KR101171879B1 - Apparatus for circular floc-sedientation - Google Patents

Abstract

PURPOSE: A circular coagulating and precipitating apparatus is provided to easily precipitate and separate sludge from feed water while the feed water moves toward an upper direction. CONSTITUTION: A circular coagulating and precipitating apparatus includes a circular precipitating bath(110) and a circular coagulating bath(120). A reaction water introducing pipe(112) is arranged at the upper part of the circulating precipitating bath. A first hopper sludge discharging pipe(117) is arranged at the lower part of the circular precipitating bath. The circular coagulating bath surrounds the upper circumference of the circular precipitating bath and is in connection with the circular precipitating bath. A plurality of partitions is installed in the circular coagulating bath. Channels are formed at the upper parts and the lower parts of the partitions. One end part of the reaction water introducing pipe is in connection with the circular coagulating bath, and another end part of the reaction water introducing pipe is extended to a first hopper. A plurality of slanted panels(113a, 113b) is formed at the outer circumference of the reaction water introducing pipe.

Description

Circular flocculation and sedimentation unit {APPARATUS FOR CIRCULAR FLOC-SEDIENTATION}

The present invention relates to a circular flocculation and sedimentation apparatus.

In general, the coagulation sedimentation process applying the physicochemical treatment in the water treatment process is composed of unit processes of pH adjustment, chemical reaction, coagulation and precipitation, and filtration in separate tanks, and each tank is equipped with a stirring drive device. It is in the form that there is.

In order to efficiently perform the most basic flocculation and sedimentation treatment in such a water treatment process, it is important to compact the treatment and minimize the installation area.

However, in the conventional water treatment apparatus, since the flocculation tank, the settling tank, and the like are installed in parallel arrangements as separate devices, the appearance of the device becomes large, the production becomes cumbersome, and further, the production cost and the installation area become large. There was this.

One embodiment of the present invention is to install a circular agglomeration tank integrally on the outer periphery of the circular sedimentation tank, to reduce the initial construction cost, to shorten the construction period and installation period when you want to perform the physicochemical treatment for wastewater It is an object of the present invention to provide a circular flocculation and sedimentation apparatus that does not require power after installation.

In addition, an embodiment of the present invention is to provide a circular flocculation tank and a secondary inclined plate inside the circular sedimentation tank to provide a circular flocculation and sedimentation apparatus that can easily sedimentation and sludge through the inclined plate while the inflow water is moved upwards For that purpose.

In addition, an embodiment of the present invention is to install a plurality of diaphragm inside the circular agglomeration tank for the smooth discharge of the floccule settled quickly in the circular agglomeration tank, the width of each of the steps in the upper and lower portions of the diaphragm becomes smaller It is an object of the present invention to provide a circular flocculation and sedimentation apparatus that can form a plurality of open channels to easily discharge the sediment sludge to the bottom of the sedimentation tank.

Circular flocculation and sedimentation apparatus according to an embodiment of the present invention is formed in a cylindrical shape, the reaction water inlet pipe is provided in the upper portion, the first hopper and the circular sedimentation tank is provided with a sludge discharge pipe at the lower end of the first hopper; And surrounding the upper outer periphery of the circular sedimentation tank and communicating at the same time, and installing a plurality of diaphragms spaced apart from each other at regular intervals therein to form a plurality of spaces, respectively, in the upper and lower portions of the plurality of diaphragms. A circular agglomeration and sedimentation apparatus including a circular agglomeration tank having a first channel and a second channel formed therein, wherein the reaction water inlet pipe has one end communicating with the circular agglomeration tank, and the other end thereof extends in the first hopper direction. And a plurality of main slope plates formed on the outer periphery of the reaction water inlet pipe and inclined in the direction of the main slope plate adjacent to the partial region of the main slope plate, The first channel is formed such that its width becomes smaller step by step toward the first direction, and the second channel is The width being formed to gradually increase in a stepwise manner in the first direction, the first channel may be formed to have a smaller width than the second channel.

The main inclined plate is characterized in that it is formed to be inclined to 65 degrees to 85 degrees with respect to the reaction water inlet pipe.

The auxiliary inclined plate is characterized in that it is formed to be inclined to 40 to 50 degrees with respect to the main inclined plate.

The circular agglomeration tank receives raw water mixed with a flocculant from the outside to pass through the first channel to supply the circular sedimentation tank, and the flocks included in the mixed raw water pass through the second channel to supply the circular sedimentation tank. It is characterized by that.

The circular sedimentation tank is provided with an outflow wear portion thereon, and supplies the treated water treated in the circular sedimentation tank to a filtration tank which is the outer periphery of the circular sedimentation tank and can be selectively formed inside or outside the circular agglomeration tank. do.

The first channel is formed on one side of the upper portion of the plurality of diaphragm, the diaphragm adjacent to each other is formed alternately in the outer and inner circumferential direction of the circular coagulation tank, or in the upper and lower directions of the circular coagulation tank The mixed raw water is characterized in that to maintain a zigzag flow.

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The first channel may be formed to have a smaller width so that the mixing intensity decreases gradually in a direction in which the introduced raw water flows based on a diaphragm installed in the space into which the mixed raw water flows in the plurality of spaces. do.

The second channel may be formed to have a greater width toward the flowing direction of the introduced raw water based on a diaphragm installed in the space into which the mixed raw water flows from among the plurality of spaces.

According to the present invention, by installing the integrated circular agglomeration tank integrally on the outer periphery of the circular sedimentation tank, if you want to carry out the physicochemical treatment for the waste water, the initial construction cost can be reduced, the construction period and the installation period can be shortened, It is possible to provide a circular flocculation and sedimentation device that does not require power after installation.

According to the present invention, the main inclination plate and the auxiliary inclination plate is provided inside the circular sedimentation tank so that the sludge can be easily sedimented and separated through the inclined plate while the inflow water moves upward.

In addition, according to the present invention, a plurality of diaphragm is installed in the circular agglomeration tank for smooth discharge of the floccule settled quickly in the circular agglomeration tank, and a plurality of the width of each of the steps in the upper and lower portions of the diaphragm becomes smaller By forming an open channel, it is possible to easily discharge the settling sludge to the bottom of the settling tank.

1 is a view showing a circular flocculation and sedimentation apparatus according to an embodiment of the present invention.
FIG. 2 is a top view of the circular flocculation and sedimentation apparatus of FIG. 1.
3A and 3B are views showing the structure of the plurality of diaphragms and the flow of raw water in the circular agglomeration tank of FIG.
Figures 4a and 4b is a view showing the inclined plate and the detailed structure of the inside of the circular precipitation tank of Figure 1;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

1 is a view showing a circular flocculation and precipitation apparatus according to an embodiment of the present invention, Figure 2 is a top view of the circular flocculation and precipitation apparatus of Figure 1, Figures 3a and 3b is a plurality of inside the circular flocculation tank of Figure 1 4 is a view showing the structure of the four diaphragm and the flow of the raw water, Figures 4a and 4b is a view showing the inclined plate and the detailed structure of the inside of the circular precipitation tank of FIG.

1 to 4b, the circular flocculation and sedimentation apparatus according to the embodiment of the present invention includes a circular sedimentation tank 110 and a circular agglomeration tank 120, the circular agglomeration tank 120 is the circular sedimentation tank ( It communicates with the outer periphery of 110 and is formed integrally. In addition, the circular flocculation and sedimentation apparatus may further include a filtration tank 130 that is an outer circumference of the circular precipitation tank 110 and may be selectively formed inside or outside the circular aggregation tank 120.

On the other hand, the circular flocculation and sedimentation apparatus is used for rapid mixing, flocculation, and coagulation of the raw water to remove the particulate matter (SS), organic matter (COD), etc. contained in the raw water generated in the purified water, wastewater and civil engineering works, etc. A low power integrated flocculation and sedimentation device comprising a single unit of each unit process technology for precipitation. Here, the raw water means contaminated water generated from purified water, wastewater, and civil engineering works.

The circular sedimentation tank 110 is formed in a cylindrical cylinder shape is provided with a reaction water inlet pipe 112 in the upper inner side, the first hopper 116 and the sludge discharge pipe 117 at the lower end of the first hopper 116. It is provided. In addition, the circular sedimentation tank 110 is provided with an outflow wear portion 114, the filter tank 130 is provided in communication with the upper outer periphery of the circular sedimentation tank 110, the inside of the circular sedimentation tank 110 The treated water is supplied to the filtration tank 130 through the outflow wear portion 114.

One end of the reaction water inlet pipe 112 communicates with the circular agglomeration tank 120, and the other end thereof extends in the direction of the first hopper 116 inside the circular sedimentation tank 110. Although not shown, the reaction water inlet pipe 112 located at the inner center of the circular sedimentation tank 110 is fixed through an inner wall of the circular sedimentation tank 110 and a predetermined support bar. In addition, the outer periphery of the reaction water inlet pipe 112 is a plurality of main inclination plate 113a formed to be inclined in the same direction and inclined in the direction of the main inclination plate 113a adjacent to a partial region of the main inclination plate 113a. The plurality of auxiliary slope plates 113b formed are formed. For example, the main inclination plate 113a is formed in a rectangular shape and attached to the reaction water inlet pipe 112 so that eight pieces are inclined by about 70 degrees, and the auxiliary inclination plate 113b is provided with respect to the main inclination plate 113a. Can be installed to incline about 45 degrees.

On the other hand, the main inclination plate 113a may be made of a lamella (lamella) type or a spiral (propeller) type, the shape of the main inclination plate 113a according to the latitude of the region where the circular precipitated tank 110 is installed By appropriately selecting the angle α, the flow of the water to be treated can be appropriately controlled.

Preferably, referring to Figure 4a, the main inclination plate 113a is inclined angle of approximately 65 degrees to 85 degrees with respect to the reaction water inlet pipe 112 for use in the circular sedimentation tank 110 located in the northern hemisphere like Korea It is preferable that it is formed to have ((alpha)). In this case, the main slope plate 113a may be formed to be inclined in the same direction in a clockwise or counterclockwise direction with respect to the reaction water inlet pipe 112.

In addition, referring to Figure 4b, the auxiliary inclination plate 113b is to be installed differently according to the latitude, in the case of a low latitude, such as Korea, the inclination angle of approximately 40 degrees to 50 degrees with respect to the main inclination plate 113a It is preferable that it is formed to have (β). However, in the present invention, the inclination angle β of the auxiliary inclination plate 113b is not limited, and the inclination angle β is increased to the low latitude according to the latitude of the installation place, and the inclination angle β is decreased to the high latitude. You can also design.

In addition, the transparent glass 115 is provided on the outer surface of the circular sedimentation tank 110. Therefore, the precipitation process of the raw water in the inside of the circular sedimentation tank 110 can be easily observed through the transparent glass unit 115 from the outside.

On the other hand, the circular agglomeration tank 120 is supplied with raw water mixed with a flocculant from the outside, wherein the supplied raw water is introduced into the lower portion of the circular sedimentation tank 110 through the reaction water inlet pipe 112, the Precipitation is made while moving from the lower portion of the circular precipitation tank 110 to the upper portion, and the water to be processed to the upper portion is precipitated while passing through the main slope plate 113a and the auxiliary slope plate 113b. At this time, the sludge contained in the water to be treated flows down to the first hopper 116 of the lower portion of the circular sedimentation tank 110 is discharged to the outside through the sludge discharge pipe 117. More specifically, the treated water introduced into the lower portion of the circular sedimentation tank 110 flows with a predetermined flow rate toward the upper portion, and the treated water is clockwise or anticlockwise due to the turning force with respect to the generated flow rate. It rotates clockwise and flows upwards. In addition, the water to be treated on the upper side of the circular sedimentation tank 110 is treated water from which sludge is removed through the main slope plate 113a and the auxiliary slope plate 113b, and the filtration tank 130 through the outflow wear part 114. Will be discharged.

The circular agglomeration tank 120 is provided so as to communicate at the same time surrounding the upper outer periphery of the circular sedimentation tank 110. The circular agglomeration tank 120 is formed in a cylindrical shape that is empty inside so as to correspond to the cylindrical cylinder shape of the circular precipitation tank 110, that is to be installed to surround the outer periphery of the cylindrical cylinder. In addition, the circular agglomeration tank 120, the plurality of diaphragm 121 therein is installed to be spaced apart from each other at regular intervals to form a plurality of spaces. In this case, a first channel 121b and a second channel 121a are formed at upper and lower portions of the plurality of diaphragms 121, respectively.

In this case, the first channel 121b may be formed such that its width becomes smaller step by step toward the first direction. Here, the first direction means a direction in which the raw water flows. That is, the first channel 121b is a diaphragm installed in a space into which the mixed raw water flows from among the plurality of spaces (that is, a diaphragm installed in a space where the mixed raw water is first supplied to the circular agglomeration tank 120). On the basis of the base, the width may be made smaller so that the mixing strength decreases step by step toward the flow of the introduced raw water. In addition, the first channel 121b is formed to have a relatively smaller width than the second channel 121a.

The first channel 121b formed as described above is formed at one side of the upper portion of the plurality of diaphragms 121, and in the diaphragm adjacent to each other, the outer circumferential direction and the inner circumferential direction of the circular aggregation tank 120, or the Alternately formed in the upper and lower directions of the circular coagulation tank 120. Through such a shape, the raw water mixed in the circular agglomeration tank 120 can maintain the zigzag flow (see arrows a and b of FIG. 3B).

The second channel 121a is formed to have a larger width toward the flowing direction of the introduced raw water based on a diaphragm installed in the space into which the mixed raw water flows from among the plurality of spaces. The present invention creates a passage such as the second channel (121a) in the lower portion of the diaphragm in the circular agglomeration tank 120 for the smooth discharge of the floccule quickly settled in the circular agglomeration tank 120, the last circular agglomeration tank 120 Install a second hopper to collect the settling sludge in the lower part of the space. Here, the second hopper has a predetermined discharge pipe in the lower portion thereof, and communicates with the lower portion of the circular precipitation tank through the discharge pipe. Therefore, in the present invention, the floc precipitated through the second channel 121a in the circular agglomeration tank 120 is discharged to the bottom of the circular precipitation tank 110 at a predetermined interval through the second hopper and the discharge pipe, and the circular agglomeration tank is The flocks that are not precipitated inside 120 are moved to the lower side through the reaction water inlet pipe 112 in the center of the circular sedimentation tank 110 in the state contained in the raw water, and the precipitation is performed while proceeding upward. In addition, the end portion of the first hopper 116 may be formed to be inclined at approximately 60 degrees to facilitate dispersion in the circular precipitation tank 110.

The circular agglomeration tank 120 as described above divides the first channel 121b formed on the upper portion of the plurality of diaphragms 121 into two or three stages, thereby lowering the mixing strength step by step. This approach is also referred to as tapered flocculation. For example, referring to FIG. 3B, in order to configure the circular coagulation tank 120 in three steps, six plates (① to ⑥) are classified into three step groups, and plates belonging to the first step group (① to ②). ) Design the widths W1a and W1b of the first channels 121b ₁ and 121b ₂ to apply 50-60 / sec, which is a relatively high mixing strength. Is a diaphragm belonging to the first step group by the widths W2a and W2b of the first channels 121b ₃ and 121b ₄ so that 30 to 40 / sec, which is a relatively lower mixing strength than that of the first step group, can be applied. Designed to be relatively smaller than (① ~ ②), and the diaphragm (⑤ ~ ⑥) belonging to the third stage group is the first to be given a mixed strength of 10 ~ 20 / sec, which is a relatively lower than the second stage group The widths W3a and W3b of the channels 121b ₅ and 121b ₆ may be designed to be relatively smaller than the diaphragms ③ to ④ belonging to the second step group. On the other hand, as shown in Figure 3a, when the circular agglomeration tank 120 is composed of nine diaphragms (① to ⑨), the first stage group is ① ~ ③, the second stage group is ④ ~ ⑥, and the third step group will correspond to ⑦ ~ ⑨.

Here, the basic theoretical formula for deriving the mixing strength is applied to the equation of camp and Stein as shown in [Equation 1] below, and the equation for the wet type mixing strength is applied to [Equation 2] modified from [Equation 1] It is possible to calculate and apply the diaphragm opening and closing area for the admixture strength by adjusting the water supply standards (2004).

Calculation of G value

[Equation 1]

[Equation 2]

In this case, when the equation [2] is changed to the equation for the head loss, Equation 3 is obtained.

&Quot; (3) "

Here, G is the mixing strength (1 / sec), g is the acceleration of gravity, h is the head loss, V is the capacity of the circular agglomeration tank 120, Q is the inflow flow rate.

In addition, the raw water flowing into the circular agglomeration tank 120 by making the second channel 121a in the lower portion of the diaphragm of the circular agglomeration tank 120 for smooth discharge of the floccule quickly settled in the circular agglomeration tank 120. Allow 3 to 5% of the inflow of the second channel 121a to pass through. In this case, the width W2 of the second channel 121a may be uniformly formed.

In addition, the circular agglomeration tank 120 is provided with a second hopper (not shown) in the lower portion of any one of the plurality of spaces, the predetermined discharge pipe for communicating the second hopper with the lower portion of the circular precipitation tank 110 (Not shown) by receiving raw water mixed with the flocculant from the outside, and rapidly precipitated flocks among the flocks included in the mixed raw water pass through the second channel 121a and through the second hopper and the discharge pipe. It can be supplied to the lower portion of the circular sedimentation tank (110).

Although not shown, one side of the circular agglomeration tank 120 is provided with a pump, an inline mixer, so that the raw water and the coagulant and the acid alkali agent supplied from the pump is instantaneously mixed in the inline mixer. The instantaneous mixed raw water and the flocculant and the acid alkali agent are introduced into the circular agglomeration tank 120 which is non-powered to form a large and hard floc that is easy to settle.

On the other hand, the filtration tank 130 is installed so as to communicate with the upper outer periphery of the circular sedimentation tank 110 in any one of the plurality of spaces or the plurality of spaces of the circular agglomeration tank (120), or It may be installed to communicate with the circular sedimentation tank 110 through a separate treated water pipe outside the circular sedimentation tank 110. For example, in the present invention, the filtration tank 130 may be integrally installed to communicate with the upper outer surface of the settling tank 110 between a plurality of spaces of the circular agglomeration tank 120, wherein the filtration tank 130 is Filtration is performed by installing a fiber filtration tank (ie, a gravity fiber filtration device such as Patent Registration Nos. 10-0924429, 10-476851, and 10-540059) that does not require a separate inflow pump. can do. In addition, the filtration tank 130, including the filter 131 and the partition 132, using the water to be treated of the circular settling tank 110 introduced into the filtration tank 130 without the need for a separate washing water and backwashing You can also In addition, in order to increase the backwashing efficiency, the blower 133 may be operated to blow off air to the lower part of the filter to detach the flocks attached to the fibrous media. Although not shown, the filtration tank 130 is filtered water pipe, washing water pipe, inlet water level can be adjusted, treated water discharge pipe and valve, pipe and valve for backwash water discharge, piping and valve for rinsing, treated water valve In addition, by installing an air blower, an inlet pipe and a valve, the filtration and backwashing functions can be performed.

What has been described above is just one embodiment for implementing the circular flocculation and sedimentation apparatus according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following claims of the present invention Without departing from the gist of the present invention, one of ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

110: circular sedimentation tank 112: reaction water inlet pipe
113a: major slope plate 113b: secondary ramp
114: leaked wear portion 115: transparent glass portion
116: first hopper 117: sludge discharge pipe
120: circular coagulation tank 121: diaphragm
121a: second channel 121b: first channel
130: filter tank 131: filter
132: partition

Claims (9)

A circular sedimentation tank formed in a cylindrical shape and having a reaction water inflow pipe at an upper portion thereof, and a sludge discharge pipe at a lower portion of the first hopper and a lower portion of the first hopper; And
Surrounding the upper outer periphery of the circular sedimentation tank is provided so as to communicate at the same time, and installed a plurality of diaphragm spaced apart from each other at regular intervals therein to form a plurality of space, each of the upper and lower portions of the plurality of diaphragm Circular agglomeration and sedimentation apparatus comprising a; circular agglomeration tank is formed with one channel and the second channel,
One end of the reaction water inlet pipe communicates with the circular agglomeration tank, and the other end thereof extends in the first hopper direction.
On the outer circumference of the reaction water inlet pipe, a plurality of main slope plates formed to be inclined in the same direction and a plurality of auxiliary slope plates formed to be inclined in a direction of the main slope plate adjacent to a portion of the main slope plate are formed.
The first channel is formed such that its width becomes smaller step by step toward the first direction,
The second channel is formed such that its width increases step by step toward the first direction,
And the first channel is formed to have a smaller width than the second channel. The method of claim 1,
The main inclined plate is circular agglomeration and settling device, characterized in that formed to be inclined to 65 degrees to 85 degrees with respect to the reaction water inlet pipe. The method of claim 1,
And the auxiliary inclination plate is formed to be inclined at 40 degrees to 50 degrees with respect to the main inclination plate. The method of claim 1,
The circular agglomeration tank receives raw water mixed with a flocculant from the outside to pass through the first channel to supply the circular sedimentation tank, and the flocks included in the mixed raw water pass through the second channel to supply the circular sedimentation tank. Circular flocculation and settling device, characterized in that. The method of claim 1,
The circular sedimentation tank is provided with an outflow wear portion thereon, and supplies the treated water treated in the circular sedimentation tank to a filtration tank which is the outer periphery of the circular sedimentation tank and can be selectively formed inside or outside the circular agglomeration tank. Circular flocculation and precipitation device. The method of claim 4, wherein
The first channel is formed on one side of the upper portion of the plurality of diaphragm, the diaphragm adjacent to each other is formed alternately in the outer and inner circumferential direction of the circular coagulation tank, or in the upper and lower directions of the circular coagulation tank Circular condensation and precipitation device, characterized in that to maintain the mixed zigzag flow. delete The method of claim 4, wherein
The first channel may be formed to have a smaller width so that the mixing intensity decreases gradually in a direction in which the introduced raw water flows based on a diaphragm installed in the space into which the mixed raw water flows in the plurality of spaces. Circular flocculation and precipitation device. The method of claim 4, wherein
The second channel is circular agglomeration and sedimentation, characterized in that formed with a larger width toward the flow of the introduced raw water on the basis of the diaphragm installed in the space in which the mixed raw water flows in the plurality of spaces Device.

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