JPH0632405A - Waste transporting method by using pipeline - Google Patents

Abstract

PURPOSE:To forcibly send sedimented solid matter under pressure, without generating any choke, by putting ball-shaped elastic bodies into a double pipeline having an inside pipe comprising many pores and a filtration film. CONSTITUTION:Waste water 50 containing wastes is transported through a pipeline formed of a double pipe, in which a space is made between the inside pipe and the outside pipe, and the inside pipe comprises many pores and a filtration film. In this case, every time a definite quantity of the waste water 50 is pressed in a pipeline from its one end 25, ball-shaped elastic bodies 51 whose diameters are almost the same as the inside diameter of the inside pipe, are forced into the inside pipe so as to transport the waste water 50 as being partitioned by the ball-shaped elastic bodies 51. Gas generated in the process of movement of the waste water 50 is discharged as exhaust gas 17, and permeated water is also discharged as drainage 16. On the other hand, if frictional resistance of the waste water 50 against the inner wall of the pipe increases, pressurized water 15 is injected. Moreover, an ordinary pipe 30 is wound with a heating coil 35 or a cooling coil 36 for promoting fermentation of the waste water 50 or preventing its overheat, if necessary. In this way, the waste water 50 is dewatered and taken out as a solid matter from an exhaust pipe 31, finally.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention relates to a method of transporting waste such as general waste and sewage to a treatment facility such as an incinerator.

[0002]

2. Description of the Related Art Since waste materials called general waste are made of uneven materials and have different water contents, a special means is required for transporting them by pipeline. As one of the means, the inventor previously proposed the method of FIGS. 3 and 4 in Japanese Patent Application No. 3-275003. That is, the double pipe of FIG. 3 is used to form the pipe line of FIG. 4, and the mixed fluid of the waste and water put into the hopper 20 is operated by the plunger of the slurry pump 28 and the sluice valves 21, 24 synchronized therewith. It is pressure-fed to the discharge pipe 31 by alternating opening and closing. FIG. 3 shows a double tube structure, and the inner tube is composed of a support wall 1 having a large number of small holes, a pressure resistant wall 2 and a filtration membrane 3 sandwiched between these. An outer tube 4 is provided outside the inner tube with a gap 9 in between, an inlet 5 for pressurized water 15 and a drain 6 for permeated water 16 are provided on the lower surface of the outer tube, and a permeated gas 17 is exhausted on the upper surface. A mouth 7 is provided. The filtration membrane 3 and the support wall 1
It is also possible to make a ceramic filtration membrane that is integrated with the above.

The filter membrane 3 permeates gas and moisture from the high pressure side to the low pressure side, but does not permeate polymer materials and colloid particles. Therefore, the pressure in the inner tube is higher than the pressure of the fluid in the inner tube.
By lowering the pressure of 1, the water and gas in the fluid are permeated through the small holes of the inner tube and stored in the void 9 as shown in FIG. 1 (c). When the pressure in the void rises due to this storage, the pressure in the void is reduced by draining from the drain port 6, so that the water content of the pipe fluid continues to permeate into the void 9 through the filtration membrane 3.

Further, the gas generated by the fermentation of the waste is collected in the upper part of the void 9, but when the liquid level 13 falls below a certain level, the liquid level detector 12 is activated and exhausted from the exhaust port 7. When exhausted, the pressure in the void drops too much, so pressurized water 15 is injected from the water injection port 5 with the drain port 6 and the exhaust port 7 closed.
The difference between the pressure in the void and the pressure in the inner pipe is always kept constant.

Further, a pressure gauge 11 for measuring the pressure of the fluid in the inner pipe is attached to each of the double pipes in the vicinity of the downstream side flange so that the pressure in the pipe becomes equal to or more than a certain value than the pressure in the adjacent upstream double pipe. If it decreases, the pressurized water 15 having a pressure higher than the pipe pressure is injected into the pipe fluid, and the lubrication action reduces the pressure loss due to friction with the pipe wall.

A heating coil is provided in the normal pipe 30 in the conduit of FIG.
35 or a cooling coil 36 is provided to raise the temperature of the fluid in the tube to accelerate the fermentation or cool the fluid that has been overheated by the fermentation.

As a result, even non-homogeneous general dust can be discharged without causing clogging of the pipeline, generation of noise and odor, and easy handling in the subsequent process.

[0008]

For general waste having a low water content, it is possible to transport long distances through the pipelines of FIGS. 3 and 4 by mixing water when throwing it into the popper 20. However, when sewage containing a large amount of liquid components is transported, the solid components precipitate during the movement within the pipe, so the liquid components with low frictional resistance with the pipe wall preferentially move, and the accumulated solid precipitate accumulates, eventually There is a risk of clogging.

[0009]

In order to transport wastewater containing a large amount of liquid components by pipe, it is necessary to forcibly move the precipitated solid components without accumulating them. As a means for this, in the present invention, a mixture containing waste is contained in a pipe line formed by using a double pipe in which a gap is provided between the inner pipe and the outer pipe and a large number of small holes and a filtration membrane are formed in the inner pipe. In the method of transporting a fluid, a spherical elastic body having a diameter substantially equal to the inner diameter of the inner pipe is press-fitted every time a fixed amount of the mixed fluid is press-fitted from one end of the pipe, and the mixed fluid is partitioned in the spherical elastic body. To be transported.

Further, in order to promote the fermentation of the waste or prevent the overheating associated with the fermentation, the outer circumference of the pipe forming a part of the pipe is heated or cooled.

[0011]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 is a mechanism for introducing waste water and a spherical elastic body in place of the waste input hopper 20 of FIG. 4, and a pipe for introducing a carrier fluid is vertically branched into a cylinder 22 in which a plunger 23 of a slurry pump operates. However, the pipe branches into two directions above the sluice valve 21, and one pipe 52
Waste water 50 is introduced through the open / close valve 54, and spherical elastic bodies 51 are dropped from the hopper 53 through the open / close valve 55 one by one from the other pipe. A discharge pipe 25 is connected to the cylinder 22 via a sluice valve 24.

When pumping sewage, first the sluice valve 24
With the sluice valve 21 open and the plunger 23 pulled to the left, the opening / closing valve 55 is opened at the same time, and only one spherical elastic body 51 is dropped from the hopper 53 into the cylinder chamber.
Is closed and the opening / closing valve 54 is opened to introduce the dirty water 50 into the cylinder chamber through the pipe 52. When the plunger 23 is pulled to the leftmost, as shown in FIG. 1, the cylinder chamber is filled with dirty water, and one spherical elastic body 51 exists facing the plunger 23. Therefore, when the partition valve 21 is closed and the partition valve 24 is opened to drive the plunger 23 to the right, the dirty water in the cylinder chamber is pumped to the discharge pipe 25. It should be noted that the spherical elastic body is not necessarily charged every one stroke of the plunger operation, but one may be charged for every 5 m3 of sewage.

The sewage sent under pressure is discharged from the discharge pipe 25 in FIG.
To the right through the normal pipe 30 and a number of double pipes and the end discharge pipe
Although it reaches 31, the process in the middle will be described with reference to a schematic vertical sectional view of the double pipe. The spherical elastic body is made of an elastic material such as synthetic rubber that is pressure-resistant, chemical-resistant, and has the same diameter as the inner diameter of the pipeline, so it moves while closely contacting the inner wall of the pipe during the process of being pumped. . Therefore, the sewage does not mix with the sewage in the adjacent section because it moves while being divided into sections by the spherical elastic body. The solid component in the wastewater precipitates below the pipe, but the spherical elastic body 51 moves the precipitated solid without causing it to stay, so that the inner wall of the pipe is constantly pumped. In addition, the gas generated in the process of moving sewage is exhausted.
As shown in FIG. 3 and FIG. The same as 4.

Further, a heating coil 35 is provided on the outer circumference of the normal tube 30.
Alternatively, a cooling coil 36 is wound, and is heated to accelerate fermentation of waste water or cooled to prevent overheating due to fermentation, if necessary.

As described above, the sewage 50 is removed of water as it moves, and the volume thereof is reduced, so that the interval between the spherical elastic bodies 51 is gradually shortened, and finally the solid bodies are narrowed to the spherical elastic bodies and are in a dehydrated state. Minutes are taken out.

[0016]

As described above, the pipe line is constituted by a double pipe having an inner pipe formed of a large number of small holes and a filtration membrane, and every time a fixed amount of waste water is introduced, the diameter is almost equal to the inner diameter of the inner pipe. When the spherical elastic body is added, the precipitated solid matter does not stay and the pipe is not clogged, so that the sewage can be transported smoothly and can be taken out in a dry state which is easy to process.

[Detailed Description of Drawings]

FIG. 1 is an explanatory view of a charging mechanism for sewage and a spherical elastic body according to the present invention.

FIG. 2 is a vertical cross-sectional view of a double tube exemplarily showing the action of the spherical elastic body according to the present invention.

FIG. 3 is a view showing a structure of a double pipe in a conventional method.

FIG. 4 is a drawing showing a pipe line using a double pipe in a conventional method.

[Explanation of symbols]

 1 Support Wall 2 Pressure-Resistant Wall 3 Filter Membrane 4 Outer Tube 5 Pressurized Water Injection Port 6 Drainage Port 7 Exhaust Port 11 Pressure Gauge 12 Liquid Level Detector 21 Gate Valve 22 Cylinder 23 Plunger 24 Gate Valve 35 Heating Coil 36 Cooling Coil 50 Waste Water 51 Spherical Elastic body 54 Open / close valve 55 Open / close valve

Claims (2)

[Claims] 1. A mixed fluid containing waste is transported in a pipe line formed by using a double pipe in which a gap is provided between an inner pipe and an outer pipe and a large number of small holes and a filtration membrane are formed in the inner pipe. In this method, a spherical elastic body having a diameter substantially equal to the inner diameter of the inner pipe is press-fitted every time a fixed amount of the mixed fluid is press-fitted from one end of the pipe, and the mixed fluid is conveyed in a state of being partitioned by the spherical elastic body. A pipeline transportation method for waste characterized by the above. 2. The method for transporting waste by pipeline according to claim 1, wherein the outer circumference of the tubular body forming a part of the pipeline is heated or cooled.