KR101587264B1 - water treatment tank having floatation function and precipitation function - Google Patents

Abstract

The present invention relates to a water treatment tank having a floating function and a precipitating function, and more specifically, to a water treatment tank having a floating function and a precipitating function, the water treatment tank being capable of simultaneously removing oil and sludge by floating the oil contained in wastewater and precipitating the sludge contained in the wastewater in one apparatus. The water treatment tank of the present invention comprises: a main body including a cylindrical main tank, and a conical part formed below the main tank and having a gradually narrowing inner space; a target treatment water inlet, which is extended to an inside of the main body from an outside of the main body such that the target treatment water can flow into the main body; a first cyclic sub-tank installed inside the main tank and disposed at a position corresponding to an end portion of the treatment water inlet, wherein the target treatment water, discharged from the target treatment water inlet, flows in from the lower part to form an upstream; a second cyclic sub-tank installed between the main tank and the first sub-tank to be separated, and having the top and bottom ends higher than the top and bottom ends of the first sub-tank, wherein the target treatment water flowing over the top end of the first sub-tank flows in to form a downstream; a treatment water overflowing inlet installed on an inside surface of the main tank to form a treatment water inflow space which the treatment water, passing through the second sub-tank to remove contaminants, floats and flows in; and a treatment water discharge pipe installed in the main body to be connected with the treatment water inflow space to discharge out the treatment water.

Description

A water treatment tank having a floatation function and a precipitation function,

The present invention relates to a water treatment tank having both a floating and a settling function, wherein the water contained in the wastewater is floated in one facility and the sludge is settled to thereby simultaneously remove oil and sludge. will be.

Generally, a water treatment apparatus for treating wastewater is removing a pollutant through a series of processes in order to purify various wastewater including plant wastewater and household wastewater.

In a typical water treatment apparatus, a settling tank and a pressurized floating tank are usually installed to remove contaminants from the wastewater.

The sedimentation tank is a device for separating and removing contaminants such as sludge by using the difference in specific gravity between water and contaminants. Although it is simply sedimented by gravity, most flocculants are injected to form floc, Acceleration reduces the settling time.

The pressurized flotation tank is a device that removes relatively light contaminants such as oil among the contaminants in the wastewater by floating them on the surface of the water. The pollutants float to the surface due to the difference in specific gravity, and the scum collected in the scum collector is discharged through a separate pipe.

This pressurized floating tank is installed adjacent to the settling tank to remove the contaminants remaining in the primary treated wastewater in the settling tank. After the settling process, the float process is followed and the contaminants contained in the wastewater are treated as primary And then separated by float, so that contaminants can be efficiently separated and removed.

However, since such a conventional water treatment system requires a separate settling tank and a floating tank to be installed on the ground, a large site area is consumed, which wastes land, increases the installation cost, and has a disadvantage that the process time is also long.

Korean Patent Publication No. 10-2015-0029938: Water Treatment Device

The present invention has been made to solve the above problems, and provides a water treatment tank having flotation and settling functions capable of simultaneously removing oil and sludge by flooding oil contained in wastewater and precipitating sludge in one facility It has its purpose.

In order to achieve the above object, the present invention provides a water treatment tank having a floating and settling function, comprising: a main body including a cylindrical main body; a conical portion formed at a lower portion of the main body and having an inner space gradually narrowed; A processing target infusion inlet extending from the outside of the main body to the inside of the main body so that water to be treated can flow into the main body; A cylindrical first sub-tank installed in the main tank and provided at a position corresponding to the end of the infant inlet to be treated, the inflow from the lower portion of the treatment target water discharged from the infant inlet for treatment to form an upward flow; And the upper and lower ends are formed higher than the upper and lower ends of the first sub-tank, and the water to be treated, which flows over the upper end of the first sub-tank, flows into the lower sub- A cylindrical second sub-tank; A process water inflow section provided on an inner surface of the main tank and forming a process water inflow space through which the treated water having contaminants removed through the second sub tank is floated; And a process water discharge pipe installed in the main body to be connected to the process water inflow space and discharging the process water to the outside.

And a widening portion is formed at a lower portion of the first sub-tank so as to be gradually expanded outward and open toward the end of the infant inlet for treatment.

And a bent portion formed to be bent toward the widening portion is formed at an end of the infant inlet for treatment.

And a vortex forming portion for forming a vortex in the water to be treated is provided inside the object to be treated.

And a bubble supplying unit connected to the end of the infusion inlet for the purpose of injecting the minute bubbles into the target infusion inlet.

And a heat exchanger installed at a lower portion of the first sub-tank to regulate a temperature of water to be treated discharged through the infant to be treated.

The process water overflow inlet includes a horizontal member formed along the circumference of the inner circumferential surface of the main bath, and a vertical member vertically formed at one side of the horizontal member and having concave and convex portions formed at the top thereof.

And a scum removing means for removing scum floating on the water surface of the second sub tank.

The motor is installed on a support plate supported on an upper portion of the main body, a rotating member connected to the motor and horizontally installed inside the second sub-tank and positioned above the first sub-tank, A scum collecting unit installed between the first sub tank and the second sub tank to form a space into which the scum rolled by the rotating member flows, and a scum discharging pipe connected to the scum collecting unit and extending to the outside of the main body do.

As described above, since the precipitation and the float occur simultaneously in one tank, the oil contained in the wastewater can float and the sludge can be settled, thereby simultaneously removing oil and sludge. Therefore, the present invention can significantly shorten the processing time required for sedimentation and floatation compared with the conventional water treatment system, and can be installed in a small scale, thereby reducing the area of the treatment plant and providing an economical advantage .

In addition, the present invention eliminates the need for a separate stirring device or a dilution tank for adjusting the pH and mixing the flocculant, because the vortex forming part can be installed in the inflow inlet for the treatment to separate the sludge and the oil. In addition, the present invention can improve the lifting speed by using the buoyancy of the ultra-fine grains by injecting the ultra-fine grained bodys into the milk feeding entrance.

In addition, the present invention provides a method for removing odor, algae, oil and grease, synthetic detergent, iron and magnesium which are not removed by the conventional sedimentation and flotation method, and is particularly excellent in removing trace organic contaminants such as volatile organic pollutants and sludge It is possible to efficiently remove the adsorbed organic components.

1 is a cross-sectional view of a water treatment tank having a floating and settling function according to an embodiment of the present invention,
Fig. 2 is an exploded perspective view showing the inside of the main body applied to Fig. 1,
3 is a cross-sectional view of a recess according to another embodiment of the present invention,
FIG. 4 is a perspective view illustrating an essential portion according to another embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a water treatment tank having a floating and settling function according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the water treatment tank of the present invention includes a main body 10, a milk feeding inlet 60 to be treated, a first sub tank 30, a second sub tank 20, A flow portion 50, and a process water discharge pipe 70.

The main body 10 includes a main tank 11 and a conical portion 15 formed at a lower portion of the main tank 11 and having an inner space gradually narrowed.

The main tank 11 is formed into a cylindrical shape having upper and lower openings. The conical portion (15) is formed at the lower portion of the main tank (11). The conical portion 15 is formed so that its inner diameter becomes smaller as it goes downward, so that the inner space gradually narrows. At the lower end of the cone portion 15, an outlet 17 is formed so that the settled sludge can be discharged.

A support leg (1) is provided under the main body (10). The support leg 1 fixes the main body 10 at a position spaced from the ground by a certain distance. A reinforcing bar (5) is provided between the support leg (1) and the conical portion (15).

The object 60 to be treated extends horizontally from the outside of the body 10 to the inside. The object to be treated flows into the main body 10 through the infant inlet 60 to be treated. The treatment target number means sewage or wastewater to be purified.

Preferably, a bent portion 61 is formed at an end of the object 60 to be treated. That is, the bent portion 61 is formed so as to be bent upward, so that the discharge port of the infant inlet 60 to be treated faces the narrowed portion 35 to be described later. This is to induce the flow of the object to be processed to the upward flow.

The bubble supplying unit 80 may be connected to the end of the infusion inlet 60 to be treated, that is, to the bending portion 61.

The bubble supplying unit 80 injects minute bubbles into the infant inlet 60 to promote floatation of the float.

The illustrated bubble supply unit 60 includes a water supply pipe 81 for supplying water, an air supply pipe 83 connected to the water supply pipe 81 and a water supply pipe 81 connected to the air supply pipe 83, A pump 87 connected to the suction port side for sucking the water into which the air is introduced and discharging the water to the discharge port, a pump 87 connected to the discharge port of the pump 87, (89) extending into the interior of the housing (10). The connecting pipe 89 extending to the inside of the main body 10 is connected to the bent portion 61.

The water supply pipe 81 is provided with a valve 82 for opening and closing the flow path. Although not shown, the water supply pipe 81 is connected to the water tank or the groundwater pumping section to supply water. The air supply pipe 83 is connected to the suction-side water supply pipe 81 of the pump 87. A compressor 85 that generates compressed air as an air supply source for supplying air can be used. The air supply pipe 83 is provided with a valve 84, respectively.

When the valve 82 provided in the water supply pipe 81 is opened, water flows into the suction port of the pump 87 through the water supply pipe 81. At this time, air is introduced into the water flowing into the pump 87 through the air supply pipe 83. The water and air introduced into the pump 87 are finely crushed by the rotation of the impeller inside the pump 87, and fine bubbles are generated in the water. The generated bubbles are ultrafine bubbles having a size of nano- or micro-level that is 50 탆 or less, that is, 0.01 to 50 탆 in size, which is hard to be visually recognized. The bubble water mixed with the ultrafine bubbles flows into the water to be treated through the connecting pipe 89.

Meanwhile, as shown in FIG. 3, a vortex forming portion 63 for forming a vortex in the water to be treated may be installed inside the object 60 to be treated. This is so that the number of objects to be treated can be mixed well within the object 60 to be treated. The flocculant can be injected into the water to be treated flowing along the inflow inlet 60 to be treated for flocculation of the sludge. In this case, the vortex forming portion 63 allows mixing of the flocculant and the water to be treated well.

Further, the oil adsorbed on the sludge can be easily separated from the sludge in the course of passing through the vortex forming portion.

A base rod 65 formed to have a predetermined length and a wing portion 67 formed in a spiral shape on the outer peripheral surface of the base rod 65. [

A first sub tank (30) and a second sub tank (20) are installed in the main body (10). A cylindrical second sub tank 20 is provided in the main tank 11 so as to be spaced from the inner peripheral surface of the main tank 11 and the second sub tank 20 is spaced apart from the inner peripheral surface of the second sub tank 20. [ 20, a cylindrical first sub-tank 30 is provided. The first and second sub tanks 30 and 20 and the main tanks 11 are installed concentrically with the same center.

The first sub tank 30 is installed at the central portion of the main tank 11. The first sub tank 30 is provided at a position corresponding to the end of the target infusion tube 60 to be treated.

The lower portion of the first sub tank 30 is formed with a widening portion 35. The expanding portion 35 has a shape gradually expanding outwardly of the first sub-tank as it goes downward. The widening portion 35 has a structure that is opened toward the bent portion 61 formed at the end portion of the infant inlet 60 to be treated.

The water to be treated discharged from the target infusion tube 60 flows into the first sub tank 30 through the narrowing part 35. [ The number of the processing target moves upward in the lower portion of the first sub-tank 30 and forms an upward flow inside the first sub-tank 30.

A precipitation inducing plate 31 for inducing sedimentation of sludge may be installed in the first sub tank 30. The precipitation inducing plate 31 may be formed of a synthetic resin such as polyethylene or a network structure of a metal material resistant to corrosion such as stainless steel. In addition, the precipitation inducing plate may be formed of an Eskine-bent type, an E-shaped wing or an egg-shaped elliptical shape. The shape of the precipitate induction plate widens the contact area with the water to be treated as much as possible, so that the material having a large specific gravity can not be lifted up to the upper part due to the resistance.

The heavy sludge contained in the water to be treated discharged through the infant inlet 60 to be treated sinks downward but the relatively light sludge moves upward along the flow of the water to be treated. The sludge moving upward along the flow of the water to be treated collides with the sedimentation inducing plate 31 and sedimentation is induced.

The second sub tank 20 is formed into a cylindrical shape. The second sub tank 20 is disposed between the main tank 11 and the first sub tank 30 so as to be spaced apart therefrom. The upper and lower ends of the second sub tank 20 are formed higher than the upper and lower ends of the first sub tank 30. [ The number of the processing objects overflowing the upper end of the first sub tank 30 flows into the space between the second sub tank 20 and the first sub tank 30 to form a downward flow. At this time, the sludge contained in the water to be treated is precipitated by the specific gravity and settled in the lower part of the main body 10.

The treated water, that is, the treated water from which the sludge has been removed while passing through the second sub tank 20 floats into a space between the main tank 11 and the second sub tank 20. [

The process water overflow inlet 50 is provided on the inner surface of the main tank 11. [ The process water overflow inlet 50 forms a process water inflow space 55 into which the process water floats and flows.

The process water overflow inlet 50 includes a horizontal member 51 formed along the periphery of the inner circumferential surface of the main tank 11 and a vertical member 53 vertically formed at one side of the horizontal member 51, Respectively. The concavities and convexities shown are formed in a sawtooth shape.

 The treated water floated by forming an upward flow in the space between the main tank 11 and the second sub tank 20 flows into the treated water inflow space 55 over the upper end of the vertical member 53.

The treated water flowing into the treated water inflow space 55 is discharged to the outside of the main body 10 through the treated water discharge pipe 70. The process water discharge pipe 70 is installed in the main tank 11 so as to be connected to the process water inflow space 55.

The present invention may further comprise a suspend material removing means for removing suspended objects floating on the water surface of the second sub tank 20. [

The suspended matter in the treatment water flowing into the first sub tank 30 floats up and floats on the water surface. The floats floating on the water surface spread around the water surface and are distributed throughout the inner water surface of the second sub-tank 20.

The float removing means includes a motor 90 mounted on a support plate 9 supported on an upper portion of the main body 10 and a motor 90 connected to the motor 90 and horizontally installed inside the second sub- A rotating member 91 positioned above the tub 30 and a space provided between the first sub tank 30 and the second sub tank 20 to allow the floating matter tilted by the rotating member 91 to flow therein And a float discharge pipe 95 connected to the float collecting unit 93 and extending to the outside of the body 10.

When the rotary member 91 rotates by the driving of the motor 90, suspended matters such as oil floating on the water surface of the second sub tank 20 flow into the suspended particle collecting unit 93, Is discharged to the outside of the main body (10) through the scum discharge pipe (95).

1 and 2, a reference numeral '5' denotes a first fixing bias for fixing the first subjoil to the inner side of the second subjoil, and a reference numeral 6 denotes a second fixed suboil to fix the second suboil to the inside of the main tank And is a second fixed pot.

In another embodiment of the present invention, as shown in FIG. 4, a heat exchanger (not shown) installed at the lower portion of the first sub-tank 30 for controlling the temperature of water to be treated discharged through the infant- 100).

Referring to FIG. 3, the heat exchanger 100 is installed at a lower portion of the expansion portion 35. Inside the heat exchanger, a heat exchange medium for transferring heat to the water to be treated flows. Steam or refrigerant may be applied as the heat exchange medium. The heat exchanger is connected to a refrigeration cycle which supplies a boiler or cold refrigerant that generates steam.

The number of objects to be treated can be controlled at a temperature suitable for activation of microorganisms in winter or summer through the heat exchanger 100 described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

10: Main body 11: Main tank
20: second sub-tank 30: first sub-tank
31: precipitation induction plate 50: treated water overflow inlet
60: subject to be treated Milk inlet 70: treated water outlet pipe
80: bubble supply unit 90: motor
91: Rotating member

Claims (9)

A main body including a cylindrical main body and a conical portion formed at a lower portion of the main body and having an inner space gradually narrowed;
A processing target infusion inlet extending from the outside of the main body to the inside of the main body so that the object water can be introduced into the main body;
A cylindrical first sub-tank installed at the inner center of the main tank and provided at a position corresponding to the end of the infant inlet to be treated, the inflow of inflow from the lower portion of the first sub-
And the upper and lower ends are formed higher than the upper and lower ends of the first sub-tank, and the water to be treated, which flows over the upper end of the first sub-tank, flows into the lower sub- A cylindrical second sub-tank;
A process water inflow section formed along the inner circumferential surface of the main bath to form a process water inflow space through which the treated water having contaminants removed through the second sub tank is floated;
And a process water discharge pipe installed in the main body to be connected to the process water inflow space and discharging the process water to the outside,
A widening portion is formed in the lower portion of the first sub tank so as to gradually expand outward so as to open toward an end portion of the infant inlet for treatment,
And a bending portion formed to be bent upward toward the widening portion is formed at an end of the object to be treated inflow so as to guide the flow of the water to be treated discharged from the infant inlet to be treated to an upward flow. Water treatment tank. delete delete The water treatment tank as claimed in claim 1, wherein a vortex forming portion for forming a vortex in the water to be treated is provided inside the treatment target infusion inlet. The water treatment tank as claimed in claim 1, further comprising a bubble supplying unit connected to an end of the inflow inlet for treatment to inject minute bubbles into the treatment target infusion inlet. The water treatment system according to claim 1, further comprising a heat exchanger installed at a lower portion of the first sub-tank to regulate the temperature of the water to be treated discharged through the infant inlet to be treated, article. 2. The water treatment system according to claim 1, wherein the treated water overflow inlet comprises a horizontal member formed along a circumference of an inner circumferential surface of the main bath, and a vertical member vertically formed at one side of the horizontal member, And a water treatment tank having a sedimentation function. The water treatment tank according to claim 1, further comprising a float removing means for removing floats floating on the water surface of the second sub tank. [Claim 10] The apparatus according to claim 8, wherein the scum removing means comprises: a motor installed on a support plate supported on an upper portion of the main body; a motor connected to the motor and horizontally installed inside the second sub- A float collecting unit installed between the first sub tank and the second sub tank and forming a space into which the floating water tapped by the rotating member flows, Characterized in that it has a float discharge pipe extending therefrom.

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