JP4337022B2 - Anaerobic tank treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anaerobic tank treatment apparatus, and more particularly, to an anaerobic tank treatment apparatus having an inflow pipe for water to be treated at a substantially central portion of a filter medium block group.
[0002]
[Prior art]
An anaerobic tank treatment apparatus using a fixed biofilm method is a unit of filter medium in which a plurality of columns supporting a large number of filter media (hereinafter referred to as “dish filter media”) are vertically arranged. A plurality of blocks are arranged in the anaerobic tank to form a filter medium block group, and an inflow pipe of water to be treated is vertically disposed at a substantially central portion of the filter medium block group. This filter medium supports anaerobic bacteria. And the to-be-processed water which flowed in the anaerobic tank from the inflow pipe flows in the anaerobic tank in an upward flow, and is biologically treated by the anaerobic bacteria supported by the filter medium.
[0003]
When constructing this filter medium block group or when replacing a new filter medium block, the inflow pipe can be divided so that the inflow pipe located at the approximate center of the filter medium block group does not interfere with the loading and unloading of the filter medium block. It is necessary to have a simple structure.
[0004]
As shown in FIG. 5, the conventional inflow pipe has a pair of joint jigs 3 with a pair of rubber packings 2, 2 between end portions of the short pipes 1 having a length substantially corresponding to the height of the filter medium block. 3, and the joint jig 3 is fixed with bolts (not shown) so that the joint jig 3 can be divided. Further, as shown in FIG. 6, the short pipes 1 having the male threads 4 formed at the end portions thereof are screwed together with a ring-shaped joint jig 6 in which the female threads 5 are engraved, so that the structure can be divided. It was.
[0005]
[Problems to be solved by the invention]
However, the conventional inflow pipe having a splittable structure has a drawback that many joint jigs 3 and 6 are required to connect the short pipes 1 to each other. In addition, the work of joining the short pipes 1 to each other to assemble the inflow pipe or to divide the inflow pipe is troublesome and takes time, and there is a disadvantage that a special joint jig 3 or 6 is required. .
[0006]
The present invention has been made in view of such circumstances, and since the inflow pipe can be easily divided and assembled, it is easy to work and takes less time, and requires a special joint jig. An object of the present invention is to provide an anaerobic tank treatment apparatus that does not.
[0007]
[Means for solving the problems]
In order to achieve the above-mentioned object, the present invention forms a filter medium block group by arranging a plurality of one unit of a filter medium block formed by vertically arranging a plurality of columns supporting a plurality of filter media in an anaerobic tank. In the anaerobic tank treatment apparatus in which an inflow pipe of water to be treated is vertically arranged at a substantially central portion of the filter medium block group, the inflow pipe is divided into two pipes that can be divided into two vertically at the lower position of the filter medium block group. And a guide tube formed at an end of one of the two tubes and into which the other tube is inserted, and a tube positioned on the upper side when the other tube is inserted into the guide tube. And a seal member that is compressed and sandwiched between the two tubes with a weight of.
[0008]
According to the present invention, the inflow pipe is assembled simply by inserting the other pipe through the seal member into the guide pipe provided in one of the two pipes that can be divided. In this case, since the sealing member is sandwiched between the two pipes by the weight of the pipe located on the upper side of the two pipes and the joint portion of the two pipes is sealed, the water to be treated flowing through the inflow pipe Does not leak from the joint. Further, when the inflow pipe is divided, it is only necessary to pull out the other pipe from the guide pipe.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of an anaerobic tank treatment apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
[0010]
As shown in FIG. 1, an inflow pipe 12 is vertically supported at the center position of the anaerobic tank 10. The upper end portion of the inflow pipe 12 communicates with an inflow water channel (not shown), and treated water (not shown) is supplied from the inflow water channel. A lower end portion of the inflow pipe 12 is opened by a hopper portion 10A at the lower portion of the anaerobic tank 10, and a dispersion plate 14 is provided below the opening. Therefore, the water to be treated spouted downward from the lower end of the inflow pipe 12 is redirected by the dispersion plate 14 to form an upward flow. The to-be-treated water rising by the upward flow passes through the plurality of filter medium blocks 16, 16,... Constituting the filter medium block group 13, and flows out to the flange 18 provided at the upper part of the anaerobic tank 10. The collar 18 is formed on the inner wall of the anaerobic tank 10 and communicates with an aerobic tank (not shown) via a liquid feeding pipe (not shown). Thereby, a part of to-be-processed water in the anaerobic tank 10 is returned to an aerobic tank. In addition, the code | symbol 20 of FIG. 1 is a wear plate, and the triangular-shaped protrusion part is formed continuously. The water to be treated flows from the gap between the protrusions of the wear plate 20 to the flange 18. Moreover, the sludge settled on the hopper portion 10A is drawn out from a drawing pipe (not shown) communicating with the lower end of the hopper portion 10A.
[0011]
The filter medium block 16 is formed in a substantially cubic shape, and is stacked in a plurality of stages on the filter medium receiving base 22.
[0012]
FIG. 2 is a perspective view showing the structure of the filter medium block 16.
[0013]
As shown in the figure, the filter medium block 16 includes an outer frame frame 24, lower frames 26, 26,..., And upper frames 28, 28,. The outer frame frame 24 is formed in a substantially cubic shape, and a plurality of lower frames 26, 26,. The upper frames 28, 28,... Are disposed above the lower frame 26 and parallel to the lower frame 26.
[0014]
.. Are provided between the lower frame 26 and the upper frame 28. Each support column 30 is formed in a cylindrical shape by plastic and is arranged vertically. A plurality of dish-shaped filter media 32, 32,... Are horizontally attached to each column 30.
[0015]
The dish-shaped filter medium 32 is formed in a dish shape from plastic or the like, and anaerobic microorganisms in the water to be treated are supported by the dish-shaped filter medium 32.
[0016]
Further, as shown in FIG. 2, the dish-shaped filter medium 32 is arranged so as to be shifted in the height direction from the dish-top filter medium 32 supported by the adjacent support columns 30, and when viewed from the upper surface (or the lower surface). Arranged so that there is no gap. As a result, the water to be treated is prevented from rising linearly, and the water to be treated effectively contacts the dish-shaped filter medium 32 and is biologically treated.
[0017]
A rectifying plate 34 for partitioning the inside of the anaerobic tank 10 into four sections is attached to the side surface of the outer frame frame 24. Thereby, the to-be-processed water is prevented from flowing unevenly inside the anaerobic tank 10.
[0018]
Next, the inflow pipe 12 will be described.
[0019]
As shown in FIG. 3, the inflow pipe 12 is configured to be divided into two pipes of an upper pipe 36 and a lower pipe 38 at a lower position of the filter medium block group 13. A first support member 40 that supports the upper tube 36 on the outer frame 24 of the filter medium block 16 stacked on the top is provided on the upper portion of the upper tube 36. Then, the first support member 40 and the outer frame frame 24 are fastened by a plurality of first bolts 41, 41. On the other hand, a second support member 42 that supports the lower pipe 38 to the filter medium cradle 22 is provided at the lower end of the lower pipe 38. Then, the second support member 42 and the filter medium receiving base 22 are fastened by a plurality of second bolts 43, 43. Further, when the upper pipe 36 and the lower pipe 38 are fastened by the bolts 41 and 43, by adjusting the screwing amount of the first bolt 41 with respect to the outer frame 24 and the screwing amount of the second bolt 43 with respect to the filter medium base 22. The positions of the upper tube 36 and the lower tube 38 can be adjusted in the vertical direction.
[0020]
As shown in FIG. 4, a cylindrical guide tube 44 into which the upper tube 36 is inserted is provided at the upper end of the lower tube 38, and is welded 39 to the lower tube 38. The distal end of the guide tube 44 is expanded in a trumpet shape so that the upper tube 36 can be easily inserted. Further, a gland packing 45 is provided in the guide tube 44 and at the end of the lower tube 38. In order to join the upper pipe 36 and the lower pipe 38 to form the inflow pipe 12, the upper pipe 36 is inserted into the guide pipe 44 of the lower pipe 38. In this case, the screwing amount of the first bolt 41 and the second bolt 43 is adjusted so that the weight of the upper tube 36 is supported by the lower tube 38. As a result, the gland packing 45 is compressed and sandwiched between the upper tube 36 and the lower tube 38 by the weight of the upper tube 36, so that the joint between the upper tube 36 and the lower tube 38 is reliably sealed. Further, in order to divide the inflow pipe, it is only necessary to pull out the upper pipe 36 from the guide pipe 44. In this case, the screwing amounts of the first bolt 41 and the second bolt 43 may be adjusted so that the upper tube 36 can be moved upward or the lower tube 38 can be moved downward.
[0021]
In FIG. 5, an O-ring 46 is provided instead of the gland packing 45. In this case, if a taper 36A is formed at the lower end of the upper tube 36 as shown in FIG. can do.
[0022]
4 and 5, if a long hole 48 is formed in the peripheral surface of the guide tube 44, the solid matter such as sludge that has flowed into the trumpet tube portion even if the guide tube 44 has a trumpet shape. Can be discharged from the slot 48.
[0023]
As described above, in the anaerobic tank processing apparatus of the present invention, the guide pipe is provided in the lower pipe 38 among the upper pipe 36 and the lower pipe 38 that can be divided, and the upper part is interposed via the sealing member such as the gland packing 45 and the O-ring 46. The inflow pipe 12 was formed simply by inserting the pipe. As a result, when the filter medium block 16 is carried into and out of the anaerobic tank 10, the inflow pipe 12 can be easily divided by pulling out the upper pipe 36 from the guide pipe 44, so that the upper pipe 36 does not interfere with carrying in and out. Just move. Further, when the carry-in / carry-out is completed, the inflow pipe 12 can be assembled simply by inserting the upper pipe 36 into the guide pipe 44. Further, by providing the guide tube 44, a special joint jig is not required, and the joining and dividing operations can be simplified. Therefore, the work efficiency can be improved. Further, by fixing the upper tube 36 to the filter medium block 16, a support that has been conventionally anchored to the housing is not required.
[0024]
In the above description, the guide tube 44 and the seal member such as the gland packing 45 or the O-ring 46 are provided in the lower tube 38. However, the guide tube 44 and the seal member are provided at the lower end portion of the upper tube 36. May be.
[0025]
【The invention's effect】
As described above, according to the anaerobic tank processing apparatus according to the present invention, the inflow pipe can be easily divided and assembled, so that the work can be performed easily and without taking time. It is not necessary.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a structure of an anaerobic tank of an anaerobic tank treatment apparatus according to the present invention. FIG. 2 is a perspective view showing a filter medium block. FIG. 3 is a side view showing an assembly structure of an inflow pipe. FIG. 5 is a cross-sectional view of a case where a gland packing is used as a sealing member for explaining the method of assembling the inflow pipe of FIG. FIG. 6 is a perspective view for explaining a conventional method for assembling an inflow pipe. FIG. 7 is a perspective view for explaining another method for assembling a conventional inflow pipe.
DESCRIPTION OF SYMBOLS 10 ... Anaerobic tank, 12 ... Inflow pipe, 13 ... Filter medium block group, 16 ... Filter medium block, 22 ... Filter medium stand, 24 ... Outer frame frame of filter medium block, 36 ... Upper pipe, 36A ... Taper, 38 ... Lower pipe, DESCRIPTION OF SYMBOLS 40 ... 1st support member, 41 ... 1st volt | bolt, 42 ... 2nd support member, 43 ... 2nd volt | bolt, 44 ... Guide pipe, 45 ... Gland packing, 46 ... O-ring, 48 ... Long hole

Claims (1)

A filter medium block group is formed by arranging a plurality of filter medium blocks each having a plurality of support columns supporting a large number of filter mediums vertically in an anaerobic tank, and the center of the filter medium block group is treated. In the anaerobic tank treatment device in which the water inflow pipe is arranged vertically,
The inflow pipe is
Two pipes that can be divided into two vertically at the lower position of the filter media block group,
A guide tube formed at the end of one of the two tubes and into which the other tube is inserted;
A seal member that is compressed and sandwiched between the two tubes with the weight of the tube located on the upper side when the other tube is inserted into the guide tube;
An anaerobic tank treatment device comprising:

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