KR102085905B1 - The pressurized flotation tank for the wastewater treatment using the swirl plate - Google Patents

Abstract

The present invention provides a pressure floatation tank for wastewater treatment, which includes: a wastewater treatment main body (100) having an inlet (101) of wastewater and a treatment water discharge tank (102) in the front and rear parts of the treatment tank; a floating sludge collector (120) installed on the upper part of the treatment tank; and a microbubble generating device (130) supplying microbubbles to the inlet (101) of the treatment tank. The treatment tank includes any one or more of a first vortex plate (140a) installed on the inner surface of the inlet (101) for the vortex of a water flow, a second vortex plate (140b) receiving the water flow of the inlet (101) or the first vortex plate (140a) to vortex, and a third vortex plate (140c) installed on the upper surface of the treatment tank, receiving an ascending stream of water and sending the same back with vortex to the rear side. The first vortex plate (140a), the second vortex plate (140b), and the third vortex plate (140c) have any one or at least two combinations of a 1-shaped blade (142), a reversed L-shaped blade (143), and a T-shaped blade (144) in order to have a plurality of vortex paths (145). The vortex flows of water stream coming back from each vortex plate are mixed with each other in various forms and further improve the micro bubble dissolution rate of wastewater by differently forming the lengths of the 1-shaped blade (142), the reversed L-shaped blade (143), and the T-shaped blade (144) protruding from the substrate (141).

Description

The pressurized flotation tank for the wastewater treatment using the swirl plate}

The present invention relates to a pressurized flotation tank for wastewater treatment using a vortex plate, and more particularly, to increase the dissolution rate of the microbubbles by vortexing the wastewater introduced at various places in the treatment tank through the wastewater inlet of the treatment tank. The present invention relates to a pressurized flotation tank for wastewater treatment using a vortex plate, which can increase the floating efficiency of the suspended matter as much as possible.

In general, wastewater, including sewage from households or business places, and various wastewater and wastewater (hereinafter referred to as 'wastewater') discharged from pollution at factories and livestock farms of various industrial sites are discharged as they are. Of course, it has become a major cause of soil and air pollution.

In order to purify the water quality of the wastewater, the solids contained in the wastewater must be separated or separated from the water by using the wastewater treatment system.The separated water is discharged after chemical treatment, and the sludge collected and collected and sent to the landfill site is landfilled. Or incinerators.

Apparatus for the wastewater treatment is a sedimentation tank, oil water separator, flotation tank.

The settling tank is a solid / liquid separation device that removes the material heavier than water in the wastewater by sedimenting the lower part of the treatment tank.

The oil / water separator is a device that separates water from water by using a self-floating force of a material (naturally injured) that is lighter than water, such as oil, in the wastewater.

The flotation tank is a solid / liquid separation device that lifts and removes the lighter than water from the foreign matter contained in the waste water to the upper of the treatment tank, by injecting microbubbles into the wastewater flowing from the flotation tank by using the flotation force of the bubble Increasing the efficiency of flotation is called pressure injury.

However, in the conventional flotation tank, when the wastewater introduced into the treatment tank is moved backwards in the treatment tank, the foreign matter floats in the horizontal direction without clogging. Therefore, the flotation efficiency of the sludge is lowered, and the pressurization for injecting microbubbles into the wastewater is applied. Floating roughness microbubble alone has low floating efficiency, so the facility size must be excessively large in order to increase throughput, which requires a lot of manufacturing and maintenance costs.

Prior art for solving this problem is a vertical guide plate type pressurization using the water flow space flow of the wastewater treatment device of the Republic of Korea Patent Publication No. 10-2012-0068327 (published on June 27, 2012) Sasangjo '(hereinafter referred to as' prior art 1').

The prior art 1, the vertical space flow guide portion consisting of a plurality of vertical guide plate between the water distribution panel, and installed in the bottom of the isolated water control tank in the rear of the waste water treatment tank by installing a water flow control pipe that is opened and closed by a valve The flow distribution panel and the vertical guide plate change the flow of the water to the vertical flow evenly, while slowing the flow of the water to increase the efficiency of the foreign matter by securing sufficient floating time of the foreign matter.

Another prior art is a "current dispersion type pressure flotation tank" of the Republic of Korea Patent No. 10-1455180 (2014.10.27.) (Hereinafter referred to as "prior art 2").

According to the prior art 2, according to the inflow amount of the wastewater or the concentration of the wastewater, it is possible to easily adjust the uniform distribution and flow rate of the inflow wastewater at an optimum suitable speed to obtain a sufficient mixing effect and floating effect to increase the treatment efficiency of the wastewater, It is easy to cope with fluctuations in wastewater, and even though both the water flow dispersion control unit and the space flow guide unit are provided inside, the size can be compact and there is not much restriction on securing the installation space.

Korean Patent Application Publication No. 10-2012-0068327 (June 27, 2012) discloses 'vertical induction plate type pressurization tank using water flow space flow in the wastewater treatment system' Republic of Korea Patent Registration No. 10-1455180 (2014.10.27.) "Water Dispersion Type Pressure Flotation Tank"

Since the prior arts 1 and 2 are both micro-bubbles injected in the state in which the water dispersion panel and the vertical guide plate in the treatment tank changes the flow of the wastewater into a straight stream moving smoothly and slowly, and dissolves in the wastewater. Even if the pressurized microbubble is injected, its dissolution rate is low, and thus there is a problem in that floating efficiency cannot be increased.

The present invention has been developed to solve the problems of the prior art, an object of the present invention is to vortex the waste water in various places of the treatment tank when the waste water and the microbubbles are introduced through the inlet of the treatment tank to increase the dissolution rate of the microbubble very much Therefore, the present invention provides a pressurized floatation tank for wastewater treatment using a vortex plate which can increase the floating efficiency of the suspended matter as much as possible.

Another object of the present invention can be manufactured in a compact size of the flotation tank as the dissolution rate of waste water and micro-bubble is increased, it is easy to secure the installation space, using a vortex plate that can reduce the maintenance cost according to the manufacturing cost and operation The present invention provides a pressurized floatation tank for wastewater treatment.

The object of the present invention is the wastewater treatment body is provided with a wastewater inlet and a treatment water discharge tank in front and rear of the treatment tank; Floating sludge collector installed in the upper portion of the treatment tank; A microbubble generating device for supplying microbubbles to the inlet of the treatment tank; forming a pressurized floatation tank for wastewater treatment; a first vortex plate installed on the inner surface of the inlet to vortex the water flow flowing into the inlet; A second vortex plate for vortexing the flow of water flowing in the first vortex plate; A third vortex plate installed in front of the upper surface of the treatment tank and vortexing the flow of vortex flow toward the rear of the treatment tank; It can be achieved by providing any one or two or more of them to increase the rate of dissolution of microbubbles in the waste water.

In addition, the first vortex plate to the third vortex plate is provided with a plurality of vortex passages by combining any one or two or more of the '1'-shaped blade, the' a'-shaped blade, the 'T'-shaped blade, and have different lengths. When the vortex flows of the water streams hitting each vortex plate and mixed with each other in various forms are installed, the dissolution rate of the microbubbles can be further enhanced, and the above object can be effectively achieved.

As such, the present invention is that when the wastewater and the microbubble flows in through the wastewater inlet of the treatment tank, the wastewater is vortexed by changing the direction of the flow of the water in front of the treatment tank or in various places of the front treatment tank by the first to third vortex plates. Accordingly, since the rate of dissolution of the microbubbles is considerably higher, there is an excellent effect of removing the suspended solids by increasing the floating efficiency of the suspended solids.

In addition, since the dissolution rate of the fine bubbles is increased as described above, the treatment efficiency of the suspended matter is increased, so that the size of the floating tank can be manufactured in a compact size, thereby ensuring easy installation space, and reducing manufacturing and maintenance operation costs.

1 is a schematic diagram showing, as an example, the structure of a pressure injured tank in which the present invention is implemented
Figure 2a is a perspective view showing an example of the first vortex plate of the present invention
FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A
3 is a perspective view showing an example of the second vortex plate of the present invention;
4 is a perspective view showing an example of the third vortex plate of the present invention;

Hereinafter, with reference to the accompanying drawings as a preferred embodiment of the present invention will be described in detail.

1 is a view schematically showing the structure of the pressure relief tank according to the present invention, Figure 2a is a perspective view showing an example of the first vortex plate of the present invention, Figure 3 is a perspective view showing an example of the second vortex plate of the present invention as an example 4 is a perspective view showing an example of the third vortex plate of the present invention.

Pressurized floatation tank of the present invention shown in the waste water treatment body 100, the flotation sludge collector 120, microbubble generating device 130, the first vortex plate 140a, the second vortex plate 140b, the third vortex It is comprised by the board 140c.

The wastewater treatment body 100 is provided with an inlet 101 of wastewater in front of the treatment tank, and is provided with a treatment water discharge tank 102 at the rear.

The flotation sludge collector 120 is installed in the upper part of the treatment tank of the wastewater treatment body 100. Since the flotation of the floating material is made mostly in the rear of the treatment tank, the treatment tank has a single structure. 120 is installed, the treatment tank is a multi-structure divided into the front treatment tank (110a) and the rear treatment tank (110b), the flotation sludge collector 120 is installed on the upper portion of the rear treatment tank (110b).

The microbubble generating device 130 is a device for generating microbubbles to supply the microbubbles in the wastewater flowing into the inlet 101 of the treatment tank.

The first vortex plate 140a is installed at the upper end of the inner surface of the inlet 101 into which the wastewater flows into the treatment tank, and the tip is inclined at an angle so that the stream of water flows by colliding with the wastewater introduced from the inlet 101. It is installed in a bent form.

The second vortex plate 140b is installed at a predetermined interval away from the inlet 101. If there is no first vortex plate 140a, the second vortex plate 140a directly receives the flow of water introduced from the inlet 101 and vortexes toward the front and the upper side of the treatment tank. When the first vortex plate 140a is provided together, the vortex flow flowing back from the first vortex plate 140a is vortexed and sent back to the front and the upper side of the treatment tank.

The third vortex plate 140c vortexes the flow of water that rises to the upper surface of the treatment tank and sends it to the rear side of the treatment tank.

The first vortex plate 140a, the second vortex plate 140b, and the third vortex plate 140c may be provided with only one of the three to perform the vortex of the water flow once, or two or more than two If you install the vortex flow flow proceeds two or three times in succession, the more the number of vortices, the rapid mixing of the fine bubbles is made better.

Thus, in the present invention, when the wastewater and the microbubbles are introduced together through the inlet 101 of the treatment tank, the vortices of the water flow by the first vortex plate 140a to the third vortex plate 140c once or twice or three times. Since the process proceeds to the desired number of times, the rate of dissolution of air in the microbubble is increased in the waste water. It is preferable that all the boards 140c are installed.

In this case, the third swirl plate 140c may be installed at an angle to the rear side when the treatment tank has a single structure and at an angle suitable for vortexing the flow of water toward the rear treatment tank 110b in the case of the multiple structure. .

The first vortex plate 140a to the third vortex plate 140c are installed in the front side of the treatment tank when the treatment tank of the wastewater treatment body 100 has a single structure, and the front treatment tank 110a and the rear treatment tank ( In the case of the multiple structure divided by 110b), it is preferable to provide both the first vortex plate 140a to the third vortex plate 140c in the front treatment tank 110a.

Then, the floating of floating materials in the rear side or the rear treatment tank 110b in which the sludge collector 120 is installed may flow smoothly by the flow of water in the state in which the dissolution rate of the fine bubbles is increased in the front treatment tank 110a. The collection of flotation sludge is very rapid.

Here, reference numeral 150 in the drawings is a water flow dispersion portion for distributing the flow of water flow control and the flow of water consisting of a porous plate, 160 overlapping the wave-shaped inclined plate spaced apart at regular intervals It is a water flow guide part to guide the water flow through the space.

The water flow guide unit 160 may be installed at the rear side of the treatment tank when the treatment tank has a single structure, and may be installed at the rear treatment tank 110b when the treatment tank has a multiple structure.

In the present invention, the first vortex plate 140a to the third vortex plate 140c may form a vortex by themselves as the substrate 141 on which the stream of water flows. However, as shown in FIGS. It is preferable to install a plurality of blades upright to form 145.

In addition, as shown in the cross-sectional view of FIG. 2B, the blade may be installed in any one of the '1'-shaped blade 142, the' A'-shaped blade 143, and the 'T'-shaped blade 144, but a combination of two or more is installed. It is more preferable to do.

At this time, the first vortex plate 140a, the second vortex plate 140b, and the third vortex plate 140c may have a '1' shaped blade 142 protruding from the substrate 141, a 'a' shaped blade 143, The length of the 'T'-shaped blade 144 may be configured differently.

That is, the first vortex plate 140a for inducing wastewater inflow downward as shown in FIG. 1 has the shortest length of each blade protruding from the substrate 141, and the second vortex plate 140b in which the wastewater introduced downward flows. When the length of each blade is the longest, the third vortex plate (140c) for sending the flow of water to the rear is formed in the middle length than the first vortex plate (140a) and the second vortex plate (140b) to each vortex plate Since the vortex flows of the streams hitting and returning are made in various forms and mixed together, the microbubble dissolution rate of the wastewater can be further enhanced.

The present invention is a '1' shaped blade 142, 'a' shaped to be installed on the substrate 141 of the first vortex plate 140a, the second vortex plate 140b, and the third vortex plate 140c, respectively. The length of the blade 143 and the 'T'-shaped blade 144 may be differently installed.

Then, the flow of water flowing through the vortex flow plate 145 hitting the vortex plate is vortexed in various different forms and mixed with each other, so that the mixing dissolution rate of the micro bubbles can be improved, so that the floating force of the floating material can be greatly increased. .

In addition, when the treatment tank has a multiple structure, the substrate 141 of the second swirl plate 140b may directly install the blades by using the side wall of the front treatment tank 110a as a substrate.

As such, when the wastewater and the microbubbles are introduced together through the inlet 101 of the treatment tank, the present invention is provided at various places in the front or the front treatment tank 110a by the first vortex plate 140a to the third vortex plate 140c. A variety of forms of vortex flow can be obtained.

Therefore, it is possible to considerably increase the dissolution rate of microbubbles, which greatly increases the floating force of floating materials and removes the floating materials.In addition, when the efficiency of processing of floating materials in treatment tanks is increased, the size of the floating tanks can be manufactured in a compact size to secure installation space. It is easy to reduce the cost of manufacturing and maintenance.

100: wastewater treatment body 101: inlet
102: treatment water discharge tank 110a: front treatment tank
110b: after treatment tank 120: flotation sludge collector
130: microbubble generating device 140a: first vortex plate
140b: second vortex plate 140c: third vortex plate
141: substrate 142: '1' shaped blade
143: 'a' blade 144: 't' blade
145: vortex passage 150: water flow dispersion unit
160: water flow guide part

Claims (4)

A wastewater treatment body 100 having a wastewater inlet 101 in front of the treatment tank and a treatment water discharge tank 102 at the rear thereof;
Floating sludge collector 120 is installed on the upper portion of the treatment tank to collect the floating floating material;
A microbubble generating device 130 for supplying microbubbles to the inlet 101 of the treatment tank by generating microbubbles;
A first vortex plate 140a having a tip end inclined toward the inlet 101 at an upper end of the inner surface of the inlet 101 to vortex the flow of water flowing into the treatment tank through the inlet 101;
A second vortex plate 140b installed to be spaced apart from the inlet 101 to receive the water flow introduced from the inlet 101 and vortex toward the front of the treatment tank;
A third vortex plate 140c installed obliquely on an upper surface of the treatment tank to receive the flow of water and vortex it to the rear side of the treatment tank; silver
A plurality of vortex passages 145 are provided by combining any one or two or more of the '1'-shaped blade 142, the'-'- shaped blade 143, and the 'T'-shaped blade 144,
The length of the '1' shaped blade 142, 'a' shaped blade 143, 'T' shaped blade 144 protruding from the substrate 141 is configured differently
Pressurization for wastewater treatment using a vortex plate, characterized in that the vortex flow of the water stream coming back to each vortex plate is mixed with each other in various forms to further improve the dissolution rate of microbubbles in the wastewater.
The method of claim 1,
The first vortex plate 140a to the third vortex plate 140c,
If the treatment tank of the wastewater treatment body 100 is a multiple structure divided into a front treatment tank (110a) and a rear treatment tank (110b) to be provided in both the front treatment tank (110a)
Pressurized flotation tank for wastewater treatment using a vortex plate, characterized in that the flow of water flows in the state in which the dissolution rate of the microbubbles in the front treatment tank (110a) is increased.
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