KR101053942B1 - Sludge and scum eliminator of circular settler with scum supervisory control means - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge collector that effectively removes sludge that has precipitated and scum that floats on the water by using a scum supervisory control means in a circular sedimentation basin used in a water treatment plant or a sewage and wastewater treatment plant.

An object of the present invention is to completely remove the sludge precipitated sludge and floating on the water surface using the monitoring control means in the circular sedimentation basin, and to adjust the drainage time required for scum removal according to the amount of scum to minimize the drainage To provide a sludge collector.

To this end, a sludge collection rake arm is installed in the lower part of the central column of the sludge collector of the circular sedimentation basin, and the central rectification barrel is fixed in concentric circles on the upper part of the central column, and the radial direction of the sedimentation basin outside or in the central column is The scum collection arm was integrally formed and installed, and the scum collection plate was freely installed on the scum collection arm, and the bottom of the scum collection plate was submerged in water.

The inner and outer sides of the scum collecting plate were attached with a scum shielding plate so as to contact the central commutation passing scum storage plate, respectively, to prevent scum from escaping.

From the outside of the central commutator to the scum box installed outside the outer wall of the circular sedimentation basin, a semi-circular cross section or a quadrilateral cross-section fixed scaffold is installed horizontally, and the front side of the fixed scum trap is submerged in water and the back side is water surface. It was installed upward, and an electric drain valve was installed at the outer end connected to the scum box.

In the scum box, a scum screen or a mechanical fine scum screen device was installed to divide the scum into a solid material and a separation liquid.

Limit switches are installed at the front and rear positions of the fixed scum trap on the outer wall of the circular sedimentation basin, and a scum sensor is installed on the upper slab of the circular sedimentation cell where the fixed scum trap is located, and the signals of the two limit switches and the scum of the scum sensor are installed. Judging the signal, the opening and closing time of the electric drain valve was automatically adjusted according to the amount of scum.

The present invention can completely remove the sludge and scum on the surface by using the scum supervisory control means to improve the water quality of the supernatant, to maintain aesthetic cleanliness, to prevent the generation of odor or pests, and to minimize the amount of water consumed to remove scum It has an effect.

Round Settler, Sludge Collector, Scum Removal, Supervisory Control, Scum Sensor

Description

Sludge and scum remove equipment with supervisory control device of scum in circular sedimentation basin}

The present invention is a technology for removing the sludge and scum of the circular sedimentation used in water supply and sewage, wastewater, livestock wastewater, manure treatment plant, etc., in detail the applicant's prior registration No. 0759848 (2007.09.12) And a scum supervisory control means for automatically adjusting the opening / closing time of the electric drain valve according to the amount of scum on the water surface by using supervisory control means. Description of the sludge collector of sedimentation basins.

The conventional method of removing scum from a circular sedimentation basin is to install a short scum box on the outer circumference of the circular sedimentation basin, and the scum removal arm attached to the sludge collector collects the scum on the surface and transports the scum to the scum box. The scum collection plate, which is installed in the radial direction of the circular sedimentation basin, is installed in the radial direction of the circular sedimentation basin, and the scum removal pipe is installed horizontally on the water horizontally, and the radially long scum collecting plate collects the scum to remove scum. After being pushed into the tube, it was transferred to the outside of the circular sedimentation basin to separate the solids and the separation liquid from the scum screen, and the solids were transferred to the outside for disposal, and the separation liquid was returned to the treatment plant for further treatment.

In the scum eliminator where the scum box is installed on the outside of the circular settler and the scum removal arm collects the scum and pushes it toward the scum box, the scum is not pushed toward the outer scum box but continues to be centered on the surface of the circular settler. When floating in concentric circles, scum on the water could not be completely removed.

In addition, the scum is spaced between the scum collection plate and the scum transfer pipe in the manner of collecting and pushing the scum into the scum transfer pipe by installing the scum transfer pipe in the radial direction and installing the scum collector plate in the radial direction. There is a problem that the scum is not completely removed to remove, so even when the treatment state is good due to the scum on the surface, there is a problem that visually unpleasant and clean, and also adversely affects the water quality.

The above patents of our company have solved these defects and saved the scum removal effect and the amount of water consumed for scum removal. However, if the amount of scum generated in the sedimentation basin changes from time to time and seasonally, Every time it was necessary to adjust the operating cycle of the electric drain valve, it was cumbersome.

According to the amount of scum generated in the sedimentation basin, it is to provide a sludge and scum removal device of a circular sedimentation battery which can automatically adjust the opening and closing time of the electric drain valve using the scum supervisory control device.

A drive device (1) installed on the maintenance passage (B) installed radially in the center of the slab of the circular settler (A);

A central column (2) connected to the output shaft of the driving device and installed vertically at the center of the circular settler;

A central rectifying cylinder (3) installed concentrically on an upper portion of the central column (2);

Sludge collection means (4) installed on both sides of the lower portion of the central column (2);

A scum collection arm installed radially long from the outside of the central column or the central rectifying barrel to near the outer wall of the circular sedimentation basin, one end of which is fixed to the central column or the central rectifying barrel and reinforced by a reinforcing bar 12-2. (12);

Rotating freely connected to the scum collection arm in a hinged structure, the inner side is installed in the central rectification barrel, the outer side is extended to the scum reservoir plate (C), the lower part is installed so as to be submerged in water, both ends A scum collecting plate 13 which is sealed by installing a blocking rubber plate 13-1;

From the outside of the central rectifying tank (3) to penetrate the wall of the circular sedimentation basin or the wall of the circular sedimentation in the radial direction of the circular sedimentation basin until the manhole, the rear side is above the water surface and the front movable plate (5-3) A fixed scuff strap 5 installed to be locked under the water;

An electric drain valve (6) provided at the end of said fixed scuff (5) or at a drain pipe provided in the middle of said fixed scuff (6);

A fine screen device (10) installed in the manhole (e) to remove solids in the scum;

A front limit switch (7) installed at the front and a rear limit switch (7A) installed at the rear on the wall surface of the circular needle battery (5);

A switch operating bar 12-1 installed at the end of the scum collection rod 12;

A scum sensor 8 provided on the slab at the position where the fixed scum trap 5 is installed; And

And an open / close controller 9 which receives the signals of the front limit switch 7 and the rear limit switch 7A and the scum sensor 8 and automatically sends an opening / closing signal to the electric drain valve 6 according to the amount of scum. Provided is a sludge and scum eliminator of a circular settler with scum supervisory control means.

Completely removes sludge at the bottom of the sedimentation basin and scum on the water surface to increase sedimentation efficiency, improve the quality of supernatant water, maintain aesthetic cleanliness, prevent odor and pest formation, minimize the amount of water consumed to remove scum, and maintain It is easy to manage.

The present invention to implement the problem solving means,

Install the maintenance passage (B) in the center of the circular settler (A), install the drive unit (1) in the center of the maintenance passage (B), and connect the center column (2) vertically to the output shaft of the drive unit. And install it by connecting the cylindrical central rectification barrel (3) to the upper water surface of the central column. The central rectification cylinder starts from above the surface of the water and is submerged to 1/2 ~ 2/3 of the depth below the surface of the water. Fix firmly to the center column (2) of the sludge collector.

On both sides of the lower part of the central column 2, sludge collection means 4 are installed for collecting sedimented sludge into the sludge hopper at the center of the sedimentation basin in the radial direction.

As an embodiment of the sludge collecting means 4, a rake arm 4-1 having a sludge collecting plate 4-2 inclined at the lower portion is used, or a suction orifice tube 4-3 and a manifold 4- The sludge collection means comprised of 4) can be used.

Another embodiment of the sludge collecting means is to install a support (4-6) protruding vertically below the lower front of the rake arm, and connect the rubber-type sludge collection plate (4-7), but collecting the support and rubber-type sludge The connecting portion of the plate has a hinge structure (4-5) freely rotatable.

The sludge collecting means with sludge collecting plate attached to the rake arm is most widely used, but when the elastic rubber plate attached to the lower part of the sludge collecting plate is worn out, the sludge collecting plate needs to be replaced. In some cases, precise construction is required to make the bottom of the sedimentation basin conical, and maintenance is difficult.

The sludge collecting means composed of the suction orifice tube and the central manifold collects sludge at the bottom of the sedimentation basin by the suction force of the water pump or pump without contacting the bottom of the circular sedimentation basin and the suction orifice tube. Is fresh.

The sludge collecting means equipped with a rubber-type sludge collecting plate on the support protruding from the bottom of the rake arm can freely move the rubber-type sludge collecting plate freely up and down, so that the sludge at the bottom of the sedimentation basin can be completely collected even if the bottom of the circular sediment is not conical. Thus, there is an advantage that sludge collection is effective without decaying sludge occurs.

The scum collection arm 12 is fixedly installed in a horizontal direction in the radial direction of the circular sedimentation basin outside the upper part of the central column 2 or the central rectification barrel 3, and fixedly installed. The scum collection plate 13 extends from the outside of the central rectifier 3 to the scum storage plate (C), but the scum collection arm 12 and the scum collection plate 13 are rotated by the hinge structure 14. Connect freely and integrally form an elastic rubber plate 13-1 on the inside and outside of the scum collection plate 13 so as to be in contact with the central rectifying cylinder 3 and the scum storage plate (C), respectively. At the end of the arm 12, the switch operation bar 12-1 is fixedly installed to operate the limit switches 7 and 7A.

Limit switches can use contact or non-contact proximity switches.

The reinforcing bar 12-2 is connected between the end of the scum collection arm 12 and the central column 2 of the sludge collector to reinforce the deflection.

The upper limit switch 7 at the front of the fixed scum trap 5 at the top of the outer wall of the circular sedimentation basin, and the rear limit switch 7A at the rear of the fixed scum trap 5, respectively. It installs in the corresponding position of (12-1).

Although the front limit switch 7 is preferably installed at the front of the fixed scum trap 1 to 3 m, it may be installed farther or closer than this depending on the site conditions.

In the circular settler (A), a scum sensor 8 capable of monitoring the amount of scum on the water surface is provided on the slab at the position where the fixed scum trap 5 is located.

The signals of the limit switches 7, 7A and the scum sensor 8 are connected to the open / close controller 9.

A fixed scum trap 5 having a U-shaped or semi-circular or quadrangular cross section penetrates the outer wall of the scum reservoir plate (C) and the circular sedimentation basin (A) from the outside of the central rectifying tank (3). Install horizontally long in the radial direction, but the front of the fixed scum trap 5-1 deeply submerged in the water and the back of the fixed scum trap 5-2 slightly above the surface of the water, but 3 to 5 cm It is preferable but may be lower or higher.

A movable plate 5-3 having the same length is installed on the front surface of the fixed scuff strap 5-1, and the height and the horizontal can be adjusted by connecting with a screw jack. A rubber pad 5-6 is inserted between 1) and the movable plate 5-3 and fixed with a set screw 5-7, and an inner central commutator 3 of the fixed scuff 5 is provided. ), Close the elastic rubber block (5-4) is fixed to the fixed scum trap (5), and the outer wall of the central rectifying tube (3) is in contact with each other to secure the seal. To keep it from blocking the scum.

The movable plate 5-3 can be adjusted up and down, set to the most suitable surface depth, and have a slope downward with respect to the surface, increasing the speed of the horizontal flow on the surface, even if a small amount of water flows scum on the surface To be effectively removed.

The suitable depth of sleep is usually adjusted by changing the length depending on the properties of the scum, 0.5 ~ 1.0cm, the inclination angle of the movable plate (5-3) is preferably 10 to 20 °, but operates at other angles Is possible.

In addition, the movable plate 5-3 has a double inclination angle, initially horizontal to 5 °, and then 10 to 20 ° to increase the accumulation amount of scum on the movable plate 5-3 and further increase the scum discharge effect. Can be.

Since the movable plate 5-3 having a double-view angle is initially distributed in a circumferential direction in a 1/4 circle (a horizontal and vertical 90 ° range) with respect to the inlet, the speed in the horizontal direction is the same for the same scum displacement. Although the direction of the streamline is gathered within the inclination angle at the inclined portion, the flow velocity in the horizontal direction is increased, and the horizontal flow velocity is maximized at the first inclined portion (horizontal to 5 ° portion), so the scum is fast due to the horizontal flow. This will be removed well.

Since the movable plate having the double inclination angle has been described in the embodiment of a specific angle, it is also included in the scope of the present invention to make a different angle.

The movable plate 5-3 is preferably installed at a depth of 5 to 10 mm below the surface of the water, but may be installed at a different depth depending on the nature of the scum in the field. To be adjusted.

The end of the fixed scum trap 5 penetrating the outer wall of the circular sedimentation basin (A) is installed by connecting the electric drain valve (6) or the drain pipe is connected to the lower part of the wall adjacent to the fixed scum trap (5) Install an electric drain valve (6) at the end of the valve, and connect it with the open / close controller (9).

The opening and closing controller 9 compares and determines the scum amount signal of the preset counter 9-1 and the scum sensor with a preset basic scum amount input data to automatically adjust the opening and closing time of the electric drain valve 6. Means (not shown).

In the embodiment of the scum sensor 8, the ultrasonic sensor is inclined to the surface of the water, and when the scum sensor emits ultrasonic waves to the scum on the surface, the ultrasonic waves are irregularly reflected because the surface of the scum is irregular when the ultrasonic waves collide with the scum sensors. Since the intensity of the diffuse reflection ultrasonic wave is proportional to the amount of scum on the surface of the surface, the diffuse reflection ultrasonic wave is detected and the amount of scum is measured.

When using ultrasonic waves, it is possible to reliably monitor the scum state because it is not influenced by external conditions such as brightness or wind, except for scum which has an unusually large number of bubbles.

In another embodiment of the scum sensor, an image camera is used to transmit an image of the scum to the controller, and the image of the scum sensor is affected by weather conditions such as a daytime night or a cloudy day. Presets include several grades of basic image data and means for setting day, night and cloudy days, and preset counter operation modes.

In addition, the preset value and the basic image data of the preset counter in the open / close controller 9 are configured to be displayed, input and remotely controlled in the central control room.

The basic image data to be preset is, for example, when the scum collection plate 13 comes to the position of the front limit switch 7, the image camera is operated as the scum sensor 8, so that the fixed scum trap 5 and The base image is set to A, if there are too many scums on the water between the scum collection plates 13, B if the scums are normal, C if there are few scums, and D if there are no scums. It is also possible to preset the corrected images for day, night, cloudy day, etc. for each class.

Day and night settings are preset based on standard time signals, and cloudy days are set using a photo sensor (photo sensor not shown).

In the manhole (e) is installed a fine screen device 10 for the automatic removal of scum, a scum collection container 11 is installed below the outlet of the micro screen device.

When the drive device 1 is operated, the central column 2 rotates, and the central rectifier 3, the sludge collection means 4, the scum collection arm 12, and the scum collection connected thereto are integrally formed in the central column. The plate 13 rotates together.

The sludge settled at the bottom of the circular sedimentation basin is transferred to the sludge hopper formed in the center of the sedimentation basin by the action of the sludge collecting means 4, and the biological sludge tank (not shown) by the conveying sludge pump (not shown) through the sludge drawing pipe (g). And the remaining sludge is removed as excess sludge.

The scum which floated on the surface of the circular sedimentation basin is collected by pushing the scum collecting plate 13 toward the fixed scum trap 5, and the elasticity between the central commutation cylinder 3 and the scum reservoir plate is high. Since it is sealed with a good blocking rubber plate 13-1, all scums are collected toward the fixed scum trap 5 without any omission.

When the scum collection arm 12 contacts the front limit switch 7 installed in front of the fixed scum trap 5, the signal of this limit switch is transmitted to the open / close controller 9, and at the same time, the scum sensor (8) is operated to take an image of both signals of the scum or scum floating on the water surface between the scum collection plate 13 and the fixed scum trap 5, and transmit them to the open / close controller 9.

The open / close controller 9 receives the signal of the front limit switch 7 transmitted and the scum amount signal or the image signal of the scum sensor 8, and sets the preset electric drain valve opening time or the preset basic image according to the scum amount. The image and transmission input image signal are compared, and the image signal grade at that time is determined to determine the opening time of the electric drain valve 6.

For example, when the scum positive signal is 0 to 100%, the open time of the electric drain valve 6 is set from 0% to 100% (when the limit switch is opened immediately) to 0% (the scum positive signal is 0 days). Automatic control until

When the scum signal is an image signal, if the class A (when there are many scums), a control signal is sent to open the electric drain valve 6 immediately after the contact signal of the front limit switch 7 is input.

In the case of C class (when the scum is small), a control signal is sent to open the electric drain valve at a time delayed from the input time of the contact signal of the front limit switch 7 for a predetermined period.

In the case of class D (without scum), the open signal is not sent to the electric drain valve 6 even if the input signal of the front limit switch 7 is input.

In addition, day and night image correction is classified by the built-in standard time information, and cloudy days image correction is preset based on the sensitivity of the built-in photosensitive sensor.

If the scum sensor 8 fails or the image is difficult due to a disturbance such as a typhoon, it is switched to the preset counter operation mode and contacts the front limit switch 7 according to the amount of scum on the surface of the settling basin. When the signal inputs the desired number to the preset counter every few times, the electric drain valve 6 is opened, and after the input number passes, the electric drain valve opens.

When the electric drain valve 6 is opened, the water in the fixed scum trap 5 is drained, and the water in the circular settler flows into the fixed scum trap 5 through the fixing plate 5-3, thereby providing a rapid flow in the horizontal direction. Since the scum on the surface of the water moves together, the solids are filtered out of the micro-screen device 10 installed in the manhole through the fixed scum trap 5 and the electric drain valve 6, and the scum container 11 The water stored and passed through is returned to the treatment system.

When the scum collection arm 12 rotates further, it contacts the rear limit switch 7A, and when the contact signal of the rear limit switch is transmitted to the opening / closing controller 9, the opening / closing controller 9 is the electric drain valve 6 The motor is closed to close the electric drain valve, and the cycle of scum discharge is terminated, and this process is repeated, completely and effectively removing the sludge deposited in the circular settler and the scum on the water, and the amount of scum needed to remove scum. Will also be minimized.

The present invention has been mainly described with respect to the sludge and scum removal device having a specific structure with reference to the drawings, which can be modified and modified innumerable by those skilled in the art all these changes and modifications are included in the protection scope of the present invention Should be.

1 is a plan view of the present invention.

2 is a cross-sectional view of the present invention.

3 is an exemplary view of a movable plate of the present invention.

4 is an exemplary view of a double tilt movable plate of the present invention.

Figure 5 is an exemplary view of the sludge collecting means provided with a sludge collecting plate on the lake arm of the present invention.

Figure 6 is an illustration of the sludge collection means consisting of a suction orifice tube and a central manifold of the present invention.

Figure 7 is an exemplary view of the sludge collecting means provided with a rubber-type sludge collection plate on the lake arm of the present invention.

8 is an illustration of scum supervisory control means.

9 is an explanatory diagram for automatically adjusting the electric drain valve opening and closing time according to the scum image signal.

Claims (7)

A drive device (1) installed on the maintenance passage (B) installed radially in the center of the slab of the circular settler (A); A central column (2) connected to the output shaft of the driving device and installed vertically at the center of the circular settler; A central rectifying cylinder (3) installed concentrically on an upper portion of the central column (2); Sludge collection means (4) installed on both sides of the lower portion of the central column (2); A scum collection arm installed radially long from the outside of the central column or the central rectifying barrel to the outer wall of the circular sedimentation basin, and fixed at one end thereof to the central column or the central rectifying barrel, and reinforced with a reinforcing bar 12-2. (12); Rotating freely connected to the scum collection arm in a hinged structure, the inner side is installed in the central rectification barrel, the outer side is extended to the scum reservoir plate (C), the lower part is installed so as to be submerged in water, both ends A scum collecting plate 13 which is sealed by installing a blocking rubber plate 13-1; From the outside of the central rectifying tank (3) to penetrate the wall of the circular sedimentation basin or the wall of the circular sedimentation in the radial direction of the circular sedimentation basin until the manhole, the rear side is above the water surface and the front movable plate (5-3) A fixed scuff strap 5 installed to be locked under the water; An electric drain valve (6) provided at the end of said fixed scuff (5) or at a drain pipe provided in the middle of said fixed scuff (6); A fine screen device (10) installed in the manhole (e) to remove solids in the scum; A front limit switch (7) installed at the front and a rear limit switch (7A) installed at the rear on the wall surface of the circular needle battery (5); A switch operating bar 12-1 installed at the end of the scum collection rod 12; A scum sensor (8) installed on the slab at a position where the fixed scum trap (5) is installed to sense an amount of scum on the water surface between the scum collection plate (13) and the fixed scum trap (5); And Receives a signal from the front limit switch 7, the rear limit switch 7A and the scum sensor 8, receives a signal from the front limit switch 7 and then the amount of scum detected by the scum sensor 8 Therefore, an opening control signal is transmitted to the electric drain valve 6 after a predetermined delay time has elapsed, and a closing control signal is transmitted to the electric drain valve 6 when a signal is received from the rear limit switch 7A. Sludge and scum eliminator of the circular settler with scum supervisory control means comprising a controller (9). The fixed plate 5-3 can adjust its position up and down, and has a double inclination angle consisting of a small inclination portion of horizontal to 5 degrees and a downward inclination portion of a large angle of 10 to 20 degrees. Sludge and scum eliminator for circular settler with scum supervisory control means. The sludge and scum eliminator of the circular sedimentation battery having a scum supervisory control means according to claim 1, wherein the sludge collecting means has a rubber-like scum collecting plate attached to a support protruding from the lower portion of the rake arm in a hinged structure. The sludge and scum eliminator of the circular needle battery of claim 1, wherein the limit switch is provided with a contact type or a non-contact type. delete The sludge and scum eliminator of the circular sedimentation battery having a scum supervisory control means according to claim 1, wherein the scum sensor is composed of an ultrasonic scum sensor or an image camera. delete

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