KR20220129909A - Water purification system with floor structure for easy back washing and removing sludge - Google Patents

Abstract

The present invention relates to a water purification system having a floor structure for easy backwashing and sludge removal. For the purification of sewage, a sedimentation tank containing filter media can be effectively back-washed, and it is possible to effectively discharge and remove the sludge settled on the bottom. The water purification system of the present invention includes: a mixing tank where sewage flows in and an outlet is formed on the upper part of the wall; and a sedimentation tank into which sewage is introduced from the mixing tank through an outlet and accommodates a filter medium for precipitating particulate suspended matters from the sewage. The bottom of the sedimentation tank is inclined downward toward a washing outlet provided on the front side, and the same is formed to have a cross section with V-shaped valleys that deepen from both ends to the center.

Description

Water purification system with floor structure for easy back washing and removing sludge

The present invention relates to a water purification system, and in particular, it is possible to effectively backwash a settling tank containing a filter medium for purification treatment of sewage, as well as to effectively discharge and remove the sludge deposited on the bottom. It relates to a water purification system having an easy floor structure.

In general, a water purification system refers to a device that purifies and treats household wastewater, various industrial wastewater, and livestock wastewater to prevent environmental pollution.

This water purification system removes solid substances, organic substances, nitrogen, and phosphorus, which are major pollutants included in the sewage, through step-by-step treatment. For example, the first treatment step physically removes suspended solids with good precipitation, the second treatment step, which is the main treatment step, treats dissolved organic matter and organic solids, and the third treatment step is a physical, chemical, biological treatment method Remove organic matter and nutrients that were not removed in the secondary treatment using

Here, the method most frequently used for the secondary biological treatment is the activated sludge method, and the organic matter removal rate is aimed at an average of 90%. However, since the normally operated secondary biological treatment method also has limitations in treating pollutants, the following tertiary treatment is required to maintain high-quality treated water.

For the tertiary treatment of sewage, depending on the material to be treated, rapid sand filtration, coagulation sedimentation, and membrane separation are used for organic matter including suspended matter, and biological nitrification/ The denitrification method is used. In the case of phosphorus, coagulation precipitation and other biological methods, as well as the simultaneous biological nitrogen and phosphorus removal method, and the above modification method are widely used.

Among them, the water purification device using the rapid filtration method is widely used because it has the advantage of obtaining relatively high-quality treated water, but there was a difficulty in maintenance such as frequent backwashing. In particular, in the case of the traditional serial connection method, which sequentially processes wastewater while moving it along the mixing tank, adsorption tank and settling tank arranged in a row, the treatment efficiency is low, and in the case of the sedimentation tank that requires frequent maintenance such as backwashing, it is connected one-on-one in response to the adsorption tank. Due to the increased volume, maintenance was difficult.

Moreover, in the case of the water purification apparatus according to the prior art, it was difficult to remove the sludge deposited in the filter media and the settling tank during backwashing, so it suffered a lot of difficulties.

Korea Patent Publication No. 2006-0109398 (2006.10.20)

Accordingly, the present invention has been proposed to solve the problems of the prior art, and an object of the present invention is to effectively backwash the settling tank containing the filter media for the purification of sewage, as well as to effectively backwash the sludge deposited on the bottom. An object of the present invention is to provide a water purification system having a bottom structure that is suitable for effectively discharging and removing sludge and backwashing and sludge removal.

In order to achieve the above object, the water purification system according to the technical idea of the present invention includes: a mixing tank in which sewage is introduced and an outlet is formed on the wall; and a sedimentation tank accommodating a water purification medium for precipitating particulate suspended solids from the sewage therein, wherein the wastewater flows in from the mixing tank through the outlet; It is characterized in its technical configuration that it is formed in a cross-section with V-shaped troughs that are formed to be inclined downward toward the center and become deeper in depth from both ends to the center.

Here, in the bottom of the sedimentation tank, a plurality of guide grooves formed in the front and rear directions to guide the sludge to flow forward are arranged at intervals from left and right, and the guide grooves are connected to the discharge groove formed in the left and right directions near the front surface of the sedimentation tank bottom. can be done with

In addition, the guide groove may be characterized in that it is formed in a rectangular cross-section or a semi-circular cross-section.

In addition, an aeration device for generating aeration is installed at the bottom of the settling tank, and the aeration device is formed as a mesh-shaped body in which a hollow tube through which air is circulated is connected in a mesh shape, and the mesh-like body has an upper side. It may be characterized in that a plurality of air injection holes for spraying air are formed.

In addition, the aeration device may be characterized in that both ends are formed with a width that spans both ends of the bottom of the settling tank, so that the sludge can be moved through the V-shaped valley of the bottom of the settling tank in a state in which the aerator is installed.

In addition, the diffuser may be provided with a plurality of devices so as to softly cover the bottom of the settling tank and are arranged in succession, and may be characterized in that they are arranged in a horizontally placed state with a step difference from each other.

In addition, the filter media for water purification has a skeletal structure in which the top and sides are open by the connection of frames, and the bottom is mounted on the air diffuser in the form of a filter media cartridge loaded in a frame casing provided with a mesh. have.

In addition, the filter media is formed in a coil-shaped body with a rolled up body, and is formed in a bulge-shaped filter media having a bulge that is bulging compared to other parts, and a coil-shaped body in which the body is rolled. It may be characterized in that the hollow-type filter media having concave portions are alternately stacked, and the bulging portion of the bulge-type filter material and the concave portion of the hollow-type filter material are formed to occlude with each other.

In addition, it may be characterized in that a washing water spraying device having a washing water spray nozzle for spraying the washing water downward is installed on the rear wall and the left and right side walls of the settling tank.

In addition, the washing water spraying device has a tubular body on top of each of the rear wall and the left and right side walls, and is installed horizontally, and it is characterized in that it includes a washing water spray nozzle that allows the washing water to be sprayed downwardly to the lower side of the tubular body. have.

In addition, the settling tank may be characterized in that a plurality of parallel connection structures arranged around the mixing tank are formed so that sewage is simultaneously introduced from the mixing tank into the settling tank through an outlet to perform water purification. .

In addition, a plurality of outlets are formed side by side on the upper part of the wall of the mixing tank, and the ratio of the settling tank to the mixing tank can be expanded by arranging the settling tank corresponding to the outlet.

In the water purification system according to the present invention, when the inclined structure of the bottom of the settling tank, the air injection of the air diffuser toward the filter medium, and the washing water injection of the washing water injection device installed along the circumference of the wall are combined simultaneously, the cleaning of the filter medium and the removal of sludge can be performed effectively.

In addition, the present invention has a structure in which a plurality of settling tanks are arranged in parallel around the mixing tank, so that it is possible to simultaneously distribute the sewage by a natural flow method and perform multiple purification treatment, thereby enabling more effective water purification, Because the sedimentation tank exists in a divided, small-scale form, it is helpful to perform frequent backwashing in detail and smoothly.

1 is a perspective view of a water purification system according to an embodiment of the present invention;
2 is a side cross-sectional view of a water purification system according to an embodiment of the present invention;
3 is a perspective view of an aeration device in a water purification system according to an embodiment of the present invention;
4 is a side view of an aeration device in a water purification system according to an embodiment of the present invention;
5 is a perspective view of a denitrification induction device in a water purification system according to an embodiment of the present invention;
6 is a side view of a denitrification induction device in a water purification system according to an embodiment of the present invention;
7 is a perspective view of an equalizing flow rate distribution device in a water purification system according to an embodiment of the present invention;
8 is a cross-sectional view for explaining the internal configuration of an equal flow distribution device in the water purification system according to an embodiment of the present invention;
9 to 11 are a series of reference diagrams for explaining the action and operation of the flow equalization distribution device in the water purification system according to an embodiment of the present invention
12 is a reference cross-sectional view for explaining the composition of the flow rate equalization distribution device, the variable rectification module, and the overflow ware in the water purification system according to the embodiment of the present invention and the flow control of sewage made through them;
13 is a front view for explaining the configuration of a variable rectification module in the water purification system according to an embodiment of the present invention;
14 and 15 are reference views for explaining the configuration and operation of the variable rectification module in the water purification system according to the embodiment of the present invention.
16 is a cutaway view showing the inside of the sedimentation tank in the water purification system according to an embodiment of the present invention;
17 is a perspective view of the wall flow ware for explaining the configuration of the wall flow ware in the water purification system according to an embodiment of the present invention;
18 and 19 are a series of reference diagrams for explaining the action and operation of the overflow part variable wear among the overflow wear in the water purification system according to an embodiment of the present invention
20 is a reference cross-sectional view showing the arrangement state of the washing water injection device and the air diffuser inside the settling tank in the water purification system according to the embodiment of the present invention;
21 is a perspective view of a filter media (bulge-type filter media, hollow-type filter media) in the water purification system according to an embodiment of the present invention;
22 is a reference perspective view showing the stacked state of the filter media in the water purification system according to the embodiment of the present invention;
23 is a side view of a filter media cartridge in the water purification system according to an embodiment of the present invention;
24 is a reference view showing a state in which the filter media cartridge is accommodated in the settling tank in the water purification system according to an embodiment of the present invention;

A water purification system according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are enlarged than the actual for clarity of the present invention, or shown reduced than the actual in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

<Example>

1 and 2, the water purification system according to an embodiment of the present invention controls the flow of sewage based on a natural flow method. By simultaneously distributing sewage water to a plurality of settling tanks 100B by a parallel connection structure disposed on both sides, the purification treatment efficiency is increased, while backwashing of the settling tank 100B, etc. This is to make maintenance more detailed and smooth.

According to such a parallel connection structure, it is possible to dramatically increase the water treatment capacity by distributing the sewage flowing into the mixing tank 100A to the plurality of settling tanks 100B simultaneously for purification and discharge. In addition, since the number and arrangement of the settling tank 100B connected to the mixing tank 100A can be simply changed and constructed, it becomes possible to optimize the shape or scale of the entire system according to local conditions.

For example, the ratio of the settling tank 100B around one mixing tank 100A can be expanded from 1:1 to 1:4, or even more, two settling tanks 100B with respect to the mixing tank 100A. Even if connected, the two settling tanks 100B may be disposed only on one side of the mixing tank 100A, and the two settling tanks 100B may be disposed only on the other side of the mixing tank 100A, or a change such as arranging one on both sides This is possible. And it is also possible to simply change and expand the scale of the entire system by arranging a plurality of systems centered on the mixing tank (100A). Here, a plurality of outlet ports 101a are formed side by side on the upper part of the wall 101 of the mixing tank 100A, and the settling tank 100B for the mixing tank 100A by arranging the settling tank 100B corresponding to the outlet 101a. ) can be expanded.

As described above, the water purification system according to the embodiment of the present invention is based on a natural flow method and has a unique layout of a parallel connection structure, while having an aeration device 110 , a variable rectification module 130 , and an equal flow distribution device 120 . ), the flow wear 140, the air diffuser 150, the washing water injection device 160, and the filter media cartridge (180M) as main components.

Hereinafter, a water purification system according to an embodiment of the present invention will be described in detail focusing on the main components.

The aeration device 110 is installed at the bottom of the mixing tank 100A and simultaneously ejects the sludge for denitrification and the air for generating aeration while simultaneously generating and mixing the aeration.

To this end, the aeration device 110 is branched along the outer peripheral surface of the outer main tube 111 to receive the sludge and the outer main tube 111 as shown in FIGS. 3 and 4 to eject the sludge to the mixing tank 100A. It is provided with an external jet pipe (111a) that allows the sludge to be jetted through a plurality of external jet pipes (111a). On the other hand, the inner main tube 112 installed in the form of a double tube along the inside of the outer main tube 111 and supplied with air for aeration generation, and a plurality of branches along the outer circumferential surface of the inner main tube 112, the outer jet tube (111a) ) is branched in the form of a double pipe through the interior of the mixing tank 100A and provided with an internal jet pipe (112a) for blowing air for generating aeration.

According to the configuration of the aeration device 110, the sludge for denitration and the air for generating aeration are simultaneously blown out from the external jet pipe 111a and the internal jet pipe 112a having a double pipe structure, thereby supplying the sludge for denitration and the air for generating aeration. Thus, it can be mixed with the sewage naturally.

The outer main pipe 111 and the inner main pipe 112 are formed so that the direction of movement of sludge and air is opposite to each other, and each end is closed to sludge through the external jet pipe 111a and the internal jet pipe 112a and The air is blown out strongly, and through this, it is smoothly mixed with the sewage. Here, as shown in FIG. 4 , the external jet pipe 111a and the internal jet pipe 112a are inclined downward so that the sludge jetting direction and the air jetting direction are directed toward the bottom of the mixing tank 100A, respectively. In this way, it is possible to effectively suppress the phenomenon of excessive floating of sludge due to the blowing of air for aeration generation. And the end of the inner jet pipe (112a) is formed longer than the end of the external jet pipe (111a) so as to protrude to the outside of the external jet pipe (111a). This prevents the internal jet pipe 112a from which air is blown from being clogged with sludge, and it becomes possible to smoothly jet both sludge and air.

On the other hand, the denitration induction device 190 having a double pipe structure similar to the aeration device 110 is installed in the discharge groove 103b formed in the front bottom of the settling tank 100B. The denitration induction device 190 ejects a part of the sludge collected from the bottom of the settling tank 100B from the discharge groove 103b, and at the same time, after being purified in the settling tank 100B, some of the effluent discharged through the outlet 102a (for example, A small amount of about 1%) is circulated and ejected from the inside of the settling tank 100B, thereby inducing a denitrification reaction with respect to the sewage newly introduced into the settling tank 100B. Since the effluent contains a nitrogen component like organic sludge, it is mixed with the sewage in the settling tank 100B, thereby inducing a denitrification reaction for the sewage.

To this end, the denitration induction device 190 is branched along the outer circumferential surface of the outer main tube 191 receiving the sludge and the outer main tube 191 as shown in FIGS. 5 and 6 to supply the sludge to the mixing tank 100A. An external jet pipe (191a) for jetting is provided so that the sludge can be jetted through a plurality of external jet pipes (191a). On the other hand, the inner main pipe 192 installed in the form of a double pipe along the inside of the outer main pipe 191 and receiving the outflow water, and a plurality of branches along the outer circumferential surface of the inner main pipe 192, the inside of the external jet pipe (191a) It is branched in the form of a double pipe through and provided with an internal jetting pipe (192a) for jetting the effluent to the settling tank (100B).

According to the configuration of the denitrification induction device 190, some sludge collected from the bottom of the settling tank and the effluent returned after being circulated from the external jet pipe 191a and the internal jet pipe 192a having a double pipe structure are simultaneously jetted inside the settling tank 100B. It can induce a denitrification reaction for the sewage that is newly introduced into the Here, a portion of the sludge ejected from the external jet pipe 191a is jetted into the mixing tank 100A through the aeration device 110 installed in the mixing tank 100A to induce a denitrification reaction.

The outer main pipe 191 and the inner main pipe 192 are formed so that the movement directions of the sludge and the effluent are opposite, respectively, and each end is closed so that the sludge and the effluent through the external jet pipe 191a and the internal jet pipe 192a are formed. to make the ejection of the Here, as shown in FIG. 6 , the external jet pipe 191a and the internal jet pipe 192a are inclined downward so that the sludge jetting direction and the outflow water jetting direction face the bottom or the side surface of the discharge groove 103b, respectively. Accordingly, it is possible to suppress the phenomenon of excessive floating of sludge due to the ejection of the effluent. And the end of the inner jet pipe (192a) is formed longer than the end of the external jet pipe (191a) so as to protrude to the outside of the external jet pipe (191a). This prevents the internal jet pipe 192a from which the effluent is ejected from being clogged by the sludge, and it is possible to smoothly eject both the sludge and the effluent.

As shown in FIGS. 1 and 2 , a stirring blade 115 is further installed in the mixing tank 100A together with the aeration device 110 . As such, when the aeration device 110 of a unique configuration and the general stirring blade 115 are installed together in the lower and upper parts of the mixing tank 100A, the sludge in the sewage supplied from various sources can be homogenized and the oxygen content can be uniformly distributed. have. In addition, when chemicals are added for purification treatment of sewage, these chemicals can be quickly and uniformly mixed. Therefore, there is no need to install an additional device to homogenize the sludge and oxygen in the sewage and to improve the denitrification effect.

The flow equalization distribution device 120 is installed on the wall of the mixing tank 100A and serves to control the flow of sewage by a natural flow method. To this end, the flow equalization distribution device 120 includes a guide body 121, opening/closing doors 122 and 123, and a driving motor 124 provided with a first actuator as shown in FIGS. 7 and 8 .

The guide body 121 of the equalizing flow distribution device 120 is installed in a U-shape along both sides and the lower circumference of the outlet 101a of the mixing tank 100A so that the opening and closing doors 122 and 123 can be rotated. While supporting, the flow of sewage is guided to the outlet (101a).

The lower end of the opening and closing doors 122 and 123 is hinged to the lower end of the guide body 121 to open and close the front opening of the guide body 121 while rotating around the lower hinge shaft 122d. It is possible to adjust the water level at which the overflow occurs, so that it is possible to simply control the flow rate of the sewage flowing out into the settling tank 100B through the outlet 101a. That is, in the state in which the opening and closing doors 122 and 123 are rotated forward and opened as shown in FIG. 9 , even if the water level of the sewage is relatively low, the sewage actively overflows the opening and closing doors 122 and 123 and flows out to the outlet 101a, but in that state As shown in FIGS. 10 and 11 , as the opening and closing doors 122 and 123 rotate rearward, the upper sides of the opening and closing doors 122 and 123 increase and the overflow amount of sewage gradually decreases.

Here, the opening/closing doors 122 and 123 are hinged to the lower front end of the guide body 121 and rotated so that the flow rate of the overflowing sewage can be adjusted according to the rotation angle thereof. 122) is formed at the side end of the front panel unit 122 to fill the gap between the guide body 121 and the guide body 121 during the rotational operation and to support the front panel unit 122 rotating with respect to the guide body 121. It consists of part 123 . The upper side 122a of the front panel part 122 of the opening and closing doors 122 and 123 is a triangle that prevents the sudden overflow of sewage and induces a smooth flow of sewage by allowing the overflow of sewage to start in small amounts at multiple points at the beginning of overflow. formed in a waveform. The side panel part 123 is formed in a sector shape having a gear tooth 123a on the upper arc, and the guide body 121 is meshed with the side panel part 123 and the gear tooth 123a of the driving motor 124 . A gear assembly (not shown) that provides driving force is installed.

A guide protrusion 123b is provided on the upper end of the outer surface of the side panel part 123, and the guide body 121 has a circular arc shape for guiding the movement of the guide protrusion 123b when the opening and closing doors 122 and 123 are rotated. A guide groove (121a) is formed. As a result, the rotational operation of the opening and closing doors 122 and 123 can be performed smoothly. A limit switch (not shown) is further installed at both ends of the guide groove 121a to sense the open/closed state of the opening/closing doors 122 and 123 by being switched by the guide protrusion 123b.

What can be noted in the configuration of the equal flow distribution device 120 is that the opening and closing doors 122 and 123 are rotated by the driving force provided from the driving motor 124 provided as the first actuator to control the flow of sewage. However, unlike the general flow path opening/closing method, when the sewage overflows from the mixing tank 100A and exceeds the set water level, the front panel part 122 of the opening/closing doors 122 and 123 overflows and flows out into the settling tank 100B. that it is being followed. As such, since the flow equalization distribution device 120 is based on a natural flow method, there is little energy consumption for transporting the sewage from the mixing tank 100A to the settling tank 100B, and the natural flow of the sewage can be maintained. This natural flow method is also applied to the overflow ware 140 that discharges purified sewage from the settling tank 100B, so that water purification is performed while maintaining the natural flow of sewage throughout the system.

According to the configuration of the equal flow distribution device 120 that controls the flow of sewage based on the natural flow method, it is very easy to control the flow of sewage according to the water quality information transmitted from each area of the water purification system. . To this end, the turbidity of the sewage flowing into the mixing tank 100A and the turbidity of the sewage in the upper part of the settling tank 100B are measured, and the flow of the sewage by the flow equalization distribution device 120 is adjusted in consideration of this. In addition, the turbidity of the sludge discharged from the discharge groove 103b formed in the lower front of the settling tank 110 is measured, and the turbidity of the sludge measured at this time is also taken into consideration.

To this end, a first turbidity measuring sensor for measuring the turbidity of the sewage flowing into the mixing tank 100A, a second turbidity measuring sensor installed on the upper portion of the settling tank 100B to measure the turbidity of the sewage, and the settling tank ( A third turbidity measuring sensor for measuring the turbidity of the sludge discharged from 100B) is provided, and the turbidity for each point is measured by the first turbidity measuring sensor, the second turbidity measuring sensor, and the third turbidity measuring sensor.

The flow equalization distribution device 120 is installed in plurality to correspond to the settling tank 100B connected to the mixing tank 100A as the center. Accordingly, when the settling tank 100B is connected in parallel with respect to the mixing tank 100A, the flow equalization distribution device 120 is also arranged side by side in the mixing tank 100A and installed so that it can operate individually.

On the other hand, the opening and closing doors 122 and 123 are configured to be able to rotate manually by a manual operation separately from the first actuator in addition to being able to rotate automatically by a first actuator that provides a driving force. Manual operation by such a manual operation is possible by simply using a lever or by connecting a wire to the opening and closing doors 122 and 123 to operate the winch.

The variable rectification module 130 is vertically installed to face and spaced apart from the front wall on which the outlet 101a is formed in the settling tank 100B as shown in FIGS. 12 to 15, and to the settling tank 100B through the outlet 101a. It consists of a porous fixed rectifying wall 130A for filtering foreign substances from the inflowing sewage, and a porous variable rectifying wall 130B installed to be able to ascend and descend in an overlapping state facing the fixed rectifying wall 130A. The variable rectifying wall 130B adjusts the distribution amount of sewage according to the inflow height of the sewage passing through the upper, middle, and lower portions of the fixed rectifying wall 130A while ascending and descending along the fixed rectifying wall 130A.

Here, the first through hole 131 formed in the fixed rectifying wall 130A may be formed to have the same diameter at the upper and lower portions as shown in FIGS. 13 to 15 , but is formed to have a gradually larger diameter toward the lower side. The water pressure of the sewage water passing through the first through hole 131 of the wall 130A can be adjusted equally. In addition, although not shown in the drawing, the first through hole 131 is formed to have a gradually larger diameter from the center of the fixed rectifying wall 130A toward the left and right side, thereby eliminating the deviation of the water pressure that changes toward the left and right and adjusting the flow rate equally. It is possible.

The variable rectifying wall 130B is provided with a vertical width narrower than that of the fixed rectifying wall 130A as shown in FIGS. 13 to 15 , and even in the case of the second through hole 132 formed in the variable rectifying wall 130B. It is formed to have a gradually larger diameter toward the lower side. However, as shown in FIG. 13, when the variable rectifying wall 130B is completely lowered, between the first through hole 131 and the second through hole 132 respectively formed in the fixed rectifying wall 130A and the variable rectifying wall 130B. It is desirable to communicate in a state in which the size and position match. According to this configuration, the variable rectifying wall 130B is completely lowered so that the first through-hole 131 and the second through-hole 132 are matched so that they are completely communicated, so that the sewage can pass freely rather than filtering the sludge, and FIGS. 14 and 15 . As shown, the first through-hole 131 and the second through-hole 132 are partially communicated so that the passing sewage does not pass freely, rather than restricting the flow rate and filtering the sludge may be focused.

On the other hand, it is preferable that the lower end 133 of the variable rectifying wall 130B protrudes further downward than the lower end of the fixed rectifying wall 130A when descending so as to be in close contact with the bottom of the settling tank 100B. Here, since the bottom of the settling tank 100B is formed in a cross-section with V-shaped valleys that become deeper in depth from both sides to the center to facilitate sludge washing and discharge, the lower end of the variable rectifying wall 130B is also the lower end of the settling tank 100B. It is preferable to be formed in the shape of a gentle triangular protrusion that protrudes downward from both sides to the center to correspond to the bottom.

As described above, according to the configuration of the variable rectification module 130 in which the fixed rectifying wall 130A and the variable rectifying wall 130B are combined into one, the flow rate ratio and flow rate of sewage passing through the fixed rectifying wall 130A by height are mixed while adjusting. It is possible to appropriately control the inflow of sewage from the tank 100A to the settling tank 100B. This not only induces an even distribution of sewage in the upper, middle, and lower parts, but also blocks the inflow of sewage while the variable rectifying wall 130B moves to the top depending on the situation, and allows the inflow of sewage in the middle to cause deviation It is also possible to induce distribution. As such, in the case of the variable rectification module 130, the amount of sewage inflow can be adjusted according to the situation.

Here, the variable rectifying wall 130B may be provided with a second actuator that provides a driving force so that the variable rectifying wall 130B is automatically raised and lowered by the driving force of the second actuator. At the same time, it is preferable that the variable rectifying wall 130B is configured to be manually elevated separately from the second actuator. The second actuator may be simply provided with a motor, a hydraulic cylinder, a wire, a winch, and the like, and a lever or a winch may be used for manual operation.

The overflow wear 140 is configured to naturally discharge the effluent intermediately purified in the settling tank 100B by a natural flow method with little energy consumption. The overflow wear 140 includes an overflow part 143 , a connection part 144 , a wear part 142 , and a porous partition wall 141 as shown in FIGS. 16 and 17 .

In the overflow wear 140 , the overflow part 143 is installed across the upper part of the sedimentation tank 100B in the transverse direction at a point spaced apart from the rear wall of the sedimentation tank 100B and has an open upper surface. Accordingly, when the intermediately purified sewage water in the settling tank 100B exceeds a predetermined water level, the upper side of the overflow part 143 overflows and flows in. The connecting portion 144 connects the overflow portion 143 and the outlet 102a to guide the overflowing portion 143 so that the inflowed sewage is discharged through the outlet 102a, and the upper surface is open. Sewage exceeding a certain water level overflows into the inside of the connection part 144 together with the overflow part 143 and then is discharged through the outlet 102a. In the configuration of the overflow wear 140 having the overflow portion 143 and the connecting portion 144 , the overflow portion 143 is not integrally provided on the rear wall 102 of the settling tank 100B, but the front of the rear wall 102 . It can be noted that it is provided at a point spaced apart from each other. According to this configuration, as shown in FIG. 12 , the overflow of sewage intermediately purified in the settling tank 100B is made double not only on the front side of the overflow part 143 but also on the rear side.

Furthermore, the overflow wear 140 is further provided with a porous partition wall 141 installed across the inner space of the settling tank 100B in the transverse direction along the overflow portion 143 from the lower side of the overflow portion 143 . A plurality of through-holes 141a are formed in the porous partition wall 141 to uniformly control the flow rate and flow rate of the sewage while passing the intermediately purified sewage. According to the configuration in which the porous partition wall 141 is installed at the lower side of the overflow unit 143 as described above, it suppresses drift and short-circuit flow with respect to the flow of sewage flowing from the lower side of the overflow unit 143 and is formed in the lower portion of the rear end of the settling tank 100B. It will minimize the area of the watershed.

Here, in the porous partition wall 141, the through-holes 141a are not uniformly formed in the upper and lower regions, and the passage area of the sewage by the through-holes 141a is differentiated in the upper region and the lower region, or the upper region and the lower region. It may be configured in a form in which the diameter of the through hole 141a is differentiated. In particular, as shown in the figure, by intensively forming the through-holes 141a only in the lower region, the flow of sewage in the lower region is strengthened, thereby suppressing drift and short-circuit flow, and forming a sasu region in the lower portion of the rear end of the settling tank 100B. It is possible to further strengthen the influence of minimizing

However, it goes without saying that the configuration of the porous partition wall 141 as described above may be performed in a direction to control the flow of sewage water uniformly and smoothly in consideration of various environments formed inside the settling tank 100B.

The overflow wear 140 is formed to extend forward from the overflow part 143 and further includes a wear part 142 made of a fixed wear 142a and a variable wear 142b. The fixed wear (142a) and the variable wear (142b) have an open upper surface and are not significantly different from the overflow part 143 or the connection part 144 described above in form. However, the wear part 142 has a form extending forward from the overflow part 143 and is configured to control the overflow amount and residence time of the sewage intermediately purified inside the settling tank 100B.

In addition, the variable weir 142b is configured to allow an upward tilting operation with respect to the fixed weir 142a, so that it is also possible to actively control the overflow amount of sewage. That is, as shown in FIGS. 17 to 19 , the wear part 142 is a fixed wear 142a extending from the overflow part 143 and a variable wear combined so as to be tiltable upward at the tip of the fixed wear 142a ( 142b). If you look closely at the coupling portion of the fixed wear 142a and the variable wear 142b through the enlarged part of FIG. 17, the upper end of the front end of the fixed wear 142a and the upper end of the rear end of the variable wear 142b are pin-coupled to form a pair. It has a ring 142c, and at the lower end of the rear end of the variable wear 142b, a leak prevention part 142d extending in a fan shape on the side and bottom so as not to create a gap with the fixed wear 142a during the tilting operation is further added. be prepared

According to the configuration in which the variable weir 142b is tiltable as described above, it is possible to adjust the overflow amount of sewage according to the tilting angle of the variable weir 142b. That is, when the variable wear 142b is tilted upward, overflow can be reduced without overflow in the portion located above the water surface among the variable wear 142b, and conversely, do not tilt the variable wear 142b upward. Otherwise, the variable weir 142b allows more overflow while allowing the overflow of sewage at the same height as the overflow portion 143 and the fixed weir 142a. As such, it is possible to adjust the overflow amount and discharge amount of sewage according to the tilting angle of the variable wear 142b. For example, as shown in FIG. 19 , by lifting the tip of the variable ware 142b into which sewage is introduced and locating it on the surface of the sewage, the discharge of sewage through the overflow ware 140 is at a level of 70%. Here, if the variable ware 142b is further lifted, the amount of wastewater is further reduced. Conversely, as shown in FIG. 18 , the variable ware 142b is lowered to form a straight line with the fixed ware 142a, and the amount of wastewater discharged is 100%. As such, since the discharge of sewage according to the tilting angle of the variable weir 142b varies depending on the fluctuation of the level of the sewage accommodated in the settling tank 100B, the tilting angle of the variable weir 142b may be adjusted in consideration of the level of the sewage. Here, the third actuator for the tilting operation of the variable wear 142b may be simply provided as a motor, hydraulic cylinder, pneumatic cylinder, etc. connected to the rotation shaft (hinge shaft) of the variable wear 142b.

Furthermore, the variable wear 142b is preferably configured to be manually tiltable separately from the third actuator. A lever or winch may be installed for such manual operation by manual operation, and when a winch is used, a wire may be connected to the end (front end) of the variable wear 142b.

On the other hand, the upper sides of the overflow part 143 and the wear part 142 are formed in a triangular waveform so that the overflow of sewage starts in small amounts at a number of points at the beginning of overflow to induce a smooth flow of sewage.

Moreover, a plurality of the wear parts 142 are installed to be individually operable on the left side and the right side. In this way, when a plurality of the wear parts 142 are installed so that they can be operated individually on the left side and the right side, it is possible to more freely control the amount of wastewater. In this way, three or more wear units 142 may be installed.

On the other hand, a first turbidity measuring sensor for measuring the turbidity of the sewage flowing in from the mixing tank 100A, a second turbidity measuring sensor installed on the upper part of the settling tank 100B to measure the turbidity of the sewage, and the settling tank ( In consideration of the turbidity of the sewage at each point measured by the third turbidity measuring sensor that measures the turbidity of the sludge discharged from the bottom discharge groove 103b of 100B), the flow control of the sewage by the flow equalization distribution device 120, The flow of sewage by controlling the distribution amount for each inflow location of sewage by the variable rectification module 130 including the fixed rectifying wall 130A and the variable rectifying wall 130B and controlling the discharge of sewage by the overflow ware 140 . can be maintained smoothly and the purification efficiency of sewage can be maintained in the best state.

The washing water spraying device 160 is installed so as to spray the washing water downward from the top of the rear wall and the left and right side walls of the settling tank 100B as shown in FIG. 20 . The washing water spraying device 160 has a tubular body on top of each of the rear wall and the left and right side walls so as to receive the washing water and is installed horizontally, and a washing water spray nozzle configured to spray the washing water downwardly to the lower side of the tubular body. A number of (161) are provided. As such, when the long-form washing water spraying device 160 is installed on the left side wall, the right side wall and the rear wall of the settling tank 100B, the wall of the settling tank 100B by the washing water sprayed three-dimensionally along the left side wall, the right side wall and the rear wall It is possible to effectively remove and discharge the deposited sludge from the bottom to the bottom (103). At this time, the washing water sprayed from the washing water spraying device 160 installed on the left and right side walls of the settling tank 100B flows along the left and right side walls, and then along the bottom 103 of the settling tank 100B, left and right in a V shape. It gathers in the central part, which is the deepest part of the valley, and the washing water sprayed from the washing water spraying device 160 installed on the rear wall of the settling tank 100B flows along the rear wall and then the bottom 103 inclined downward to the front of the settling tank 100B. It flows toward the washing outlet 104 formed on the front of the floor along the. In this way, the washing water sprayed from the washing water spraying device 160 flows along with the sludge along the left side wall, the right side wall, and the rear wall of the settling tank 100B, and then collects from the bottom of the settling tank 100B to the central part. ) is discharged and transported through the cleaning outlet 104 and the common pipe 105 formed on the front of the floor.

In order to increase the washing effect on the deposited sludge when the washing water is sprayed from the washing water spraying device 160, the bottom 103 of the settling tank 100B is inclined downward toward the front, and the depth increases from both ends to the center. It is formed in a cross-section with a trough. In addition to this, a guide groove 103a is formed at the bottom of the settling tank 100B to guide the flow of the sludge connected to the sludge discharge groove 103b formed on the front side as shown in FIG. 20 . Although the shape of the guide groove 103a is shown as a semi-circular cross-section in the drawing, a rectangular cross-section is possible. In addition, if the flow of washing water and sludge can be made smoothly, it may be formed in other forms.

The aeration device 150 is installed to generate aeration at the bottom of the settling tank 100B. As shown in FIG. 16 , the air diffuser 150 is formed as a body in which a hollow tube through which air is circulated is connected in a mesh shape, and the mesh body has a plurality of air injection holes for spraying air upwards. (151) is provided. Looking at the state in which the diffuser 150 is placed on the bottom 103 of the settling tank 100B and installed, both ends are formed with a width that spans both ends of the bottom of the settling tank 100B as shown in FIG. 16, and the aerator 150 is installed. Even in the state, the movement of the sludge along the bottom 103 of the settling tank 100B is not significantly affected.

The air diffuser 150 is provided in plurality so as to cover the bottom 103 of the settling tank 100B by softening it in the front-rear direction, and is continuously arranged in the front-rear direction. And they are arranged in a horizontally placed state with a step difference with respect to each other. As a result, the air diffuser 150 can also serve as a pedestal for stably supporting the filter media cartridge 180M from the lower side, in which the filter media 170 is loaded in a large amount on the frame casing 180 .

As such, the aeration device 150 generates aeration upwards to separate suspended particulate matter deposited on the stacked filter media 170 and organic substances and nutrients contained therein from the filter media 170 to be precipitated, and to spray the washing water. The device 160 strongly sprays washing water along the wall surface of the sedimentation tank 100B to separate the sludge deposited on the wall surface and the bottom 103 of the sedimentation tank 100B, and the cleaning outlet 104 together with the materials separated from the filter media 170 ) to be excreted through

The filter media 170 for water purification is a member that is charged in the settling tank 100B of the water purification system and serves to remove organic matter and nutrients contained in the suspended matter while precipitating the particulate suspended matter contained in the sewage, as shown in FIG. It consists of any one of the illustrated bulge-type filter media 170A and the hollow-type filter media 170B, or includes both the bulge-type filter media 170A and the hollow-type filter media 170B.

The bulge-type filter media 170A is formed in a coil-shaped body in which the body is rolled, and is formed in a bulge-shaped form having a bulge 171 that is bulging compared to other parts, and is formed in a coil-shaped body with a rolled body. It is stacked corresponding to the hollow-type filter media 170B having the concave portion 172 that is dented compared to that. Here, although not specifically shown in the drawings, the bulge-type filter media 170A may be formed in a form in which the bulges 171 are periodically repeatedly formed at a distance from each other when the length is increased.

On the other hand, the hollow-type filter media 170B is formed in a coil-type body in which the body is rolled, and is formed in a hollow-type shape having a concave portion 172 that is recessed compared to other parts. This hollow-type filter media 170B is made to improve the lamination properties of the above-described bulge-type filter media 170A, and is alternately laminated with the bulge-type filter media 170A in a corresponding form. Here, although not specifically shown in the drawings, the hollow-type filter media 170B may be formed in a form in which the concave portions 172 are periodically repeated at a distance from each other when the length is increased.

When the bulge-type filter media 170A and the hollow-type filter media 170B are alternately laminated, the bulge 171 of the bulge-type filter media 170A and the concave portion ( 172) are occluded with each other, forming a stable stacked structure in which the stacked state is not disturbed or collapsed. As such, when the stacking stability between the filter media 170 is increased, the amount of stacking in the settling tank 100B in the water purification system can be increased, as well as a large amount of the filter media 170 stacked on the frame casing 180 in advance as shown in FIG. By configuring the filter media cartridge (180M), it becomes very convenient to handle a large amount of the filter media (170) during periodic cleaning of the settling tank (100B) and new loading and replacement of the filter media (170). In addition, since the filter media 170 is stacked very regularly, regular gaps are formed in the stacked pile of the filter media 170 . Then, the aeration generated in the aeration device 150 uniformly penetrates through the gaps and actively comes into contact with the body surface, thereby effectively cleaning the filter media 170 by aeration.

The frame casing 180 constituting the filter media cartridge 180M together with the water purification media 170 is made to accommodate the filter media 170 stacked as shown in FIGS. It forms a skeletal structure made by connecting frames in the horizontal and vertical directions, and has an open top and side surfaces. In addition, the bottom of the frame casing 180 is open so that sewage can be circulated, but it is provided with a mesh so as to stably support the loaded filter media 170 . In this way, if the frame casing 180 for loading the filter media 170 is provided, the filter media 170 is laminated on the frame casing 180 from the time of manufacture at the factory instead of putting the filter media 170 into the settling tank 100B one by one and stacking them. By providing the filter media cartridge 180M in the above-mentioned form, it is possible to simply carry a large amount of the filter media 170 into the settling tank 100B in the form of a cartridge 180M. Afterwards, when the settling tank 100B and the filter media 170 are washed or the filter media 170 is replaced, a large amount of the filter media 170 is laminated on the frame casing 180 instead of taking out the filter media 170 from the settling tank 100B one by one. It is possible to take out and process the filter media cartridge (180M) at once.

When the filter media cartridge 180M is configured in such a way that a large amount of the filter media 170 is stacked by the frame casing 180, it becomes convenient to manage the large amount of the filter media 170 in units of the cartridge 180M. Here, the frame casing 180 is preferably made of a rectangular parallelepiped, because it is suitable for the filter media cartridges 180M to face each other in the settling tank 100B as shown in FIG. 24 and to be densely accommodated in a contiguous form. According to the drawing, the filter media cartridge 180M accommodated in the settling tank 100B is shown mounted on the aerator 150, and the filter media cartridge 180M accommodated in the settling tank 100B is the size of the aerator 150 placed underneath. And shape, the size of the internal space allowed in the settling tank (100B), the flow of sewage, etc. can be comprehensively considered and efficiency can be improved by changing the size and arrangement interval rather than being provided with the same size.

The body of the filter media for water purification 170 is provided with a body made of a porous material having a porosity of 50 to 90% in order to provide an environment for microbial growth as well as to adsorb organic substances and nutrients of suspended particulate matter contained in sewage, In addition to plastic materials, it may be made of any one of alumina sulfate, iron salt, lime, and a polymer coagulant. As such, the present applicant developed the function, material and material of the filter medium 170 to deposit and remove particulate suspended matter and nutrients through a biological reaction and a physical and chemical reaction with respect to the sewage flowing into the settling tank 100B. Reference may be made to the contents known in Korean Patent Registration No. 10-0441755 (July 15, 2004) disclosed by

Although preferred embodiments of the present invention have been described above, various changes, modifications and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiments. Accordingly, the above description is not intended to limit the scope of the present invention, which is defined by the limits of the following claims.

100A: mixing tank 100B: settling tank
110: aeration device 120: flow equalization distribution device
130: variable rectification module 140: flow wear
150: aeration device 160: washing water injection device
170: media 180: frame casing

Claims (13)

a mixing tank in which sewage water flows in and an outlet is formed on the upper part of the wall; and
Sewage water flows in from the mixing tank through the outlet, and a sedimentation tank accommodating a water purification filter material for precipitating particulate suspended matter from the sewage therein;
Water purification system, characterized in that the bottom of the settling tank is formed in a cross-section with V-shaped valleys that are inclined downward toward the washing outlet provided on the front side, and have a deeper depth from both ends to the center. According to claim 1,
In the bottom of the sedimentation tank, a plurality of guide grooves formed in the front and rear directions to guide the sludge to flow forward are arranged spaced apart from left and right, and the guide grooves are connected to the discharge groove formed in the left and right directions near the front surface of the sedimentation tank bottom, characterized in that Water purification system. 3. The method of claim 2,
The guide groove is a water purification system, characterized in that formed in a rectangular cross-section or semi-circular cross-section. According to claim 1,
An aeration device for generating aeration is installed at the bottom of the settling tank, and the aeration device is formed as a mesh-shaped body in which a hollow tube through which air flows is connected in a mesh shape. A water purification system, characterized in that a plurality of air injection holes for spraying are formed. 5. The method of claim 4,
The water purification system according to claim 1, wherein both ends of the aeration device are formed with a width that spans both ends of the bottom of the sedimentation tank so that the sludge can be moved through the V-shaped valley of the bottom of the sedimentation tank in a state in which the aeration device is installed. 5. The method of claim 4,
The air diffuser is provided with a plurality of devices so as to softly cover the bottom of the settling tank, are continuously arranged in the front and rear directions, and are placed horizontally with a step difference with respect to each other so that the stacked filter media can be stably supported from the lower side. purification system. 5. The method of claim 4,
The water purification system, characterized in that the filter media for water purification is mounted on the air diffuser in the form of a filter media cartridge loaded in a frame casing with an open top and side surfaces by connection of frames and a bottom with a mesh. . 8. The method of claim 7,
The filter media is formed in a coil-shaped body with a rolled-up body, and a bulge-shaped filter media having a bulge that is bulging compared to other parts, and a coil-shaped body in which the body is rolled up, but with a concave part that is dented compared to other parts A water purification system, characterized in that the hollow-type filter media provided is alternately stacked, and the bulge part of the bulge-type filter media and the concave part of the hollow-type filter media interlock with each other. According to claim 1,
A water purification system, characterized in that a washing water jetting device having a washing water jetting nozzle for jetting washing water downward is installed on the rear wall and the left and right side walls of the settling tank. 10. The method of claim 9,
The washing water spraying device has a tubular body on top of each of the rear wall and the left and right side walls and is installed horizontally, and a washing water spray nozzle configured to spray the washing water downwardly to the lower side of the tubular body. . 11. The method according to any one of claims 1 to 10,
The water purification system, characterized in that the settling tank forms a plurality of parallel connection structures arranged around the mixing tank so that sewage is simultaneously introduced into the settling tank from the mixing tank through an outlet to purify the water. 12. The method of claim 11,
A water purification system, characterized in that a plurality of outlets are formed side by side on the upper part of the wall of the mixing tank, and the ratio of the settling tank to the mixing tank can be expanded by arranging the settling tank corresponding to the outlet. a mixing tank in which sewage water flows in and an outlet is formed on the upper part of the wall; and
Sewage water flows in from the mixing tank through the outlet, and a sedimentation tank accommodating a water purification filter material for precipitating particulate suspended matter from the sewage therein;
The bottom of the settling tank is formed in a cross-section with V-shaped troughs that are inclined downward toward the washing outlet provided on the front side and become deeper in depth from both ends to the center,
An aeration device for generating aeration is installed at the bottom of the settling tank, and the aeration device is formed as a mesh-shaped body in which a hollow tube through which air flows is connected in a mesh shape. A plurality of air injection holes for spraying are formed,
A water purification system, characterized in that a washing water jetting device having a washing water jetting nozzle for jetting washing water downward is installed on the rear wall and the left and right side walls of the settling tank.

Images