JP2003010727A - Apparatus and facilities for treating liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid treating apparatus and liquid treating facilities having enhanced capacity, efficiency and profitability. SOLUTION: This liquid treating apparatus 10 is constituted by arranging a rotary cylinder 12 in a treating tank 11 where the liquid to be treated is introduced or discharged freely. The rotary shaft 12b of the cylinder 12 is supported by a bearing 15. The upper edge part of the shaft 12b is connected to the shaft Ma of rotary driving equipment M through a universal joint 16. An agitating member 17 is arranged in the lower part of the cylinder 12 for agitating solids S such as sand settled on the bottom of the tank 11. A hollow part F is arranged in the cylinder 12 for imparting buoyancy to the cylinder 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid treatment apparatus and a liquid treatment facility for treating wastewater such as sewage, industrial wastewater, rainwater, and other miscellaneous wastewater to obtain a predetermined water quality. The present invention relates to a liquid processing apparatus having a rotating cylinder or a rotating cylinder in a processing tank.

[0002]

2. Description of the Related Art There are various methods and forms of sewage treatment to obtain predetermined water quality by subjecting sewage to be treated to various treatments. FIG. 6 shows a conventional sewage treatment in a general sewage treatment facility 60. 1 schematically shows a flow.

The sewage collected and sent to the sewage pipe line 61 composed of various types of cells M and culverts K is first sent by the pump P to the sand basin 62 of the sewage treatment facility 60, where The sand is removed, and the screen removes relatively large residues of floating sewage. Next, the sewage is sent to the flow rate adjusting tank 63 and temporarily stored therein, and the fixed amount is measured in the next aeration tank 64.
Sent to. In the aeration tank 64, chemical or biological processing is performed, and aeration and stirring are also performed. The sewage treated in this way becomes a sludge mixed solution containing sludge flocs and is then sent to a settling basin 65, where the sludge in the sludge mixed solution is settled and the supernatant water is sent to a disinfection tank 66 for disinfection. It is released and released. On the other hand, a part of the sludge settled in the settling tank 65 is stored in the sludge tank 67 and discharged, but a part is used as return sludge. This return sludge is returned to pipeline 6
After being returned to the aeration tank 64 and the flow rate adjustment tank 63 through 8 and mixed with the wastewater in each tank, the purification treatment of the wastewater is performed by the action of various fungi contained in the returned sludge. It is something that is being promoted.

However, in the above-mentioned conventional wastewater treatment, since the capacity is limited and the cost of installation and maintenance of facilities and equipment is not small, the treatment capacity and efficiency are further increased and various It has been eagerly desired to reduce the cost of the.

[0005]

Therefore, the applicant of the present application has proposed and implemented various liquid processing apparatuses and liquid processing facilities equipped with a rotating cylinder which is further improved in processing capacity and efficiency and is excellent in economic efficiency. It is an object of the present invention to provide an apparatus and a facility capable of further improving these and further improving the processing capacity, efficiency and economical efficiency.

[0006]

In order to solve the above problems, a liquid processing apparatus according to the present invention has a rotating cylinder or a rotating cylinder in a processing tank in which a liquid to be processed can be introduced and discharged freely. The rotary cylinder or the rotary cylinder has a rotary shaft supported by a bearing and connected to a rotary drive device through a universal joint. Further, the rotating cylinder or the rotating cylinder is provided with a stirring member for stirring solid matter such as sand settled at the bottom of the processing tank, and the rotating cylinder or the rotating cylinder is provided with a hollow portion for generating buoyancy. Further, the rotating cylinder or the rotating cylinder has an outdrive structure that is rotated by being given a rotational driving force at the outer peripheral portion. The liquid processing facility according to the present invention is equipped with the liquid processing apparatus as described above.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that parts common to the respective embodiments are denoted by the same reference numerals, and overlapping description will be omitted. Figure 1
Is a schematic cross-sectional view showing a liquid processing apparatus 10 of the present invention,
Processing tank 11 that allows the liquid to be processed to be introduced and discharged freely
A rotary cylinder 12 is provided inside. The processing tank 11 is
It is provided with an inlet 13 for introducing a liquid to be treated and an outlet 14 for discharging treated water obtained by treating the liquid. The rotating cylinder 12 is a cylindrical portion 1 made of metal or the like.
2a and the rotary shaft 12 located at the center of the cylindrical portion 12a
b, and a fixing member 12c for fixing the rotary shaft 12b and the cylindrical portion 12a, and the like, and is configured to rotate in the processing tank 11 by a rotary drive device M such as a motor. As the rotating cylinder 12 rotates, in addition to the vortex flow in plan view, the liquid in the processing tank 11 has an upward flow U inside the rotating cylinder 12 and a downward flow D outside the rotating cylinder 12. It has become. The rotary shaft 12b is supported by the bearing 15, and the upper end portion is connected to the shaft Ma of the rotary drive device M via the universal joint 16.

In the liquid processing apparatus 10 of the present invention having such a structure, it is possible to smoothly rotate the rotating cylinder 12 by absorbing "runout" that may be caused by various factors when the rotating cylinder 12 rotates. it can. That is, since the rotating cylinder 12 has its rotating shaft 12 b supported by the bearing 15, when the “runout” occurs in the rotating cylinder 12, the rotating shaft 12 b is not supported.
The state in which b rotates with the bearing 15 as a center is inclined. Therefore, a bending moment is generated at the connecting portion between the upper end of the rotary shaft 12b and the shaft Ma of the rotary drive device M. The bending moment is absorbed by providing the universal joint 16 there, and the rotary cylinder 12 Is able to rotate smoothly. When a bending moment is generated on the rotary shaft, the shaft itself, the bearing, and various connected devices and members are deformed or damaged. In particular, in a device such as a liquid treatment device, the working environment for maintenance is a relatively bad condition, and therefore it is extremely important to prevent the above adverse effects. There are various possible causes for the "runout" of the rotary cylinder 12, but especially for the differential settlement in which the foundation tilts and sinks after the installation of the device, the rotating shaft 12b is not in the vertical state and is tilted. It becomes one of the extremely serious causes because it will rotate. The bearing 15 supports the rotation of the rotary shaft 12b while supporting the weight of the rotary cylinder 12, for example, a thrust bearing, or supports only the rotation of the rotary shaft 12b, such as a radial bearing. Besides, it is possible to use a bearing that has both the functions of a thrust bearing and a radial bearing.
Further, in the case of supporting only the rotation of the rotating shaft 12b, it is possible to use a sliding bearing having a gap that makes a proper contact with the rotating shaft 12b.

Below the rotary cylinder 12, a stirring member 17 for stirring solid matter S such as sand settled on the bottom of the processing tank 11 is provided. The stirring member 17 is a rod-shaped member provided on the fixing member 12c, and is a solid material S such as sedimented sand.
The solid matter S such as sand can be washed by suspending the organic matter contained in the solid matter S by stirring the solid matter S, which is extremely effective especially when the liquid treatment device 10 is used as a sand basin. is there. That is, the solid matter S such as sand settled on the bottom of the processing tank 11 is appropriately drawn out from the drawing pipe 18 and discarded, but in a state in which the organic matter is removed by stirring and washing in this way. The solid S does not generate a bad odor or decomposes, and the treatment required for disposal can be simplified.

Further above the rotating cylinder 12, the rotating cylinder 1
A circulation hole 19 for circulating the liquid from the inside to the outside of the 2 is provided. This flow hole 19 is a substantially vertically long opening, and as shown in FIG. 2, even when the water level in the processing tank 11 is lowered by some reason and the upper part of the cylindrical portion 12a is exposed above the liquid surface, the rotary cylinder 12 is exposed. The liquid can be circulated from the inside to the outside, and the vertical length dimension of the opening and the height position of the lower end are set to the dimensions and positions corresponding to the predicted fluctuation of the water level. There is. Further, the flow holes 19 are formed in the rotating cylinder 12 when the rotating cylinder 12 rotates.
It also has the effect of increasing the contact resistance between the upper part of the liquid and the liquid in contact therewith, whereby the vicinity of the upper part of the liquid in the processing tank 11 is moved to the outside by the centrifugal force, and the above-mentioned vortex flow and upward flow U and downward flow The countercurrent D becomes strong.

The rotating cylinder 12 is provided with a hollow portion F, and the hollow portion F reduces the weight and specific gravity of the rotating cylinder 12 as a whole. Therefore, since the rotary cylinder 12 generates an appropriate buoyancy in the liquid, it is possible to reduce the driving force of the rotary drive device M such as a motor that rotates the rotary cylinder 12 and to reduce the load applied to the bearing 15 and the universal joint 16. It can be reduced.

FIG. 3 is a schematic sectional view showing the liquid processing apparatus 20 of the present invention, and the liquid processing apparatus 1 shown in FIGS. 1 and 2.
The rotating cylinder 12 of 0 is a rotating cylinder 22.
The rotating column 22 has a column portion 22a made of metal or the like,
It is composed of a rotary shaft 22b located at the center of the columnar portion 22a, and is rotated in the processing tank 11 by a rotary drive device M such as a motor. As the rotary cylinder 22 rotates, the liquid in the treatment tank 11 has an upward flow U near the rotary cylinder 22 and a downward flow D near the side wall of the treatment tank 11 in addition to the vortex flow in plan view. It is something like this.

A hollow portion F is provided inside the rotary cylinder 22, and the hollow cylinder F reduces the weight and specific gravity of the rotary cylinder 22 as a whole. Therefore, since the rotary columnar 22 generates an appropriate buoyancy in the liquid, it is possible to reduce the driving force of the rotary drive device M such as a motor that rotates the rotary columnar 22 and to reduce the load applied to the bearing 15 and the universal joint 16. It can be reduced.

Further, since the bottom 24 of the rotary column 22 is provided with the stirring member 17 and the stirring action by the surface of the bottom 24 is further applied, the stirring force can be further strengthened. ing.

FIG. 4 is a schematic sectional view showing the liquid processing apparatus 30 of the present invention, and the liquid processing apparatus 1 shown in FIGS. 1 and 2.
The rotating cylinder 12 of 0 has an outdrive structure. The rotating cylinder 32 of the liquid processing apparatus 30 has the cylindrical portion 3
It has a structure in which it is rotatably supported by an annular bearing device 35 on the upper part of 2a and is given a rotational driving force by a rotational driving device M. When the rotary cylinder 32 is rotated by the outdrive structure as described above, since there is no rotary shaft or a fixing member for fixing the rotary shaft and the cylindrical portion, a pull-out pipe 33 for pulling out the solid S is provided. The drawing pump 34 and the like can be arranged inside the rotary cylinder 32, which is preferable because the degree of freedom in design is increased. Further, when the rotating cylinder or the rotating cylinder has such an outdrive structure, since there is no rotating shaft, it is possible to simplify the work of taking the rotating cylinder or the rotating cylinder out of the processing tank at the time of inspection and maintenance. it can.
The stirring member 17 is provided by a support member 32d provided on the inner wall of the rotary cylinder 32.

The liquid treatment apparatus of the present invention can be used not only as a sand basin but also as an aeration layer or a culture tank, and also as a sludge thickening layer, etc., and also uses biochemical pellets such as humus and various catalysts. It is also extremely preferable.

Further, the liquid processing apparatus of the present invention can further improve the processing capacity, efficiency and economical efficiency as described above, and when a liquid processing facility is provided with such a liquid processing apparatus. Can further enhance the processing capacity, efficiency and economic efficiency of the liquid processing facility as a whole.

The bearing 15, the universal joint 16 and the agitating member 17 in the above example are not particularly limited to the structure and shape as in this example, but may be any suitable ones for their purpose and function. It can be a structure or a shape. Further, regarding the provision of the hollow portion F in the rotating cylinder or the rotating cylinder, various forms and modes can be considered, for example, as shown in FIG. 5, and in addition to the size and shape of the rotating cylinder or the rotating cylinder or the constituent material. It is preferable to take an appropriate form or mode in consideration of various conditions such as operating conditions.

[0019]

The liquid treatment apparatus of the present invention has the contents as described above, and can further improve the treatment capacity, efficiency and economical efficiency. That is, since the rotating cylinder or the rotating shaft of the rotating cylinder is supported by the bearing and is connected to the rotary drive device through the universal joint, "runout" can be absorbed and smoothly rotated. Further, it is possible to prevent adverse effects such as deformation and damage of various devices and members, and reduce the cost required for maintenance management. Further, by providing the rotating cylinder or the rotating cylinder with a stirring member for stirring the solid matter,
It is possible to wash solid substances such as sand by suspending organic substances contained in solid substances such as sand that settled at the bottom of the treatment tank.
Since the solid matter in a state where the organic matter is removed by stirring and washing does not cause a bad odor or spoil, the treatment required for disposal can be simplified. Further, when the upper part of the rotating cylinder is provided with a flow hole for circulating the liquid from the inside of the rotating cylinder to the outside, even when the water level in the processing tank is lowered and the upper part of the rotating cylinder is exposed on the liquid surface. , The liquid can be reliably flowed from the inside of the rotating cylinder to the outside, and the vortex flow and the upward flow and the downward flow can be made stronger, and the processing capacity and efficiency can be further enhanced. . In addition, in the case of a rotating cylinder, the stirring force can be made even stronger by the stirring action by the surface of the bottom, and when a hollow portion is provided in the rotating cylinder or the rotating cylinder, the weight and specific gravity decrease. Since a suitable buoyancy is generated in the liquid, the driving force of the rotary drive device can be reduced, which is economical. If the rotating cylinder or rotating cylinder is rotated with an outdrive structure, there is no rotating shaft, so it is possible to simplify the work of taking the rotating cylinder or rotating cylinder out of the processing tank during inspection and maintenance. In addition, since there is no rotating shaft or a fixing member that fixes the rotating shaft and the cylindrical part, especially when the rotating cylinder is rotated by an outdrive structure, a drawing tube or drawing pump for extracting solid matter Etc. can be arranged inside the rotating cylinder, which is preferable because the degree of freedom in design is increased. When the liquid processing facility is configured by including such a liquid processing device, the processing capacity, efficiency and economical efficiency of the liquid processing facility as a whole can be further enhanced.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a liquid processing apparatus according to the present invention.

FIG. 2 is a schematic cross-sectional view showing another usage state of the embodiment shown in FIG.

FIG. 3 is a schematic cross-sectional view showing another embodiment of the liquid processing apparatus according to the present invention.

FIG. 4 is a schematic cross-sectional view showing another embodiment of the liquid processing apparatus according to the present invention.

FIG. 5 is a schematic cross-sectional view showing various other examples of the rotating cylinder or the rotating cylinder of the liquid processing apparatus according to the present invention.

FIG. 6 is a schematic diagram showing a wastewater treatment flow of a conventional general wastewater treatment facility.

[Explanation of symbols]

10, 20, 30 ... Liquid processing apparatus 11 ... Treatment tank 12, 32 ... Rotating cylinder 12b, 22b ... rotary shaft 15… Bearing 16… Universal joint 17 ... Stirring member 19… Distribution hole 22 ... Rotating cylinder F ... Hollow part M ... Rotary drive equipment

Claims (5)

[Claims] 1. A liquid processing apparatus comprising a rotating cylinder or a rotating cylinder in a processing tank in which a liquid to be processed can be introduced and discharged freely, wherein a rotating shaft of the rotating cylinder or the rotating cylinder is supported by a bearing. And a liquid treatment device which is connected to the rotary drive device via a universal joint. 2. A liquid processing apparatus comprising a rotating cylinder or a rotating cylinder in a processing tank in which a liquid to be processed can be introduced and discharged freely, wherein the rotating cylinder or the rotating cylinder is settled at the bottom of the processing tank. A liquid processing apparatus comprising a stirring member for stirring solid matter such as sand. 3. A liquid processing apparatus comprising a rotating cylinder or a rotating cylinder in a processing tank capable of introducing and discharging a liquid to be processed, wherein the rotating cylinder or the rotating cylinder has a hollow portion for generating buoyancy. The liquid processing device provided. 4. A liquid processing apparatus comprising a rotating cylinder or a rotating cylinder in a processing tank that allows the liquid to be processed to be introduced and discharged freely, wherein the rotating cylinder or the rotating cylinder has a rotational driving force at its outer peripheral portion. A liquid processing device that has an outdrive structure that is given and rotates. 5. A liquid processing facility provided with the liquid processing apparatus according to claim 1.