JP3170744U - Sludge volume reduction device for sludge storage tank - Google Patents

Abstract

A sludge volume reducing device for a sludge storage tank that can be easily installed even in an existing sewage treatment facility. SOLUTION: A flange 10 surrounding an opening portion 210 of a sludge storage tank 200, a membrane separation unit 30 suspended from a suspension member 20 and immersed in a sludge storage tank 200, and connected to the membrane separation unit 30 and a blower. , A bubbling conduit 34 for bubbling from below the membrane separation unit 30, a drainage conduit 36 connected to the membrane separation unit 30 and a drainage pump for draining filtered water by the membrane separation unit 30, and a drainage amount of the drainage pump Control unit having control means for controlling the operation of the blower and the drainage pump while monitoring the operation status information of the blower and the drainage pump on the display unit 58. 50. [Selection] Figure 1

Description

  The present invention relates to a sludge volume reducing device for a sludge storage tank for reducing sludge capacity by removing moisture from sludge in a sludge storage tank in which sludge generated during sewage treatment is decomposed, concentrated and stored.

  In so-called simple sewerage wastewater treatment facilities represented by agricultural village wastewater treatment facilities and fishery village wastewater treatment facilities, the wastewater is purified by subjecting the collected wastewater to decomposition treatment such as the activated sludge method. After such a decomposition treatment, the treated water purified by the decomposition treatment and sludge are mixed. The purified treated water is separated from sludge and then discharged into a river, but the sludge is disposed of as general waste or industrial waste.

  The amount of moisture contained in such sludge is extremely large, and it is optimal to remove moisture from the sludge in order to reduce the amount of sludge treated. As an apparatus and method for removing moisture from such sludge, for example, apparatuses and methods disclosed in Patent Document 1 and Patent Document 2 have been proposed.

Japanese Patent Laid-Open No. 7-204699 JP 2006-35166 A

  Patent Documents 1 and 2 relate to a method for concentrating sludge in which sludge is concentrated (dehydrated) using a concentrator and dewatering is performed after adding a flocculant when concentrating and dewatering slurry sludge. Improved techniques are disclosed.

In the dehydration treatment methods disclosed in Patent Documents 1 and 2, since the flocculant is added to the sludge, the chemical remains in the sludge after the dehydration treatment, and therefore, the neutralization treatment for the chemical remaining in the sludge is performed. It becomes necessary, and the cost required for the sludge concentration treatment tends to be high.
In addition, such treatment equipment is mostly used as part of the main body treatment equipment when a new sewage treatment (sludge treatment) facility is installed, and its application to existing sewage treatment facilities is structurally and costly. There is also a problem that it is difficult.

  Therefore, the present invention is a sludge volume reduction process that suppresses initial costs and running costs without adding chemicals when sludge volume reduction treatment is performed in small-scale sewage treatment facilities such as wastewater transfer treatment facilities for simple sewers. The purpose of the present invention is to provide a sludge volume reducing device for a sludge storage tank that can be easily installed even in an existing sewage treatment facility.

As a result of intensive studies to solve the above problems, the present inventors have conceived the following configuration.
That is, the eaves portion standing in an arrangement surrounding the opening portion provided on the upper surface of the sludge storage tank of the wastewater treatment facility, and the height position is suspended so that the height position can be adjusted to the suspension member connected to the eaves portion, A membrane separation unit immersed in the sludge storage tank from the opening portion, one end is attached to the lower part of the membrane separation unit and the other end is connected to a blower, and air is ejected from below the membrane separation unit. A bubbling conduit for bubbling, and a drain for draining the filtered water filtered by the membrane separation unit to the outside of the sludge storage tank, with one end attached to the upper part of the membrane separation unit and the other end connected to a drainage pump. An operation switch for operating the blower and the operation of the drainage pump, and an operation status of the blower and the drainage pump. A Sludge Reduction device of the sludge storage tank, characterized by comprising a control unit, a having a control means for controlling the operation of the drainage pump and the blower while monitoring the display unit operating status information relates.

  Further, the sludge storage tank is provided with a water level measuring means, and the control means calculates the water level in the sludge storage tank based on the measurement data measured by the water level measuring means, and displays the display unit. Is preferably displayed. Thereby, the state of the water level in a sludge storage tank can be grasped | ascertained, and the idle driving | operation of a drainage pump can be prevented.

  Moreover, it is preferable that the connection part with the one end part of the said drainage pipe line is formed in the said membrane separation unit with stainless steel. As a result, it is possible to prevent problems such as the connection part falling off due to corrosion or the like.

The control unit further includes network connection means connectable to a network, and data output means, and the driving status information displayed on the display unit is output as data by the data output means, and the driving status is displayed. It is preferable that the output data of information is provided so as to be transmitted to the management terminal connected to the network by the network connection means.
Thereby, the driving | running state of the sludge volume reduction process of a sludge storage tank can be grasped | ascertained in a remote place.

  Furthermore, each of the control unit and the terminal further includes data input means for enabling data input via the network, and a command input to the terminal by the user using the input means is Input to the control unit via the network and the data input means, and the control unit performs the operation of the blower and the drainage pump based on the command input to the control means from the management terminal, respectively. It is preferable to be provided so as to be controllable. Thereby, while being able to grasp | ascertain the driving | running state of the sludge volume reduction process of a sludge storage tank at a remote place, the driving | operation of a sludge volume reduction processing apparatus can be remotely operated.

  According to the configuration of the sludge volume reduction tank of the sludge storage tank according to the present invention, sludge volume reduction can be performed without adding chemicals to the sludge in the sludge storage tank, and sludge can be reduced at a low cost. Can be processed. Moreover, since the configuration is simple, it can be installed not only in a newly installed sludge treatment facility but also in an existing sludge treatment facility.

It is a front view which shows schematic structure of the sludge volume reducing apparatus of the sludge storage tank concerning this embodiment. It is a front view of a control unit. It is explanatory drawing which shows an example of the screen display state in the display part of a control unit. It is explanatory drawing which shows the modification of a control unit.

Hereinafter, an embodiment of a sludge volume reducing apparatus for a sludge storage tank according to the present invention will be described with reference to the drawings. In the present specification, the term sludge storage tank is used as a term encompassing all of an aeration tank, a sedimentation tank, a sludge concentration tank, a sludge storage tank, and a sludge concentration storage tank.
As shown in FIG. 1, the sludge volume reducing apparatus 100 for a sludge storage tank according to the present embodiment is a ridge that is erected in an arrangement surrounding an opening portion 210 provided on the upper surface of a sludge storage tank 200 of a wastewater treatment facility. 10, a chain 20 that is a suspension member having one end connected to the flange 10, and a membrane separation unit 30 that is connected to the other end of the chain 20 and is immersed in the stored water inside the sludge storage tank 200. And a water level measuring means 40 for measuring the water level of the sludge storage tank 200, and a control unit 50 to which the membrane separation unit 30 and the water level measuring means 40 are connected.

  The eaves part 10 is a membrane separation unit formed by a horizontal member 11 that assembles a single pipe appropriately on the upper surface of the sludge storage tank 200 and is erected in the vicinity of the opening part 210 and crosses the opening part 210 at a position above the opening part 210. A single pipe is assembled by surrounding the standing portion 12 constructed so that 30 suspensions are possible and the opening portion 210 of the sludge storage tank 200 from the outside of the standing portion 12 to prevent the standing portion 12 from collapsing. Holding part 14 for the purpose. Here, the single pipe is used for the construction of the collar part 10, but the collar part 10 may be constructed of other known materials besides the single pipe.

  The membrane separation unit 30 suspended in the sludge storage tank 200 from the opening portion 210 by the horizontal member 11 of the upright portion 12 of the collar portion 10 has a plurality of solid-liquid separation membranes (not shown) in the housing 32. Contained. By passing the sludge mixed water through the membrane separation unit 30 immersed in the sludge mixed water stored in the sludge storage tank 200, the sludge mixed water is solid-liquid separated into sludge and filtered water by the solid-liquid separation membrane. The The solid-liquid separation membrane accommodated in the membrane separation unit 30 can be exchanged individually.

  A bubbling conduit 34 is attached to the lower part of the casing 32 of the membrane separation unit 30. As shown in FIGS. 1 and 2, the bubbling conduit 34 has one end connected to the blower 52 accommodated in the main body 51 of the control unit 50 and the other end connected to the lower portion of the housing 32. The air from the blower 52 is ejected from the lower side of the casing 32 so that the bubbles can be supplied into the casing 32. In this way, by supplying air bubbles from the lower position of the membrane separation unit 30 to the inside of the membrane separation unit 30, the sludge adhering to the solid-liquid separation membrane can be appropriately peeled off, and clogging of the solid-liquid separation membrane is prevented. This is advantageous because the maintenance frequency of the membrane separation unit 30 can be greatly reduced.

A drainage pipe 36 is attached to the upper part of the casing 32 of the membrane separation unit 30.
Since the connecting portion between the casing 32 and the drainage pipe 36 is formed in a stainless steel connecting body 38, the connecting portion can be prevented from being damaged due to corrosion or the like. It is even more preferable that the connection body 38 adopts a so-called flexible tube. The drainage pipe 36 passes through the drainage pump 54 accommodated in the main body 51 of the control unit 50 provided on the upper surface of the sludge storage tank 200 from the opening portion 210 and then flows from the sludge storage tank 200 to a flow rate adjustment tank (not shown). Etc. are connected. The drainage pump 54 is provided with a drainage amount measuring means 55 for measuring the drainage amount. The flow rate measuring means is electrically connected to the control means 56 of the control unit 50.

  A control unit 56 is accommodated in the control unit 50. The control means 56 receives the measurement data from the wastewater amount measuring means 55 provided in the drainage pump 54 and calculates the drainage flow rate of the filtered water discharged from the sludge storage tank 200. The drainage flow rate of the filtered water calculated in this way can be displayed on the display 58 by the control means 56. Display 58. It is disposed in front of the main body 51 of the control unit 50. If a water level meter is provided in the flow rate adjustment tank, the display 58 can display the water level of the filtered water stored in the flow rate adjustment tank.

  The water level measurement means 40 in this embodiment measures a water level by measuring a water pressure with a pressure sensor. The water level measuring means 40 is installed on the inner bottom surface of the sludge storage tank 200 by a suspension member 42 separate from the chain 20 that suspends the membrane separation unit 30, and from the opening 210 of the sludge storage tank 200 as necessary. It can be pulled up. The water level measuring means 40 is electrically connected to the control means 56 accommodated in the control unit 50, and the measurement data measured by the water level measuring means 40 is transmitted to the control means 56 and then stored in the sludge by the control means 56. The water level in the tank 200 is calculated. The water level of the sludge storage tank 200 calculated in this way can be displayed on the display 58 by the control means 56. The arrangement of the water level measuring means 40 can be omitted.

As shown in FIG. 3, the display 58, which is a display unit of the control unit 50, includes an air supply amount by the blower 52, a drainage pump 54, in addition to the measured value of the water level measuring means 40 and the operating state of the blower 52 and drainage pump 54. The operation status information such as the drainage flow rate of filtered water can be set to be displayable.
Further, the display 58 according to the present embodiment employs a so-called touch panel structure. As the touch position detection method of the touch panel, a known method can be appropriately adopted. According to the display 58 having such a touch panel structure, operation switches for operating the blower 52 and the drainage pump 54 can be displayed in an operable manner. Thereby, the arrangement of mechanical elements such as a switch button in the control unit 50 can be omitted, which is advantageous in that the appearance shape and operational convenience of the control unit 50 are improved.

As shown in FIG. 4, the control unit 50 may be provided with network connection means 60 and data input / output means 62 that can be connected to a network N such as the Internet. If these structures are adopted, data relating to the operation status information of the blower 52 and the drainage pump 54 can be output by the data input / output means 62, and the output data can be transmitted to the network N by the network connection means 60. Can do.
Further, if the terminal 70 is connected to the network N and the data input means 72 and the display means 74 are provided in the terminal 70, the control center or the like provided at a position away from the place where the sludge storage tank 200 is provided. This is advantageous in that the operating status of the sludge volume reducing device 100 in the sludge storage tank 200 can be grasped via the network N. According to such a configuration, it becomes possible to collectively monitor the operation status of the sludge volume reducing apparatus 100 in the plurality of sludge storage tanks 200, and the operation cost can be further reduced.

  Furthermore, it is still more convenient if the input means 72 is provided in the terminal 70 connected to the network so that a command can be input by a remote user (control center operator). By adopting such a configuration, a remote user who has confirmed the operation status of the sludge volume reducing apparatus 100 displayed on the display means 74 of the terminal 70 can use the blower 52 and the drainage pump 54 from the input means 72 of the terminal 70. A driving operation control command for controlling at least one of the driving operations can be input. The operation control command input to the terminal 70 is transmitted to the control unit 50 of the sludge volume reducing device 100 via the network N, and can be input to the control unit 56 by the data input / output unit 62. The control means 56 controls the operation of the blower 52 and the drainage pump 54 based on the input operation operation control command. According to such a configuration, it becomes possible to monitor (monitor) and control the operation status of the sludge volume reducing apparatus 100 in the plurality of sludge storage tanks 200 in a lump, and the operation cost can be further reduced.

Next, the usage method of the sludge volume reducing apparatus 100 of the sludge storage tank concerning this embodiment is demonstrated.
First, the eaves part 10 is constructed so as to surround the periphery of the opening 210 on the upper surface of the sludge storage tank 200. One end of the chain 20 is locked to the horizontal member 11 of the flange 10, and the membrane separation unit 30 is connected to the other end of the chain 20. For connection between the chain 20 and the membrane separation unit 30, a form in which the chain 20 is connected to a bracket (not shown) mounted on the membrane separation unit 30, a form in which the chain 20 is directly connected to the housing 32 of the membrane separation unit 30, or the like is adopted. be able to. When the membrane separation unit 30 and the chain 20 are connected, the operator pulls down the membrane separation unit 30 from the opening 210 to a height where the membrane separation unit 30 is immersed in the sludge mixed water in the sludge storage tank 200 while holding the chain 20. . After the membrane separation unit 30 is installed at an appropriate height position, the chain 20 is fixed.

After the membrane separation unit 30 is immersed in the sludge mixed water, the water level measuring means 40 is installed on the inner bottom surface of the sludge storage tank 200 from the opening portion 210 as necessary. The operator applies a main power source (not shown) of the control unit 50 to start the control unit 50 and operates the operation menu displayed on the touch panel display 58 to start the operation of the blower 52 and the drainage pump 54. .
When the operation of the blower 52 and the drainage pump 54 is started, the control unit 56 measures the air supply amount per unit time of the blower 52, the drainage water amount per unit time by the drainage pump 54 and the cumulative drainage amount, and the water level measurement unit 40. The water level of the sludge storage tank 200 is calculated on the basis of the measurement data from and the information is displayed on the display 58.

  When the control unit 50 is connected to the network N, all information displayed on the display 58 is transmitted to the control center via the network N. Further, when a driving operation control command is input from the terminal 70 of the control center, the driving operation control command is input to the control unit 50 via the network N, and the control means 56 is based on the input driving operation control command. Thus, output adjustment of the blower 52 and the drainage pump 54 can be performed, and so-called remote control can be performed.

  When performing maintenance of the membrane separation unit 30, the operator can pull up the chain 20 from the sludge storage tank 200 and take out the membrane separation unit 30 from the sludge mixed water. Moreover, the solid-liquid separation membrane accommodated in the housing | casing 32 of the membrane separation unit 30 can be replaced | exchanged as needed. After the maintenance of the membrane separation unit 30 is completed, the membrane separation unit 30 may be immersed in the sludge mixed water in the sludge storage tank 200 by the same method as at the time of installation. In this way, only water can be continuously discharged from the sludge mixed water in the sludge storage tank 200.

When the accumulated amount of discharged water by the drainage pump 54 reaches a predetermined amount, or when the water level of the sludge storage tank 200 reaches a predetermined water level, the sludge mixed water is pumped up by the sludge treatment company.
According to the sludge volume reducing apparatus 100 according to the present invention, the volume of sludge mixed water immediately after being stored in the sludge storage tank 200 can be reduced to almost half the volume, so that the cost for sludge treatment is reduced. Can be halved. In addition, the sludge treatment contractor is also advantageous in that the time and effort of removing the moisture from the sludge mixed water after being pumped is reduced.

  Although the sludge volume reducing apparatus 100 of the sludge storage tank 200 according to the present embodiment has been described above, the technical scope of the sludge volume reducing apparatus 100 according to the present invention is limited to the configuration shown in the present embodiment. It is not a thing. For example, in this embodiment, the structure of the eaves part 10 which has the standing part 12 which has the horizontal material 11 for suspending the membrane separation unit 30 in the sludge storage tank 200, and the holding | maintenance part 14 holding the standing part 12 is demonstrated. However, if the upright portion 12 can be constructed in a stable form, the configuration of the simple collar portion 10 in which the holding portion 14 is omitted can be provided.

Moreover, although the embodiment using the chain 20 as the suspension member when suspending the membrane separation unit 30 has been described, if the membrane separation unit 30 can be suspended from the flange portion 10, other suspension materials such as a wire Can also be used. Furthermore, if a suspension material unwinding / unwinding device is provided, the membrane separation unit 30 is installed in the sludge storage tank 200, the installation height position of the membrane separation unit 30 is adjusted, and the membrane separation unit 30 is maintained. The worker's labor can be reduced at the time of withdrawal from the sludge storage tank 200 at the time.
Furthermore, if the suspension material unwinding / unwinding device is electrically connected to the control means 56 of the control unit 50, the control means 56 winds it according to the water level state of the sludge storage tank 200 measured by the water level measurement means 40. The operation of the unwinding / winding device can be controlled. Thereby, automatic operation of the sludge volume reducing apparatus 100 can be performed.

Furthermore, in the above embodiment, the data input / output means 62 is provided in the control unit 50. However, when the operation status of the sludge volume reducing device 100 is only monitored remotely, the data input / output means is provided. Instead of the means 62, a data output means may be provided. And when using the sludge volume reducing apparatus 100 independently, the structure of the network connection means 60 and the data input / output means 62 can also be abbreviate | omitted.
In the embodiment described above, the control unit 50 is described with the blower 52 and the drainage pump 54 accommodated. However, the blower 52 and the drainage pump 54 may be disposed outside the control unit 50.

DESCRIPTION OF SYMBOLS 10 Ridge part 20 Chain 30 Membrane separation unit 32 Case 34 Bubbling pipeline 36 Drainage pipeline 38 Connection body 40 Water level measuring means 50 Control unit 52 Blower 54 Drain pump 55 Drainage measuring means 56 Control means 58 Display 70 Terminal 100 Sludge Volume reduction device 200 Sludge storage tank 210 Opening part

Claims (5)

A heel that is erected in an arrangement surrounding the opening provided on the upper surface of the sludge storage tank of the wastewater treatment facility,
A membrane separation unit that is hung so that its height position can be adjusted to a suspension member connected to the flange, and is immersed in the sludge storage tank from the opening portion,
One end is attached to the lower part of the membrane separation unit and the other end is connected to a blower, and a bubbling conduit for bubbling by blowing air from below the membrane separation unit;
One end is attached to the upper part of the membrane separation unit and the other end is connected to a drainage pump, and a drainage conduit for draining filtered water filtered by the membrane separation unit outside the sludge storage tank,
A wastewater amount detecting means for detecting a drainage amount of the drainage pump;
The operation switch for operating the blower and the drainage pump is operated, and the operation of the blower and the drainage pump is controlled while monitoring the operation status information on the operation status of the blower and the drainage pump on the display unit. A control unit having control means;
The sludge volume reducing apparatus of the sludge storage tank characterized by comprising. The sludge storage tank is provided with water level measuring means,
The sludge in a sludge storage tank according to claim 1, wherein the control means calculates the water level in the sludge storage tank based on the measurement data measured by the water level measurement means and displays it on the display unit. Volume reduction device.   The sludge volume reducing device for a sludge storage tank according to claim 2, wherein the membrane separation unit is formed of stainless steel at a connecting portion with one end of the drainage pipe. The control unit further includes network connection means connectable to a network, and data output means,
Driving status information displayed on the display unit is output as data by the data output means,
The output data of the operation status information is provided so as to be transmitted to the management terminal connected to the network by the network connection means. Sludge volume reduction equipment for sludge storage tanks. The control unit and the terminal each further have data input means for enabling data input via the network,
A command input to the terminal by a user using the input means is input to the control unit via the network and the data input means,
The said control unit is provided so that control of the operation | movement operation | movement of the said blower and the said drainage pump is respectively provided based on the command input into the said control means from the said management terminal. Sludge volume reduction device for sludge storage tank.