JPS625028B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating sludge water in a septic tank, etc. using a sludge water treatment and water-filling return vehicle, and it is possible to remove sludge water from a septic tank, etc. and fill it with water using a single vehicle. This paper relates to a new sludge water treatment method.

Conventionally, when treating sludge water from a septic tank, etc. for the purpose of managing the septic tank, etc., the sludge water from the septic tank, etc. is drawn out with a vacuum car, etc., and then the water is filled with household tap water, or another tank car is used. Because the water was brought in and filled with water, there were inconveniences such as the labor required to fill the water.

The present invention has been made in view of the above-mentioned points, and is a novel product that enables the removal and filling of sludge water with a single vehicle, thereby facilitating the management of septic tanks, etc. This provides a method for treating sludge water.

That is, the present invention provides a vehicle with a suction/drainage hose, a sludge water treatment tank and a water permeation tank provided inside a stirring mechanism that stirs and mixes sludge water and a coagulant, a rotary screen tube that performs solid-liquid separation, and a rotary screen cylinder below the same. A pressurizing system is constructed using a filtration device equipped with an overwater receiving tank located in the sludge water treatment tank and an overwater tank, and a vacuum pump and a four-way switching valve, and is capable of pressurizing and reducing the internal pressure of the sludge water treatment tank and overwater tank separately. The sludge water is equipped with a pressure and decompression device, the suction and drainage hoses are connected to the sludge water treatment tank and the overwater tank, and a filtration device is connected between the sludge water treatment tank and the overwater tank. A sludge water treatment method using a septic tank, etc. that uses a treatment and water-filling return vehicle, in which overwater is stored in an overwater tank in advance, the sludge water treatment tank is depressurized using a pressurization/reduction device, and the suction/drainage hose is connected. After suctioning and storing sludge water from a septic tank, etc. into a sludge water treatment tank, the overwater tank is pressurized by the above-mentioned pressurization and decompression device, and the overwater in the overwater tank is sucked and stored into the sludge water treatment tank. An amount equal to the amount of water is discharged to a septic tank etc. through the suction and drainage hose, while the sludge water in the sludge water treatment tank is stirred and mixed with a flocculant by a stirring mechanism to form flocs (underwater) in the sludge water treatment tank. The charge (-) of the sludge colloid and the charge (+) of the flocculant molecules are neutralized, and the sludge colloids are drawn together (cross-linking phenomenon) to form a spongy group. The primary treated water in the sludge water treatment tank containing the obtained flocs is pressurized into the sludge water treatment tank.
Pressure is increased by the pressure reduction device, the pressure is sent to the above-mentioned filtration device, solid-liquid separation is carried out by the filtration device, and the separated superwater is placed in the above-mentioned superhydration receiving tank. The present invention provides a method for treating sludge water in a septic tank, etc. using a water filling and return vehicle, which is characterized by suctioning and storing superfluous water in a tank, and discharging the excess water from an overwater receiving tank to a septic tank, etc., as necessary. be.

Embodiments of the method of the present invention will be described below with reference to the drawings.

First, to explain the sludge water treatment and water charging return vehicle used in the method of the present invention, the drawing shows a piping system diagram of such a vehicle, and in the drawing,
1 is a suction/drainage hose having opening/closing handles 10 and 11; 2 is a sludge water treatment tank equipped with a stirring mechanism 2' for stirring and mixing sludge water and flocculant; 3 is a water tank; 4 is a filter device; Reference numeral 5 denotes a pressurization and depressurization device capable of pressurizing and depressurizing the internal pressures of the sludge water treatment tank 2 and overwater tank 3, respectively, and 6 denotes a flocculant liquid tank, which is installed in a vehicle (not shown). There is.

The suction and drainage hose 1 is wound around a hose reel 12, and is connected to the sludge water treatment tank 2 and the overwater tank 3 via a pipe 30 having an opening/closing socket 13 and a pipe 31 having an opening/closing socket 14, respectively. It is connected to the bottom of the. In this case, the pipes 30 and 31 are directly connected to the suction and drainage hose 1.
pipe 30 is connected to pipe 32, and pipe 31 is connected to pipe 32 and pipe 33.
It is connected to the suction and drainage hose 1 via.

The sludge water treatment tank 2 and overwater tank 3 are provided with windows 2'' and 3'' for checking the properties of the sludge and overwater, respectively.

The device 4 is composed of a horizontal rotary screen cylinder 4' for solid-liquid separation, and a water receiving tank 4'' disposed below the horizontal screen cylinder 4'.The rotary screen cylinder 4' includes: The sludge water discharged from one end (primary treated water containing flocs obtained by flocculating reaction of sludge water from a septic tank etc. with a flocculant in the sludge water treatment tank 2 as described later) is separated into solid and liquid on its screen surface. The sludge that is separated is
A spiral blade (not shown) provided on the inner surface drains water from the other end to a sludge tank (not shown), while allowing the separated excess water to flow or drip into the excess water receiving tank 4''. The rotary screen tube 4' is constructed so that it can be tilted up and down at the other end in order to smoothly carry out overwork on slopes. 4 is connected between the sludge water treatment tank 2 and the filtration tank 3 via a pipe 34 having an opening/closing socket 15 and a pipe 35 having an opening/closing socket 16. , one end of the rotary screen cylinder 4' is connected to the bottom of the sludge water treatment tank 2 via pipes 34, 33, 30, and the filtration tank 4'' is connected to the bottom of the sludge water treatment tank 2 via pipes 36, 35. water tank 3
It is connected to the top of the. In addition, the pipe 34 having the opening/closing knob 15 has a transparent part 3 at least in a part thereof.
4' is provided.

Further, the pressurization and depressurization device 5 includes a vacuum pump 5
0, a four-way switching valve 51, a pressure regulating valve 52, and the like. That is, one end of four pipes 53, 54, 55, and 56 are connected to a four-way switching valve, a vacuum pump 50 is connected between the other ends of pipes 53 and 54, and the tip of pipe 56 is branched. It is connected to the upper part of the overwater tank 3 and the sludge water treatment tank 2 through a pipe 58 having an opening/closing socket 57 and a pipe 60 having an opening/closing socket 59, respectively, and a pipe 55 is connected to the top of the pipe 55 with a three-way switching socket. A regulating valve 52 is connected to the pressure regulating valve 52, and a pipe 61 that opens to the atmosphere and a pipe 62 that communicates with the sludge water treatment tank 2 are connected to the pressure regulating valve 52. According to the above configuration, by switching the four-way switching valve 51 while the vacuum pump 50 is operating, when one of the pipes 55 and 56 is in a pressurized state, the other is in a depressurized state. I can do it. Therefore, under this condition, first, the opening/closing tips 57, 59
By operating this, the internal pressure of either or both of the sludge water treatment tank 2 and the water treatment tank 3 can be increased or decreased. Also, pipes 55 and 6
If the pressure adjustment valve 52 is adjusted so that the sludge water treatment tank 2 and the overwater tank 3 are connected, and the opening/closing knob 59 is closed, the opening/closing knob 57 is opened and the four-way switching valve 51 is switched. One of them can be in a reduced pressure state and the other can be in a pressurized state. That is, according to the pressurization and decompression device 5,
The internal pressures of the sludge water treatment tank 2 and the overwater tank 3 can be pressurized and depressurized separately or simultaneously using one vacuum pump 50. In the above explanation, in order to make it easier to understand the functions of the pressurization and depressurization device 5, the four-way switching pot 51 and the opening/closing pot 5 are used.
The order of operations such as No. 7 is different from the actual order of operations. Further, according to the pressurization and depressurization device 5, by adjusting the pressure adjustment valve 52 and adjusting the degree of communication of the pipe 55 to the valve 61 and the pipe 62, the pressurization pressure and Pressure pressure can be adjusted. In particular, it is important to be able to adjust the pressurizing pressure, which makes it possible to forcefully feed the flocs from the sludge water treatment tank 2 to the filtration device 4 without damaging the flocs, as will be described later. Note that the pressure regulating valve 52 can also be configured using two two-way switching sockets (opening/closing sockets). Also, 63 is an oil separator, 64
is an air safety valve, and 65 is an air cleaner.

The flocculant liquid tank 6 is connected to the upper part of the sludge water treatment tank 2 via a pipe 37 having a flow meter 17 and an opening/closing cock 18. In this case, the flocculant liquid tank 19 outside the vehicle is connected to the top of the sludge water treatment tank 2. A predetermined amount of the flocculant liquid transferred using the external pump 20 can be supplied into the sludge water treatment tank 2 while being measured by the flow meter 17.

Further, reference numeral 7 denotes a pump provided between the suction and drainage hose 1 and the filter device 4, so that the excess water separated by the filter device 4 can be directly discharged through the suction and drainage hose 1. To explain in more detail, the pump 7
is provided on a pipe 38 together with the opening/closing pot 21, and one end of the pipe 38 is connected to the suction and drainage hose 1, and the other end is connected to the overwater receiving tank 4'' in the overflow device 4 through the pipe 36. .Mata 3
Reference numeral 9 denotes a gravity discharge port for discharging excess water by gravity, not by the pump 7, and is provided between the pump 7 and the filter device 4, in this case with a branched pipe 36 and an opening/closing pot 22. .

In addition, 23 in the drawing is an opening/closing pot for drain discharge.

By using the sludge water treatment and water filling return vehicle having the above configuration, the sludge water treatment method of the present invention can be carried out as follows.

That is, in the basic embodiment of the present invention, first, after driving the vehicle to a location where a septic tank or the like is located, the suction and drainage hose 1 is pulled out from the hose reel 12 and inserted into the sludge water of the septic tank or the like. death,
The sludge water treatment tank 2 is depressurized by the pressurization and depressurization device 5, and the opening/closing pots 10, 11, and 13 are opened to treat sludge water from a septic tank, etc., via the suction/drainage hose 1 and pipes 32, 30. It is sucked and accommodated in the tank 2. Then, around this time, the opening/closing pot 18 is opened and the flocculant liquid tank 6 is drained from the liquid level meter 1.
A predetermined amount of flocculant liquid is sucked into the sludge water treatment tank 2 through the pipe 37 while being measured at step 7. After a predetermined amount of sludge water and coagulant liquid are sucked and stored in the sludge water treatment tank 2 in this way, the stirring mechanism 2' is operated to cause the sludge water to undergo a flocculation reaction in the sludge water treatment tank 2 to form flocs. do.

Once the flocs are formed, the sludge water treatment tank 2 is pressurized by the pressurization/depressurization device 5, while
The excess water tank 3 is brought into a reduced pressure state, and the excess water tank 3 is brought into a depressurized state, and the
13, 15 and 1.
Open 6. In this way, the primary treated water in the sludge water treatment tank 2 containing flocs can be sent under pressure to the rotary screen cylinder 4' in the filtration device 4 via the pipes 30, 33, and 34, and the rotary The super water separated by the screen tube 4' and flowing down or dripping into the super water receiving tank 4'' can be sucked and stored in the super water tank 3 via the pipes 36 and 35. During the pressure feeding process, if the properties of the flocs passing through the transparent part 34' of the pipe 34 are observed, and the pressure adjustment valve 52 of the pressurization/depressurization device 5 is adjusted, the pressure in the sludge water treatment tank 2 can be adjusted. Since the pressure can be adjusted as described above, the flocs can be fed to the filtration device 4 under very low pressure without damaging the flocs.

Next, the overwater tank 3 is brought into a pressurized state by the pressurization/decompression device 5, and the opening/closing pots 14, 11, and 10 are opened. In this way, the excess water in the excess water tank 3 can be removed from the pipes 31, 33 and 32.
In addition, water can be drained to a septic tank or the like via the suction/drainage hose 1.

In addition, in the above explanation and the following explanation, all the opening/closing doors other than the open opening/closing door are closed. In addition, the above basic embodiment is suitable for septic tanks, etc.
Mainly used when adjusting SV.

By the way, in the above basic embodiment, after the solid-liquid separation with the filtration device 4 is completed, the separated filtrate is discharged to a septic tank or the like. However, in the filtration device 4, since the sludge is separated, the amount of the sludge water sucked into the septic tank or the like and the superfluous water to be discharged do not match, and the amount of superfluous water to be discharged is insufficient. In order to eliminate this inconvenience, it is sufficient to suction and store overwater (filled water) in the overwater tank 3 in advance, and in this way, there will be no shortage of overwater as described above. . That is, in the present invention, if the superhydrant is stored in the superhydric tank 3 in advance in this way, even if the sludge water is treated according to the above embodiment,
There is no shortage of superfluous water discharged from the superfluous tank 3, and if the superfluous tank 3 is pressurized by the pressurization/reducing device immediately after the sludge water is sucked into the sludge water tank 2, the superfluous water tank 3 The excess water previously stored inside can be immediately discharged via the pipes 31, 33 and 32 and the suction/drainage hose 1.

Note that, unlike the embodiments described above, if the entire amount of sludge water from the septic tank, etc. needs to be withdrawn for cleaning the septic tank, etc., the sludge from the septic tank, etc. will be removed not only from the sludge water treatment tank 2 but also from the overwater tank 3. Suction and containment of water. The suction and storage of sludge water into the sludge water treatment tank 2 is as described above. In order to suction and store sludge water into the overwater tank 3, the overwater tank 3 is brought into a depressurized state by the pressurization and decompression device 5, and Opening/closing trick 10,
11 and 14, and in this way, the suction and drainage hose 1 and the pipes 32, 33, and 3
1, sludge water from a septic tank or the like can be sucked and stored in the overwater tank 3. After the sludge water is sucked and stored in the sludge water treatment tank 2 and the overwater tank 3, the sludge water in the sludge water treatment tank 2 is first treated in accordance with the basic embodiment described above, and then transferred to the overwater receiving tank 4 in the filtration device 4. The excess water in the excess water receiving tank 4'' cannot be discharged according to the above-mentioned basic embodiment because sludge water is stored in the excess water tank 3 in this case. , open the opening/closing pot 21 and operate the pump 7, and then open the pipes 36 and 3.
8, as well as direct discharge via the suction and drainage hose 1. In addition, when pumping by the pump 7 is not necessary, open the opening/closing pot 22 and close the gravity outlet 3.
Drain excess water from 9. After the sludge water in the sludge water treatment tank 2 has been treated and discharged, the sludge water in the sludge water treatment tank 3 is transferred to the sludge water treatment tank 2, and the sludge water is transferred to the filtration apparatus in the basic embodiment as described above. 4 or from the suction/drainage hose 1 via the pump 7. In this case, the sludge water is transferred from the overwater tank 3 to the sludge water treatment tank 2 by bringing the sludge water treatment tank 2 into a depressurized state using the pressurization and decompression device 5, while the overwater tank 3 is brought into a pressurized state. This can be done via the pipes 31, 33, and 30 by opening the opening/closing tips 14 and 13.

As described above, according to the sludge water treatment method of the present invention, it is possible to remove and fill the sludge water with just one vehicle, and the sludge water treatment method and pressurization device used in the present invention・Coupled with the effects of the pressure reduction device, it is possible to easily manage septic tanks, etc.

[Brief explanation of the drawing]

The drawing shows a piping system diagram of the sludge water treatment and water return vehicle used in the present invention. 1... Suction and drainage hose, 2... Sludge water treatment tank, 2'... Stirring mechanism, 3... Overwater tank, 4
...pressure device, 5...pressurization, depressurization device.

Claims (1)

[Scope of Claims] 1. A vehicle includes a suction and drainage hose, a sludge water treatment tank and a superhydrant tank provided inside a stirring mechanism that stirs and mixes sludge water and a flocculant, a rotary screen cylinder that performs solid-liquid separation, and its It is constructed using a filtration device equipped with an overwater receiving tank disposed below, a vacuum pump, and a four-way switching valve, and is capable of pressurizing and depressurizing the internal pressure of the sludge water treatment tank and overwater tank, respectively. Equipped with a pressurization and depressurization device, connecting the suction and drainage hoses to the sludge water treatment tank and the overwater tank, and connecting the filtration device between the sludge water treatment tank and the overwater tank. This is a method of treating sludge water in a septic tank, etc. using a sludge water treatment and water filling and return vehicle, in which the above-mentioned overwater tank is previously filled with superfluous water, and the above-mentioned pressurization and depressurization device is used to After depressurizing the sludge water treatment tank and sucking and storing sludge water from the septic tank, etc. into the sludge water treatment tank through the suction and drainage hose, the overwater tank is pressurized by the pressurization and depressurization device to remove the overwater. An amount of excess water in the tank equal to the amount of sludge sucked and stored in the sludge water treatment tank is discharged to a septic tank etc. through the suction and drainage hose, while the sludge water in the sludge water treatment tank is treated with a flocculant. The primary treated water in the sludge water treatment tank containing the flocs thus obtained is stirred and mixed by a stirring mechanism to form flocs in the sludge water treatment tank, and the sludge treatment tank is pressurized. The overwater is pressurized by the decompression device and sent to the above-mentioned filtration device for solid-liquid separation, and the separated overwater is placed in the overwater receiving tank. A method for treating sludge water in a septic tank or the like using a sludge water treatment and water-filling return vehicle, characterized in that the superfluous water is sucked into a tank and discharged from the superwater receiving tank to a septic tank or the like as required.