KR20020044884A - Raw Water Purification and Treatment System For Aquaculture - Google Patents

Abstract

PURPOSE: Provided is a system for purifying wastewater in a fish farm capable of removing harmful bacteria and soluble organic/inorganic matter contained in incoming water by gravity, buoyancy and absorption. Therefore, it prevents obstruction to breathing and disease by the absorption of a parasite and harmful bacteria in the gill as well as death of fishes by bacterial infection. CONSTITUTION: This waste water purifying apparatus for fish farm comprises: a basic water treatment body(100); a water inlet hole for introducing pretreated water into the basic water treatment body by a motor pump(102); a first gas mixing part(104) for mixing gas and bubble according to the pressure of the untreated water; an advanced water treatment apparatus(101) for settling fine solids contained in introduced water by gravity and absorbing fine solids and water-soluble protein in bubble; a second gas mixing part(105) for supplying gas and bubble to water; and a discharge pipe(107) for discharging water treated in the advanced water treatment apparatus to the outside.

Description

Raw Water Purification and Treatment System for Aquaculture

The present invention relates to a raw water purification apparatus of a fish farm, and more particularly, to a raw water purification apparatus of a fish farm to remove harmful bacteria and contaminants that interfere with the growth of fish contained in the raw water of the fish farm.

In general, aquaculture farms block certain areas with nets in the cleanest waters and rivers, and trap fishes in the desired types inside the nets or install fish tanks for breeding fishes to raise fishes. It is true.

These farms are farmed under the same conditions as the seas and rivers while preventing fish from being caught by the nets and tanks in the seas and rivers, so that fish can grow well without any additional configuration, as well as appropriate food in the farms. It is used a lot because of the effect that can be supplied arbitrarily.

Since the cleanest water is needed to raise fry and sea urchins, this water is collected from the sea and rivers, or near the ground. It is used to flow into intake tank or aquaculture tank.

However, the fish farming water is used as water for fish farming because the food and secretions left by the fish are deposited on the bottom, which contaminates the bottom of the bottom. There was a problem of environmental pollution.

In addition, to solve the above problems, the patent application No. 98-44108, Utility Model Application No. 98-22764 and 99-22973 have already been filed with the Korean Patent Office.

As shown in Fig. 1 and Fig. 2, Patent No. 98-44108 and Utility Model No. 98-22764 simply use sludge and contaminants contained in raw water of fish farms using a centrifuge (1) (1a). As shown in FIG. 3, Utility Model No. 99-22973 separates sludge using a centrifuge 10 and installs an air blower 11 to generate light air bubbles. Has been proposed to separate and remove light sludge.

However, the above configuration can be used to remove and remove sludges and contaminants, which are suspended solids of a certain size, contained in the raw water of fish farms using a centrifuge. And dissolving inorganic / organic substances cannot be removed. When supplying raw water infected with bacteria, the fish is infected with bacteria, the whole fish is killed and killed, and the raw water of the infected area cannot be used. The damage was very large, and the dissolved oxygen which is essential for the growth of the fish, that is, the dissolved oxygen could not be sufficiently supplied, there was a disadvantage in reducing the growth and production of the fish.

Accordingly, the present invention is to solve the conventional problems as described above, an object of the present invention, raw water containing harmful bacteria and dissolved organic / inorganic materials that interfere with the growth of fish in the gravity, buoyancy and adsorption action of the product Accordingly, by separating and removing harmful bacteria and dissolved organic and inorganic materials, it is possible to provide a raw water purification apparatus of a fish farm to improve fish growth and thereby increase fish production efficiency.

Another object of the present invention is to clean the raw water flowing into the product in one or two stages, the raw water purification apparatus of the fish farm to ensure that always remove the harmful harmful bacteria and dissolved organic and inorganic residues in the raw water To provide.

In order to achieve the above object, the raw water purification apparatus for purifying the raw water collected in the fish farm of the present invention is installed in communication with the basic water treatment body and the side wall surface of the basic water treatment body, based on untreated raw water by the pumping motor pump. A primary gas mixing unit installed in the raw water inlet flowing into the water treatment body and the sidewall surface of the basic water treatment body and mixing and supplying the gas and the air according to pressure to the untreated raw water introduced into the basic water treatment body through the raw water inlet; When the treated water flowing through the primary gas mixing part is installed vertically in the body of the basic water treatment body, the fine solid matter contained in the introduced raw water is precipitated according to gravity, and the fine solid material and the dissolved protein are bubbled using buoyancy of the bubble. On the other side wall of the basic water treatment body, A secondary gas mixing unit installed in communication with the side wall surface of the advanced water processor so that the raw water, which is installed in the tube and firstly treated by the basic water treatment body, flows into the advanced water processor to supply gas and bubbles to the raw water again; The water treatment body is in communication with the advanced water processor is characterized in that the treatment water discharge pipe is installed through the installation so as to discharge the raw water, the first and second processed in the advanced water processor to the outside.

1 is a cross-sectional view showing an embodiment of a conventional centrifuge,

Figure 2 is a cross-sectional view showing another embodiment of a conventional centrifuge

Figure 3 is a perspective view showing another embodiment of the conventional centrifuge,

Figure 4 is a partial cutaway perspective view showing the configuration of the raw water purification treatment apparatus of the fish farm of the present invention,

5 is a perspective view showing a combined state of the raw water purification treatment apparatus of the fish farm of the present invention,

Figure 6 is a side cross-sectional view showing an operating state of the raw water purification treatment apparatus of the fish farm of the present invention.

Figure 7 is a side cross-sectional view showing an operating state of the primary gas mixing unit of FIG.

Figure 8 is a side cross-sectional view showing an operating state of the secondary gas mixing unit of FIG.

<Explanation of symbols for the main parts of the drawings>

100: basic water treatment body 100a: primary precipitation funnel

100b: primary sediment discharge valve 100c: bubble discharge funnel

100d: bubble discharge pipe 101: advanced water treatment

101a: primary treatment water inlet 102: raw water intake motor pump

103: raw water inlet 104, 105: 1, secondary gas mixing section

104a, 105a: 1st, 2nd suction piping 104b, 105b: 1st, 2nd circulation motor

104c, 105c: 1st, 2nd water treatment discharge pipe 104d, 105d: 1st, 2nd inject

104e, 105e: 1st, 2nd gas inlet 106: 2nd settling funnel

107: secondary sediment discharge pipe 108: secondary sediment discharge valve

109: treatment water discharge pipe 109a: communication pipe

110: treated water level control valve

Hereinafter, a raw water purification treatment apparatus of a fish farm according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a partial cutaway perspective view showing the configuration of the raw water purification apparatus of the fish farm of the present invention, Figure 5 is a perspective view showing a combined state of the raw water purification apparatus of the fish farm of the present invention, Figure 6 is a fish of the present invention Side cross-sectional view showing an operating state of the raw water purification treatment apparatus of the farm, Figure 7 is a side cross-sectional view showing the operating state of the primary gas mixing unit of Figure 4, Figure 8 is a side showing the operating state of the secondary gas mixing unit of Figure 4 It is a section.

As shown in Figures 4 to 8, the raw water purification apparatus of the fish farm of the present invention, the basic water treatment body 100, the advanced water treatment unit 101, the primary treatment water inlet 101a, the motor pump 102 ), Raw water inlet 103, connecting pipe 103a, primary and secondary gas mixing section 104, 105, primary suction pipe 104a (105a), primary and secondary circulation motor pump 104b ( 105b), primary and secondary water treatment discharge pipes 104c and 105c, primary and secondary inject 104d and 105d, primary and secondary gas intakes 104e and 105e, and secondary sedimentation funnel 106 , The secondary sediment discharge pipe 107, the secondary sediment discharge valve 108, the treated water discharge pipe 109, the communication pipe (109a), the treated water level control valve 110 is composed of.

The raw water inlet 103 is in communication with the connection pipe (103a) so that the raw water of the water intake surface into the basic water treatment body 100 by the motor pump 102 is installed in communication with the side of the basic water treatment body 100 It is.

The primary sedimentation funnel (100a) is narrowed toward the bottom so that the solid material having a specific gravity greater than the water in the untreated raw water introduced into the basic water treatment body 100 through the raw water inlet 103 to be collected at the same time to the bottom. An inclined surface is formed.

The primary sediment discharge valve 100b is installed at the lower end of the primary sediment funnel 100a so as to discharge the large solid material collected in the primary sediment funnel 100a to the outside.

The primary gas mixing part 104 sucks the primary suction pipe 104a in communication with the basic water treatment body 100 so as to process the raw water from which the large solid material is removed, and the primary suction pipe ( Raw water sucked through the primary circulation motor (104b) through the primary circulation motor (104b) to inhale ozone gas, pure oxygen, and oxygen in the air by the primary gas inlet (104e) through the primary circulation motor (104b). The raw water discharged through the primary injecting 104d is sent back to the primary water treatment body 100 by dissolving the mixture into the primary injecting 104d and generating bubbles to adsorb the solid material and the dissolved protein. It consists of a primary water treatment discharge pipe 104c to be introduced.

In addition, the primary inject 104d is formed with a primary gas inlet 104e for supplying the gas to mix and dissolve the ozone gas, pure oxygen, and oxygen in the air.

The bubble discharge funnel (100c) is formed by forming the primary bubble at the same time as the air bubbles introduced from the primary gas mixing unit 104 adsorbs the solid material and dissolved protein from the lower end of the basic water treatment body 100 and discharged to the water In addition, the bubbles introduced from the secondary gas mixing unit 105 rises while adsorbing the solid matter and the dissolved protein from the lower end of the advanced water processor 101, and are discharged to the water and formed into secondary bubbles at the same time. The inclined surface that is narrowed toward the upper portion is formed so that the tea bubbles to the upper portion of the basic water treatment body 100 to be discharged out of the basic water treatment body.

The bubble discharge pipe (100d) is installed on the top of the bubble discharge funnel (100c) to discharge the bubbles collected in the bubble discharge funnel (100c) to the outside.

The advanced water processor 101, after the raw water is introduced into the basic water treatment body 100 and the primary treatment, the fine solid material remaining in the primary treated water is precipitated again according to gravity in the advanced water processor 101. In addition, the fine solid material is finely decomposed into the impeller of the pump and at the same time, it is vertical in the basic water treatment body 101 so that the buoyancy of the bubbles generated by the secondary inject 105d can be adsorbed to the bubbles and floated. It is installed.

In addition, the primary treatment water inlet 101a is formed on the advanced water processor 101 so that the primary treated raw water separated from the bubbles flows into the advanced water processor 101.

The secondary gas mixing unit 105 is the raw water introduced through the primary gas mixing unit 104 and the primary water treatment body 100 when the raw water is separated into the advanced water treatment unit 101 is introduced Bubbles generated from the secondary inject 105d installed in the lower portion while flowing to the lower portion of the advanced water processor 101 are introduced into the water surface and are brought into contact with the water at the same time, and the fine solid material and the dissolved protein contained in the raw water It is adsorbed into the bubble is treated with high water, in this state to suck the high-water treated raw water through the secondary suction pipe 105a so that the secondary treatment, and the raw water sucked through the secondary suction pipe 105a 2 Ozone gas, pure oxygen, and oxygen in the air, which sterilize by increasing the water pressure by the secondary circulation motor 105b, are sucked by the secondary gas intake port 105e, mixed and dissolved in raw water, and after the first treatment. Remaining fine solids and The secondary water treatment discharge is sent to the secondary injecting 105d generating bubbles so that the dissolved protein is adsorbed, and the raw water discharged through the secondary injecting 105d is introduced together with the bubbles into the advanced water processor 101. It consists of the piping 105c.

In addition, the secondary suction pipe 105a is installed through the basic water treatment body 100 so as to communicate with the lower side wall surface of the advanced water processor 101.

In addition, the secondary inject 105d is provided with a secondary gas suction port 105e for supplying the gas to mix and dissolve the ozone gas, pure oxygen, and oxygen in the air.

The treated water discharge pipe 109 is installed through the basic water treatment body 100 to discharge the raw water treated by the secondary gas mixing unit 105 and the advanced water processor 101 to the outside.

In addition, a communication pipe 109a is installed in the advanced water processor 101 so as to penetrate through the treated water discharge pipe 109.

In addition, the treated water discharge pipe 109 is provided with a treated water level control valve 110 to adjust the water level in the basic water treatment body 100 when discharging the raw water to the outside.

In addition, the secondary precipitation funnel 106 is narrowed toward the bottom so that the first treated raw water is introduced into the advanced water treatment machine 101, the basic water treatment and the advanced water treatment and the remaining fine solid material to be collected at the same time as the precipitation to the bottom An inclined surface is formed.

In addition, the secondary sediment discharge pipe 107 is installed at the lower end of the secondary sediment funnel 106 to discharge the fine solid material collected in the secondary sediment funnel 106 to the outside of the basic water treatment body 100. have.

In addition, the secondary sediment discharge valve 108 is the end of the secondary sediment discharge pipe 107 to control the discharge of the solid material when discharged out of the basic water treatment body 100 through the secondary sediment discharge pipe 107. Installed in

Then, the operation of the raw water purification treatment apparatus of the fish farm according to an embodiment of the present invention having the above configuration will be described in more detail with reference to FIGS. 4 to 8.

First, as shown in Figures 4 to 5, the raw water inlet 103 for introducing the raw water to the basic water treatment body 100 of the raw water purification apparatus of the fish farm to purify the raw water used in the fish farm. Since the raw water from the intake station through the raw water inlet 103 is introduced into the basic water treatment body 100 using the motor pump 102.

At this time, the incoming raw water is mixed with soil and organic solids, and the inorganic solid matters such as fine soil, stone, sand, and decaying organic substance have changed chemical structure and are completely dissolved in water. As agglomerates, they are very sticky and adhere to the gill-like respiratory tract of fish, preventing normal dissolved oxygen inhalation. Also, harmful bacteria attached to these solid components cause various kinds of fish disease when attached to the wound and respiratory tract of fish. In addition, when dissolved organic substances are introduced into the tank, when ammonia nitrite is generated at a certain concentration or higher due to aerobic decay in the tank, fish in the tank cause death.

In order to prevent this, the raw water should be purified, so that soil, stones, sand, etc., among the raw water introduced into the basic water treatment body 100 are heavy than water and are lower than the basic water treatment body 100 by gravity. Precipitate by gravity.

At this time, the large solid material that is precipitated is collected in the primary precipitation funnel (100a) because the primary precipitation funnel (100a) is formed with a slope that narrows toward the bottom so as to be collected under the basic water treatment body (100). .

The large solid material gathered in the primary sediment funnel (100a) is provided with a primary sediment discharge valve (100b) at the lower end of the primary sediment funnel (100a), through the primary sediment discharge valve (100b) Drain the solid material to the outside.

In this state, as shown in FIG. 7, the raw water from which the solid material having a greater specific gravity than the water is removed is used for the primary water treatment body to perform the primary treatment for removing the solid material having a smaller specific gravity than the water and dissolved organic / inorganic substances. 100) is sucked into the primary suction pipe 104a of the primary gas mixing part 104 provided on the side wall surface.

Raw water sucked into the primary suction pipe (104a) is sent to the primary inject (104d) to increase the pressure of the water through the primary circulation motor (104b).

At this time, the primary inject 104d inhales ozone gas, pure oxygen, and oxygen in the air that sterilizes the incoming raw water by the primary gas inlet 104e to mix and dissolve the raw water and solidify the same. By generating bubbles so that substances and dissolved proteins are adsorbed, the raw water is sterilized by ozone gas and the dissolved oxygen is increased through the primary inject 104d, and solids and dissolved proteins having less specific gravity than water are generated in the bubbles. Adsorb.

In this state, the raw water discharged from the primary inject 104d is sent to the primary water treatment discharge pipe 104c to introduce the raw water back into the basic water treatment body 100.

The primary treated water is introduced into the basic water treatment body 100 through the primary water treatment discharge pipe 104c.

At this time, the introduced raw water is attached to the fine bubbles introduced into the lower portion of the basic water treatment body 100 and the solid matter and organic / inorganic material is floated together with the bubbles to the upper portion of the basic water treatment body 100 by buoyancy of the bubble.

At the same time, the bubbles with the solid substance and the dissolved protein attached are separated from the raw water and the water surface without bursting and are formed into bubbles, and the inclined surface is formed to be narrowed upwards so that the bubbles can be collected and discharged to the upper portion of the basic water treatment body 100. Since the bubble discharge funnel 100c is formed, the bubbles separated from the raw water are collected by the bubble discharge funnel 100c.

Bubbles collected by the bubble discharge funnel (100c) is discharged to the outside through the bubble discharge pipe (100d) installed on the top of the bubble discharge funnel (100c).

In this process, the flow velocity area of the raw water in the basic water treatment body 100 is sufficiently large so that the floating speed Va due to buoyancy of bubbles is lower than that of the upper altitude water processor 101 at the lower portion of the basic water treatment body 100. By increasing the raw water average flow rate (Vw) to the secondary treated water inlet 101a, the contact probability of suspended solids and dissolved organic / inorganic substances in the basic water treatment body 100 is increased, and the adsorption capacity of air bubbles is increased, resulting in bubbles at the water surface. It can increase the formation capacity and generate a lot of bubbles. As a result, only the primary treated raw water in which the bubbles are separated into the primary treated water inlet 101a flows in.

Here, as shown in FIG. 8, the raw water from which bubbles are removed after the basic water treatment and the primary treatment is again treated with the primary treatment water inlet of the advanced water treatment unit 101 built in the basic water treatment body 100 for the advanced water treatment. Flows into 101a).

In this case, the fine solid material having a greater specific gravity than the remaining water after the introduced raw water is treated with the basic water and the advanced water is precipitated under the advanced water processor 101. Since the secondary precipitation funnel 106 is formed in the lower portion of the advanced water treatment unit 101 is formed in the lower slanted funnel (106) formed to be narrowed toward the bottom so as to collect the fine solid material precipitated, than the water in the secondary precipitation funnel (106) Fine solids with a high specific gravity are collected.

At this time, since the secondary precipitate discharge pipe 107 is formed at the lower end of the secondary precipitate funnel 106 to discharge the fine solid material collected in the secondary precipitate funnel 106, the secondary precipitate discharge pipe The fine solid material is discharged to the outside through 107.

At this time, since the secondary sediment discharge valve 108 is installed at the end of the secondary sediment discharge pipe 107 to control the discharge when the solid material is discharged to the outside, the solid material through the secondary sediment discharge valve 108 It can control what is discharged to the outside.

In this state, the raw water from which the fine solid material has been removed is installed through another side wall surface of the basic water treatment body 100 to perform the secondary treatment of the secondary gas mixing part 105 installed on the side of the advanced water treatment machine 101. It is suctioned into the secondary suction pipe 105a.

The raw water sucked through the secondary suction pipe 105a increases the pressure of water through the secondary circulation motor 105b and is sent to the secondary inject 105d.

At this time, the secondary injecting 105d sucks ozone gas, pure oxygen, and oxygen in the air which are sterilizing the incoming raw water by the secondary gas inlet 105e to mix and dissolve it in the raw water, By generating bubbles to adsorb the solid material and the dissolved protein, the sterilization action and the amount of dissolved oxygen are increased by ozone gas through the secondary inject 105d, and the fine bubbles and the dissolved protein are adsorbed to the generated bubbles.

In this state, the raw water discharged from the secondary inject 105d is sent to the secondary water treatment discharge pipe 105c to introduce the raw water discharged back into the advanced water processor 101.

The secondary treated raw water is introduced into the advanced water processor 101 through the secondary water treatment discharge pipe 105c.

At this time, the air bubbles introduced together with the raw water treated as described above are adsorbed by the fine solid material and dissolved organic / inorganic material to rise by buoyancy of the bubble from the bottom of the advanced water processor 101 to the top, and the advanced water processor 101 In contact with the raw water flowing through the primary treatment water inlet 101 of the) and flowing from the top to the bottom and the rising air bubbles at the same time the fine solids and dissolved proteins contained in the incoming raw water is adsorbed bubbles. This raw water treatment method is called advanced water treatment method.

Here, the principle of the advanced water treatment method is as follows. The contact probability per unit time of solid matter and dissolved organic / inorganic matter by the bubble is proportional to the underwater movement distance of the bubble per unit time, and thus becomes larger in the basic water treatment body 100. In other words, since the bubble velocity (Va) is due to buoyancy, the flow rate V2w of the raw water flowing from the upper portion of the advanced water processor 101 to the lower portion is Vw <V2w because the flow velocity cross section is smaller than the flow velocity cross section of the basic water treatment tank. The flow direction is the same direction in the basic water treatment body 100, whereas in the altitude water processor 101, since it is the opposite direction to the floating direction of the bubbles, the water flow rate is increased by (Va + V2w) / (Va-Vw) times. Water treatment efficiency due to bubbles in the) is greater than the basic water treatment body (100).

At the same time, the raw water from which bubbles are removed supplies raw water purified through the treated water discharge pipe 109 communicated with the advanced water processor 101 to the farm.

At this time, the treatment water discharge pipe 109 is provided with a treatment water level control valve 110 to adjust the discharge water level of the raw water.

On the other hand, as described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit and scope of the present invention.

As described above, according to the raw water purification treatment apparatus of the fish farm according to the present invention,

By separating and removing harmful bacteria and dissolved oils / minerals that interfere with the growth of the fish contained in the fish farming raw water, the fish are not only infected with bacteria but also killed, and parasites and harmful bacteria in the gills of the fish This adsorption prevents respiratory obstruction and disease, and prevents secondary pollution in the tank, thereby improving fish growth, and increasing dissolved oxygen, thereby increasing fish production efficiency.

Claims (5)

In the raw water purification treatment apparatus for purifying raw water collected from fish farms, The raw water purification treatment device, Basic water treatment body, A raw water inlet port communicating with the side wall surface of the basic water treatment body and introducing untreated raw water into the basic water treatment body by the pump motor; A primary gas mixing unit installed on the side wall of the basic water treatment body and mixing and supplying gas and bubbles to the untreated raw water introduced into the basic water treatment body through the raw water inlet; When the treated water flowing through the primary gas mixing part is installed vertically in the basic water treatment body, the fine solid material contained in the introduced raw water is precipitated according to the gravity and at the same time, the fine solid material and the dissolved protein are made using buoyancy of the bubble. An advanced water processor which floats by adsorbing to bubbles, Installed in another side wall surface of the basic water treatment body when the raw water treated first in the basic water treatment body flows into the advanced water processor, and communicates with the advanced water processor side wall to supply gas and air bubbles to the raw water again. Installed secondary gas mixing unit, Collected raw water purification apparatus of the fish farm, characterized in that the treatment water discharge pipe is communicated with the advanced water processor in the basic water treatment body so as to discharge the raw water treated in the advanced water processor to the outside. . The method of claim 1, The basic water treatment body is formed in the lower portion of the basic water treatment body, when untreated raw water flows into the basic water treatment body, a solid surface having a larger specific gravity than water is precipitated downward so that the lower slope becomes narrower toward the bottom so as to be collected at the same time. Sedimentation funnel, A primary sediment discharge valve installed at the lower end of the primary sedimentation funnel to discharge the solid matter collected in the primary sedimentation funnel to the outside; Bubbles adsorbed on the basic water treatment body and the advanced water treatment body and suspended solids and dissolved oils / inorganic matters are separated from the raw water and formed into bubbles to collect the bubbles above the basic water treatment body. Bubble discharge funnel formed with a slope that becomes narrower toward the top so that, Raw water purification apparatus of the fish farm, characterized in that the bubble discharge pipe is installed on the top of the bubble discharge funnel to discharge the bubbles collected in the bubble discharge funnel to the outside. The method of claim 1, The primary gas mixing unit, the primary suction pipe for sucking the raw water separated from the large solid material when the raw water is introduced into the basic water treatment body through the raw water inlet, Untreated raw water sucked through the primary suction pipe increases the pressure of water through the primary circulation motor, inhales and dissolves ozone gas, pure oxygen, and oxygen in the air, dissolving and mixing the raw water with solid substances and dissolved proteins. Primary injecting bubbles to allow adsorption; Raw water purification apparatus of a fish farm, characterized in that the primary water treatment discharge pipe to introduce the gas and bubble mixed raw water discharged through the primary inject back into the basic water treatment body. The method of claim 1, The advanced water treatment unit, and the primary treatment water inlet formed so that the first raw water treated in the upper portion into the advanced water treatment unit, A secondary precipitation funnel having an inclined surface narrowing downward so that the first treated raw water flows into the advanced water processor under the advanced water processor so that the fine solids remaining after the first treatment are collected at the same time as the precipitate, A secondary sediment discharge pipe installed at a lower end of the secondary sediment funnel to discharge the sediment collected in the lower portion of the secondary sediment funnel to the outside of the basic water treatment body; Raw water purification apparatus of the fish farm, characterized in that the secondary sediment discharge valve is installed at the end of the secondary sediment discharge pipe to discharge the sediment when the sediment is discharged to the outside of the body. The method of claim 1, The secondary gas mixing unit, the secondary suction pipe for inhaling the first treated raw water through the basic water treatment body into the advanced water treatment unit so that the fine water and dissolved protein remaining after the first treatment can be treated with advanced water; Inhaled ozone gas, pure oxygen, and oxygen in the air, which are sterilized by raising the pressure of the water by the secondary circulation motor pump, are mixed with the primary water and dissolved in the raw water. Secondary injecting bubbles to adsorb fine solids and dissolved proteins remaining after treatment; Raw water purification apparatus of a fish farm, characterized in that the secondary water treatment discharge pipe so as to introduce the gas and bubble mixed raw water discharged through the secondary inject back into the advanced water treatment.