JPS6130837B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge water treatment vehicle for a septic tank or other tank that treats sludge water stored in a septic tank or other tank using a flocculant solution. Sludge water can be effectively separated into flocculated sludge and overwater using a flocculant solution, and the overwater, which does not kill the seed sludge, can be returned to the septic tank or other tank as water. Septic tanks, etc., have revolutionary effects compared to conventional sludge and water pumping trucks, such as only needing to be transported, septic tanks, etc. are easy to manage, can be made smaller, and are easier to operate. It provides a sludge water treatment vehicle.

That is, the present invention provides a sludge water treatment in which one tank is divided by two partition walls and provided with a flocculant liquid tank, a superhydric tank, and a sludge tank that is equipped with a stirring mechanism and that can communicate with the flocculant liquid tank. A tank is arranged so as to be able to communicate with each other between the above-mentioned superwater tank and the above-mentioned sludge tank, and the sludge water in which the solid content is agglomerated into blocks by being stirred and mixed with the flocculant liquid in the sludge tank is mixed with the superwater tank and the sludge tank. A filtration device that separates flocculated sludge into flocculated sludge, a pressurization/depressurization device configured using a vacuum pump and a four-way switching tank, and a suction/drainage hose that can communicate with the sludge tank or the overwater tank via the switching tank. The pressurization/depressurization device is connected to each of the flocculant liquid tank, the overwater tank, and the sludge tank, and is capable of depressurizing and pressurizing the inside of each of the three tanks, A flow meter is provided between the flocculant liquid tank and the sludge tank to measure the amount of flocculant liquid transferred into the sludge tank. Sludge in a septic water tank, etc., comprising a cylinder, an overwater receiving tank disposed below the cylinder and communicating with the sludge tank, and a sludge tank that accommodates flocculated sludge separated by the screen cylinder. The company provides water treatment vehicles.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sludge water treatment vehicle such as a septic tank according to the present invention shown in the drawings will be described below.

In Figures 1 to 3, 1 is a sludge water treatment tank mounted in the center of the vehicle body, and the interior is divided by two partition walls 1' and 1' shown in Figure 4, and the flocculant liquid tank is sequentially placed from the front. A, a water tank B, and a sludge tank C are provided. The inner wall of the flocculant liquid tank A is coated with epoxy resin, and the sludge tank C is equipped with a stirring mechanism C' having three blades 2 installed in two stages on a rotating shaft as shown in FIG. It is arranged. Also, D is a filtration device placed on the left rear side of the sludge water treatment tank 1, E is a sludge tank placed in front of it, F is a clean water tank placed on the right side of the sludge water treatment tank 1, and G is the sludge water A hose reel for the suction and drainage hose placed above the rear of the treatment tank 1, J is a hose reel for the cleaning hose, and other
Although not shown in the figure, the sludge water treatment vehicle such as a septic tank according to the present invention is equipped with a vacuum pump H as an essential requirement, as shown in FIG. By configuring and arranging each tank etc. in this way, the sludge water treatment vehicle of the present invention can be downsized, and can be applied to small vehicles with a loading weight of less than 4 tons and can freely travel on narrow roads. It becomes possible.

The piping relationship of each of the above components will be explained based on FIG. 4 along with some details of each of the above components and components other than the above components.
The overwater tank B and the sludge tank C are connected to a vacuum pump H via a four-way switching tank I, and a pipe 3 connects the four-way switching tank I to the tanks A, B, and C.
is provided with an air cleaner 4, and one end of the pipe 3 is branched into three parts, each of which has a two-way switch 5,
It is connected to the above-mentioned tanks A, B, and C via 6 and 7. Furthermore, the four-way switching tank I and the vacuum pump H are connected to form a closed loop through two pipes 8 and 9 to constitute one pressurization and depressurization device.
The pipe 9 is provided with an oil separator 10 and an air safety valve 11. Four-way switching Kotoku I
Another pipe 12 connected at one end to the other end is branched into two parts, one of which is open to the atmosphere via a two-way switching socket 13, and the other is open to the atmosphere via a two-way switching socket 14. It is connected to sludge tank C.

A pipe 15 has one end connected to the flocculant liquid tank A, and is opened to the atmosphere via a two-way switch 16. When the switch 16 is opened, the flocculant liquid is removed from the outside (outside the system). It is designed so that it can be inhaled. 17 is a pipe for transferring the flocculant liquid between the flocculant liquid tank A and the sludge tank C, and the flow meter 18
and a two-way switching cock 19. Also, 20 and 21 are two-way switching tips 22,
It is a pipe whose one end is connected to the overwater tank B and the sludge tank C via a pipe 23, which joins at a point 24, and branches into a pipe 25 and a pipe 26 at the junction 24. One of the branched pipes 25 is connected to a suction/drainage hose 27 wound around a hose reel G for suction/drainage hoses via a two-way switching socket 28, and the other pipe 26 is connected via a two-way switching socket 29. It is connected to one end of the filter device D. The other end of the filtration device D is connected to the filtration tank B via a transparent pipe 31 having a two-way switching pot 30.

The filtration device D communicates between the filtration tank B and the sludge tank C via the pipes 21, 26, and 31.
It mainly consists of an overwater receiving tank 32, a horizontal rotary screen cylinder 33 rotatably arranged above the overwater receiving tank 32, and a cleaning nozzle 34' arranged above the rotary screen cylinder 33. The rotary screen tube 33 and the cleaning nozzle 3
4' is a transparent outer casing 34 with openings at the bottom and front.
(See Figure 2). Strictly speaking, the rotary screen cylinder 33 has its front end 33' protruding forward of the outer casing 34, and is connected to the sludge receiving section 3 of the sludge tank E.
By moving the front end of the outer casing 34 up and down with a hydraulic cylinder 52 or the like around the shaft support at the rear end of the outer casing 34, the outer casing 3
4 and can be raised and raised freely (see comparison of Figures 4 and 8)
It is said that In addition, the rotary screen tube 33
is composed of a mesh body made of wire mesh, nylon steel, etc. with 40 to 100 meshes, and on its inner surface there is a spiral plate (Fig. (not shown) is provided. Further, the rotary screen tube 33 is configured such that a part of a rotary screen tube support roll (not shown) provided in the outer casing 34 can be driven by a hydraulic motor (not shown) so that the rotation speed can be adjusted. . In addition, the communication pipe 2 to the above-mentioned filter device D
6 and 31 are opened into the rotary screen cylinder 33 and the overwater receiving tank 32, respectively. Further, 36, 36 are hatches for removing sludge from the sludge tank.

The fresh water tank F is connected to the cleaning nozzle 34' via a plunger pump 37 and a pipe 39 having a two-way switching socket 38, and is also connected to a cleaning hose 40 branched from the pipe 39. . The cleaning hose 40 is wound around a hose reel J for cleaning hoses, and has a two-way switching socket 41 at its open end so that it can be used for cleaning each tank and other cleaning purposes.

In FIGS. 1 to 3, reference numeral 42 denotes a group of operating levers, which enable remote control of the various switching levers, pumps, rotary screen tubes, hose reels, stirring mechanisms, etc. described above using hydraulic pressure. Of course, some of the above-described components, such as the switching knob, may be operated manually. Each tank is provided with a visually visible liquid level scale (not shown), and a portion of the pipe is made transparent so that the properties of the liquid passing through it can be visually observed.

Next, the mode of operation of the sludge water treatment vehicle such as a septic tank according to the present invention constructed as described above will be explained.
In the running state of the sludge water treatment vehicle of the present invention, the fourth
As shown in the figure, all the switching points are in the closed state, and before traveling to the location where the septic tank is located,
First, the flocculant liquid K is sucked into the flocculant liquid tank A as shown in FIG. That is, as shown in FIG. 5, by opening the two-way switching sockets 5, 13, and 16 and setting the four-way switching socket I, and operating the vacuum pump H, the flocculant liquid tank A is opened as shown by the thick solid line. The air inside is released into the atmosphere through the pipes 3 and 12, and as the pressure in the flocculant tank A is reduced, the flocculant liquid K is sucked into the flocculant tank A from outside the system through the pipe 15. be accommodated. Coagulant liquid K to be sucked and stored
A 0.1 to 0.3% aqueous solution of a cationic polyacrylamide polymer flocculant is preferable. After the flocculant liquid K is sucked and contained, the two-way switching tank 16 is closed, and the four-way switching tank I is switched to bring the inside of the flocculant liquid tank A to atmospheric pressure, and then the two-way switching sockets 5 and 13 are closed. Then, drive to the location where the septic tank, etc. is located. In this case, the vehicle for treating sludge water such as a septic tank according to the present invention can be made into a small vehicle with a loading weight of less than 4 tons, so it can be freely driven even on narrow roads.

When you arrive at the location of the septic tank, etc., as shown in Fig. 6, let out the suction and drainage hose 27 from the hose reel G for the suction and drainage hose, and connect the tip of the hose to the septic tank L.
The sludge water M in the septic tank L is contained and sucked into the sludge tank C. That is, as shown in FIG. 6, by opening the two-way switching sockets 7 and 13 and switching the four-way switching socket I to operate the vacuum pump H, while opening the two-way switching sockets 23 and 28, the sludge tank C is opened.
The air inside is released into the atmosphere through the pipes 3 and 12 as shown by the thick solid line, and the resulting sludge tank C
As the pressure is reduced, the sludge water M in the septic tank L is sucked into the sludge tank C via the pipes 21, 25 and the suction/drainage hose 27.

When the suction and storage work of the sludge water M is completed, as shown in FIG.
The two-way switching socket 7, 13, the four-way switching socket I, and the vacuum pump H remain in the state shown in FIG. 6.
9 is opened, and the flocculant liquid K in the flocculant liquid tank A is sucked into the sludge tank C through the pipe 17 as shown by the thick solid line. The flocculant liquid K is sucked and stored in the sludge tank C by keeping the sludge tank C under reduced pressure, and the flocculant liquid K to be sucked and stored can be measured using a flow meter 18. After a predetermined amount of the flocculant liquid K is sucked and stored in the sludge tank C, the two-way switching pot 19 is closed, and the suction and storage of the flocculant liquid K is completed. The suction capacity (amount used) of flocculant liquid K is:
When a 0.1 to 0.3% aqueous solution of a cationic polyacrylamide polymer flocculant is used as the flocculant liquid K as described above, the sludge water M in the sludge tank C has a concentration of 2.1%.
It is preferable to set it as 4 volume %. Furthermore, sludge tank C
The amount of sludge water M in the sludge tank C is measured by the liquid volume scale provided in the sludge tank C as described above.

Next, the flocculant liquid K is poured into the sludge tank C in this way.
After suction and storage, the flocculant liquid K and the sludge water M are stirred and mixed using the stirring mechanism C' to flocculate the solid content in the sludge water M, and this primary treated sludge water N is prepared as shown in Fig. 7. It is formed in the sludge tank C as shown. Such agitation and mixing can also be performed by placing the two-way and four-way switching pots in the state shown in FIG. The flocculant liquid K and the sludge water M in the sludge tank C are stirred and mixed by the air sucked into the sludge tank C through the sludge tank C. Note that the stirring and mixing by the stirring mechanism C' and the stirring and mixing by air may be used together, or either one of them may be used.

The primary treated sludge water N in the sludge tank C is then transferred to the filtration device D as shown in FIG. 8, where it is separated into flocculated sludge O and perwater P.
is stored in the sludge tank E, while the overwater P is stored in the overwater tank B. This switching operation is performed after the stirring and mixing in the sludge tank C is completed.
After switching the sludge tank C to atmospheric pressure via the pipes 12 and 3, the four-way switching valve I is turned on as shown in FIG.
At the same time, two-way switching tips 13, 7 are switched again.
6, 4, 23, 2
9, 30 are opened, and the rotary screen cylinder 33 is opened.
This can be done by driving the . That is, by doing this, the sludge tank C can be pressurized, and the primary treated sludge water N in the sludge tank C can be passed through the pipes 21 and 26 to the rotary screen tube 33 in the filtration device D. Can be pumped.
The primary treated sludge water N, which is pressure-fed from one end of the horizontal rotary screen tube 33, is transferred to the rotary screen tube 33.
As the screen rotates, the screen surface separates the superhydrate P and flocculated sludge O, and the separated flocculated sludge O is pushed out by the spiral blades provided on the inner surface of the screen, while the water content is further separated. , the sludge intake part 3 falls from the other end 33' and enters the sludge tank E.
5, while the excess water P flows down into the excess water receiving tank 32 from the screen surface. Since the overwater tank B is placed under reduced pressure, the overwater P that has flowed down into the overwater receiving tank is sucked into the overwater tank B through the transparent pipe 31 and stored therein. In this case, the amount of flocculant used is extremely small, and since the flocculant is taken into the separated flocculated sludge O, it does not substantially remain in the superhydrate P, and the seeds in the superwater P Since there is no risk of killing the sludge, the septic tank L will function normally if this is used as water filling. Further, since the rotational speed of the horizontal rotary screen tube 33 is adjustable as described above, by slowing down the rotational speed, the rotary screen tube 33 can be placed in an upright position as shown in FIG. By this, the conveyance speed of the flocculated sludge O can be slowed down and the separation effect can be enhanced. In particular, by making the rotary screen cylinder 33 freely tiltable as in the embodiment, sludge water treatment such as a septic tank can be carried out on a slope (downhill). When performing work with the vehicle stopped,
The separation effect can be further enhanced compared to a horizontal rotary screen cylinder 33 that is fixed and not tiltable. In addition, in the above-mentioned filter device D, the outer casing 34 is made transparent, so that it is possible to observe the clogging state of the rotary screen tube 33, and the outer casing 34 is transparent.
4 surrounds the anti-rotation screen cylinder 33, which prevents excess water from scattering.Furthermore, since the pipe 31 is transparent, the properties of the excess water passing through it can be observed.

After storing the excess water P in the excess water tank B as described above, the two-way switching tank 2 is opened in the state shown in FIG.
3, 29, and 30, switch the four-way switching pot I, and open the two-way switching pot 13 to bring the sludge water tank C and the excess water tank B to atmospheric pressure, as shown in FIG. Excess water P in water tank B is removed from septic tank L.
to be pumped to. That is, as shown in FIG. 9, the four-way switching socket I is switched, and the two-way switching socket 13,
If only 6, 22, and 28 are left open, air is forced into the overwater tank B through the pipes 12, 8, 9, and 3 by the operation of the vacuum pump H, and the pressurized state of the overwater tank B is caused by this pressure feeding. Accordingly, overwater tank B
The excess water P inside is pumped into the septic tank L through the pipes 20, 25 and the suction/drainage hose 27 as filled water.

When the above operation is completed, return the four-way and two-way switching pots and others to the state shown in Figure 4, drive to the next septic tank, repeat the above operation for multiple tanks, and put the flocculated sludge into the sludge tank E. When this is satisfied, the flocculated sludge O can be transported to the sludge treatment plant. In this way, only flocculated sludge needs to be treated at the sludge water treatment plant, which prevents sludge water from a septic tank with a low sludge concentration from being input into a sludge water treatment plant built for raw human waste. The fact that the ability was overflowing has been resolved. Incidentally, by opening the two-way switching pot 38 as shown in FIG. By opening the cleaning hose 40, high-pressure clean water can be jetted out from the tip of the cleaning hose 40 to clean various areas.

As mentioned above, the sludge water treatment vehicle such as a septic tank of the present invention is easy to operate and can be made compact, as the treatment tank body is equipped with three tanks: a flocculant liquid tank, an overwater tank, and a sludge water tank. Effective sludge water treatment can be carried out by creating a depressurized and pressurized state in the three tanks using a depressurizing and pressurizing device configured using a vacuum pump and a four-way switching cock,
Sludge water treatment efficiency can be increased by stirring and mixing flocculant liquid according to the concentration of the sludge water to be treated to form a floc. Sludge water from septic tanks and other tanks can be treated at the location where the septic tank and other tanks are located, without relying on frequent back and forth work between the septic tank and the sludge water treatment plant. To easily and quickly manage septic tanks, etc. and treat sludge water by easily and efficiently separating superfluous water and suctioning it into a superfluous tank and returning it to the septic tank as water, allowing the septic tank to function normally. In addition, it is possible to prevent the capacity of the sludge water treatment plant from overflowing, and it is also possible to prevent sludge water from a thin septic tank from being mixed directly into the sludge water treatment plant, which is built to treat thick sludge water. It has extremely great effects such as being able to prevent

[Brief explanation of the drawing]

1, 2, and 3 are a plan view, a side view, and a back view, respectively, of an embodiment of the present invention, and FIGS. 4, 5, 6, 7, and Figure 8,
and FIG. 9 schematically show a circulation system according to an embodiment of the present invention, respectively: running state, coagulant liquid suction state to the flocculant liquid tank, sludge water suction state, flocculant liquid suction state to the sludge water tank, This is a flow sheet in an over-separated state and an over-water injection state. 1... Sludge water treatment tank, 1'... Compartment wall, A... Coagulant liquid tank, B... Overwater tank, C... Sludge water tank, C'...
Stirring mechanism, D...filtration device, E...sludge tank, H...vacuum pump, I...four-way switching pot.

Claims (1)

[Scope of Claims] 1. Sludge water in which one tank is divided by two partition walls, and a sludge tank is provided with a coagulant liquid tank, an overwater tank, and a sludge tank that is equipped with a stirring mechanism and can communicate with the coagulant liquid tank. A treatment tank is arranged so as to be able to communicate with each other between the above-mentioned superwater tank and the above-mentioned sludge water tank, and the sludge water in which the solid content has been agitated and mixed with the flocculant liquid in the sludge tank to coagulate into blocks is a filtration device that separates the sludge and flocculated sludge; a pressurization/depressurization device configured using a vacuum pump and a four-way switching tank; and a suction/drainage hose that can communicate with the sludge tank or the overwater tank via the switching tank. The pressurization/depressurization device is connected to each of the flocculant liquid tank, overwater tank, and sludge tank, and is capable of depressurizing and pressurizing the inside of each of the three tanks. A flow meter is provided between the flocculant liquid tank and the sludge tank to measure the amount of flocculant liquid transferred into the sludge tank. A septic water tank, etc., comprising a screen tube, an overwater receiving tank disposed below the screen tube and communicating with the sludge tank, and a sludge tank that accommodates the flocculated sludge separated by the screen tube. Sludge water treatment vehicle.