KR101892942B1 - Settling Basin For Water Treatment - Google Patents

Abstract

The present invention relates to a settling tank for water treatment. The settling tank includes a rectifying cylinder unit having a turbulence prevention plate formed with perforated holes; a rectifying barrel unit having perforated holes; a rising unit on the outer side of a rectifier which can be provided with a slope plate or a filter medium layer; and a floating material separating partition preventing floating materials from passing through an overflow ware.

Description

{Settling Basin For Water Treatment}

The present invention relates to a settling tank for water treatment, and more particularly, to a settling tank having a rectifying cylinder portion provided with a turbulence prevention plate formed with a perforation and a rectifying flow field portion formed with a perforation, and discharging sludge floated in the settling tank upper portion.

A sedimentation tank is a tank for separating solids and liquid by sedimenting suspended solids in water using a density gradient for the treatment of polluted water. Generally, gravity is used, and when a flocculant is added to a pollutant contained in contaminated water to react the pollutant with a flocculant to form flocs, the floc may be precipitated.

The rectifier in the settler replaces the flow of water into the settler from turbulence to laminar flow to increase sedimentation effect. Conventional sedimentation tanks have been used to change the shape of the rectifying column in order to increase the sedimentation effect. In order to effectively treat the contaminated water, it is necessary to develop sedimentation tanks having better sedimentation performance.

In addition, floating water such as scum may be contained in the water to be treated which rises through the rectifier, and it is necessary to effectively prevent such floating material from being discharged to the discharge pipe through the overflow ware.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the problems as described above, and it is an object of the present invention to provide a turbulence prevention plate in which a rectifying cylinder in a settling tank is divided into a rectifying cylinder portion and a rectifying flow- In order to maximize the sedimentation efficiency and to increase the settling velocity of the pollutants by removing the turbulence, it is necessary to effectively remove the floating substances contained in the treatment target water by installing the floating material separating barriers and the sludge removing pipe at the upper part of the sedimentation tank And to provide a sedimentation tank that can be used.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a sedimentation tank including a sedimentation tank in which contaminants contained in polluted water are settled; And a rectifying cylinder including a rectifying cylinder portion having at least one turbulence preventing plate formed with a perforation therein and a rectifying flow passage formed with a perforation.

Also, the pore of the rectifying and communicating portion may gradually increase in size from the upper portion of the rectifying portion to the lower portion of the rectifying portion.

In addition, the pores formed in the at least one turbulence prevention plate may have a smaller pore size than the pores of the upper turbulence prevention plate.

In addition, the sedimentation can be composed of a case made of a circular or rectangular shape, and a sediment collecting part having a shape in which the sectional area becomes narrower toward the lower part and the sediment discharge pipe is provided at the lower end.

In addition, it is preferable that a filter material layer filled with a swash plate or a filter material is used as a rising portion outside the rectification bar between the rectifying fluid passing through the settling passage, and the filter material layer is composed of pumice, crushed stone, sand, anthracite, activated carbon, It can be composed of more than one layer.

Further, a pair of floating-material separating barriers provided on the upper portion between the sediment-passing rectifying cylinder portions; A discharge pipe covering an upper portion of the floating material separating wall; And a floating material discharge pipe installed in the inner space formed by the floating material separating barriers and the discharge pipe.

In addition, the floating material partition wall may be formed of at least one partition wall, and may have a constant slope.

In addition, the floating material discharge pipe may have at least one piercing hole.

Further, the overflow ware installed on the upper part between the settling and passing rectifier main body parts; And a discharge pipe for discharging the overflow water to be treated through the overflow ware.

The details of other embodiments are included in the detailed description and drawings.

The sedimentation tank according to the present invention provides an effect of increasing the sedimentation rate of the contaminant and increasing the sedimentation efficiency by reducing the turbulence by passing the treatment target water through the turbulence prevention plate provided with the pore provided in the rectifying cylinder portion.

In addition, a part of the water to be treated flowing below the rectifying and communicating portion exits over the rectifying and communicating portion through the rectifying portion, so that the flow of a part of the water to be treated changes from the downward flow or the upward flow to the upward flow, The direction of the water to be treated is prevented from suddenly changing from the downward flow to the upward flow at the lower end of the rectifying flow channel to prevent the turbulence, thereby increasing the sedimentation rate of the contaminant.

In addition, by providing the swash plate or the filter medium layer on the rising portion on the outside of the rectifier, the effect of precipitating the pollutants contained in the water to be treated, filtration of the fine particles, and extinguishing the dissolved organic substances is provided.

In addition, by providing a discharge pipe covering the floating material separating barriers and the upper part thereof, it is possible to automatically discharge the floating material contained in the treatment water through the discharge pipe by colliding with the discharge pipe while floating.

1 is a cross-sectional view of a settling tank according to an embodiment of the present invention.
2 is a plan view including the first turbulence prevention plate of the settling tank of FIG.
FIG. 3 is a plan view including the second turbulence prevention plate of the settling tank of FIG. 1; FIG.
Fig. 4 is a plan view including the rectifying flow passage of the settling tank of Fig. 1; Fig.
5 and 6 are side views of the settling tank of FIG.
7 and 8 are cross-sectional views of a sedimentation tank having inclined floating material partition walls according to an embodiment of the present invention.
Figure 9 is an external side view of the settling tank of Figure 1;
10 is a plan view of the settling tank of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and the following description. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises " and / or "comprising" as used herein are intended to mean that the stated elements, steps, operations and / or elements are not interchangeable with one or more other elements, steps, operations, and / And does not exclude the presence or addition thereof.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a settling tank according to an embodiment of the present invention.

1, the sedimentation tank according to the embodiment of the present invention includes a sedimentation tank 1, a rectifying column 3, a rectifying column outer side rising portion 15, a floating material separating partition wall 16, 17, overflow ware 21, and discharge pipe 22.

First, referring to Fig. 1, the structure of the sinker 1 will be described.

The sediment 1 adopted in the present embodiment is a place where the contaminants in the water to be treated are settled, and is composed of the upper case 10 and the lower sediment collecting part 9.

The case 10 has a receiving space therein and may have a circular or rectangular shape.

The sediment collecting unit 9 has a shape in which the contaminant contained in the water to be treated is settled by gravity sedimentation and has a shape in which the cross-sectional area becomes narrower as it goes down. A sediment discharge pipe 23 for discharging sediment to the lower end, Respectively. At least one of the sediment collecting units 9 may be installed, and the sediment collecting units 9 may be provided with the sediment discharging pipes 23 as many as the number of the sediment collecting units 9 installed therein.

Specifically, the sediment discharge pipe 23 is for discharging the sediment collected in the sediment collecting part 9 to the outside, and a sediment discharge valve or a pump for adjusting the amount of sediment to be discharged may be installed.

A vibrator 24 may be provided on the outer wall of the sediment collecting part 9 to facilitate sedimentation of the sediment trapped in the sediment trapping part 9. [ The vibrator 24 is installed in association with a vibrator support installed on the outer wall of the sediment trapping part 9 and vibrates the sediment trapping part 9 using ultrasonic waves, compressed air, rotational force, Can be disturbed and precipitated. At least one vibrator 24 may be installed in one of the sediment collecting units 9.

Next, the configuration of the rectifier 3 will be described with reference to Figs. 1 to 4. Fig.

As shown in FIG. 1, according to the present embodiment, the rectifying cylinder 3 is for introducing the introduced water to be treated downward, and is installed in a space inside the sinking furnace 1, A cylindrical portion 13, and a lower rectifying and operating portion 14.

The rectifying cylinder portion 13 is vertically formed in a top-to-bottom cross-section, and has one or more turbulence prevention plates 11 and 12 therein.

As shown in FIGS. 1 to 3, the turbulence prevention plates 11 and 12 have a semicircular shape with a concave upward cross section and a regular perforation of a predetermined size. The pores of the turbulence prevention plates 11 and 12 serve to prevent the turbulence that may occur according to the change of the flow rate of the water to be treated and the flowing direction by changing the flow of the incoming water to be treated from horizontal to vertical, The target number is received and distributed evenly to the bottom. The size of the perforations of the turbulence prevention plates 11 and 12 can be adjusted by adjusting the size of the perforations according to the quality of the water to be treated. At least one of the turbulence prevention plates 11 and 12 may be provided.

FIG. 2 is a plan view including the first turbulence prevention plate of the precipitation tank of FIG. 1, and FIG. 3 is a plan view including the second turbulence prevention plate of the precipitation tank of FIG.

2 and 3, the size of the perforation of the turbulence prevention plate 11 provided on the upper portion of the rectifying cylinder portion 13 is smaller than that of the turbulence prevention plate 12 provided below the rectifying cylinder portion 13, Is larger than the size

The cross section of the rectifying flow path portion 14 is inclined from the top to the bottom so that the width gradually increases toward the outside of the sinking trough 1. Due to such a shape, the volume is expanded and the density is reduced The flow rate is reduced. Further, the rectifying / communicating portion 14 has a perforation for preventing turbulence.

Fig. 4 is a plan view including the rectifying flow passage of the settling tank of Fig. 1; Fig.

Specifically, the piercing of the rectifying and purifying flow portion 14 is intended to disperse the force to be raised by the water head. That is, a part of the water to be treated flowing along the lower end face of the rectifying flow portion 14 flows out to the upper side of the upper end face of the rectifying flow portion 14 through the hole of the rectifying flow portion 14, The flow of some of them is changed from a downward flow or a plan flow to an upward flow. Accordingly, the force to increase the water to be treated at the lower end of the rectifying and purifying flow portion 14 is reduced, so that the flow does not change abruptly from the down stream to the up stream, so turbulence can be prevented.

As shown in FIG. 4, the pit of the rectifying flow portion 14 may be formed to have a different size from the upper portion of the rectifying flow portion 14 to the lower portion thereof desirable. This is because the force to increase the number of objects to be treated by the water head is larger at the lower portion than the upper portion of the rectifying operation portion 14. That is, the larger the size of the perforation of the rectifying flow passage portion 14, the greater the amount of the water to be treated flows out. Therefore, the perforation 14c in the lower portion of the rectification flow passage portion 14 is connected to the rectification flow passage portion 14 The upper surface of the perforation 14a is larger than the perforation 14a of the upper side so that the amount of water to be treated can be evenly dispersed by the water head.

Next, with reference to Fig. 1 again, the structure of the outer side rising portion 15 of the rectifying cylinder will be described.

1, the rectifying cylinder outer side rising portion 15 is formed in a space between the rectifying cylinder portion 13 and the case 10, and the swash plate 15a or And a filter layer 15b may be provided.

Figure 5 is a side view of the settling tank of Figure 1;

As shown in FIG. 5, the swash plate 15a is installed to prevent turbulence by regulating the movement path of the water to be treated, and to induce adsorption, flocculation and sedimentation of the floating sludge contained in the treatment target water. The swash plate 15a is supported by the swash plate side support rods connected to the inside of the case 10 and the swash plate lower support rods installed at the same height or higher than the lower end of the rectifying cylinder portion 13, The spacing can be adjusted. For example, the swash plate 15a may be installed at a predetermined angle and at an interval to equalize the movement path of the water to be treated.

Figure 6 is a side view of the settling tank of Figure 1;

As shown in FIG. 6, the filter material layer 15b is formed by filtering the fine particles contained in the water to be treated which has passed through the rectifier barrel 3, and to exhaust the dissolved organic substances contained in the water to be treated And a filter medium may be filled between the lower perforated plate for supporting the filter medium layer 15b and the upper perforated plate for preventing the filter medium layer 15b from flowing out. The filter material is composed of a single layer or more, and pumice, crushed stone, sand, anthracite, activated carbon and the like can be used.

Next, referring to Fig. 1 again, the structure of the floating-material partition wall 16 will be described.

The floating material separating partition wall 16 is installed to prevent the floating material contained in the water to be treated which has passed through the rectifying unit outer side rising part 15 from passing through the overflow ware 21, . As shown in FIG. 1, the floating material partition wall 16 (hereinafter, referred to as a 'first floating material partition wall') having an upper portion covered with the discharge pipe 22 to form a closed space Floating particles such as scum contained in the water to be treated are collected in a closed space formed by the first floating material separating partition wall 16 and the discharge pipe 22.

7 and 8 are cross-sectional views of a sedimentation tank having inclined floating material partition walls according to an embodiment of the present invention.

As shown in FIGS. 7 and 8, the first floating material separating partition wall 16a may be formed of at least one partition wall depending on the quality of water to be treated, and may have a constant inclination. This is to effectively contain bubbles when there is a lot of foam in the flotation material.

According to the embodiment of the present invention, in addition to the floating material partition wall 16 covered with the discharge pipe 22, the upper part of the floating material partition wall 18 forms an open space, ) (Hereinafter, referred to as a 'second floating material separation barrier'). The second floating material separating barrier rib 18 is provided in a space from the uppermost end of the floating portion 15 to the uppermost end of the case 10 to form a space in which the upper portion is opened together with the case 10 The floating microparticles such as scum included in the treatment target are collected in the open space formed together with the case 10 to prevent the floating microparticles from approaching the overflow ware 21 .

Next, the configuration of the floating material discharge pipe 17 will be described with reference to Fig.

The floating material discharge pipe 17 is for discharging the floating material to the outside of the settling tank of the present invention, and may be installed at least one. As shown in FIG. 1, a floating material discharge pipe 17 (hereinafter, referred to as a 'first floating material discharge pipe') installed in the closed space formed by the floating material separating partition wall 16 and the discharge pipe 22, The float material contained in the treatment target water floats on the discharge pipe 22 while being floated and is automatically discharged through the first floating material discharge pipe 17.

According to the embodiment of the present invention, another floating material discharge pipe 19 (hereinafter referred to as a 'second floating material discharge pipe') is provided in the space between the second floating material separating partition 18 and the case 10 ) Can be installed. The second floating material discharge pipe 19 is connected to one pipe to discharge floating material such as scum which can accumulate on the sedimentation tank.

Figure 9 is an external side view of the settling tank of Figure 1;

As shown in FIG. 9, a floating material discharge pipe 20 (hereinafter referred to as a 'third floating material discharge pipe') may be installed on the upper portion of the case 10 as well.

5, the above-mentioned floating-material discharge pipes may have at least one perforation 17a, and the perforations 17a of the floating-material discharge pipe 17 are formed so as to accumulate the floating material therebetween And may be installed at regular intervals.

In addition, the above-mentioned floating material discharge pipes can control the amount of floating material discharged by installing a floating material discharge valve, a floating material discharge pump and an air lift system for discharging floating material at the end of each pipe.

Next, the structure of the overflow weir 21 and the discharge pipe 22 will be described with reference to Fig.

The overflow weir 21 is designed to overflow over the top of the weir, even at normal times, and is arranged at regular intervals.

The discharge pipe 22 serves to discharge the water to be treated to the next process, and may be installed on the first floating material partition wall 16 so as to cover the first floating material partition wall 16, as described above.

Hereinafter, the operation and effect of the sedimentation tank of the present invention according to the above configuration will be described in detail.

First, in the settling tank according to the embodiment of the present invention, the object water flows into the rectifying cylinder unit 13, passes through the turbulence prevention plates 11 and 12 formed with pores, changes its flow horizontally to vertically, The turbulence is reduced while being evenly distributed.

The water to be treated which has passed through the rectifying cylinder portion 13 is reduced in flow velocity due to the shape of the rectifying flow portion 14 whose width gradually increases after passing through the rectifying flow portion 14 where the pore is formed, do. In addition, the number of objects to be treated does not change abruptly from the downward flow to the upward flow due to the puncture formed in the rectifying flow passage portion 14, thereby preventing the turbulence.

The number of times the turbulent flow is reduced, the effect of precipitation is maximized, and contaminants are collected in the sediment collecting part 9 of the sediment 1 and discharged to the outside through the sediment discharge pipe 23 .

The water to be treated past the rectifying and flowing section 14 passes through the rectifying section outer side rising section 15 and the swash plate 15a or the filter medium layer 15b is provided on the rectifying section outer side rising section 15. [ May be installed.

On the other hand, turbulence is reduced and contaminants are precipitated due to the swash plate (15a) or the filter material layer (15b) provided on the rising portion (15).

The water to be treated reaches the upper portion of the sediment 1 via the rising portion 15 of the rectifier tube and the floating material passes through the overflow ware 21 due to the floating material separating partition wall 16 And is discharged to the outside through the floating material discharge pipe (17).

The water to be treated, in which the contaminants have settled and the floating material has been removed, is discharged to the next process through the outflow pipe (22) through the overflow ware (21).

As described above, in the settling tank of the present invention, turbulence is reduced by passing through the turbulence prevention plates 11 and 12 formed with perforations provided in the rectifying cylinder unit 13, and the effect of increasing the settling velocity of contaminants is provided.

The swash plate 15a provided on the outer side rising portion 15 of the rectifying column 15 provides an effect of precipitating the contaminants contained in the water to be treated and is provided with the filter medium layer 15b provided on the outer side rising portion 15, Provides an effect of filtering the fine particles contained in the water to be treated and digesting dissolved organic matter.

Part of the water flowing below the rectifying flow portion 14 flows out of the rectifying flow portion 14 through the flow of the rectifying flow portion 14 so that a part of the water to be treated flows downward or in a planar direction So that the direction of the water to be treated at the lower end of the rectifying and communicating portion 14 is prevented from suddenly changing from the downward flow to the upward flow, thereby preventing the turbulence and thereby increasing the settling velocity of the contaminant do.

In addition, by providing the swash plate 15a or the filter medium layer 15b on the outer side rising portion 15 of the rectifying column 15, the effect of precipitating contaminants contained in the water to be treated, filtration of fine particles, and digestion of dissolved organic substances is provided .

In addition, by providing the floating material separating partition wall 16 and the discharge pipe 22 covering the upper part of the floating material separating wall 16, the floating material contained in the water to be treated collides with the discharge pipe 22 while being floated and is automatically discharged through the floating material discharge pipe .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by all changes or modifications derived from the scope of the appended claims and from the appended claims.

1: settling tradition 3: rectifier
9: Sediment collecting part 10: Case
11: first turbulence prevention plate 12: second turbulence prevention plate
13: rectifying cylinder part 14: rectifying cylinder part
14a: first rectifier pipe portion 14b: second rectifier pipe portion
14c: third rectifier pipe portion 15: rectifier outer side rising portion
15a: inclined plate 15b:
16: first floating material separation barrier 16a: inclined floating material separation barrier
17: 1st flotation material discharge piping 17a: 1st flotation material discharge piping
18: second floating material partitioning wall 19: second floating material discharge pipe
20: Third flotation material discharge pipe 21: Overflow ware
22: discharge pipe 23: sediment discharge pipe
24: The vibrator

Claims (9)

Sedimentation in which pollutants contained in polluted water settle;
A rectifying cylinder portion having at least one turbulence prevention plate formed with a perforation therein and a rectifying flowmeter formed with a perforation;
A pair of floating-material separating barriers provided on the upper portion between the sediment-passing rectifying cylinder portions;
A discharge pipe covering an upper portion of the floating material separating wall;
And a floating material discharge pipe installed in the inner space formed by the floating material separating barriers and the discharge pipe. The method according to claim 1,
And the pore of the rectifying and communicating part is gradually increased in size from the upper part of the rectifying and communicating part to the lower part of the rectifying part. The method according to claim 1,
Wherein the at least one pore formed in the turbulence prevention plate has a pore size smaller than that of the upper turbulence prevention plate. The method according to claim 1,
Wherein the sedimentation tank comprises a case made of a circular or rectangular shape, and a sediment collecting part having a shape in which the sectional area becomes narrower toward the lower part and the sediment discharge pipe is provided at the lower end. The method according to claim 1,
And a filter medium layer filled with a swash plate or a filter medium on the rising portion outside the rectification cylinder between the settling-
Wherein the filter medium comprises at least one layer. delete The method according to claim 1,
Wherein the floating-substance separating barrier comprises at least one partition wall and has a constant inclination. The method according to claim 1,
Wherein the floating material discharge pipe has at least one perforation. The method according to claim 1,
And an overflow ware installed at an upper portion between the settling-passed rectifying cylinder portions;
And a discharge pipe for discharging the overflow water to be treated through the overflow ware.

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