body 110 is submerged, and the upper water flows into the inflow port 212.

In addition, when water is detected by the first sensor 221, the control unit 223 operates the switching valve 225 to close the water discharge pipe 224 and stops the compressor 226 so as to maintain the position of the body 110 with respect to the water surface.

In addition, the buoyancy adjusting unit 222 further includes a second sensor 227, and the second sensor 227 is disposed at the auxiliary tank 210 or the body 110 at a position spaced apart upward from the inflow port 212 by a predetermined limit distance to detect water.

At this time, when water is detected by the second sensor 227, the control unit 223 determines that the position of the inflow port 212 is out of the range of upper water, operates the open/close valve 225 to open the drain pipe 224 so that the buoyancy of the ballast tank 120 can be increased, and operates the compressor 120 to inject outside air into the buoyancy space.

As described above, the control unit 223 detects whether or not the auxiliary tank 210 is submerged below the water surface by the second sensor 227, and if the submerged depth of the auxiliary tank 210 is equal to or greater than the set depth, the control unit 223 controls the buoyancy adjusting unit 222 to flow the upper water into the auxiliary tank 210 by increasing the buoyancy of the ballast tank 120, and thus, only the upper water of the purification target water area can be pumped and supplied to the internal space 113 of the main body 111.

In addition, a filter unit 230 according to another embodiment of the present invention is shown in fig. 7.

Referring to the drawings, the filter unit 230 further includes an aquatic plant 231, and the aquatic plant 231 is planted in the upper water flowing into the inflow space of the auxiliary tank 210 and removes contaminants from the upper water. The aquatic plants 231 float on the upper water flowing into the auxiliary tank 210, and examples thereof include plants such as water hyacinth, which can be planted. In this case, the upper surface of the auxiliary tank 210 is preferably formed to be open.

As described above, the aquatic plants 231 are planted in the auxiliary tank 210, and the pollutants contained in the upper water are filtered by the roots of the aquatic plants 231, thereby further improving the efficiency of purifying the upper water sucked by the suction unit 130.

In addition, a floating water purification system 300 according to another embodiment of the present invention is shown in fig. 8.

Referring to the drawings, the floating water purification system 300 further includes a check valve 301, the check valve 301 being disposed at a lower portion of the discharge pipe 150 to open and close the discharge port 152, such that the upper layer water passing through the flow path 151 is discharged to the outside of the discharge pipe 150 through the discharge port 152, and the deep layer water is blocked from flowing into the inside of the discharge pipe 150 through the discharge port 152.

One end of the check valve 301 is fixed to the lower surface of the discharge pipe 150 and is formed to have a larger area than the discharge port 152 so as to cover the discharge port 152. The check valve 301 is provided at an outer side surface of the discharge pipe 150 such that the upper layer water passing through the flow path 151 is discharged to the outside of the discharge pipe 150 through the discharge port 152 and the deep layer water is blocked from flowing into the inside of the discharge pipe 150 through the discharge port 152, and the check valve 301 is formed of a material having elasticity so as to be easily bent.

The upper water pumped by the pumping unit 130 flows into the inner space 113 of the main body 111, and at this time, if the water level in the inner space 113 is higher than the water level of the water area outside the main body 111, a high pressure is applied to the check valve 301 by the atmospheric pressure, and the check valve 301 is bent by the pressure to open the discharge port 152 of the discharge pipe 150. The inflow of water in the water area to be purified into the discharge pipe 150 is blocked by the check valve 301, and the filtered upper layer water is directly supplied to the deep layer water, thereby improving the efficiency of purifying the deep layer water.

The embodiments described above are disclosed to enable any person skilled in the art to make or use the invention. One of ordinary skill in the art may implement the embodiments in varying ways and the general principles defined in this specification may be applied to other embodiments without departing from the general principles of the invention. Therefore, the present invention should be construed in view of the full breadth of the present disclosure consistent with the principles and features thereof, and should not be construed as limited by such embodiments.

Claims

1. A floating water purification system comprising:

a body having an inner space therein;

at least one ballast tank disposed in the body and providing buoyancy such that the body floats on the surface of the water;

a suction unit provided at the body to suck the upper water to an inner space of the body;

a filter unit provided at the suction unit to filter the upper water sucked by the suction unit; and

a discharge pipe provided at the body, having a flow path communicated to the inner space inside thereof so as to flow the upper water, extending downward from the body such that the upper water passing through the flow path is mixed with the deep water, the discharge pipe having a discharge port formed at a lower end thereof for discharging the water of the flow path;

at least one auxiliary tank provided in the body, having an inflow space inside, and having an inflow port formed at one side thereof such that water flows into the inflow space;

a position adjusting unit for adjusting the position of the body relative to the water surface so that the upper layer water flows into the inflow port;

the position adjustment unit includes:

a first sensor provided at a position adjacent to the inflow port of the auxiliary tank to detect water;

a buoyancy adjusting unit provided at the ballast tank to adjust buoyancy of the ballast tank; and

and a control unit that determines that the inflow port is positioned higher than a water surface when water is not detected by the first sensor, thereby reducing buoyancy of the ballast tank, and determines that upper water flows into the inflow port when water is detected by the first sensor, thereby controlling the buoyancy adjusting unit to maintain buoyancy of the ballast tank.

2. The floating water purification system according to claim 1 further comprising at least one planting unit disposed in said body and having a planting space for plants to plant.

3. The floating water purification system according to claim 1,

the filter unit includes:

a housing having a receiving space therein and formed with an injection port for inflow of upper water sucked from the suction unit, and provided with an outflow port at a position spaced downward from the injection port so as to discharge the upper water flowing into the receiving space, and provided at the body such that the upper water discharged from the outflow port flows into the inner space; and

a filtering unit accommodated inside the housing to filter foreign materials contained in the upper water introduced into the housing.

4. The floating water purification system of claim 3,

the filter unit has:

a first filter member including a plurality of filter balls introduced into the receiving space of the housing to form a plurality of gap spaces through which the upper water passes and which filters foreign substances contained in the upper water, the filter balls being arranged in an up-down direction to form a plurality of layers; and

a second filter member positioned inside the housing at a lower side of the first filter member and provided with a filter opening having a smaller area than the gap space so as to filter foreign substances contained in the upper water passing through the first filter member.

5. The floating water purification system according to claim 3, wherein said filter unit comprises a soil layer which is contained inside said housing, filters foreign matter contained in said upper water and allows plants to grow.

6. The floating water purification system of claim 1 further comprising:

wherein the suction unit sucks the upper water flowing into the auxiliary tank to be supplied to the inner space of the body.

7. The floating water purification system according to claim 1,

the interior of the ballast tank has a buoyancy space,

and, the buoyancy adjusting unit includes:

a water discharge pipe provided at a lower portion of the ballast tank such that water flows into the buoyancy space or water in the buoyancy space is discharged to the outside;

an on-off valve provided in the drain pipe so as to open and close the drain pipe; and

a compressor connected to the ballast tank to inject outside air into the buoyancy space or discharge inside air of the buoyancy space to the outside,

and, when water is not detected through the first sensor, the control unit opens the drain pipe through the switching valve and operates the compressor to discharge the interior gas of the buoyancy space to the outside such that water flows into the buoyancy space through the drain pipe,

when water is detected by the first sensor, the control unit operates the switching valve to close the drain pipe and stop the compressor.

8. The floating water purification system according to claim 7,

the position adjusting unit further includes a second sensor provided at a position of the auxiliary tank or the body spaced upward from the inflow port by a predetermined limit distance to detect water,

when water is detected by the second sensor, the control unit determines that the inflow port is out of the range of upper water, operates the open/close valve to open the drain pipe so as to increase the buoyancy of the ballast tank, and operates the compressor to inject outside air into the buoyancy space.

9. The floating water purification system of claim 1 further comprising:

and a check valve provided at a lower portion of the discharge pipe to open and close the discharge port, such that the upper water passing through the flow path is discharged to an outside of the discharge pipe through the discharge port, and the deep water is blocked from flowing into an inside of the discharge pipe through the discharge port.