KR101047166B1 - A flotation apparatus for treating high-concentrated organic waste water - Google Patents

Abstract

PURPOSE: A floating type separation apparatus for processing highly concentrated organic wastewater is provided to maximize the efficiency of a highly concentrated organic wastewater processing process using micro-bubbles. CONSTITUTION: A floating type separation tank(10) receives flocks with water. A bubble introducing pipe combines bubbles and the flock and floats the flock on the water. Upper scum and lower scum are formed while the flock is floated on the water. A separating plate(30) is installed between the upper scum and the lower scum. A skimmer(40) eliminates the upper scum which is arranged on the upper side of the separating plate.

Description

Flotation apparatus for treating high-concentrated organic waste water

The present invention is a device for removing a high concentration of organic wastewater by floating the oil and scum by using a micro-bubble, using a micro-bubble in the pressurized water inside the pressure tank to float the floc formed in the flocculation tank, the scum formed from the floc The present invention relates to a flotation separator for high concentration organic wastewater treatment that can separate and concentrate to economically treat and maximize the treatment efficiency of high concentration organic wastewater.

As a related art of a conventional flotation separator for the purpose of treating general sewage and wastewater, Patent Registration No. 10-0337533 discloses an air tube, a motor for rotating air, a motor for rotating the air tube, and a bottom of the air tube. Air injection wing which is formed integrally to discharge the air and at the same time stirs the waste water, a plurality of bearings for rotatably supporting the air tube, a plurality of fixing the plurality of support tubes to accommodate the bearing and at the same time protect the air tube A microbubble generating device comprising a bearing housing, comprising: a protective cap coupled to a lower portion of the bearing housing, and a first sealing means comprising a plurality of seals installed to prevent waste water from flowing into the protective cap; A second sealing means composed of a mechanical seal for preventing wastewater introduced into the protective cap from entering the bearing housing and damaging the bearing; It characterized in that it comprises a fresh water supply means for supplying clean water into the protective cap to prevent the waste water from flowing into the protective cap and to prevent the second sealing means from being damaged by excessive frictional heat Microbubble generating device 'has been disclosed.

However, the conventional flotation separator is low in the application of organic wastewater containing suspended solids (SS), and there is not enough space between the surface of the float separator and the air outlet, and the pressure tank to the flotation separator. Floating microbubbles in the pressurized water do not spread to the center of the flotation separator, causing flotation, such as agglomerates of flocculant, agglomerates of suspended matter, organic matter, microorganisms, etc. , Inflow rate is determined by the inclination of the pipe flowing from the flocculation reactor to the flotation separator, there is a technical problem that the floc is dismantled due to the impact of the floc inflow when the inflow rate is high.

Therefore, when the scum formed by flocs accumulated in the flotation separator is continuously concentrated, a certain limit is reached, and when the scum is exceeded, processing efficiency is lowered, and thus, a highly concentrated scum is required to be discharged smoothly.

The present invention has been invented to solve the above problems, and the flotation separation tank into which the floc flows along with the inflow water; One end is installed in the lower part of the flotation tank to supply air bubbles into the flotation tank, thereby adhering the floc flowed into the flotation tank with the inflow water to form a bubble and floating it on the surface of the flotation tank. and; A separator installed between the upper and lower scums formed while the floc adhered to the bubbles discharged from the bubble inlet pipe is floated on the surface of the floating separation tank; Skimmer located at the upper part of the separator and one end is connected to the rotary shaft installed in the inner center of the upper part of the floating separation tank to rotate by the rotation operation of the rotary shaft to remove the upper scum located above the separator; An object of the present invention is to provide a flotation separator for treating high concentration organic wastewater that can be efficiently treated.

In addition, the separator is formed between the upper and lower scum, and formed in a lattice shape to isolate the upper scum and the lower scum, thereby affecting only the upper scum located below the separator by the rotational operation of the skimmer and below the separator. The lower scum located in the present invention is to solve the problem to provide a flotation separation device for high concentration organic wastewater treatment to prevent the mixing of the lower scum and influent by preventing the flow of the skimmer to rotate.

In addition, the influent and floc flowing into the flotation tank are introduced through the inflow pipe connecting the flocculation reactor and the flotation tank, and the inflow pipe is inclined 20 to 30˚ downward from the flocculation tank toward the flotation tank. The lower end where the influent and the floc are discharged is located above the end of the bubble inlet pipe where the bubble is discharged, and is located at the inner center of the floating separation tank, thereby preventing the dissolution of the floc that flows into the floating separation tank along the influent inlet pipe. An object of the present invention is to provide a flotation separator for treating high concentration organic wastewater, which allows air bubbles discharged from the bubble inlet pipe to be spread evenly inside the flotation tank.

In addition, an inclined discharge pipe communicating with the inside is formed at one end of the upper side of the float separation tank above the separator, and the inclined discharge pipe is inclined upward by 10 to 20 ° toward the upper scum and is discharged in the direction in which the upper scum is discharged. It is an object to solve the problem to provide a flotation separation device for the treatment of high concentration organic wastewater to remove moisture from the scum in the process of discharging the scum into the inclined exhaust pipe by gradually narrowing the width.

In addition, by installing a gap holding support at one end of the bubble inlet pipe from which the bubbles are discharged and installing a bubble diffusion plate at the top of the gap holding support, bubbles discharged from one end of the bubble inlet pipe collide with the bubble diffusion plate. The problem to be solved is to provide a flotation separator for high concentration organic wastewater treatment that can be spread evenly inside the flotation tank.

In addition, the bubble diffusion plate is composed of 1.5 ~ 2 times the size of the outlet diameter of one end of the bubble inlet pipe from which the bubbles are discharged, so that the bubbles collide with the bubble diffusion plate and spread evenly inside the flotation tank. To provide a flotation separation device for the task to be solved.

In addition, the other end of the bubble inlet pipe is connected to the pressure tank, and the upper part of the pressure tank is connected to the coagulation reaction tank by the overflow pipe, so that the high concentration organic wastewater treatment can be prevented from occurring in the pressure tank. To provide a flotation separation device for the task to be solved.

In addition, one end of the upper side of the pressure tank is connected to the floating separation tank by the bubble inlet pipe, and the lower end of the pressure tank is connected to the bottom of the floating separation tank by the connecting pipe installed with a pressure pump at one end, and air is injected into one end of the side of the pressure tank. By connecting the means, it is an object of the present invention to provide a flotation separator for high concentration organic wastewater treatment, which enables efficient wastewater treatment operation.

In addition, an object of the present invention is to provide a flotation separation device for treating high concentration organic wastewater, which can supply bubbles into the flotation tank by using an ejector as an air injection means.

Another object of the present invention is to provide a flotation separator for treating high concentration organic wastewater, which can effectively remove scum by forming a skimmer in a convex semicircle.

In addition, the skimmer has a cross-sectional shape like “L” when cut at one end, and an elastic member is connected to the skimmer end facing the inner wall of the floating separation tank, so that the scum can be effectively removed and the scum can be removed for high concentration organic wastewater treatment. It is an object of the present invention to provide a separation device.

In addition, the rotating shaft is connected to the inverter to solve the problem to provide a flotation separation device for high concentration organic wastewater treatment to control the rotational speed of the skimmer.

The present invention to solve the technical problem as described above, the flotation is introduced into the floc with inflow water; One end is installed in the lower part of the flotation tank to supply air bubbles into the flotation tank, thereby adhering the floc flowed into the flotation tank with the inflow water to form a bubble and floating it on the surface of the flotation tank. and; A separator installed between the upper and lower scums formed while the floc adhered to the bubbles discharged from the bubble inlet pipe is floated on the surface of the floating separation tank; A skimmer positioned at an upper portion of the separator and having one end connected to a rotating shaft installed at an inner center of the upper portion of the floating separation tank and rotating by a rotation operation of the rotating shaft to remove the upper scum located at the upper portion of the separator; Floating separation device for treatment of high concentration organic wastewater, characterized in that the configuration, including as a solution to the problem.

In addition, the separator is formed between the upper and lower scum, and formed in a lattice shape to isolate the upper scum and the lower scum, thereby affecting only the upper scum located below the separator by the rotational operation of the skimmer and below the separator. The lower scum located in the above is to solve the problem of the flotation device for the high concentration organic wastewater treatment, characterized in that to prevent the flow of the skimmer to prevent the mixing of the lower scum and influent.

In addition, the influent and floc flowing into the flotation tank are introduced through the inflow pipe connecting the flocculation reactor and the flotation tank, and the inflow pipe is inclined 20 to 30˚ downward from the flocculation tank toward the flotation tank. The lower end where the influent and the floc are discharged is located above the end of the bubble inlet pipe from which the air bubbles are discharged, and is located at the inner center of the flotation tank to solve the flotation device problem for high concentration organic wastewater treatment. .

In addition, an inclined discharge pipe communicating with the inside of the floating separation tank is formed at one end of the upper side of the floating separation tank above the separator, and the inclined discharge pipe is inclined upward by 10 to 20 ° toward the discharge of the upper scum, and the upper scum is discharged. As a solution of the flotation device for high concentration organic wastewater treatment, characterized in that the width is narrowed toward the direction.

In addition, by installing a gap holding support at one end of the bubble inlet pipe from which the bubbles are discharged and installing a bubble diffusion plate at the top of the gap holding support, bubbles discharged from one end of the bubble inlet pipe collide with the bubble diffusion plate. As a solution of the flotation device for high concentration organic wastewater treatment, characterized in that it is configured to spread evenly inside the flotation tank.

In addition, the bubble diffusion plate is a solution of the flotation device for high concentration organic wastewater treatment, characterized in that the bubble is composed of 1.5 ~ 2 times the size of the outlet diameter of the one end of the bubble inlet pipe discharged.

In addition, the bubble inlet pipe has a high concentration of organic wastewater treatment, characterized in that the pressure pump and the air injection means is installed in order to supply air bubbles in the flotation tank and connected to the connecting pipe connected to the lower part of the flotation tank. To solve the problem of flotation device.

In addition, a pressure tank is installed at the connection portion of the bubble inlet pipe and the connection pipe, and the upper part of the pressure tank is connected to the flocculation reaction tank by the overflow pipe. do.

In addition, one end of the overflow pipe is connected to the pressure tank, and the other end of the overflow pipe is connected to the last compartment of the coagulation tank to prevent the cavitation occurring in the pressure tank and to reduce the pressure loss of the pressure tank, By supplying pressurized water that does not contain floc to the flocculation tank through the overflow piping, the ratio of solids in the flocculation reaction tank is lowered, and the flocculated light floc is attached to the floc when the pressurized water is supplied to the flocculation tank. As a solution to the flotation device for high concentration organic wastewater treatment, characterized in that to maximize the flotation effect when the floc is supplied to the phase separation tank.

In addition, the pressurized pump is a solution for the flotation apparatus for high concentration organic wastewater treatment, characterized in that the DAF pump.

In addition, the air injection means is a solution of the flotation device for high concentration organic wastewater treatment, characterized in that the ejector.

In addition, the skimmer is a solution of the flotation device for the high concentration organic wastewater treatment, characterized in that formed in a semi-circular convex direction in the rotational direction to facilitate pushing the upper scum.

In addition, the skimmer has a cross-sectional shape of “L” when the end is cut, and an elastic member is connected to the skimmer end facing the inner wall of the flotation tank, so as to solve the problem of the flotation device for high concentration organic wastewater treatment. It is done.

In addition, the rotating shaft is connected to the inverter to adjust the rotational speed of the skimmer as a solution for the flotation apparatus for high concentration organic wastewater treatment, characterized in that.

In the flotation separation apparatus for high concentration organic wastewater treatment according to the present invention, after separating the highly concentrated solids from the flotation tank, the treated water is treated using wastewater treatment or consignment treatment, and the solid content with reduced moisture content is treated during consignment treatment. There is an advantage that can be used as raw materials such as feed, fertilizer through the reduction of the processing cost and recycling due to the volume reduction.

In addition, the flotation separation tank is introduced into the floc along with the inflow water; One end is installed in the lower part of the flotation tank to supply air bubbles into the flotation tank, thereby adhering the floc flowed into the flotation tank with the inflow water to form a bubble and floating it on the surface of the flotation tank. and; A separator installed between the upper and lower scums formed while the floc adhered to the bubbles discharged from the bubble inlet pipe is floated on the surface of the floating separation tank; A skimmer positioned at an upper portion of the separator and having one end connected to a rotating shaft installed at an inner center of the upper portion of the floating separation tank and rotating by a rotation operation of the rotating shaft to remove the upper scum located at the upper portion of the separator; It can be configured to contain wastewater efficiently.

In addition, the separator is formed between the upper and lower scum, and formed in a lattice shape to isolate the upper scum and the lower scum, thereby affecting only the upper scum located below the separator by the rotational operation of the skimmer and below the separator. The lower scum located in the can prevent the flow due to the rotation operation of the skimmer to prevent the mixing of the lower scum and the influent.

In addition, the influent and floc flowing into the flotation tank are introduced through the inflow pipe connecting the flocculation reactor and the flotation tank, and the inflow pipe is inclined 20 to 30˚ downward from the flocculation tank toward the flotation tank. The lower end where the influent and the floc are discharged is located above the end of the bubble inlet pipe where the bubble is discharged, and is located at the inner center of the floating separation tank, thereby preventing the dissolution of the floc that flows into the floating separation tank along the influent inlet pipe. Bubbles from the bubble inlet pipe can be spread evenly inside the flotation tank.

In addition, an inclined discharge pipe communicating with the inside is formed at one end of the upper side of the float separation tank above the separator, and the inclined discharge pipe is inclined upward by 10 to 20 ° toward the upper scum and is discharged in the direction in which the upper scum is discharged. By narrowing the width gradually, it is possible to remove moisture from the scum during the scum discharge into the inclined discharge pipe.

In addition, by installing a gap holding support at one end of the bubble inlet pipe from which the bubbles are discharged and installing a bubble diffusion plate at the top of the gap holding support, bubbles discharged from one end of the bubble inlet pipe collide with the bubble diffusion plate. It can be spread evenly inside the flotation tank.

In addition, the bubble diffusion plate is configured to be 1.5 to 2 times the size of the outlet diameter of one end of the bubble inlet pipe from which the bubble is discharged can be evenly spread evenly into the floating separation tank while the bubble collides with the bubble diffusion plate.

In addition, the other end of the bubble inlet pipe is connected to the pressure tank and the upper part of the pressure tank is connected to the coagulation reaction tank by the overflow pipe, thereby preventing the cavitation occurring inside the pressure tank in advance.

In addition, one end of the upper side of the pressure tank is connected to the floating separation tank by the bubble inlet pipe, and the lower end of the pressure tank is connected to the bottom of the floating separation tank by the connecting pipe installed with a pressure pump at one end, and air is injected into one end of the pressure tank. By connecting the means, the wastewater treatment operation can be made efficiently.

In addition, by using an ejector as an air injection means, bubbles can be supplied into the floating separation tank, and scum can be effectively removed by forming the skimmer in a convex semicircular shape in the direction of rotation.

In addition, the skimmer has a cross-sectional shape like “L” when cut at one end and an elastic member is connected to the skimmer end facing the inner wall of the floating separation tank, so that the scum can be effectively removed and the rotating shaft is connected to the inverter. The rotation speed of the skimmer can be easily adjusted.

1 is an overall configuration diagram according to an embodiment of the present invention.
Figure 2 is an internal cross-sectional view of the float separation tank according to an embodiment of the present invention.
Figure 3 is an enlarged view of the bubble diffusion plate according to an embodiment of the present invention.
4 is a plan view of a skimmer according to an embodiment of the present invention.
5 is an enlarged view of a skimmer according to an embodiment of the present invention.

The present invention is to improve the economics by reducing the scum treatment cost by condensing and separating a high concentration of solids in the wastewater containing a high concentration of suspended solids. Smooth the angle of the influent inlet pipe so that the floc flowing into the floating separation tank is not broken and the slope of the inclined discharge pipe from which the scum is discharged is increased from the inside to the outside to easily separate the water from the scum, and the inclined discharge from the scum is discharged. The narrower the shape of the pipe to the outside, increasing the scum's concentration efficiency.

In addition, by installing a gap holding support at the end of the micro-bubble inlet pipe so that the micro-bubble spread widely, by installing a bubble diffusion plate on the upper portion of the bubble discharged to the bubble inlet pipe impinges the bubble spread plate to spread widely inside the floating separation tank. In order to prevent cavitation, install an overflow piping from the pressure tank to the coagulation reactor.

In addition, for smooth concentration and discharge of scum formed by the floc, the skimmer has a semi-circular convex shape in the rotational direction, the cross-sectional shape of the skimmer is shaped like “L”, and the rotating shaft connected to the skimmer is connected to the inverter. To control the skimmer's rotational speed, a grid-type separator is installed inside the flotation tank to prevent the skimmer from pushing and mixing the lower scum and the influent.

After separating the highly concentrated solids from the flotation tank, the treated water is treated using wastewater treatment or consignment treatment, and the solid content with reduced moisture content is reduced by processing volume and reduced feed and fertilizer due to volume reduction during consignment treatment. It is used as a raw material.

To this end, the present invention includes a flotation tank in which floc flows along with the inflow water; One end is installed in the lower part of the flotation tank to supply air bubbles into the flotation tank, thereby adhering the floc flowed into the flotation tank with the inflow water to form a bubble and floating it on the surface of the flotation tank. and; A separator installed between the upper and lower scums formed while the floc adhered to the bubbles discharged from the bubble inlet pipe is floated on the surface of the floating separation tank; A skimmer positioned at an upper portion of the separator and having one end connected to a rotating shaft installed at an inner center of the upper portion of the floating separation tank and rotating by a rotation operation of the rotating shaft to remove the upper scum located at the upper portion of the separator; Floating separator for high concentration organic wastewater treatment, characterized in that the configuration is characterized by a technical configuration.

In addition, the separator is formed between the upper and lower scum, and formed in a lattice shape to isolate the upper scum and the lower scum, thereby affecting only the upper scum located below the separator by the rotational operation of the skimmer and below the separator. The lower scum is located in the floating scrubber for high concentration organic wastewater treatment, characterized in that the prevention of mixing of the lower scum and influent by preventing the flow by the rotational operation of the skimmer is characterized by the technical configuration.

In addition, the influent and floc flowing into the flotation tank are introduced through the inflow pipe connecting the flocculation reactor and the flotation tank, and the inflow pipe is inclined 20 to 30˚ downward from the flocculation tank toward the flotation tank. The lower end where the influent and the floc are discharged is located above the end of the bubble inlet pipe where the air bubbles are discharged, and is installed to be located at the inner center of the flotation tank. do.

In addition, an inclined discharge pipe communicating with the inside of the floating separation tank is formed at one end of the upper side of the floating separation tank above the separator, and the inclined discharge pipe is inclined upward by 10 to 20 ° toward the discharge of the upper scum, and the upper scum is discharged. Floating separation device for treatment of high concentration organic wastewater, characterized in that the width is narrowed toward the direction is characterized by the technical configuration.

In addition, by installing a gap holding support at one end of the bubble inlet pipe from which the bubbles are discharged and installing a bubble diffusion plate at the top of the gap holding support, bubbles discharged from one end of the bubble inlet pipe collide with the bubble diffusion plate. Floating separator for high concentration organic wastewater treatment, characterized in that it is configured to spread evenly inside the flotation tank is characterized by the technical configuration.

In addition, the bubble diffusion plate is characterized in that the floating separation device for the treatment of high concentration organic wastewater, characterized in that the bubble is composed of a size of 1.5 ~ 2 times the diameter of the outlet of one end of the bubble inlet pipe from which the bubble is discharged.

In addition, the bubble inlet pipe has a high concentration of organic wastewater treatment, characterized in that the pressure pump and the air injection means is installed in order to supply air bubbles in the flotation tank and connected to the connecting pipe connected to the lower part of the flotation tank. Floating separation device is characterized by the technical configuration.

In addition, a pressure tank is installed at the connection portion between the bubble inlet pipe and the connecting pipe, and the upper part of the pressure tank is connected to the flocculation tank by the overflow pipe, so that the flotation separator for the high concentration organic wastewater treatment is characterized by the technical configuration. It is done.

In addition, one end of the overflow pipe is connected to the pressure tank, and the other end of the overflow pipe is connected to the last compartment of the coagulation tank to prevent the cavitation occurring in the pressure tank and to reduce the pressure loss of the pressure tank, By supplying pressurized water that does not contain floc to the flocculation tank through the overflow piping, the ratio of solids in the flocculation reaction tank is lowered, and the flocculated light floc is attached to the floc when the pressurized water is supplied to the flocculation tank. Floating separator for high concentration organic wastewater treatment, characterized in that the floc is to maximize the flotation effect when the floc is supplied to the phase separation tank characterized by the technical configuration.

In addition, the pressure pump is characterized in that the floating separation device for high concentration organic wastewater treatment, characterized in that the DAF pump as a technical configuration.

In addition, the air injection means, characterized in that the flotation separation device for high concentration organic wastewater treatment, characterized in that the ejector is a technical configuration.

In addition, the skimmer, characterized in that the floating separation device for the high concentration organic wastewater treatment, characterized in that formed in a semi-circular convex direction toward the rotation to facilitate pushing the upper scum is a feature of the technical configuration.

In addition, the skimmer has a floating separator for high concentration organic wastewater treatment, characterized in that the cross section is shaped like “L” when one end is cut and an elastic member is connected to the skimmer end facing the inner wall of the floating separator. It features.

In addition, the rotary shaft is connected to the inverter, characterized in that the floating separation device for the high concentration organic wastewater treatment, characterized in that to control the rotational speed of the skimmer characterized by the technical configuration.

1 is an overall configuration diagram according to an embodiment of the present invention, Figure 2 is an internal cross-sectional view of the floating separation tank according to an embodiment of the present invention, Figure 3 is an enlarged view of the bubble diffusion plate according to an embodiment of the present invention, Figure 4 is a plan view of a skimmer according to an embodiment of the present invention, Figure 5 is an enlarged view of the skimmer according to an embodiment of the present invention, respectively, with reference to the accompanying drawings, high concentration organic wastewater treatment according to the present invention Referring to the configuration of the flotation separator for the following.

The biggest technical feature of the flotation separator for the high concentration organic wastewater treatment according to the present invention as a whole is to send a part of the pressurized water through the overflow pipe 101 to the coagulation reaction tank 70. That is, when a part of the pressurized water is supplied to the rear end of the flocculation reaction tank 70 in which the floc is formed, the floc is attached to the floc so that the floc becomes light. When the floc in this state is supplied into the flotation separation tank 10, the microbubbles generated inside the flotation separation tank 10 are attached to the lightened flocs in advance, and the flotation effect is further maximized. Thus, the floc can rise quickly and easily onto the float separation tank 10.

As shown in FIG. 1, the flotation apparatus for high concentration organic wastewater treatment according to the present invention prevents the floc from being released by a small impact by adding a flocculant to the wastewater containing the floc and stirring the floc with an agitator. Agglomeration reaction tank 70 for supplying the contained influent to the flotation separation tank 10 through the influent inlet pipe 80, and suspended solids (SS, suspended) of high concentration in the influent introduced into the inlet water through the influent inlet pipe 80 It consists of a flotation tank (10) for separating and processing flocs such as solids).

The outer end of the flotation separation tank 10 is connected to the upper end of the flocculation reaction tank 70 and the lower end is connected to the upper end of the flotation separation tank 10 so that the inflow water containing floc from the flocculation reaction tank 70 may be lifted. 10) the influent inlet pipe 80 to be sent is installed. The inflow pipe 80 is inclined downward toward the flotation separation tank 10 toward the flotation reaction tank 70. At this time, if the inclination angle of the influent inlet pipe 80 is too urgent, the floc may be dismantled in the process of moving along the influent inlet pipe 80, so that the floc moving along the influent inlet pipe 80 is dismantled to prevent this. The slope of the influent inlet pipe (80) is approximately 20 to 30 ° with the plane so that a stable transport can be achieved.

In addition, a pressure tank 100 is installed in the lower portion of the floating separation tank 10, and the upper one side of the pressure tank 100 and the lower one side of the floating separation tank 10 are connected to the bubble inlet pipe 20 to separate the floating. It is possible to supply bubbles into the tank 10. At this time, the end of the bubble inlet pipe 20 through which the bubble is discharged is installed to be located below the end of the influent inlet pipe 80 at a sufficient distance from the end of the influent inlet pipe 80 from which the influent inlet pipe 80 is discharged. By allowing the bubbles discharged from the end of the bubble inlet pipe 20 to spread widely.

And one end of the connection pipe 102 is installed by the air injection means 104, such as an ejector (ejector) to be able to supply the bubbles inside the floating separation tank 10 through the bubble inlet pipe 20. In addition, the lower center of the pressure tank 100 and the lower center of the floating separation tank 10 are connected by a connecting pipe 102, and one end of the connecting pipe 102 receives the inflow water in the floating separation tank 10 through a pressure tank ( A pressure pump 103 for supplying 100 is installed.

In addition, the upper surface of the pressure tank 100 and the coagulation reaction tank 70 is connected to the overflow pipe 101, when the high pressure acting on the pressure tank 100, the pressure tank 100 through the overflow pipe 101 The inflow of the to move to the coagulation reaction tank 70 to lower the pressure in the pressure tank 100 to prevent the cavitation (cavitation) in the pressure tank (100).

On the other hand, the pressure pump 103 may be a DAF pump. The DAF pump generates microbubbles and supplies microbubbles into the floating buoy 10. In the DAF pump, the ejector is installed on the suction side, and when the DAF pump is used, the pressure tank 100 may be installed or the DAF pump may be installed without the pressure tank 100 installed. In addition, when installing the pressure tank 100 and the DAF pump together, the pressure tank 100 is located on the discharge side of the DAF pump.

Looking at the internal structure of the floating separation tank 10 in more detail, as shown in Figure 2 the end of the influent inlet pipe 80 through which the inlet is discharged is installed to be located in the center of the floating separation tank 10, and Correspondingly, the end of the bubble inlet pipe 20 for discharging bubbles is installed below the end of the influent water inlet pipe 80 at a predetermined interval with the end of the influent water inlet pipe 80 for discharging the inlet water.

Here, the bubble diffusion plate 21 is installed on the top of the outlet of the end of the bubble inlet pipe 20 through which the bubbles are discharged, at a predetermined interval with the outlet as shown in FIG. 3, but the bubble diffusion plate 21 is a gap maintaining support 22. It is installed at a certain distance from the outlet. In addition, the bubble diffusion plate 21 is enlarged to approximately 1.5 to 2 times larger than the diameter of the discharge port for discharging the bubbles so that the bubbles discharged from the bubble inlet pipe 20 can be spread as wide as possible while colliding with the bubble diffusion plate (21).

The separator 30 is installed on the upper part of the floating separation tank 10 so that the upper scum 51 and the lower scum 52 are positioned above and below the separator 30. At this time, since the lower scum 52 below the separator 30 is not yet hardly concentrated, it is easily dismantled by the flow of the skimmer 40, and the separator 30 is for preventing the skimmer 40. The purpose is to minimize the influence of the flow of) to make the concentration of the lower scum 52 more firmly.

The skimmer 40 which rotates so that the upper scum 51 can be rolled out is installed above the separator 30. One end of the skimmer 40 is connected to a rotating shaft 60 that is connected to a rotating means such as an operating motor installed inwardly from the upper center of the floating separation tank 10 to be rotated in conjunction with the rotation of the rotating shaft 60. During operation, the upper scum 51 is pushed into the inclined discharge pipe 90 installed at one end of the upper side of the floating separation tank 10.

When the skimmer 40 rotates, only the upper scum 51 is affected and the lower scum 52 is isolated from the upper scum 51 by the separator 30 so that the skimmer 40 rotates even if the skimmer 40 rotates. 52 has no flow to prevent mixing with influent. And the rotating shaft 60 is connected to the inverter (inverter) can adjust the rotational speed of the skimmer 40 and the skimmer 40 is formed in a semi-convex convex shape in the rotation direction has a structure suitable for pushing the upper scum 51 When one end of the skimmer 40 is cut, the cross section is shaped like “L” so that the upper scum 51 can be pushed out more smoothly.

More specifically, the configuration of the skimmer 40 is for discharging the upper scum 51, which is a hollow drop caused by liquid inflating and containing gas, as shown in FIGS. It is easy to remove the highly concentrated upper scum 51 because it is formed in the cross section of the shape and “L”, and the upper scum 51 concentrated in the center can be easily moved out of the floating separation tank 10. And, it is made of a structure that pushes the upper scum 51 is discharged to the inclined discharge pipe 90 well.

On the other hand, in the case of the conventional skimmer shaped like "-", the scum concentrated inside the flotation tank does not move outwards, but bounces around in the center, and the junction angle between the outlet and the skimmer is 90 °. Although there was a technical problem that could not smoothly perform the role of pushing the scum falling into the outlet, the skimmer 40 of the flotation separator for the high concentration organic wastewater treatment according to the present invention is convex in the direction of progress and concentrated in a semicircular structure The upper scum 51 can be easily pushed out of the floating separation tank 10 without circling the bangle.

As shown in FIG. 5, the elastic member 41 such as a rubber plate coupled to the end of the skimmer 40 has an effect of pushing the upper scum 51 out of the outlet 40 and at the same time, the elastic member 41 floats. Since it closely adheres to the wall surface of the jaw 10 serves to prevent the upper scum 51 from escaping between the skimmer 40 and the wall surface. At this time, if the rotational speed of the skimmer 40 is too fast, a phenomenon occurs in which the upper scum 51 is mixed with the treated water, and if it is too slow, the upper scum 51 does not escape to the discharge port 40 and thus the floating separation tank ( 10) The inside is filled with scum and the water quality of the treated water is deteriorated, which reduces the treatment efficiency. Therefore, it is preferable to configure an inverter to control the rotational speed of the skimmer 40, and the scum and the treated water are mixed by adjusting the rotational speed to eliminate the phenomenon that the floating efficiency is lowered, and the concentrated upper scum 51 is inclined to the discharge pipe ( 90) can be discharged smoothly.

The inclined discharge pipe 90 is formed to communicate with the inside of the upper end of the floating separation tank 10 above the separator 30, and has an inclination upward of 10 to 20 degrees toward the upper scum 51 being discharged. At the same time, the width of the scum is narrowed toward the discharge direction of the scum.

As described above, the flotation separation apparatus for treating high concentration organic wastewater according to the present invention, in the flotation treatment of wastewater containing a high concentration of suspended solids, introduces the wastewater into the flocculation reaction tank 70 and uses the flocculant to float the flotation in the wastewater. A floc is formed from the material, and the formed floc flows into the flotation separation tank 10, and at the same time, microbubbles are injected into the flotation separation tank 10 from the pressure tank 100 to adhere the fine bubbles to the floc. In order to float the flocs by reducing the hydrophilicity to water, the wastewater treatment process of the flotation separator for the high concentration organic wastewater treatment according to the present invention with reference to the accompanying drawings as follows.

1 and 2, the pressurized water introduced from the flotation separation vessel 10 from the flocculation reaction tank 70 along the inclined influent inflow pipe 80 is 2 to 5 kg _f generated by a pressure pump. It becomes supersaturated in the pressure tank 100 which is / cm2. When pressurized water is introduced from the pressure tank 100 into the floating separation tank 10 at atmospheric pressure, fine bubbles are generated due to a sudden pressure gradient. The fine bubbles are combined with the flocs introduced from the flocculation tank 70 to rise.

That is, the bubble inlet pipe 20 is spaced apart at an interval where the air bubbles can be discharged by the space between the end portion and the support portion 22 while the diameter of the bubble inlet pipe 20 of about 1.5 to 2 times the diameter of the inner diameter Bubbles formed and discharged into the bubble inlet pipe 20 are evenly spread without colliding with the center one side of the floating separation tank 10 while being discharged between the gap maintaining support 22 while colliding with the bubble diffusion plate 21 as shown in FIG. 3. The upper scum 51 and the lower scum 52 are formed by adhering to the floc discharged from the inflow water inlet pipe 80 and floating on the surface of the flotation tank 10.

On the other hand, when the floc flowing in the flocculation tank 70 is introduced into the pipe inclined rapidly, the floc is dismantled by the impact generated by the potential energy. Particularly in the case of organic wastewater containing a large amount of oil and the like, flocs are easily dismantled even under a small impact, and there is a tendency to excessively use flocculant and to over-aggregate operation to prevent them. However, in the inlet pipe 20 according to the present invention inclined to 20 to 30 ° inclined pipes to reduce the impact by reducing the generation of potential energy to prevent the dissolution of the inflow floe, there is no fear of disassembly of the floe Because of this, it is possible to reduce the chemical cost for the flocculation of flocculation in the flocculation reactor (70).

In addition, in order to prevent the cavitation generated in the pressure tank 100, the overflow tank 101 connecting the top of the pressure tank 100 and one end of the agglomeration reaction tank 70 is installed. By reducing the pressure loss and supplying the flocculation-free water from the overflow piping 101 to the flocculation reaction tank 70, the ratio of solids in the flocculation reaction tank 70 is lowered and the inflow water having a low solids ratio is introduced into the flotation separation tank 10. As a result, the floating efficiency can be increased.

At this time, the pressurized water inside the pressure tank 100 is supplied to the last compartment of the coagulation reaction tank 70 through the overflow pipe 101. The micro bubbles generated when the pressurized water is supplied are attached to the floc in the coagulation reaction tank 70. The floc with microbubbles attached is supplied to the flotation tank 10 in a lightened state. Therefore, since the floc in the lightened state is supplied to the flotation separation tank 10, when flotation occurs in the flotation separation tank 10, the flotation efficiency of the floc is further maximized so that the floc floats quickly and easily.

The flocculation flocs introduced through the inflow water inlet pipe (80) are combined with the microbubbles introduced from the pressure tank (100) to rise above the surface of the floating separation tank (10), in which the air bubbles are discharged from the microbubble inlet pipe (20). If the gap between the end of the inlet and the inflow of the inflow water containing the floc is not sufficient, the end of the inflow pipe 80 is not sufficiently spread and the microbubbles do not spread widely and the flotation flotation efficiency and wastewater treatment efficiency are reduced. However, in the present invention, the ends of the bubble inlet pipe 20 through which the bubbles are discharged and the end of the inlet water inlet pipe 80 through which the inlet water is discharged are spaced apart at sufficient intervals to solve this technical problem.

The floc floating above the water surface by microbubbles forms a scum layer, which is not immediately discharged into the inclined discharge pipe 90 but is concentrated at a constant volume inside the flotation tank 10 at an angle of 10 to 20 °. Passing the inclined discharge pipe 90 is discharged to the outside. At this time, the upper scum 51 concentrated in the flotation tank 10 is left on the inclined discharge pipe 90 and the water separated from the upper scum 51 flows down along the inclined surface of the inclined discharge pipe 90 to be removed. . And the upper scum 51 concentrated while being pushed toward the outlet of the gradually narrower exhaust pipe 90 is discharged in a state where water is further removed.

Meanwhile, while the skimmer 40 rotates as shown in FIGS. 4 and 5, the upper scum 51 is pushed into the inclined discharge pipe 90, and the lower scum 52 is upper scum 51 by the separator 30. It is isolated from and there is no flow even when the skimmer 40 rotates. Therefore, since there is no phenomenon in which the lower scum 52 and the inflow water are mixed, the floating efficiency due to the mixing of the lower scum 52 and the inflow water can be prevented. In other words, the grid separator 30 is located between the concentrated upper scum 51 and the lower scum 52 so that the skimmer 40 rotates on the upper portion of the grid separator 30 so that the upper scum ( Even when the 51 is pushed toward the inclined discharge pipe 90, no flow occurs in the lower scum 52 positioned below the grid separator 30, so that the lower scum 52 and the inflow water do not mix.

And the skimmer 40 is formed in a convex structure in the rotation direction while forming an acute angle between the inclined discharge pipe 90 and smoothly push the upper scum 51 to the outside of the floating separation tank (10). In addition, the skimmer 40 periodically removes the upper scum 51, which is concentrated in the flotation separation tank 10 and has been substantially removed, and is concentrated in the flotation separation tank 10 by sending it to the inclined discharge pipe 90. It is possible to maintain the concentration efficiency of the scum and at the same time prevent the degradation of the treatment efficiency due to the over-concentration of the scum.

For example, the flotation separator for treating high concentration organic wastewater according to the present invention can be used for various purposes such as sewage and livestock wastewater treatment for high concentration organic wastewater treatment.

10: float separation tank 20: bubble inlet pipe 21: bubble diffusion plate
22: space maintenance support 30: isolation plate 40: skimmer
41: elastic member 51: upper scum 52: lower scum
60: rotating shaft 70: flocculation reactor 80: influent inlet pipe
90: inclined discharge piping 100: pressure tank 101: overflow piping
102: connection piping 103: pressure pump 104: air injection means

Claims (14)

A floating separation tank into which floc flows along with the inflow water;
One end is installed in the lower part of the flotation tank to supply air bubbles into the flotation tank, thereby adhering the floc flowed into the flotation tank with the inflow water to form a bubble and floating it on the surface of the flotation tank. and;
A separator installed between the upper and lower scums formed while the floc adhered to the bubbles discharged from the bubble inlet pipe is floated on the surface of the floating separation tank;
A skimmer positioned at an upper portion of the separator and having one end connected to a rotating shaft installed at an inner center of an upper portion of the floating separator to remove the upper scum located at an upper portion of the separator while rotating by a rotation operation of the rotating shaft; Including but not limited to
The bubble inlet pipe is connected to the pressure tank, the pressure pump, the air injection means and the connection pipe connected to the lower portion of the floating separation tank so as to supply bubbles into the floating separation tank, the upper portion of the pressure tank by the overflow pipe It is connected with the flocculation tank to prevent the cavitation occurring in the pressure tank, reduce the pressure loss of the pressure tank, and supply the pressurized water without floc through the overflow pipe to the flocculation tank to lower the solids ratio in the flocculation tank. When the pressurized water is supplied to the flocculation tank, the microbubbles are attached to the floc so that the light floc can be supplied to the flotation separation tank to maximize the flotation effect of the floc in the separation separation tank.
The separator is provided between the upper and lower scums and is formed in a lattice shape to isolate the upper scum and the lower scum, thereby affecting only the upper scum positioned on the separator by the rotational operation of the skimmer and located under the separator. The lower scum to prevent flow by the skimmer's rotation operation to prevent the mixing of the lower scum and influent,
The skimmer is formed in a semi-circular convex toward the rotation direction to easily push the upper scum, the cut section of the skimmer is shaped like "L", the elastic member is connected to the skimmer end toward the inner wall of the floating separation tank,
The rotating shaft is installed in conjunction with an inverter to adjust the rotational speed of the skimmer to float the separation device for high concentration organic wastewater treatment.
delete The method according to claim 1,
The influent and floc flowing into the flotation tank are introduced through the inflow pipe connecting the flocculation tank and the flotation tank, and the inflow pipe is inclined 20 to 30 ° downward from the flocculation tank toward the flotation tank. The lower end of the floc discharge is located above the end of the bubble inlet pipe from which the bubble is discharged, the flotation separator for high concentration organic wastewater treatment, characterized in that it is installed to be located in the inner center of the flotation tank.
The method according to claim 1,
At one end of the upper side of the float separation tank above the separator, an inclined discharge pipe communicating with the inside of the floating separation tank is formed, and the inclined discharge pipe is inclined upward by 10 to 20 ° toward the upper scum and the upper scum is discharged. Floating separator for high concentration organic wastewater treatment, characterized in that the width is narrowed toward.
The method according to claim 1,
By installing a spacing support on one end of the bubble inlet pipe from which the bubbles are discharged, and installing a bubble diffusion plate on top of the spacing support, air bubbles discharged from one end of the bubble inlet pipe collide with the bubble diffusion plate to separate them. Flotation separator for high concentration organic wastewater treatment, characterized in that configured to spread evenly inside the tank.
The method according to claim 5,
Bubble diffusion plate is a flotation separator for high concentration organic wastewater treatment, characterized in that the bubble is composed of 1.5 ~ 2 times the size of the outlet diameter of the end of the bubble inlet pipe discharged.
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