Apparatus for continuous separation and discharge of floating and settled sludge provided with floating-sludge guidance means

Abstract

The present invention relates to an apparatus for continuous separation and discharge of floating and settled sludge provided with a floating-sludge guidance means. The apparatus of the present invention allows sludge that has settled due to gravity to be discharged and sludge that has risen to be collected and discharged by a sludge collector, and sprays cleansing water around the perimeter of a filtering net that filters treatment water, and additionally, the flow of the cleansing water is guided by a guide wall and the flow above the water surface is guided as well toward the center by the air supplied from above, thus allowing only the floating sludge to be most effectively separated and discharged.

Description

Continuous separation and discharge device for floating sludge and settled sludge equipped with floating sludge guide means

[0001] The present invention relates to a continuous separation and discharge device for floating sludge and settled sludge, which continuously separates and discharges floating sludge and settled sludge from various inflowing sewage and wastewater, and is equipped with a guide means to improve the discharge efficiency of the floating sludge.

[0002] Sewage and wastewater contain a variety of substances with different physical and chemical properties, including various organic components, ionic substances, and salt-form inorganic substances, so there are many problems in securing stable treatment water quality. To this end, sewage and wastewater treatment facilities are becoming larger, requiring a large treatment area and high treatment costs, resulting in serious economic problems.

[0003] Under these conditions, technologies have been developed to remove suspended solids during sewage and wastewater treatment. However, with the exception of efforts to remove decomposable and non-decomposable substances at each stage of water treatment and the development of membrane technology, few technologies are being effectively used industrially.

[0004] Recently, the severity of this problem in the treatment of sewage and wastewater has been recognized, and in-depth research is being conducted. However, the development of technology that can simultaneously satisfy treatment efficiency and treatment capacity at low cost has not yet been achieved.

[0005] A recently developed technology is the large-scale direct air flotation (DAF) tank. This technology has a high-liquid separation effect, but it is known to require a large area and have some problems with treatment efficiency.

[0006] Another technology is a filtration method using a large fiber membrane (cloth media). Initially, the removal efficiency is excellent, especially for particulate matter, but as the fiber becomes clogged and metabolites are secreted from microorganisms, many problems arise during use.

[0007] As a technology to solve these problems, “Wastewater treatment device and treatment method using a high-liquid separation device” (Korean Patent Publication No. 10-2058956, Patent Document 1) has been disclosed.

[0008] The above patent document 1 is provided with a collision plate and a rotation guide section that effectively mix the introduced raw water and chemicals, thereby increasing mixing efficiency and increasing operating costs, and is provided with a plurality of sludge guide sections and spray nozzles to facilitate collection and discharge of the scum layer.

[0009] Figure 7 illustrates the device of Patent Document 1.

[0010] Looking at the drawing, a discharge pump (240) is provided on the outer periphery of the inner tube (300) where chemicals and raw water are mixed to discharge scum, which is a floating sludge. It can be seen that this discharge pump is divided into several parts and positioned radially around the inner tube (300) because the space between the inner tube (300) and the outer tube (200) forms a donut-shaped space.

[0011] In addition, it can be seen that the structure has a guide wall (240) provided between adjacent discharge pumps (240) due to this donut-shaped space.

[0012] Here, it can be seen that the first sensor (216) for measuring the concentration of scum is installed in one of several spaces surrounded by the guide wall (240).

[0013] This structure has a problem in that the gap between the discharge pump (240) and the filter net (211) of the receiving tank (210) is narrow, so scum quickly sticks to the filter net, shortening the cleaning cycle of the filter net.

[0014] In addition, the first sensor (216) for measuring the scum concentration has the problem that its position is eccentric and that the accuracy of the pump operation for discharging the scum is reduced due to malfunction caused by scum such as hair sticking to it.

[0015] In addition, there is a problem in which hair and other things contained in the scum are absorbed and clumped together at the entrance of the pipe for discharging the scum, narrowing or blocking the entrance, making it difficult to suck in the scum.

[0016] Meanwhile, the settled sludge is suctioned and discharged through the first sludge discharge pipe (214) connected to the bottom of the main body and the second sludge discharge pipe (215) positioned downward on the upper part of the bottom of the main body. However, due to the viscosity of the sludge settled on the bottom of the main body, when the suction pump pressure is applied, only the sludge is suctioned on the bottom of the main body, causing a cavity to be created, which also causes the discharge of the settled sludge to be difficult.

[0017]

[0018] *Prior art literature*

[0019] (Patent Document 1) KR 10-2058956 (December 18, 2019)

[0020] The continuous separation and discharge device for floating sludge and settled sludge of the present invention is intended to solve the problems occurring in the above-mentioned conventional technology, and the raw water (treated water to be treated, hereinafter referred to as 'treated water') is introduced from the side in the middle of the main body, so that no obstacle is created in the center of the upper space of the main body, and the sludge collector is positioned alone in the center of the main body to form a sufficient gap between the sludge collector and the filter net, thereby minimizing the phenomenon of floating sludge sticking to the filter net and extending the filter net cleaning cycle.

[0021] In particular, a guide wall is provided above the water surface to guide the flow of washing water for washing the filter net toward the center, and a circular air supply pipe is installed in the guide wall, and an air injection nozzle is provided in the air supply pipe, so that not only the flow of washing water but also the air flow above the water surface is guided to the sludge collector, thereby inducing the floating sludge toward the center, thereby enabling efficient discharge of the floating sludge.

[0022] In order to solve the above-mentioned problem, the continuous separation and discharge device for floating sludge and settled sludge having a floating sludge guide means of the present invention comprises a main body (10) having a cylindrical shape in which a treatment space (11) is formed to accommodate treated water containing floating sludge and settled sludge therein, the upper part of which is formed with an expanded portion (12) having a larger diameter than the middle part, and the lower part of which is formed with a tapered portion (13) having a tapered shape in which the inner diameter gradually decreases with respect to the middle part, wherein the upper surface of the expanded portion (12) is formed to be rounded toward the center, and a guide wall (150) extending downward is installed radially based on the center; a socket installation member (20) connected to the inner surface of the main body (10) through a plurality of connecting members (21) and installed in the center of the treatment space (11), and having a socket installation hole (22) formed in the center; A socket (30) having a pipe shape with a closed upper surface and installed by being fitted into the socket installation hole (22), and having a pipe connection hole (31a) formed in the center of the upper surface; a treated water supply pipe (40) having one side extending outside the side wall of the main body (10) to supply the treated water to the main body (10), and an end being fitted into the pipe connection hole (31a) to supply the treated water into the socket (30); A sludge discharge pump (51) is connected to the pipe, one side of which extends outward from the main body (10), and the other side is bent upward while positioned at the center of the upper part of the processing space (11), and a funnel-shaped sludge collector (52) is connected to the end at a position corresponding to the upper part of the socket installation member (20), so that sludge is collected through the sludge collector (52) and discharged to the outside of the main body (10), wherein the sludge collector (52) is connected to a sludge discharge pipe (50) positioned lower than the guide wall (150);A filter net (60) having a lower portion connected to the lower portion of the expansion portion (12) and an upper portion extending to the upper portion of the main body (10) and installed to surround the sludge collector (52) and the guide wall (150) so as to filter fine foreign substances in the treated water that has reached the inside of the expansion portion (12); a floating sludge induction device (70) positioned between the filter net (60) and the inner surface of the expansion portion (12) to spray water toward the filter net (60) to wash the filter net and to guide the floating sludge in the treated water that has reached the expansion portion (12) by being guided by the guide wall (150) to move to the sludge collector (52); A treated water discharge pipe (80) which is connected to the lower part of the above-mentioned expansion part (12) on one side so that the floated sludge is discharged by rising within the treatment space (11) and the treated water filtered by the filter net (60) is discharged, and a part of the pipe is formed as a downwardly inclined slope (81); a settled sludge discharge pipe (90) which is connected to the lower part of the tapered part (13) of the above-mentioned main body (10) and has a settled sludge suction pump (91) connected to the pipe so that the settled sludge settled within the tapered part (13) is discharged; It is configured to include an air supply pipe (160) that is installed to surround the upper circumference of the sludge collector (52) while being connected to the above guide walls (150), is configured to receive air from the outside, and has air injection nozzles (161) installed radially based on the center so as to direct the air flow above the treated water surface toward the sludge collector (52).

[0023] In the above configuration, the air injection nozzle (161) is characterized in that it is installed so as to be inclined downward toward the sludge collector (52).

[0024] In the above configuration, a through hole (151) is formed in the guide wall (150), a bearing is installed on the inner surface of the through hole (151), and a pipe for supplying external air to the air supply pipe (160) is made of a flexible pipe, so that the air supply pipe (160) is characterized in that it is configured to be rotatable around the sludge collector (52).

[0025] In the above configuration, a driving motor (170) is installed at the center of the upper surface of the main body (10), and the shaft of the driving motor (170) is connected to the air supply pipe (160) through a connecting member (171) so that the air supply pipe (160) rotates by the operation of the driving motor (170).

[0026] In the above configuration, a plurality of soft auxiliary guide members (180) are installed radially with respect to the sludge collector (52) at an angle on a plane toward the lower portion of the air supply pipe (160).

[0027] According to the present invention, the raw water (the treated water to be treated, hereinafter referred to as “treated water”) is introduced from the side of the middle of the main body, so that no obstacle is created in the center of the upper space of the main body, and the sludge collector is positioned alone in the center of the main body, thereby forming a sufficient gap between the sludge collector and the filter net, thereby minimizing the phenomenon of floating sludge sticking to the filter net, thereby extending the filter net cleaning cycle.

[0028] In particular, a guide wall is provided above the water surface to guide the flow of washing water for washing the filter net toward the center, and a circular air supply pipe is installed in the guide wall, and an air injection nozzle is provided in the air supply pipe, so that not only the flow of washing water but also the air flow above the water surface is guided to the sludge collector, thereby inducing the floating sludge toward the center, and thus efficient discharge of the floating sludge can be achieved.

[0029] Fig. 1 is a partially cut perspective view showing a continuous separation and discharge device for floating sludge and settled sludge of the present invention.

[0030] Figure 2 is a cutaway perspective view showing the installation state of the sludge collector and the sludge detection sensor in the present invention.

[0031] Figure 3 is a partially cut exploded perspective view showing the installation state of the socket installation member, socket, and treatment water supply pipe in the present invention.

[0032] Fig. 4 is a partial cutaway perspective view showing the bonding state of Fig. 3.

[0033] Figure 5 is a perspective view and a cross-sectional view showing a state in which a cut portion is provided in a sloped portion of a treated water discharge pipe in the present invention and an auxiliary filter net is installed in the cut portion.

[0034] Fig. 6 is a cut-away exploded perspective view showing an extension part of the main body for replacing the filter net in the present invention.

[0035] Figure 7 is a drawing showing a conventional device for continuously separating and discharging floating sludge and sedimentation sludge.

[0036] *Detailed explanation of the main symbols in the drawing*

[0037] 10: Body, 11: Processing space

[0038] 12: Extension, 13: Tapered

[0039] 14: Cover installation hole, 14a: Mounting bracket

[0040] 15: Cover, 15a: Filter net installation groove

[0041] 16: Lower support member, 20: Socket installation member

[0042] 21: connecting member, 22: socket installation hole

[0043] 23: Socket mounting part, 23a: Through hole

[0044] 30: Socket, 31: Upper housing

[0045] 31a: Pipe connector, 31b: Assembly protrusion

[0046] 31c: Temporary storage box, 31d: First screw thread

[0047] 31e: Packing, 32: Lower housing

[0048] 32b: Variable section, 40: Treated water supply pipe

[0049] 50: sludge discharge pipe, 51: sludge discharge pump

[0050] 52: sludge collector, 52a: winding unit

[0051] 60: Filter net, 70: Floating sludge induction device

[0052] 71: Winding tube, 72: Injection nozzle

[0053] 73: Water supply pipe, 73a: Water supply pump

[0054] 80: Treated water discharge pipe, 80a: Branch pipe

[0055] 81: slope, 81a: cut

[0056] 81b: Packing installation groove, 82: Auxiliary filter net

[0057] 83: Packing, 84: Filter net support member

[0058] 85: Foreign matter collection box, 90: Settled sludge discharge pipe

[0059] 91: Sedimentation sludge suction pump, 100: Cavity prevention member

[0060] 101: Central axis, 102: Sludge guide member

[0061] 110: Sludge detection sensor, 111: Sensor body

[0062] 12: connecting line, 113: detection rod

[0063] 114: Round part, 120: Density sensor

[0064] 130: Control device, 140: External housing

[0065] 150: Guide wall, 151: Through hole

[0066] 152: connecting pipe, 160: air supply pipe

[0067] 161: Air injection nozzle, 170: Drive motor

[0068] 171: connecting member, 180: auxiliary guide member

[0069] Hereinafter, the continuous separation and discharge device for floating sludge and settled sludge of the present invention will be described in detail through the attached drawings.

[0070] The continuous separation and discharge device of the floating sludge and settled sludge of the present invention is largely composed of a main body (10), a socket installation member (20), a socket (30), a treated water supply pipe (40), a floating sludge discharge pipe (50), a filter net (60), a floating sludge induction device (70), a floating sludge discharge pipe (80), a settled sludge discharge pipe (90), and an air supply pipe (160).

[0071] The main body (10), which is a component of the present invention, takes a cylindrical shape in which a treatment space (11) is formed inside in which treated water (sewage or wastewater including floating sludge and settled sludge) is received, as shown in FIG. 1.

[0072] As shown in the drawing, the upper part of the processing space (11) is formed of an expanded part (12) that is wider than the middle part, and the lower part is formed of a tapered part (13) that has a tapered shape in which the inner diameter gradually decreases based on the middle part.

[0073] In addition, the main body (10) can be installed inside the external housing (140).

[0074] As shown in Fig. 1, the main body (10) is formed in a round shape toward the center on the upper surface of the extension (12), and a guide wall (150) extending downward is installed radially based on the center.

[0075] As shown in the cross-sectional view at the top of Fig. 1, the guide walls (150) are formed to be round in the same direction based on the center of the main body (10), so that the washing water moves along the guide walls (150) and falls onto the surface of the water, thereby inducing a constant counterclockwise flow of washing water on the surface of the water, and as a result, the flow of treated water containing floating sludge on the surface of the water can also be induced in the same direction.

[0076] The socket installation member (20), which is a component of the present invention, is located in the center of the processing space (11).

[0077] For this purpose, the socket installation member (20) has a number of connecting members (21) radially connected to the outside, and these connecting members (21) are connected to the inner surface of the main body.

[0078] A socket installation hole (22) for installing a socket (30) is formed in the center of the socket installation member (20).

[0079] At this time, as shown in Fig. 3, a socket mounting portion (23) for mounting a socket (30) is formed in a step-like manner around the socket installation hole (22), and a part of the socket mounting portion (23) is formed with a through hole (23a) extending upward and downward to facilitate mounting and dismounting of the socket (30).

[0080] The socket (30), which is a component of the present invention, is connected at one end to the treatment water supply pipe (40) and is detachably installed in the socket installation member (20). As shown in Fig. 3, it is formed in a pipe shape with a closed upper surface and is installed by being fitted into the socket installation hole (22).

[0081] In addition, a pipe connection hole (31a) is formed in the center of the upper surface, into which a treatment water supply pipe (40) is inserted.

[0082] Looking at the drawing, the inner wall surface of the pipe connection hole (31a) extends downward from the upper surface of the socket (30), and a groove for installing packing is processed in the wall surface, and packing (31e) is provided in this groove so that watertightness can be achieved when forcibly fitted into the treatment water supply pipe (40).

[0083] This socket (30) may have an integrated structure in which the upper housing (31) and the lower housing (32) in the drawing are integrally connected, but it is more preferable to have a separate structure as shown in the drawing.

[0084] The upper housing (31) has an assembly protrusion (31b) formed on the outer surface thereof so as to be seated in the socket mounting portion (23) and to selectively pass through the through hole (23a) depending on rotation.

[0085] By doing this, the upper housing (31) is moved from the lower side to the upper side of the socket installation member (20) so that the assembly protrusion (31b) passes through the through hole (23a), and then rotated, so that the assembly protrusion (31b) is seated in the socket mounting portion (23), enabling easy detachable installation.

[0086] Meanwhile, a temporary storage tank (31c) for temporarily storing the treated water can be installed inside the upper housing (31) while being spaced apart from the inner surface and the upper surface.

[0087] The temporary storage tank (31c) can be configured to store chemicals for chemical treatment, and can also be configured to have a mesh structure to allow the treated water to be subjected to primary filtration, and can also serve as a kind of blocking member to prevent the sludge of the treated water from rising up inside the treatment space (11) and clogging the treated water supply pipe (40).

[0088] In addition, a first screw thread (31d) is formed on the lower outer surface of the upper housing (31) so as to be screw-connected with the lower housing (32).

[0089] The lower housing (32) also has a cylindrical tube shape with an empty interior.

[0090] A second screw thread (32a) that is screw-connected to the first screw thread (31d) is formed on the upper inner surface of the lower housing (32), so that it is attached to and detached from the upper housing (31).

[0091] In addition, the lower part of the lower housing (32) may be formed as a variable portion (32b) whose outer diameter gradually decreases and then increases again.

[0092] Forming this variable portion (32b) serves to ensure smooth downward movement of the treated water while minimizing the inflow of the sludge into the pipe as it rises.

[0093] These lower housings (32) can be installed in a replaceable manner with different lengths depending on the height of the main body (10) or the distance between the position of the socket (30) and the lower cavity prevention member (100), or can be configured to be adjusted in length by being made of a corrugated pipe as shown in FIG. 3.

[0094] As shown in the drawing, the treatment water supply pipe (40), which is a component of the present invention, extends through the middle part of the main body (10) through the side wall of the main body (10), and the end is bent vertically downward from the center of the treatment space (11) so that the end is fitted into the pipe connection hole (31a) to supply the treatment water into the inside of the socket (30).

[0095] That is, it is configured to supply treated water from an external treated water supply source into the socket (30).

[0096] This treatment water supply pipe (40) is different from the one in Patent Document 1 in which treatment water is supplied from the upper part of the main body, thereby narrowing the treatment space for the floating sludge.

[0097] That is, by not blocking the inside of the expansion section (12) and providing space for the sludge collector (32) to be located in the center, the treatment efficiency of the floating sludge can be improved and the cleaning cycle can be extended.

[0098] The sludge discharge pipe (50), which is a component of the present invention, has one side of the pipe extended to the outside of the main body (10), and a sludge discharge pump (51) is connected to the pipe.

[0099] The other side of the pipe extends into the processing space (11), and the end is bent upward at the center of the upper part of the processing space (11).

[0100] In this section, a funnel-shaped sludge collector (52) is connected to a position corresponding to the upper portion of the socket installation member (20), so that the floating sludge is collected through the sludge collector (52) and discharged to the outside of the main body (10).

[0101] It is preferable that the upper circumference of the sludge collector (52) is configured with a winding portion (52a) that is rolled downwards as shown in Fig. 2 to prevent floating sludge such as hair from being attached to the upper circumference of the sludge collector (52).

[0102] If the end of the sludge collector (52) is finished in a general manner, foreign substances such as hair may get caught on the end and become located, and other floating sludge may be absorbed thereto, which may block the inlet of the sludge collector (52) or narrow the diameter, making it difficult for the floating sludge to be sucked in and discharged smoothly.

[0103] In addition, the sludge detection performance of the sludge detection sensor (110) is not maintained, so the sludge discharge pump (51) cannot operate in a timely manner.

[0104] The above sludge collector (52) is characterized by being located at a lower position than the guide wall (150).

[0105] That is, the guide wall (150) is positioned above the treated water surface to guide the flow of washing water and not to obstruct the flow of treated water below the surface.

[0106] The filter net (60), which is a component of the present invention, is installed such that the lower part is connected to the lower part of the expansion part (12), and the upper part extends to the upper part of the main body (10) and wraps around the sludge collector (52), so as to filter fine foreign substances in the treated water that have reached the inside of the expansion part (12).

[0107] Fig. 6 illustrates an example of a desirable filter net (60) installation structure.

[0108] Looking at the drawing, it can be seen that a cover installation hole (14) is formed in the center of the upper surface of the expansion part (12), a fixing protrusion (14a) is formed around the cover installation hole (14), and a lower support member (16) with a groove formed on the upper surface is installed on the lower inner surface of the expansion part (12).

[0109] In addition, a cover (15) is provided on which the lower part of the outer surface is mounted on the above-mentioned mounting jaw (14a), and a filter net installation groove (15a) is formed on the lower part of the cover (15) into which the upper part of the filter net (60) is fitted.

[0110] At this time, the filter net installation groove (15a) and the groove of the lower support member (16) are aligned vertically, and the upper and lower parts of the filter net (60) are respectively fitted together.

[0111] That is, while the cover (15) is lifted, the lower part of the filter net (60) is fitted into the lower support member (16), and then the upper part of the filter net (60) is fitted into the filter net installation groove (15a) of the cover (15), thereby allowing the lower part of the outer surface of the cover (15) to be seated on the mounting protrusion (14a), thereby allowing the filter net (60) to be easily installed.

[0112] This structure makes it easy to install and replace the filter net (60).

[0113] The floating sludge induction device (70), which is a component of the present invention, is composed of a winding pipe (71) installed along the periphery of the filter net (60) and located between the filter net (60) and the inner surface of the expanded portion (12), a spray nozzle (72) installed on the winding pipe (71) toward the filter net (60) to spray water to wash the filter net and move the floating sludge in the treated water that has reached the expanded portion (12) to the sludge collector (52), and a water supply pipe (73) connected to the winding pipe (71) at one end and connected to a water supply pump (73a) on the pipe to supply water to the winding pipe (71).

[0114] Here, the injection nozzles (72) are installed at regular intervals on the winding pipe (71) and are directed toward the center so that the water flow is directed toward the sludge collector (52).

[0115] At this time, a branch pipe (80a) connecting the sludge discharge pipe (80) and the water supply pipe (73) is provided, and a branch control valve is installed at each branch point so that the sludge discharged through the sludge discharge pipe (80) is sent to the water supply pipe (73) after being separated, thereby saving water supplied to the sludge collector (52).

[0116] This makes it possible to wash the filter net (60) and guide water flow without a separate water source.

[0117] At this time, if an injector that supplies a purification treatment chemical is connected to the sludge discharge pipe (80) before reaching the branch pipe (80a), the treated water reaching the branch pipe (80a) is purified, so that it can be washed and water flow induced with cleaner water.

[0118] As shown in Fig. 1, the treated water discharge pipe (80), which is a component of the present invention, is connected on one side to the lower part of the expanded portion (12), more specifically, to the bottom surface of the expanded portion (12) of the outer area of ​​the filter net (60), so that the floated sludge is discharged by rising within the treatment space (11), and the treated water filtered by the filter net (60) is discharged.

[0119] At this time, it is preferable that the treated water discharge pipe (80) be formed as a sloped portion (81) with a portion of the pipe sloped downward.

[0120] Looking at Fig. 5, the inclined portion (81) is formed with two cut portions (81a) cut on the back and front respectively so as to form a straight line downward in the forward and backward directions, and an auxiliary filter net (82) is provided that is fitted on both sides of the two cut portions (81a) and the middle portion is located inside the inclined portion (81) to filter the treated water moving through the inclined portion (81).

[0121] In this configuration, when the treated water passing through the inclined portion (81) of the treated water discharge pipe (80) comes into contact with the auxiliary filter net (82), fine sludge (or foreign substances) in the treated water are filtered by the auxiliary filter net (82), thereby further improving the sludge separation performance.

[0122] However, since the above-mentioned auxiliary filter (82) is installed by cutting the treated water discharge pipe (80), leakage of treated water through the cut portion (81a) is bound to occur.

[0123] At this time, as a measure to minimize the amount of water leaking, a packing installation groove (81b) is formed along the circumference of the inclined portion (81) in a direction perpendicular to the pipe so that one side corresponds to the rear bottom of the auxiliary filter (82), and a circular packing (83) can be installed along the packing installation groove (81b) so as to protrude toward the inner surface of the inclined portion.

[0124] This packing (83) cannot completely prevent leakage through the cut portion (81a) by itself, but it minimizes leakage of treated water through the rear cut portion (81a) and induces the treatment water to fall from the upper portion of the front cut portion (81a), thereby minimizing leakage from the front cut portion (81a).

[0125] Meanwhile, a filter net support member (84) may be installed parallel to the auxiliary filter net (82) to support the auxiliary filter net (82) protruding through the front side cut-out (81a), and a foreign matter collection box (85) for collecting foreign matters filtered by the auxiliary filter net (82) may be installed at the bottom of the filter net support member (84).

[0126]

[0127] The sedimentation sludge discharge pipe (90), which is a component of the present invention, is connected to the lower portion of the tapered portion (13) of the main body (10) as shown in FIG. 1, and a sedimentation sludge suction pump (91) is connected to the pipe so that the sedimentation sludge settled inside the tapered portion (13) is discharged.

[0128] As shown in Fig. 1, the air supply pipe (160), which is a component of the present invention, is connected to the lower portion of the guide walls (150) and is installed to surround the upper circumference of the sludge collector (52).

[0129] In addition, the air supply pipe (160) is connected to a compressor or ventilator for supplying air through a connection pipe (162).

[0130] In the air supply pipe (160), air injection nozzles (161) are installed radially from the center toward the sludge collector (52).

[0131] Accordingly, the air flow above the treated water surface is guided toward the sludge collector (52).

[0132] At this time, it is preferable that the air injection nozzle (161) be installed so as to be inclined downward toward the sludge collector (52) so as to ensure smooth air flow.

[0133] To induce more desirable air flow, the air supply pipe (160) may be configured to be rotatable.

[0134] Specifically, a through hole (151) is formed in the above guide wall (150), and a bearing (not shown) is installed on the inner surface of the through hole (151), and the above-described connecting pipe (162) may be formed of a flexible pipe.

[0135] This configuration allows the air supply pipe (160) to rotate around the sludge collector (52).

[0136] It can be rotated by the spray pressure of the washing water, the repulsive force of the supplied air, etc. without a separate power for rotation.

[0137] Alternatively, a forced rotation method may be applied, in which a drive motor (170) shown only in the plan view is installed at the center of the upper surface of the main body (10), and the shaft of the drive motor (170) is connected to the air supply pipe (160) through a connecting member (171) so that the air supply pipe (160) can be rotated by the operation of the drive motor (170).

[0138] In this case, air flow can be induced more actively.

[0139] At this time, the flow of the floating sludge can be further induced by utilizing the rotating air supply pipe (160).

[0140] Specifically, a plurality of auxiliary guide members (180), such as soft cloth, may be installed radially with respect to the sludge collector (52) at the lower portion of the air supply pipe (160) while being inclined on a plane toward the sludge collector (52).

[0141] The auxiliary guide member (180) extends to the surface or very close to the surface to guide the floating sludge on the surface toward the center under physical contact.

[0142] In the above configuration, an anti-cavity member (100) can be installed at the bottom of the main body (10).

[0143] The pupil-prevention member (100) is composed of a central axis (101) that protrudes vertically upward from the center of the inside of the tapered portion (13) through a connecting member, and a sludge guide member (102) that is connected to the upper end of the central axis (101) and protrudes obliquely so that the lower part forms a circular plate shape and the upper part forms a conical shape.

[0144] Normally, the sedimentation sludge suction pump (91) does not operate periodically, but operates when a certain amount of sedimentation sludge has gathered inside the tapered section (13). At this time, the portion of the sedimentation sludge in the area in contact with the tapered section (13) has high viscosity and is strongly attached to the tapered section (13).

[0145] Accordingly, when the sedimentation sludge suction pump (91) operates, the sedimentation sludge in the area in contact with the tapered portion (13) remains attached to the wall surface, and only the sedimentation sludge in the area directly above the discharge pipe is discharged.

[0146] The cavity prevention member (100) rather suppresses the phenomenon of sediment sludge gathering in the area directly above the discharge pipe and, when the sediment sludge suction pump (91) is operated, induces the suction pressure to be in the area in contact with the tapered portion (13), thereby facilitating the discharge of sediment sludge and suppressing the formation of cavities.

[0147] Additionally, a sludge detection sensor (110) may be provided as shown.

[0148] The floating sludge detection sensor (110) detects the level of floating sludge directly above the sludge collector (52) to ensure that the operating timing of the floating sludge discharge pump (51) is accurately determined.

[0149] For this purpose, the sludge detection sensor (110) has a sensor body (111) installed in the upper center of the expansion part (12) as shown in FIGS. 1 and 2, three connecting lines (112) are connected to the lower part of the sensor body (111), and a detection rod (113) is installed in each connecting line (112). The detection rods (113) are positioned directly above the sludge collector (52), but the heights of each detection rod (113) are different.

[0150] Accordingly, it is configured to detect the level of the floating sludge directly above the sludge collector (52).

[0151] At this time, if the lower part of the detection rod (113) is angled or sharp, foreign substances such as hair may attach to the detection rod (113), causing loss of detection performance or problems with detection performance. Therefore, as shown in the drawing, it is preferable that the lower part of the detection rod (113) be formed of a rounded portion (114).

[0152] This sludge detection sensor (110) may be composed of a water level sensor, a position sensor, a concentration sensor, a light sensor, etc.

[0153] In addition, a density detection sensor (120) may be provided.

[0154] The density detection sensor (120) is installed on the inner surface of the tapered portion (13) to detect the density or concentration of the sedimentation sludge settled inside the tapered portion (13) to confirm the operation time of the sedimentation sludge suction pump (91), and may be formed of a known contact or non-contact density detection sensor.

[0155] It is obvious that a control device (130) is provided for the operation of the above devices.

[0156] The control device (130) is electrically connected to the density detection sensor (120) and the sedimentation sludge suction pump (91), and controls the operation of the sedimentation sludge suction pump (91) according to the density of the sedimentation sludge measured by the density detection sensor (120).

[0157] In addition, it is electrically connected to the above-mentioned sludge detection sensor (110) and the sludge discharge pump (51) to control the operation of the sludge discharge pump (51) according to the level of the sludge measured by the sludge detection sensor (110).

[0158] In addition, it is electrically connected to the sludge induction device (70) to control the operation of the water supply pump (73a) of the sludge induction device (70), and is connected to the drive motor (170) to control the operation of the drive motor (170).

[0159] In addition, the control device (130) will be configured to control the opening and closing of other valves, and in this case, each valve will be configured as an electronic control valve.

[0160] According to the present invention, the treated water supplied into the socket (30) through the treated water supply pipe (40) passes through the inside of the socket (30) and the water level gradually rises within the treatment space (11) inside the main body (10) to reach the point where the sludge discharge pipe (80) of the expansion part (12) is connected.

[0161] In this state, the settled sludge moves into the tapered section (13) and accumulates on the inner surface of the tapered section (13) by the guide of the cavity-preventing member (100).

[0162] In this state, when the density exceeds a certain standard as determined by the density detection sensor (120), the sludge is discharged through the operation of the sedimentation sludge suction pump (91) under the control of the control device (130).

[0163] Meanwhile, the floating sludge in the treated water reaches the vicinity of the expansion section (12) near the water surface and moves directly above the sludge collector (52) by the operation of the floating sludge induction device (70). At this time, the control device (130) controls the operation of the floating sludge discharge pump (51) based on detection by the floating sludge detection sensor (110), thereby causing the sludge to be discharged.

[0164] This process is carried out continuously, and as described above, based on sufficient space inside the expansion section (12), the shape of the end of the sludge collector (52) located in the center of the space, the floating sludge detection sensor (110) located directly above the sludge collector (52), and the shape of the lower part of the detection rod (113) of the floating sludge detection sensor (110), detection of floating sludge is smoothly performed, thereby suppressing malfunction.

[0165] In particular, the flow of washing water is guided toward the center by the guide wall (150), and air is guided toward the center through the air supply pipe (160), so that the floating sludge on the water surface is naturally guided toward the center, thereby maximally suppressing the blockage of the filter net (160).

[0166] The present invention can be utilized for wastewater treatment in various fields such as living, industry, and agriculture.

Claims

1. In a continuous separation and discharge device for floating sludge and settled sludge, A main body (10) having a cylindrical shape in which a treatment space (11) is formed inside to accommodate treatment water containing sludge and sedimentation sludge, and the upper part is formed with an expanded part (12) having a larger diameter than the middle part, and the lower part is formed with a tapered part (13) having a tapered shape in which the inner diameter gradually decreases based on the middle part, and the upper surface of the expanded part (12) is formed to be rounded toward the center, and a guide wall (150) extending downward is installed radially based on the center; A socket installation member (20) connected to the inner surface of the main body (10) through a plurality of connecting members (21) and installed in the center of the processing space (11), and having a socket installation hole (22) formed in the center; A socket (30) which is installed by being fitted into the socket installation hole (22) and is formed in the shape of a tube with a closed upper surface, and has a pipe connection hole (31a) formed in the center of the upper surface; A treatment water supply pipe (40) having one side extending outside the side wall of the main body (10) to supply the treatment water to the main body (10), and having an end fitted into the pipe connection hole (31a) to supply the treatment water into the inside of the socket (30); A sludge discharge pump (51) is connected to the pipe, one side of which extends outward from the main body (10), and the other side is bent upward while positioned at the center of the upper part of the processing space (11), and a funnel-shaped sludge collector (52) is connected to the end at a position corresponding to the upper part of the socket installation member (20), so that sludge is collected through the sludge collector (52) and discharged to the outside of the main body (10), wherein the sludge collector (52) is connected to a sludge discharge pipe (50) positioned lower than the guide wall (150); A filter net (60) is installed so as to surround the sludge collector (52) and the guide wall (150) while the lower part is connected to the lower part of the above-mentioned expansion part (12) and the upper part is extended to the upper part of the above-mentioned main body (10) and is configured to filter fine foreign substances in the treated water that has reached the inside of the expansion part (12); A floating sludge induction device (70) located between the filter net (60) and the inner surface of the expansion part (12) to wash the filter net by spraying water toward the filter net (60) and to guide the floating sludge among the treated water that has reached the expansion part (12) by being guided by the guide wall (150) to move to the sludge collector (52); A treated water discharge pipe (80) in which one side is connected to the lower part of the above-mentioned expansion section (12) so that the sludge floats up and is discharged within the treatment space (11) and the treated water filtered by the filter net (60) is discharged, and a portion of the pipe is formed as a downwardly inclined slope (81); A sedimentation sludge discharge pipe (90) connected to the lower part of the tapered portion (13) of the main body (10) and having a sedimentation sludge suction pump (91) connected to the pipe so that the sedimentation sludge settled inside the tapered portion (13) is discharged; It is installed to surround the upper circumference of the sludge collector (52) while being connected to the above guide walls (150), and is configured to receive air from the outside, and includes an air supply pipe (160) in which an air injection nozzle (161) is installed radially based on the center so as to direct the air flow above the treated water surface toward the sludge collector (52). A continuous separation and discharge device for floating sludge and settled sludge equipped with a floating sludge guide means.

2. In paragraph 1, The above air injection nozzle (161) is characterized in that it is installed so as to be inclined downward toward the sludge collector (52). A continuous separation and discharge device for floating sludge and settled sludge equipped with a floating sludge guide means.

3. In paragraph 2, A through hole (151) is formed in the above guide wall (150), and a bearing is installed on the inner surface of the through hole (151). The connecting pipe (162) for supplying external air to the air supply pipe (160) is made of a flexible pipe. The above air supply pipe (160) is characterized in that it is rotatable around the sludge collector (52). A continuous separation and discharge device for floating sludge and settled sludge equipped with a floating sludge guide means.

4. A driving motor (170) is installed at the center of the upper surface of the main body (10), and the shaft of the driving motor (170) is connected to the air supply pipe (160) through a connecting member (171) so that the air supply pipe (160) rotates by the operation of the driving motor (170). A continuous separation and discharge device for floating sludge and settled sludge equipped with a floating sludge guide means.

5. In paragraph 4, The lower portion of the above air supply pipe (160) is characterized in that a plurality of soft auxiliary guide members (180) are installed radially with respect to the sludge collector (52) and inclined on a plane toward the sludge collector (52). A continuous separation and discharge device for floating sludge and settled sludge equipped with a floating sludge guide means.

Images